AD—A069 £34 ARMY MATCAZaS Ate PE CHANICS RESEARCH CENTER WATERTOWN MA F/S 20/11A*SC AUTOMATED STRESS—STRAIN DATA ANALYSIS. STORASE • AND RETRI—ETC (U )APR 79 R P PAPIRNO

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fl~ WMRC AUTOMATED STRESS-STRAIN DATA ANALYSIS,A

C~ STORAGE, AND RETRI VAL - ~~~~~~ ‘V~ ‘

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~~ PART 2: DATA BANK ENTRY AND- ..• -

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RETRIEVAL~ PROCEDURES ~ ‘• -S~ \

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ARMY MATERIALS AND MECHANICS RESEARCH CJNTERWatertown, Massachusett s 02172

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The finding in this r port are not to be constru.d as an officialDepartment of the Army position, unless so dsv~~st.d by other 0authorized documents. I

Mention of any trade names or manufacturers in this reportmalI not be construed as advertising nor as an officialindorsement or approval of such products or companies bythe United States Government.

DISPOSITION INSTRUCTIONS

Dsstrov thIs rs~ort whin It I. no IonSsr nssdsd.Do not ,stiwn 45 to ths orI MSor.

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SI. 5UPPLENENTAIY NOTES

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Computer programsInfor~~tion retrievalStress-strain diagrams

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UNCLASSIFIEDSECUR ITY CLASIIPICATION OF THIS PASS(~~ DUN ~~ JuIS~~

Block No. 20

ABSTRACT

As part of an in-house effort to improve physical standards andtolerances for materiel through the improvement of acceptance/rejectioncriteria we have developed a procedure for computer processing, storage,and retrieval of mechanical properties data. This second report of athree-part series describes a computer data bank of stress-strain dataand the procedures used to access the data and to update the computer-stored data files. The data bank may be accessed through graphics orteletype remote terminals. User instructions for accessing the data aregiven, various selective retrieval options for the available material/alloy categories are presented, and various optional tabular listingsfrom graphics and teletype terminals are also described. The retrievalprogram also includes an option for obtaining a graphical display of upto three stress-strain curves on the screen of a graphics terminal anda sample set of curves is shown. The simple updating procedures forthe data bank are also described.

Procedures for reducing and analyzing the test data are given inAt44RC TR 79-16, which is Part 1 of the three-part series of reports.FORTRAN listings of all the computer programs used for data reduction,analysis, storage, and retrieval are given in AMMRC TP. 79-18, which isPart

UNCLAS SIFIEDSE C U RITY C LASSIFICAT I ON OP TH I S PAGE (Mha. D.. Eni.~.d)

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___________________________________ ____________________________— — — — .. -~~~~...-. _,.._ - -..- --- -—-

CONTENTS

Page

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . 1COMPUTER DATA STORAGE FILES...... . . . . . . . . . . 2

Materials and Data Identity. . . . . . . . . 2Retrieval Scheme for Computer-Stored Data. . . . . . . 3Content of the DATABANK File . . . . . . .. . . . . . 4Content of the LOCATER Fi1e. . . . . . . . 4

INTERACTIVE DATA RETRIEVAL PROGRAM...... . . . . . . . SUser Instructions. . . . . . . . . . . . . . . . . . 5Material and Alloy Choice. . . . . . . . . . . . . . 6Selected Data Retrieval. . . . . . . . . . 6Data Printout. . . • . 6

Stress-Strain Curves at Graphics Terminals . . . 8Current Status and Future Plans. . . . . . . . 8

ENTRY OF D A T A W U PDATE FILES . . . . 9

AC~~OWLE~~~~~ S . . . . . . . . . . . . . . . . . . 10

• Accession For ——

NTIS G~A&IDDC TABUnann~ ur~c3dJus t i f ic :t i o i~____________

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INTRODUCTION

A major objective of our developed computer procedure for processing, storage,and retrieval of mechanical properties data was to make the analyzed results ofin-house tests readily available. The interest of the Engineering StandardizationDivision (ESD) in this joint program with Engineering Mechanics Division (~ 4D) wasthe use of the data in improving acceptance/rejection criteria as part of an in-house effort to improve standards and tolerances for materiel.

In a previous report 1 a system was described of computer-assisted data re-duction and analysis for tension stress-strain test results. Test descriptorsand test data for one test were automatically punched on a standard 80-columncard by the EVALRO analysis program and a file of the punch cards then was assem-bled to become a hard-copy data bank. A file of card images was also establishedin the UNIVAC 1106 as a data bank to be accessible to all users of the computer.Each line entry in the computer file contains a coded set of material and testdescriptors and the analyzed results of one tension stress-strain test.

No attempt was made to edit any of the data , hence the computer file (andthe hard-copy punch card backup) should be considered to be an extended , generallyaccessible laboratory notebook. The entries for each tension test contain all theraw data except the autographically recorded stress-strain curve. For the latter ,we have converted the analog output of the testing machine instrumentation to aset of digital values and analyzed the digitized data using the EVALRO computer

4 program. The results of the analysis are calculated values of the elastic modulus ,the 0.2% offset yield stress, and the Ramberg-Osgood exponent . These three calcu-lated values are included in the entry for the test data and from them, a goodapproximation of the stress-strain curve to yield can be obtained.

It has been well established* that a variation of an equation, originallyfornulated by Ramberg and Osgood in the early 1940 ’s, can be used to approximatethe stress-strain curve from zero stress to somewhat past the yield region . Theform of the equation is:

e = S/E + 0.002 (S/S~)fl (1)

where e and S are the strain and stress, E is the elastic modulus, S~ is the 0.2%offset yield stress , and n is the Rainberg-Osgood exponent. This equation is usedto plot the stress-strain curve.

This report describes the form of the data in the computer files , the sim-plified data management schemes for data entry and retrieval , user instructionsfor data retrieval, and the various forms in which data can be retrieved fromthe computer. Complete FORTRAN listings of all the computer programs used fordata reduction and analysis and for computer storage and retrieval are given inReference 2.

~MIL-HDBK-5 recommends the use of the Ramberg’Os~ood equation to approximate the stress etrain curve and Ii currently belli~revised to Include Eq. 1 u the recommended form .1. PAPIRNO , R. P. AMMRC Automated Stress-StruM Data Anilysts, St orage, and Ret,leru~- ~ rr I: IbM Analysis ?Pogew..Army Materials and Mechanics Research Cente r , AMMEC Ta 79-16 , ApiS 1979.2. PAPIRNO , R. P. AMMRC Automated Stress-Strain IbM Analysis, Storage, end Retrieval Part 3: Computer ?~ogi’vm Listi*g,~Army Miterlals and Mechanics Research Center, AMM RC TR 79-Is, April 1979.

