CHARACTERISATION AND PROCESSING OF NATURAL PARTICLE

REINFORCED COMPOSITESBATCH NO:01

GUIDE: DR. P. PRABHAKARA RAO TEAM MEMBERS:

O. ARAVIND (11016T0367)

V. RITWIK (11016T0384)

B. NIKHIL RAJU (11016T0402)

P. PRAVEEN REDDY (11016T0368)

KAKATIYA INSTITUTE OF TECHNOLOGY AND SCIENCE, WARANGAL

MECHANICAL DEPT.

91

ABSTRACT In this project, it is proposed to fabricate the polymer composite specimens . The specimens

are prepared using hand lay up method. The constituents which are resin and reinforcement

particles were procured from retail outlets. The standard dimensions for specimen

preparation were taken from the various journals. By using the dimensions the moulds for

fabrication of specimens are prepared.

The effects of variation of particle weight fractions on the mechanical properties of

composite will be evaluated by conducting various tests which are Tensile, Flexural bending

and Compression test.

ADVANCEMENT IN THE PROJECT

ADVANCEMENT REMARKSLITERATURE REVIEW ✓

MATERIAL ACQUISITION ✓

MOULDS PREPARATION ✓

LAMINATES PREPARATION ✓

INSPECTION ✓

CORRECTION ✓

MATERIALS USED

Resin Epoxy (SR-350)

Hardener Liquid amino polyamide (SH-150)

Particles Sago (STARCH PARTICLES)

SPECIMEN PREPARATION

Preparation of materials

Moulds preparation

Hand Layup Technique

Curing

Inspection and Correction

Specimen compositionsMATERIAL EPOXY (SR 350) HARDENER(SH 150) SAGO

% by Weight 75 25 0

MASS (GRAMS) 262 87 0

MATERIAL EPOXY (SR 350) HARDENER(SH 150) SAGO

% by Weight 67.5 22.5 10

MASS (GRAMS) 236 79 35

SPECIMEN 1

SPECIMEN 2

SPECIMEN 3

MATERIAL EPOXY (SR 350) HARDENER(SH 150) SAGO

% by Weight 60 20 20

MASS (GRAMS) 210 70 70

MATERIAL EPOXY (SR 350) HARDENER(SH 150) SAGO

% by Weight 52.5 17.5 30

MASS (GRAMS) 183 61 105

MATERIAL EPOXY (SR 350) HARDENER(SH 150) SAGO

% by Weight 45 15 40

MASS (GRAMS) 157 52 140

MATERIAL EPOXY (SR 350) HARDENER(SH 150) SAGO

% by Weight 37.5 12.5 50

MASS (GRAMS) 131 44 175

SPECIMEN 5

SPECIMEN 4

SPECIMEN 6

TESTS TO BE CONDUCTED :SERIAL NO

TYPE OF TEST MACHINE USED TO PERFROM THE TEST

PURPOSE OF THE TEST

01 TENSILE TEST UNIVERSAL TESTING MACHINE-TENSOMETER

• Strength of material• Tensile modulus

02 COMPRESSION TEST UNIVERSAL COMPRESSION TESTING MACHINE

• To distinguish between different grades of a material

03 WATER ABSORPTION TEST

• To define the water absorption capacity

04 3- POINT BEND TEST UTM-TENSOMETER • Flexural Strength

05 SCANNING ELECTRON MICROSCOPY ANALYSIS

SCANNING ELECTRON MICROSCOPE

• To evaluate particle dispersion

SPECIMEN DIMENSIONS• Tensile test specimen – ASTM D 638 (TYPE 1)

DIMENSIONS TYPE-1 (t<=7mm)

TYPE-2(t<=7mm)

TYPE-3(14>t>7mm)

W-width of narrow section

13 6 19

L-length of narrow section

57 57 57

WO-width overall

19 19 29

LO-length overall

165 183 246

G-gauge length

50 50 50

D-distance between grips

115 135 115

R-radius of fillet

76 76 76

Source: LUCID Laboratories Pvt Ltd. Hyderabad

• Compression test specimen Standard dimensions- ASTM D 695 (10x10x4mm)

• Water absorption test Standard dimensions- ASTM C 272 (3x 3”)

• 3-Point Bend test Standard dimensions- ASTM D 790 (80x25x4mm)

Source: http://www.intertek.com/polymers/composites/test-methods/

INSPECTION• Breaking of the Laminates while cutting

them using Semi automated band saw.

• High brittleness of the laminates.

• The laminates acquired high brittleness mainly due to large particles size, proportion of hardener used is more which lead to uneven distribution.

• The fabricated Laminates have a very high compression strength, hardness and poor tensile strength.

CORRECTIONS TO BE MADE:• To increase tensile strength of the

composites:

- Sago Particles are finely powdered into nanoparticles.

- Hardener will be mixed in proportion of 10-15%

• Jig-Saw will be used to cut the Laminates as verticle load was applied while using Semi Automated band saw which lead to breakage of the Laminates.

FURTHER ADVANCMENT

• Laminates Preparation• Specimen Fabrication• Tension test• Compression test • 3 point Bend test• Water Absorption test• SEM Photographs

REFERENCES• Experimental Investigation on Mechanical Properties of Coal Ash

Reinforced Glass Fibre Polymer Matrix Composites K. Naresh Kumar1, M. Prasanth kumar2, V. Krishna3, D. Srinivasa Rao4

• Study on Mechanical Properties of Epoxy Polymer Reinforced with NanoSiC particles

Amal Nassar, Eman Nassar• Physical and mechanical properties of sago starch – alginate films

incorporated with calcium chloride *Fazilah, A., Maizura, M., Abd Karim, A., Bhupinder, K., Rajeev Bhat,

Uthumporn, U. and Chew, S. H.

THANK YOU