ChE 361ChE 361

Engineering MaterialsEngineering Materials

Syllabus and Course ScheduleSyllabus and Course Schedule

Complete version posted on CanvasComplete version posted on Canvas

Instructor:Instructor: Dr. M. Ginger Dr. M. Ginger ScarbroughScarbrough

Office:Office: JH 158JH 158Phone:Phone: 646-5579646-5579

Office Hours:Office Hours: MWF 9:00-10:15 MWF 9:00-10:15 AMAM Or via Canvas Or via Canvas Or by appointmentOr by appointment

Email:Email: gscarbro@nmsu.edugscarbro@nmsu.edu

Use Canvas for fastest Use Canvas for fastest responseresponse

I check Canvas several times I check Canvas several times per day.per day.

I check my NMSU email a few times I check my NMSU email a few times

per week.per week.

Required TextbookRequired Textbook

Materials Science Materials Science and Engineering: and Engineering: An Introduction, An Introduction, 8th 8th Ed.Ed.

byby Callister and Callister and RethwischRethwisch

Required TextbookRequired TextbookBN Bookstore: BN Bookstore: $99 Rent used$99 Rent used$148 Rent new$148 Rent new$185 Buy used$185 Buy used$246 Buy new$246 Buy new$60 Buy eText $60 Buy eText

Wiley.com Wiley.com (see Canvas link)(see Canvas link)::$151 New Binder-ready $151 New Binder-ready $60 eBook$60 eBook$232 Buy new$232 Buy new

Required TextbookRequired TextbookUse other editions at your own Use other editions at your own

risk.risk.

You are responsible for making You are responsible for making adjustments for changes in adjustments for changes in section numbering and section numbering and pages.pages.

Required: i>clicker2Required: i>clicker2

Required: i>clicker2Required: i>clicker2or i>clickeror i>clicker

Required: i>clicker2Required: i>clicker2or i>clickeror i>clickeror i>clicker GO appor i>clicker GO app

Use i>clicker GO at your own

risk!

Slow internet connections

may cause you to lose points

during clicker quizzes.

i>clicker2i>clicker2 Rent used—$26.00 Rent used—$26.00 Rent new—$33.80 Rent new—$33.80 Buy used—$39.00Buy used—$39.00 Buy new—$52.00Buy new—$52.00 ii>clicker GO—$10/180 days >clicker GO—$10/180 days use at your own risk* use at your own risk*

*I cannot solve i>clicker GO *I cannot solve i>clicker GO login/connection problemslogin/connection problems

One Blue Scantron from One Blue Scantron from ASNMSU (options A-J)ASNMSU (options A-J)

What else do you need?What else do you need?

Rarely

X

Why Not?Why Not?

Calculations don’t Always = understanding

What else do you need?What else do you need?

Curiosity

Course PoliciesCourse Policies

GradingGrading 5-10 Clicker questions/day (scaled) = 25%5-10 Clicker questions/day (scaled) = 25% 2 Exams (100 points each)2 Exams (100 points each) = 40% = 40% 1 Comprehensive Final1 Comprehensive Final = 35% = 35%

Above point system subject to minor changesAbove point system subject to minor changes

Clicker QuestionsClicker Questions

Beginning of class:Beginning of class:2-3 questions based on reading assignment2-3 questions based on reading assignment

During ClassDuring Class3-7 questions based on lecture 3-7 questions based on lecture

or on or on ““Materials MomentsMaterials Moments””

Extra Credit OpportunityExtra Credit Opportunity

The Materials MomentThe Materials MomentMore information coming soonMore information coming soon

Grading ScaleGrading Scale

90-100% 90-100% = A= A80-90%80-90% = B= B70-80% 70-80% = C= C60-70% 60-70% = D= DBelow 60% Below 60% = F= F

Final Score = the higher of:Final Score = the higher of:• • Average of all scores Average of all scores • • Final Exam ScoreFinal Exam Score

Important datesImportant dates

Last Day to withdraw with a Last Day to withdraw with a ““WW ””: : Tuesday, 11 MarchTuesday, 11 March

Final Exam: Final Exam: Monday, 5 MayMonday, 5 May

10:30-12:3010:30-12:30JH 283JH 283

Borderline gradesBorderline grades

Extra credit and class participation Extra credit and class participation

move you up to the next letter grade.move you up to the next letter grade.