1

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COMPUTER DATA STORAGE FILES

Two data files have been established in the UNIVAC 1106 computer. The testdata are stored in a file which is catalogued under the name R*DATABANK. A secondfile was established to facilitate location of data for a specific material/alloyin the DATABAI4K file and this second file was catalogued under the name R*LOCATER.The location file also contains a count of the number of test data entries foreach material/alloy in the data bank.

Materials and Data Identity

A simplified procedure is used to locate all entries for a specific material.The procedure is dependent upon a scheme for identifying materials using a two-part code. One part of the code refers to the basic material: steel, titanium,etc. The second part of the code refers to a specific alloy form of the material.Each part of the code contains two alphanumeric characters and a user of the re-trieval program is automatically presented with code tables and instructions fortheir use at the computer terminal.

Each set of data for a single test has a serially assigned set number. Noattempt was made to group the data before the set numbers were assigned. Rather,data sets for different materials have been intermixed and the set numbers wereassigned in the chronological order in which the raw data were reduced. The datafile in the computer can be considered as a numbered list of lines with the datafor one test on each line. Data sets are entered into the file such that the setnumber corresponds to the line number.

Currently there are data for seven materials: steel , titanium, uranium,copper , tungsten , aluminum, and magnesium . The number of alloy forms for eachvaries since the current content reflects only tests which were done during a15-month period . Shown in Figure 1 are the code designations for the seven mate-rials and in Figure 2 are listings of the alloy forms available for each of theseven materials and the code designations which applies to each. The lists havebeen reproduced from computer printouts of the retrieval program. Note that thecode ZZ is used when no specific alloy was identified for a given material. Itshould also be noted that the current computer file of test data is not consideredto be a structural properties data base, but it is a compendium of analyzed re-sults of individual stress-strain tests conducted by the Materials PropertiesBranch. The material/alloy categories were established by using the designationssupplied by the principal investigators who ordered the tests and who, in mostcases , supplied the test specimens or the specimen materials.

COV E TAB L E FOR M A T E R I A L S IN DATA BANK

MA rERIAL (.;OEIE MAT ERiAL. CO1.IE Figure 1. Code table of available materials— -• -. reproduced from teletype output ofsrEEL ST TUNGSTEN WF retrieval program.T I T A N I U M ri ALUMIN U M ALURANIUM UR MAGNESIUM MGCW~PER Cu

2

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ALLOYS AND ALLOY CODES FOR STEEL

ALLOY NAME CODE ALLOY NAME CODE

ARMOR UNSPE C ZZ RARE EARTH lB4340 UNSPEC 1A ARMCO 2BMARAGE’-250 2A HI NICKEL 38WC—9 ALLOY 3A 1340 UN8PEC 484140 UNSPEC 4A LOW MAN GANESE 5BGILD METAL 5A HF—i ALLOY 684340 ESR 6A3% NICKEL 7A5% NICKEL 8AAF 1410 9A

ALLOYS AND ALLOY CODES FOR TITANIUM ALLOYS AND ALLOY CODES FOR TUNGSTEN

ALLOY NAME CODE ALLOY NA ME CODE

6—6—2 ALLOY 1A UNSPECIFIED ZZBASE SECTN 2A PM UNSPEC 1A

SINTEREL’ 2AW— 2 ALLOY 3A

ALLOYS AND ALLOY CODES FOR URANIUM ALLOYS AND ALLOY CODES FOR ALUMINUM

ALLOY NAME CODE ALLOY NAME CODE

DEPLETED 1A 7075— To 1A.75—TI ALLOY 2A WHISKER COMP 2AUN ALLOYED 3A

ALLOYS AND ALLOY CODES FOR COPPER ALLOYS AND ALLOY CODES FOR MAGNESIUM

ALLOY NAME CODE ALLOY NAME CODE

UNSPECIFIED ZZ AZ—61A 1A

NO OTHER COPPER DATA AVAILABLE

Figure 2. Code tables of all available alloy designations reproduced from teletype output of retrieval program.

Retrieval Scheme for Computer-Stored Data

A locater number is assigned to each data set by the EVALRO analysis programand this number becomes part of the stored data of the test. The locater numberis the set number of the just-prior-entry in the DATABANK file for a test of thesame material/alloy. The locater number of the first set of data in the datafile for each material/alloy category is zero . The set number of the last DATA-BANK entry for each material/alloy category is designated as the key set number.The key set numbers are maintained in a separate LOCATER file whose contents willsubsequently be described .

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The retrieval process can be illustrated with a specific example. Assumethere are a total of six tests for a given material/alloy category and that theset numbers of these data are 3, 7, 11, 18, 19, and 81. The last entry for thecategory is Set 81, hence the number 81 is designated as the key set number andis stored in the LOCATER file. To retrieve all the data for the given category ,the LOCATER file is en tered and the key set number (81) is read. Then the DATA-BANK file is entered and all the data for set 81 are read. Included in the datais the locater number, which in this case is 19; this is the set number of theprior entry for the specified material/alloy category . Next the data for set 19are read ; for this set , the locater number is 18. The process would be repeateduntil the data for set 3 are read. Here the locater number would be zero indi-cating that no further data were entered in the DATABANK for the specifiedmaterial/alloy category. This simple retrieval system was designed to avoid amore costly sorting process in which every entry in the DATABANK would be readin order to find entries for the selected material/alloy category and where sort-ing would be done using the material/alloy codes.

Content of the DATABANK File

Each line of the file contains the summarized data of a single stress-straintest. The line entry is a card image of one output card of the EVALRO analysisprogram as described in Reference 1. The individual data entries for each lineand their columnar positions are given in Table 1 (taken from Reference 1). Notethat the data and the test and material descriptors have been condensed and codedso that they occupy the first 72 columnar positions. The last eight positionscontaining the locater number and the set number (each occupying four columnarpositions) are used in the retrieval process.

Table 1. EVALRO OUTPUT PUNCH CARD DATA

Column Entry Format

1—6 Specimen number A67— 8 Material code A2

U 9—10 Alloy code A211— 14 MPB notebook number A415—1 6 Notebook page 1217 Test type code I i18—23 Test date 1624—28 Test temperature, deg C 1529—30 Log of strain rate 1231—36 Ultimate strength, ksi F6.l37—40 Elongation , pct F4.l41—44 Reduction of area, pct F4.145—48 Rockwel l C hardness F6.249—54 Elastic modulus , mega psi F6.255—61 R—O exponent F7.262—68 0.2% offset yield strength, ksi F7.269—72 R-O standard error, ksl F4.173—76 Locater number 1-477— 80 Set number 14

Content of the LOCATER File

The LOCATER file has two sections. Section 1 is contained in lines 1 through7; each line is pertinent to one of the seven materials for which there are data

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0 ~~ 0 .C ...-4I C -~~~~~~~~~~~ IC 0 41) In C C ‘5 C 41 U 0 Sn II. In I c 0 Li — In 01 C C C a-’ 41 U In 0 IA 1.4~ UI -•,_ lI~ C4J t~ ‘ — 41 0 0 3 CI . II.. 01.1.1 .4.1 ‘_ ~_ CI 0 0 3 CI I• IA 1. 0 41 01 1. C 0 UI CI II— In 1. 0 41 01 1. C 0 In CI C—0 4) I n 00 C 4 )D. 3 4 1 C ~~ I n I O W I n V V C C IQ. S CIC — I II 4’~~~~ 41 W * 4 . I 41.. >I.. In 410’ 1. 4.1.— C 41,~~~ J 4 1 . >1. Ul 43014 1 4 . 4 1 OI UI U I I 4 1 L U I . 4, 4.1 .41?’.. IU -.— C .0 01 v, In , S LU L 4 14 ’ I S r .I O L > 1 5 I nI n4 , 0 I 9 4.1. 5. O L > - . C v , E 0 , C 3 1.1. 5.0 C U4 1 L 4.1 41 01 U . 3 0 1 0 ,0. 0 C U C I S. #1 0) 41 I-U .3 4 1 0 ,0.I S 5 ‘ - ‘ -~ UU O ) E S 0 0 . 0 - C .0 U U U 4 ) E C 0 O . 0 I -I 4 J C L I I n I n UU.~.. O C 7 C ) 1. $ 4. I 4 1 C L U I 4 , 0 0 . —O O Z S j 1.51 0 4.4 0) 4 1 4 1 4 1 4 1 L I 1- — O U I n Q L i - .ft e .a 41 g , ’ 5 4 1 . 0 L I I n - . - o U g ,0,IaI 0, 0. . 410 41 41¼- IS C o — a 0. — 010 41 41¼- C C a — a4 1 0 . ,— 4 J L 0 0 11..— 4 1 4 . 4 1 1 . L X • 4 1 0 . ~~~ 4 1 L I 0 0 1 . . — 4 1 1 . 4 , 1 . 1.5 IIn SC 0. 41 U UI U f l O . In 4.1 0. C Cl S In 9~ 0. 0 U 0 0.0 O . In 4.1 0. C 4?- 7 II) U0 ) 0 0 ) C 4 - 4 1 0 1 4 3 4 , 0 0 4-I C — In 0 4 ) 0 4 1 4 1 II- 41 O I S IA 04.1InC - .— -— fl C -— 01, 41 C 41 I — S In C — . fl C .~~ 01, 01 C C I CI n 4 1 C LO 4 1 I n 4 1 - .L~~dI ‘ . C 0 , C I . 4.C’0. 0 4 1 0 1 4 .0 I n 4 1 L I n 5 0 ,CI

~~ ~~~CC ~~ .~~ In ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I ~ ~~~CC

>‘•~ 4. 0. P.. 0 ,01 4? 0 4’ C . 01.0 • U C 4.1 )_ 0. P. CC) 0) ‘0 S - . C 1. 01.0 • U C II C C C — 0’ U 0141 4) C 4’ 4’ .— 0,4.. 1. -— 10 41 C C C. 01 U 014’ 41 C 4-’ 4-’ .- 0.4’ 1. 50 414* 0 4 1 . — S I C C L I n CU L 1 9 L I . . - 4 ) > 45 0 4 1 4 I C C L L I C U t O 9 L . — Oj >I LI C a > 4 1 L 4 1 5 n J L 4 .~~~ 00 -— Li a 0 1 4 1 1 . 4 1 3 .0 3 1 . 4 . . — 0 0 5 ..-I- .- C’) 04 1 0 0, 0 C IS 41 001 4.1 01 I_ — Cl) 04’ 0 a 4. 0 41 5 41 4,05 41 01C C I I . 54.1 I In 4 1 4 1 4 - . - > 4 ) 9- CI t.~ = C .. I s. . 54.1 I 4, 414J ’I-~~~ > 0 1 9- 41 ?-.UI’aCC.l 1. • 5 0 1 0 4 ) 4 3 4 1 4 , 4 , 4 3 00 s— Cl I U C l ) 0 r- . 1 1 .’ 5 4 ) 0 4 3 0 1 4 1 0 9 4 ) 1 .0 0 .— 4l1. ?. In SC-) E U CI 1. 41 C ~, -— C 0. — 1. 1. P.. In 5Cc) 4) U 4) 1. 0 C In .0 1* C a — I. I41— r c - Ui C. U . L 9 0- C 4 1 L 4 4 1 0 ?- C C I 41 . l— W Cr U . L 30 I -C 4 1 I . 41.l0 1 . - C 4 101 Il) — a a 0 41 015 0 0 4.14.1 41 U’ s* C-) a 0. 0 41 015 0 0 4-’ 4.1 4) InI I n 0 C C~~~ 0 C 4 ” 4 3 4 I 1. 4 1 0 0 I -. L i 9 - I -. I n O C C O •~~~ 0 C 4 ’ 0 1 4 ) 1 .’ .V a. p.. Ci a ¼~~..- U t 4 ) 4 1 — 4 . 4’ 41 0. o C 0. 0.0 P- . Ci I,. .,- 0 5 SItI.— Ca 0 CI a I— a — I— 0 o C 0 I— In 0.41 CI 5 41 0. C. U) — C. 0 In 41 0 C In 54 1 CI 5 01In I n I I 4.~ In 0 0 0 C I S .— C I 5 0 4 ) I L II nl L i I 4) In O O C C ) 0,— 0) S’l 01I In 4) • 0’ 4) 5. 4. 0) 11- 0. 0 9 a 1. C a In 41 I C 0’ Cl 1.4.1 4,11.. 0, 0 C 3 0. 4. 0,4 I0 4 1 In .4 0. C-. V 0 C U 0 . a C . E .5 C I.. I 0 4 1 ~~~~~ 0. C. -o a C U 0 . — -.- I— 43 C C 4.41 In C 0 . 0 II. CI 0 4) In 414.1 ¼- 41 = . . 4’ -— C) In CO. 0 ¼. 0) 0 0) In • 4 14 1 ¼- 41 C- — a $C III U) 9. a Li ‘1.- 43 — .5 0) In 01 5 0 In 4’ 4’ ° I C In Ia.) 4. 0. Li 5. 4) 1 . 4 1 C 0) In 41 0 41 .4) . 4 . 1 4)5 3 a a ...~ I.- CI 41 5 4 . — 41 0 . C In 1. 41 s a a~~ I— 01 CI a 1. 4-’ .— ,— 4) 0 • C 4, 1~ IP C C C. — C 10 01 0 — 4 1 . 0 4 . 4 1 41 C . C C I — — 5 In 01 0 -— -. 0 4,41 41 C —U In 0. LII 4) 1. 50 ¼. 4. In C — 0 U U In a a Li 5 CI 1. 0.0 ¼. C LI UI IS .0 Si —