AttendanceAttendance Attendance is encouragedAttendance is encouraged

Make-up examsMake-up exams• Written justification requiredWritten justification required• Must be taken in advance of assignmentMust be taken in advance of assignment

Clicker PoliciesClicker Policies You may consult text or neighbors (unless You may consult text or neighbors (unless

instructed otherwise)instructed otherwise)

You must be present in class to voteYou must be present in class to vote

Lowest two clicker scores will be dropped Lowest two clicker scores will be dropped to allow for forgotten/malfunctioning to allow for forgotten/malfunctioning clickers.clickers.

No make-ups for clickers except for No make-ups for clickers except for excused absences. (See syllabus.)excused absences. (See syllabus.)

HonestyHonesty

Honesty is the only policy.Honesty is the only policy.

Classroom CourtesyClassroom Courtesy

Please be courteous w/ electronicsPlease be courteous w/ electronics

Participate in class discussionsParticipate in class discussions

Ask QuestionsAsk Questions

PowerPoint SlidesPowerPoint Slides

Posted on Canvas the morning before Posted on Canvas the morning before classclass

Keys to SuccessKeys to Success

How many hours should you spendHow many hours should you spendoutside of classoutside of class

to earn an to earn an A or B?A or B?

Keys to SuccessKeys to SuccessBased on research on learningBased on research on learning

1.1. Take notes on reading assignment Take notes on reading assignment before coming to class (about 1 hour)before coming to class (about 1 hour)

2.2. Take notes in class on anything you Take notes in class on anything you don’t remember from textbook notesdon’t remember from textbook notes

3.3. Spend 20 minutes MWF afternoon Spend 20 minutes MWF afternoon combining your two sets of notes (combining your two sets of notes (1 & 21 & 2))

4.4. Over weekend, spend one hour Over weekend, spend one hour reviewing your notes.reviewing your notes.

Keys to Success, contKeys to Success, cont’’dd

If you follow my advice,If you follow my advice,

You spend 2 hrs 20 minutes per week.You spend 2 hrs 20 minutes per week.No need to cram for exams.No need to cram for exams.

The day before an exam, spend about 2 The day before an exam, spend about 2 hours studying.hours studying.

The Course ScheduleThe Course Schedule

explainedexplained

Why am I here?Why am I here?

A.A. Because my major requires it.Because my major requires it.

B.B. Because I live in a Material world.Because I live in a Material world.

C.C. Because it is the most important course Because it is the most important course I will ever take.I will ever take.

Why am I here?Why am I here?

A. Because my major requires it.A. Because my major requires it.

B. Because I live in a Material world.B. Because I live in a Material world.

C. Because it is the most important course C. Because it is the most important course I will ever take.I will ever take.

Reading Assignment for TodayReading Assignment for TodayCallister and RethwischCallister and Rethwisch

Chapter 1Chapter 1–Motivation–Motivation

– –Basics of MaterialsBasics of Materials

DefinitionsDefinitions

Materials ScienceMaterials Science Materials ScientistMaterials Scientist

Materials EngineeringMaterials EngineeringMaterials EngineerMaterials Engineer

InterrelationshipsInterrelationships

Performance

Processing

Structure

Composition

Properties

Primary Classes of MaterialsPrimary Classes of MaterialsCompositionComposition

MetalsMetals

CeramicsCeramics

PolymersPolymers

CompositesComposites

Metals: High-carbon SteelMetals: High-carbon Steel

High-Carbon Steel High-Carbon Steel Jigsaw BladeJigsaw Blade

Metals: TitaniumMetals: Titanium

““ObtaniumObtanium”” bicycle bicycle shocks vs. steelshocks vs. steel

• • Weight reductionWeight reduction

• • Longer lifeLonger life

• • Closer true-spring rateCloser true-spring rate

Ceramics: Tempered glassCeramics: Tempered glass

Tempered glass sink Tempered glass sink

Ceramics: BorosilicatesCeramics: Borosilicates

Ceramics: RefractoriesCeramics: Refractories

Silica refractory bricks:Silica refractory bricks:

Industrial furnaceIndustrial furnace

Polymers: Vulcanized RubberPolymers: Vulcanized Rubber

Ice hockey requires a hard Ice hockey requires a hard disk of vulcanized rubber.disk of vulcanized rubber.

Polymers: Thermoset PlasticsPolymers: Thermoset Plastics

Chemiplastica Chemiplastica melamine melamine

thermoset thermoset plasticsplastics resistant to resistant to heat, chemicals, heat, chemicals, moisture, electricity moisture, electricity and scratching.and scratching.