~~ ~~~~~~~~~t’~b- 1 I ~~~I .~~~ 43~~~~~~~ V . -~~~~ 04- 4’ I ~~~~~~~~~~~~~~ • ~~~ 43~~~~~U ’0 41 4)~ _ 4 5 Io ~~~~~~ a

~~~~~~~~~~~~~~~~~~~~~~~ 41 ~~~~a n-.~~ 5 2 0 8 ~~~ 4 3: >-~ .-~~01~~~ z’ II In 43 1.- 0 0.0 4-’ 41 0 1 4 1 4 1 0 41.. U- l_ U, I— 0 .0 4.’ 4) 0 ) 4 1 4 1 41~~~ C IL. I.~~~~~~~ •~~ 5 4 1 C L I n C 4 .Q U CO U E 4 . 1C 0 ~~~~~~~ .7 0,41 43 L I S O C L 0 U 0 0 0E 4 ) C 0I ~~~~~ ~~ & ‘ ;‘ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ •~~~ I .!~~~C~~~ 5 ~~~~ In IS~~~~~~~~~~~~~ I . C 4’ L V • I nI 1.1.4.1 9. 4, 4 - 3 - r l _ I n CI * 4 1 4 O 0 I n 1.4 .14 ’ 4 UI 9 - 3 ~~~~L I U I 4 1 U 4 1 5 4) 0 0 0 I1 9 O~~~~~~~ In~~~~~~~ 4 1 9 - U 4 I ~~~~~~~~~~~~~~

sIt 4 1 ¼ - * )* I~~~~~

.~~~~~ ~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~ I ~~~~~~ .~~~~~ t5~ ~~~~~~~~~~~~~~~~~~~— I 4, 5 a. c1 ’0~~~ 41 .-Oi l . 5 9

~ ~~~~~~~~~~~~~ -

L ! _ . _ __ _•_ ,, I _ _ - - ~~~~ .- -~~~~~~-.~~—..--

- 41_~~

sI-~~~~~~~4_~=z~~ ~~~~~~~~5 - - -

~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~ - - - - -

- - - - - - -

41 41U- 1 0 5 .4) 4 1 4 ) 5 _ C . lO Di O i 0 . 0 0 0 5 _ S . U- fr . 0 5 . I n 4 ) 1 . 4 1 # 1U 0 1 0 .0 0 0 4 1 1 . 5 .‘In S. 0 1 5 . 0 O > 0 .U 4 1 .- 4)4.¼- ..CA ‘5 I 1~~~V) I- W I C W > a 4 ) a - . - 0) 4.11- C - I -C 5 • I— 0 0 -— U 41 4 10 5 41 4-’ 4’ 4 ) 4 4 C I 41 0. In — 0 0 .- IJ 4 1 0 5 41 -4’ a Ci a-I s ISO.I/l 0 5 S. = 41 C O — 0 0 . 0. 4- 41 41 = C) ‘5 1. U In 0 5 I. C C = t — 0 0 .0 . 1. IS C) C 4, C 41 41 IC 0.01 . C C 3 4 1 ’ S 0 — O L I 0 0 i 4- C I n C 0 .0 1 . 4 1 41 3 C C U . — O O O I CI C U14’ 0 - . .s- U I. C) 0 5 . 5 . 4 j - ~~~ U 0. C 1.0 -— .0 0 >1 -— #1 1. 4) U I. S. C) ..- U 0. 0 LI 0 — ILi 10 L I U L I Cl 41 -.- 0) 0 0’ 41 41,4’ #1 UI 3 -— C $ Li a 01 1.4.1 In 4) 4. - 4) 0 CI 41 4.4.14.1 LI 3 — Cz,— li CI I — .5 41 U 4.) 4.’ 0 0. LI 4’ 5. -0 4. I— 14 CI I — 41 = 4.1 4-I 4.) 0 0. U 4’ 5 I01. 4 I E I n 0 5 4 1 4 , C C I V 0 4 ) C ) 3 O L ) I r—’ a B I n o rc j C I S ’ V O C ) W S 0 0t 3 In U .0 0.0 010 = _ 0 41”- — 5 3 5. LII 4) -C 0.0 010.- C C . 0 W 9 - .— 5 0 4 ) 4 1 0E 3 = 4 1 4 1 4) 0 . 4 ) .c — 0. 0 41 U E C 3 C C C4 -~~54)C4’ 4 ) 4 - 1 . 0 SI O C O C L # C E S . # ’ 0 1 .4’ 4)9-L 0 3 4 1 0 4 1 0 4 1 . .. C E #10o 4. 0 C I) = 4, U S . C — In C . . C) - 0 4. 0 = I.) C 4, U S .- In C-. - CI IC 0 Li — Un 41 5 41 .0 4.’ C Li 41 0 In S. 9-- In C 0 Li In C ‘5 41.0 4) IS U In 0 IA 1.01. In¼- 41 4.’ #1 -— -— 4) 0 0 3 C . 01. 4 1 a 4~I .. — CI 0 0 4, CI II n S .0 C 0 ,S .CV , f lC1 01- .— - 4I I_ 0 IS 0 1 1- C OL I C ) ¼ - —o C ) ,n 0 0 C 4 ) 0 . 9 4 )C 0 I o w 0 0 0 C I J0 . 3 4 1 C In5 _ a s- C ) 41 . . . a C >I— In 4,01 I 5 _ a . — 4) 4)-.. 4 - ) 4 1 >I. In 4)01C . .C 4 1 6 ) U I L I C L U S . 4 1 + 4 4 1 1 1. 4 1 . - C 4 1 0 ) U I I n LO S . 4I 4 ) I S P .V L 4 1 . . f l In 4 1 E 0’ C 3 4 - 4 - 4 - I - O L > • . - . C I n I n EO ’ C 3 1 . 5 . 1. I0 C L 1 6 ) 5 _ a 4 1 4 ) “ U - 3 1 0 010. 0 C U C ) 5_ a O ) W . U . 3 4 1 0 10.C 0 I - U 0 0 4) 4) V 0 ,0 1 1 I C IS I - U 0 1 ) 4 ) 4 , 5 0 0, 0 5 — ILI I +J L L I U I O U I- - 0 0 3 4) 4- I.. I a S . O L IU C J .- 0 O y Q J S.UI O UJ C ) In i O C .U I L I O I -O U I f l S C’ -— I n0 6) I U C I S S L I I A ’ OU I n a L i -

0. 0. -— 410 6) 5 4 - — CC 0 0. 0, 0, .. 0) 0 0) C’I- CC 0’ 0.- C C . _ 4 4 L 0 4 ) 5. .-’ 5 5 .4 1 1 . 5 .5 • I S O — 4.4 1. UC ) L 4 1 1 .0 1 . 5.In 44 0. C U In 0 4 10 In 41 0.5 4) I In SC 0. 5 U 0 U 41 0 .~~ In 4.1 0, C 4)— 4. In U 4 ) 0 41 C ¼. IS 0’ E 14 In 04 . ’ C —.7 In U 410 6) 41 9- C 01 E In In U 4)InC - — — “fl C . . 4. 4) 0 C -— I Ill C - — .,. .s,C -.- 01, 01 C s I ~ - -— 3 I- 01- 100. L I C ) C S .0 4 1 4 1 1 5 _ I n . 0 0 .4 1 • 01. 100. In 411. 0 L I C . I - L 4 , - C S1. - 4 . 5 . 4 1 + 4 4 , 4.1 0 1 4 1 I n 0 3E- . - I - 4.C C I J E C 4 0 ’ I n I n V I E . - IS C C C 01 C . In 0 4) In 0 4) 41 4) 0 4) C C C 01 C n-- • 4 1 0 C) 41 4) CI C) 041 4.1— 0, 5- 0.41 41 0 41 . ¼. 4. 01.0 • U C 4’ 4 . U — 0. P. 54 1 C) 0 4 1’ . C I - LI > 4 1 U CC C C. - UI U 0I.~1 4) = a U~~~ 0,41 L I ’ 10 4) C CC — 0. U 01+4 CI C 4) 41 ,— 0.44 5. .... IC 4)CI C C — 4 1 = I S S . U I O U I n 3 5 _ 4 ) > C) C C — C C C L I n C U i 4 1 3 L I . 4 1 0 1

Li C 0. 0 1 4 1 L 4 1 3 55 _ 5 _ U U I C I Li C 0. 0 1 4 1 1 . 4 13 4 1 3 1 . 5 . — U U I C . -I— — Cc) 0 .J 0 0. S. 0 C 0 4) 410’ U 01 I— — (14 04 ) 0 0. LI 0 41 41 CI 00’ .-’ 01.0 C . 1 I - s - On) I I) 41 4’ 4- — 01 4) II. C) ?~.. I r C .. I — — LI 54.1 I In C 41 9- — 41 4)4- C) P.UI’.J OC-I 1 .’ 5 4 1 1 ) 4 1 4 )4.1 41 3 6 ) 5 .0 0 di 0 1.10114 = • W I n 4 ) 4 1 4 JIn 3 4 ) 1 . 0 0 . .C )= P. In at.) E U 41 LI c C II .0 1 5 0. — S. I LI P.. In 0,11.1 4) U CI LI C 4-1 41 -— C 0. .-. = IS Z I.. Ui C.- ‘ U L 3 0 . 0 4 1 S . I n ’ a O IC i O C ,- r f r -a C— - I -U 3 0 ’ - C C L i.’ ’ O P —C CC) C-I — 0. 0. 0 41 015 0 0 4-I 4-I 6) In I CI 1%) -, 0. 0 C 01.0 V 0 4’ 4’ CI InI A OC CO ~ CI 0 C 4 1 6 ) C ) L I - C I 0 4 1 l ’ L i 9 - I - - I nO C CO IC’ 0 C 4 ’ C I C I L I . . C I 0 I n s -Li II- ,—CI 0.0.0 1.. 11.1 4.4 ¼- -.. US 4 1 4 4 1 — L I 4~ ‘0 0 . 0 ‘5 4) 0 . 0 . 0 P. 1’.) UJ I.- — US C141 1.44 410. 0 C0. I— a — V.. 0 In C 0 I— In 0.0 C) 5 41 I 0. I— a P.. 0 In 3 0 P— In 0 . 4 1 CI 41I A U II L i I U ~n S. 0 C 6 ) 0..- 4) 0 4 1 I n I n I L I I 4) In O O C 4 ) 5 , — 0) 4-I C)In U I 0 Cl CI S. a CI II. 0, 0 C 3 0. 5. C a’-.- I ~~ 41 I 0 OS 41 1. a C) ‘4- 0, 0 -C 3 0, = C olI- IU # 1 I 4 1 + 4 0 . P . O 0 = I) 0 • .— -— — E 0 = S. U 4.) In .0 0. P . O 0 C 1) 0 - — — I— 4, 41 = LI41 In C 0- 0 ‘4. CI 0 4) 41 - = U C 0 I -— C) In CC. 0 ¼- 4) 0 C) In . 41 4.) II. 15 C . 4 IC In U) a a Li 4. 6) = # 1 5 4) In 41 0. O I n 4 1 ’ -~~~ 41 0 In a a a Li II. . 4) = 41 .C 4) LI 4. 0. 0 In .14 — 4’ 4)41 Lii -.4 I 6) CI 0 . 5 . #1 — — 41 0 ‘ = UI U- C 30 . 10 —I 1-. CI 4) OI. a .— — CI 0 - C In 4--.0 5 *— — C .41 41 0 -— 5 ‘0 4 . 4 1 5 0 1- .0 .C C.1’ C In 01 0 — C I - V 41. 40 C C —U U In 0 . > Li 5 6) 0 = 0. 0 II~ C I. In 4) 41 41 4 ) . V U LI In 0. 41. Li 5 w LI a-c C- C LI In CI l~ .0 C I — VC I —a 0. Li UI Si 4) = -— 4’ 3 . 0 — 0 S = 6) 15 I— U.) a Li In 5. 41 CI C .— 41 3.01-0 > C I~~~~~~~~~~~~~~~~ I ~~~~~~~~~~~~ I2 0 a - I ~~ 2 4.) ~~ 4.1 dl C In 0 — 0 — ~ I ~~

s’.. C l.iI - ~ ~~

‘2 V 2 C) C In V — V CI 1— 41

~j ~L t 5 _ )~~~~4

I!‘~~~~~ °2 ~~L 4 )

0~~ 6)~~~~

¼- 4 ’t I ~~~~~~~~~~~~~ 0 O 4 ) 4.1~~~~~~~~UI O I S ¼ - #IC C X I -. 7 0.— + 4 5 3 I 4 ) 0 . U IU L 0 1 L I U I U . Q. . C415I..4. U + 4 5 3 I 6 I 0 , I n #I L IO S U U I L I O ..X S CI n a ..--.- 41, S SC I na ~~ -- ~~~~~~~~ 41,3 4 1C C I 6 1 Q I nC 0,~ U C Ci 0. 4 ) - . - UI UI 0, 3 = — 9, C 0 . U C CI 0. CI .. In In 0, 3 —U 41 . . I S . E 5 _ C ) 1- O 1 C O Q 1 ‘5 6) U S I O a E — 4 ) . - O .C o 6 ) CC 41 L I I - C U J O C ) C L I C C S . 6 I C ¼ -C C) I n - — 15 4 - I O 4 J C L I C C) C II_ C

C — C LI 0.0 I) 0 4’ 9 O C . - 0, 1) #1 0 41 L C — C 5. 0.0 LI U #1 01 0.C 0 10 4.’ 0 10

I I — - — I ~~~I I

I 01 1

4) CI I C I n• I I n + 4 In11. ~~~~~ - - o ~~I I~~ — B ~~~~~~ 4 10 I O ~~~~~~C 14.1. 2 I ~~ ~~~~~~~~~~~~~~~~~~~

I0.~~~.; I S sS . 2 I

4, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 11I i •.IU- I.. V 5 .4 ) I nC I L IC I . IU OI O I O O C O C L L I 0. 5-. 0 1 .41 I nC ) S . C U J U O IO1SO 0 0 . 0 5. 1. IIn~~2

~ S I C 56.1IS..~ 4 ) 4 . 5 . 1 4 1 I l41~ 2 0 8~ 2 C~~~~ CC ) a 4) C ) 6 C~~~~ C0.InC S S. C C = 0 — V 0.1. 40 CI 0 CI ~ If 1 0 5 LI = IS C 0 ,-V 0.0. 1. ‘5 CI C ~ -~ I~~~0 4,

0. 01. 41~~~~~~~~~~~3 C 4 1 U O V~~010 ) I S I n I —)~~~ >, ~ ‘ ~~~~~~~ ~~~4 1 U 8 0 0 1 C III I~~~~~

‘~~~~~~ 4 1 > 20 12 4.4’~~~~~~3