Polymers: PlasticizersPolymers: Plasticizers

Our plasticizers impart Our plasticizers impart impact resistance, impact resistance, improve low-temperature improve low-temperature flexibility of fused films flexibility of fused films and provide thermal and and provide thermal and light stability.light stability.

CompositesComposites

Concrete Concrete

reinforced with reinforced with rebarrebar

CompositesComposites

Fiberglass kayakFiberglass kayak

Composites: Ceramic matrixComposites: Ceramic matrix

Ceramic disc brakes:Ceramic disc brakes:

Ceramic rods in a Ceramic rods in a ceramic matrixceramic matrix

InterrelationshipsInterrelationships

Performance

Processing

Structure

Composition

Properties

ProcessingProcessing

Processing determines Processing determines propertiesproperties

Example:Example:

Raw timberRaw timber

vs.vs.

PaperPaper

ProcessingProcessing Clay becomes Fired clay pottery

InterrelationshipsInterrelationships

Performance

Processing

Structure

Composition

Properties

SEM: Clay vs. Fired ClaySEM: Clay vs. Fired Clay

1 2

3 Discrete clay &

quartz particles melt

& fuse into vitreous

material.

StructuresStructuresExample: BCC crystal: MolybdenumExample: BCC crystal: Molybdenum

Subatomic Atomic

Microscopic Macroscopic

InterrelationshipsInterrelationships

Performance

Processing

Structure

Composition

Properties

Material PropertiesMaterial Properties

PropertiesProperties

Brittleness

PropertiesPropertiesResponse to imposed stimulus.Response to imposed stimulus.[If I drop it (stimulus), will it break (response)?][If I drop it (stimulus), will it break (response)?]

mechanicalmechanical

electricalelectrical

thermalthermal

deteriorative deteriorative

magneticmagnetic

opticaloptical

Mechanical Property:Mechanical Property:Elasticity–recoverable Elasticity–recoverable

deformationdeformation

Paper clip Paper clip under normal useunder normal use

Mechanical Property:Mechanical Property:Plasticity—permanent Plasticity—permanent

deformationdeformation

Paper clip Paper clip

under abuseunder abuse

Plasticity by designPlasticity by design

Radial profile Radial profile

segmentssegments

Plasticity by accidentPlasticity by accident

Street lamp Street lamp

damaged during damaged during

storm storm (Bridgeport, CN)(Bridgeport, CN)

BrittlenessBrittleness

Pressure vessel Pressure vessel fails during fails during hydraulic testhydraulic test

CorrosivenessCorrosiveness

Corroded ship at Corroded ship at GuantanamoGuantanamo

InterrelationshipsInterrelationships

Performance

Processing

Structure

Composition

Properties

The Humble HangerThe Humble Hanger

Humble Hanger: Humble Hanger: What determines performance?What determines performance?

Performance

Processing

Structure

Composition

Properties

The Humble HangerThe Humble Hanger

Coat hanger in 1880s schoolhouse

The Humble HangerThe Humble Hanger

Hanger Patents

The Humble HangerThe Humble Hanger

Hanger Patents

Reading Assignment:Reading Assignment:Callister and RethwischCallister and Rethwisch

Chapter 2Chapter 2

Atomic Structure and Bonding:Atomic Structure and Bonding:

2.1, 2.2, 2.4, 2.6–2.82.1, 2.2, 2.4, 2.6–2.8

DefinitionsDefinitions Materials Science:Materials Science:

Study of relationships between Study of relationships between structures*structures* and and properties*properties* of materials. of materials.

*Defined on next slides*Defined on next slides

Materials Scientists:Materials Scientists:Develop new materials, perfect existing ones.Develop new materials, perfect existing ones.

DefinitionsDefinitions

Materials Engineering: Materials Engineering: Use knowledge of Materials Science to design:Use knowledge of Materials Science to design:

products that perform without failure.products that perform without failure.

processing techniques for materials.processing techniques for materials.

Primary Classes of MaterialsPrimary Classes of Materials

MetalsMetals——Al, Fe, Ni, Cr, Ti, etcAl, Fe, Ni, Cr, Ti, etc..

CeramicsCeramics——Metallic-nonmetallic compoundsMetallic-nonmetallic compounds (Glass, Concrete, porcelain, etc.)(Glass, Concrete, porcelain, etc.)

PolymersPolymers——Plastic, rubber, nylon, etc.Plastic, rubber, nylon, etc.