~~~ 5 S . C 6) 1.44 ,) 4 ) S I - W O W I C 4 1,

0_ 6.)~~~~~In 0 2 4 1 3 . C C .~~~0 0 2 C )!

I ~~~~.0~~~o 2 . 2-o w I2... I

4) 0 ~ ~~~~ ~~~~~ ~~ 11 50 41 6) LI 4, C 4, IS 41 = 4) SC) .0 I

I

~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I

C -r ¼. C +4 44 s — 4) 0 0 3 CI I ~ II- ‘ 5 + 4 4 - 4 — . C) 0 0 3 CI IS I LO IC O I S . C O L I W 4 - — U I n S - 0 IS 0 1 5 . 5 0 4 , 41 —04 ) I n0 0 W a 3 WC 1 -I n I ~06 I In 00 a O I

~~ . I n I

2 I C I - 4 1 2 0) I n I n4 1 L I U U- 6)4) 1St..V I . > I -.4l In I n~~~~~0I C 3 ~ 0 2~~~~~t 5~~~’~ ~~~~~ ~~~~~~~~~~0 0 0 4 ) S. 6.) 4I CI - I - U ~~~~~~~~~~~~ C 0 - I - U U U C ) E S O C - a C-

t. . — 3o c 4) = LI I a 5 . I n L I U U r 0 0 C~~~~~W =54’ LI _~~~~~

45 0.Li I — L I 0 4 -I 0 I I nC C L I I - 0 UI n0 .L i~~ 0. - 4*0 91 CII- — CC 0 . 0. 0. 0. 4) 0 0) 4 1 9 — . CC 0-I- 0.

~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~

• >‘~~~~°- . C~~~~ O C I - 1 . I n..ç S O I 4- 100. -~~ ~~~~~~~~~~~~~

0~~~~~CI~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * ~~ ~~:~1I~~ C 0. >~~~~~1 C ! 4 1~~~~ S.1.I ~~~~~~~~ Li C a 4) 01501,, — 2 ,. ..~ 2 — 01 ¼. I’. .0 C “ I -— s— 5. 0.4) I In 4 1 4 1 4 -j 9 41 11.. 4) P.U VIICCII

UI ~~.C I 1 1~~~~~~~ 4’~~~ 3 0 1 I -0~~~~~~~-- CI I 4-1

(14 C C- i ~~~~

0 0 ) C 4 I n 3 0 1 U- 0 0 41

‘5 n-. Z I.- IU .~~ .- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SII-~~~~I-- U.I C.—

-~~ 0 4-’~~~ 1.. 0 I n . Li ’ l— . 0 OC C O *10 0 C # I 6) 6 ) L I I - C)0InI -.L111-~~ ~~~~~~~~

C.CSI a I~~~n - U ~~~~ -O) a .--~~~f* I IS~~~~ O I C P.114 #4 11.- I- L I C 4 5 4) .- 1. 41 41~~~~ 0I5U 0. . — 2 0 0 C a 0) LI 4) In In I Li I 4.) In 0 0 C Cl 0..-- CI S LII 4)I - $ In I I 1. 41 4) ‘U C 0 3 4. 0S. IA 4-I I 0 0’ CI LI a 41’~ . 0. 0~~~ 3 0. LI C O1~~I - 41 _ In +4 0. C. 0 C U 0 . — . 1 - IS C LI 0 -4-) In.0 a P.O 00 LI 0 - — -.- I-- 4, IS C =

~~ 4) InC0. 01 41

~~~~W~~~~~~~ C I I n ’ U ’ d - ’ ¼~~~C C ~~~~~~

~~~~~~~~~~~ 0~~~~4 1 2 4 . 1CI

~~~~~~~ Li

C)~~~~ 0 . S .~~~~.~~~.”. 6) 0 • C I n S . I S 3 a W + 4 I— CI S L Ia .- , — W0 - C LI I .

~~~~~~~~~~~~~~ Li~~~ 41~ =a~~~-~4,p’

412~~ 0 - t ~~~ ~~ I

~~~ . 2 & ~~~’~ ~~~ E~~~~~~~~~;~~

41

IC- oiL • 2 C ) C~~~~~~~~~~~~~ 4)~~~~ Cl ~~~~~~ ~~~~~~~~~~~~~~~~~~~~~ C I ’ 0~~~~O . ~~~~~0i *- CI I~~~I1( t~.! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~ - ° ~~~~~~~~~~~ !2~~~! I14EI- O &~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .-~~~~0- Z &.s C L I L I C L I O U C O I .IE # 1 41 CV 8~~~~L4J~~~ 412 IS~~~~ O~~~~~~~ O~~~~ C 4 C I n~~~~~~~~~~ 4.1 .-l - ~~ O C~~~C ~~~ ‘ I n II ~ S. In 0) .ISE4.’O~~~~In

I L L i~~~~9. In 11.3 . -‘L I n I .C) I C C OV

~~~~~~~~~~~~~~ ~ ‘

~~~~~ i! ilh

_ _ _ _ _ _

~~~~k.. - 4-S’ - —~ —- -—--—-—- ---‘- .. ...-..—.——a.. .‘—~- — - - a-—_,, _,._ ~ —

r - -

~~~~~~~~~~~~~~~~~~~~~ -. —

available. The first two columns contain the alphanumeric material code (formatA2). There are then 19 four-column groups in which are entered the key set num-

P bers for each of the alloys of the given material. The first four-column groupis for the code ZZ alloy in the list. The second groun of four columns is forthe code 1A alloy, etc. There are zero entries if no alloy has been assigned toa code designation. (Se.... Figure 2 for alloy code designation.)

Section 2, occupying lines 31 through 37 of the LOCATER file, con ’:ains datafor the number of tests. The columnar format is the same as in Section 1: thefirst two columns contain the material code followed by 19 four-column groups.The material cc’ie of line 30+J is the same as that of line J. Entered in eachof the 19 four-column groups is the number of tests for the particular alloy codewhich is specific for that line position. The line positions of the alloys inSection 2 are the same as in Section 1.

-: Assuming that the line number J and the position number of each of the four-

column groups is L, then referring to the code tables given Figure 1, we haveassigned J=l to steel; J=2 to titanium; J=3 to uranium; J=4 to copper; J=5 totungsten; 3=6 to aluminum; and J=7 to magnesium. The position numbers were as-signed as follows : L=l to the ZZ alloy; L=2 to L=lO to the lA to 9A alloys; andL=ll to L=19 to the 18 to 98 alloys.

INTERACTIVE DATA RETRIEVAL PROGRAM

Data can be retrieved by all authorized users of the UNIVAC 1106 computer onTektronix 4014 graphics terminals, on 132-character carriage-length standard tele-type terminals, or on 80-character carriage-length portable teletype terminals.The retrieval program is catalogued in the computer under the file name R*RETRIEVE.The file contains two main programs: one for the graphics terminals and one forthe tele-type terminals. There are a number of subroutines in the program whose

— function will subsequently be described. Listings of the FORTRAN statements ofeach of the routines of the RETRIEVE file are given in Reference 2.

User Instructions

A potential user of the RETRIEVE programs need only be familiar with thebasic operations of the demand terminal being used including the various keyboardoperations, and be familiar with the standard procedures for accessing the UNIVAC1106.

After the conventional RUN statement has been accepted by the computer, the- I

user must eI~ter @ASG,A R*RETRIEVE . and wait for a response from the computer . Ifno other individual is using the program, the word READY will appear at the ter-minal and data retrieval may be initiated. If the program is in use a messagewill appear to tell the user that the program is not available.

If the program is available, the user executes the program as follows :

1. On a graphics terminal enter: @AD D R*RETRIEVE.CRTUSE2. On either teletype terminals enter: @ADD !~*RETRIEVE .TELTYP

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.

~~~

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The first response of the computer will be the word READY appearing fourtimes. This response indicates that the DATABANK and LOCATER files are availableand have been automatically reserved for the user. The program then begins andthe user is asked to make specific keyboard entries in response to instructionswhicti appear at the terminal. When all the required data have been retrieved,instructions for terminating the program appear.

Data which are retrieved appear as tabular listings on the graphics andteletype terminals. As an option, stress-strain curves may be plotted on thescreen of the graphics terminal.

Material and Alloy Choice

After initial terminal preparation instructions appear, the material codetable shown in Figure 1 appears at the terminal . The user is asked to enter theselected mate rial code. The appropriate alloy code table , from among those shownin Figure 2 , would next appear at the terminal . The user is then asked to enterthe selected alloy code . After the entry is made , a count of the total number oftests for the selected material/alloy appears at the terminal .

selected Data Retrieval

Four options for data retrieval appear at the terminal:

1. All the data for the selected material/alloy.2. Only data within a range of yield stress, to be specified.3. Only data within a range of ultimate stress, to be specified.4. Only data within a range of Rockwell C hardness, to be specified.

If the user selects to retrieve all the data , printout options as describedsubsequently are presented at the terminal . If only selected range data aredesired, the user is asked to enter the parameter of interest. The computerresponds by printing the minimum and maximum values of the parameter of thestored data. The user is then instructed to enter the desired minimum and maxi-mum values of the parameter for the data to be retrieved. After the entry ismade , the computer responds by printing the number of data sets whose value ofthe selected parameter lies within the selected range .

Data Printout

Use rs of graphics terminals or 132-character carriage-length teletype ter-minals are presented with two tabular printout options: a long form or a shortform of the data. Users of the 80-character carriage-length portable terminalsare given no choice; only an expanded short form printout is available. Each ofthe printouts is described below.

1. Long Form. A sample long form listing is shown in Figure 3, reproducedfrom a terminal printout in which all the data appear for aluminum alloy 7075-T6(Code AL-lA). Note that all the test data in a line entry of the DATABANK, aspreviously shown in Table 1, appear in the listing. In addition, values of the0.1% offset yield stress and proportional limit stress also appear. These havebeen calculated using the plastic strain term of Eq. 1 (see Reference 1) in theform:

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_____ ~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~ ..- - -.,- - -—

~

--.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

e1, = 0.002 (S/S1)~ (2)

where ep is the plastic strain, S is the stress to be calculated, S1 is the 0.2%offset yield stress and n is the Rainberg-Osgood exponent. For calculating theproportional limit, it was assumed that the plastic strain had a value of 10microinches per inch. This value is the least count of a Class B extensometer.Theoretically, the calculated proportional limit would be the value observed ifan offset test had been performed on the specimen with a Class B extensometerinstalled.

2. Short Form. A sample short form listing is shown in Figure 4. The dataappear in two side-by-side tables. The data missing from the short form are asfollows: proportional limit and 0.1% offset yield stresses; specimen number,notebook reference, test date, standard error of estimate of Eq. 1, and teststrain rate.

3. Expanded Short Form. This listing is the only one available to users ofand 80-character carriage-length portable terminal and a sample is shown in Fig-ure 5. The listing includes all the data of the short form and, in addition, thetest strain rate and the proportional limit and 0.1% offset yield stresses.

On graphics terminals if more than 56 lines would be required for a fulllising, only the first 56 lines are displayed. Then there is a pause in the pro-gram to allow the user to study (or copy) the data. The user is instructed tostrike RETURN on the keyboard when ready to continue. The screen will then eraseand the listing of additional data will appear on the screen. The user is alsorequested to make note of the set numbers of any data for which graphs of thestress-strain curve will be required.

LON G -FORM LIST OF DATA FOR MATL CORE: AL- lA

SET TENT LOG MODULUS R-O P—LIN .1%-YLD .25-YLD UTS SEE ELMS N-A ROCk TEST WINk - SPECNO DES-C EDOT 11— 951 EXEN T P.S1 ESI ESI KSI 1161 PCT PCI C-HE DATE FADE NO

684 20 -4 9.88 28.07 56.34 66.39 66.00 76.B .1 9.6 17.0 -1.0 81778 1867-30 III683 20 —4 9.71 23.00 02.53 64.18 66.14 76.3 .2 10.2 16.2 —1.0 81778 1867-30 C2682 20 -4 9.90 21.14 01.56 64.10 66.24 76.8 .1 9.8 13.4 -1.0 81778 1867-30 Cl681 20 -4 10.48 14.25 45.80 63.”7 66.42 70.7 .8 9 0 26.0 -1.0 81778 1867-30 82680 20 -4 9.70 21 .41 00.88 63.08 65.16 74.4 .3 7.6 21.8 -1.0 81778 1867 -30 81

455 20 —4 10.06 16.85 44.66 58.70 61.16 74.6 .1 6.3 10.1 -1.0 31378 1866-10 8454 20 - 4 10.31 16.4? 45 .34 59.95 62.52 75.7 .1 6.0 10.4 -1.0 31378 1A66-10 A445 20 —4 11.29 14.95 43 .95 59.80 62.64 76.5 .1 6.4 12.0 -1.0 30978 1866- 6 7075—8444 20 -4 11.25 16.23 44,72 59.39 61,90 76.4 .2 8.2 11.6 - 1.0 30978 1866- 6 7075—8416 20 -4 11.52 17.85 51.38 66.50 69.13 80.0 .3 10.0 18.4 -1.0 21778 1865-12 7075—8

410 20 -4 10.29 14 .52 38.75 53.21 55 S1 70.2 .1 7.5 11.0 — 1 .0 21778 1865—72 7075—A

a *L I ,11N0 IS C O M F I E T E FOR MA IL A L — lA * TO CONT INUE THE PROGRAM RET RETURN

Figure 3. Sample long form listing of data.

LISTING OF SHORT-FORM TEST DATA FOR MA IL/ALLOY AL --lA

SET 11111- EMOD .25—ST 018 11-0 ELNII R-A N — C SET TEMP kNOll .25-ST UTS N-Il FIN S N-A k- CNO 8kG-C 14—FSI 151 lIST EXPNT PCI PCI HRII NO DE0-C N-PSI 1151 (SI EX FNT PCI PCI HRD

684 20 9.88 68.05 76.8 28.07 9.6 17.0 -1.0 683 20 9.11 66.14 76.3 23.00 10.2 16.2 -1.0682 20 9,90 66.24 76.8 21.14 9.8 13.4 -1.0 681 20 10.48 66.42 70.7 14.25 9.0 26.0 1.0680 20 9.70 65.16 74.4 21.41 7.6 21.8 —1.0 455 20 10.06 61.16 74.6 16.85 6,3 10.1 -1.0454 20 10.31 62.52 75.7 16.49 6.0 10.4 —1. 0 445 20 11.29 62.64 76.5 14.95 6,4 12.0 -1 .0444 20 11.25 61.98 76.4 16.23 8.2 11.6 —1.0 416 20 11.52 69.13 80.0 17.85 10.0 18.4 1.0

4I~ 20 10.29 55.81 70.2 14.52 7.5 11.0 -1.0

*811611MG IS COMPLETE FOR MATL AL- lA * 10 CONTINUE THE PROGRAM RET RETURN

Figure 4. Sample short form listing of data. -

7

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200-

150-

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

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I , ’0.000 0.002 0.004 0.006 0.008 0.010 0.012

MATL UR-I A SOLID CURVE: SET 17 STRESS IN KSI & STRAIN IN IN/INDASHED: MAT L UR-1A SET: 371 BROKEN: MATL UR-I A SET: 373PROP . LIMIT , 0.1%-YIELD. AND .2%.YIELD IDENTIFIED ON CURVES

Figure 6. Sample graph of stress-strain data copied from the screen of a Tektronix 4014 graphics terminal.

There are also plans to establish a computer file of fracture toughness testresults. In conjunction with this effort, we plan to develop a characterizationscheme in which materials would be classified according to chemistry and thermo-mechanical treatment. When these efforts have been completed, it should be pos-

- - sible to retrieve toughness data on well-characterized materials. Future plansalso include the reclassification of materials for which tensile data are nowavailable and establishment of a new data file of tension tests which wouldcontain data only for those materials whose complete processing history wasavailable.

ENTRY OF DATA TO UPDATE FILES

Our current practice has been to add data to the computer file in batchesof at least sixty test sets at one time. When a batch of reduced data is avail-able , the analysis program EVALRO is performed (see Reference 1). The output of

_ _ _ _ _ _ _ _ _

_ _ _ _ _ _ _ _ _ _

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N ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ —

~~~

______

_____________________________________________________________ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~

_ _ _ _ _ _ _ _ _ _ _ _ _

___ —

this program consists of two decks of punch cards. One deck contains the ana-lyzed data, each card of which contains a coded s~.~~ary of the data for one test.The second deck contains data to update the key set ntabars in the LOCATER file.

A file has been catalogued in the co~~uter , called R*FIXSANI( which is usedto update both the DATABANK file and the LOCATER file. Input to FIXBANK consistsof the two output decks of the EVALRO program. There is also one element in theFIXBAN K file which can be used at any time to obtain hard-copy printouts of bothdata files on the high-speed printer of the UNIVAC 9300 terminal. A FORTRANlisting of the FIXIANK file is given in Reference 2.

The FIXBAN K update program procedure is s~~mari zed below .

1. The EVALRO data card deck is read into the computer and the card imagesare written in the DATAB.ANK file.

2. The EVAL~~ key set nunber deck is read into the computer , the currentcontent of Section 1 of the LOCATER file erased , and the updated key set nunbersare written in the LOCATER file.

3. A count is made of the nLunbers of entries of new data for each material/alloy category in step 1 above. The count for each category is added to the cur-rent value read from Section 2 of the LOCATER file. Section 2 of the LOCATERfile is erased and the updated count values for each category are written in theLOCATER file.

4. Hard-copy printouts of the updated contents of both files are made onthe UNIVAC high-speed printer .

ACKNOWLEDGMENTS

I wish to acknowledge my colleagues Coh n Freese , Anna Hansen , and JamesMcLaughlin for the assistance and advice they gave me in software developmen tand for the education they gave me on the use and the limitations of the digitalcomputer.

I0

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Author

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