MEL203

MATERIALS TESTING LAB

failure concepts

Mapping of course outcomes with program outcomes

Assessment Pattern Mark distribution

Continuous Internal Evaluation Pattern:

Attendance                                                                                              :          15 marks

Continuous Assessment :               30 marks Internal Test (Immediately before the second series test)  :                        30mark

End Semester Examination Pattern:

The following guidelines should be followed regarding award of marks

• Preliminary work : 15 Marks
• Implementing the work/Conducting the experiment : 10 Marks
• Performance, result and inference (usage of equipments and troubleshooting) : 25 Marks
• Viva voce : 20 marks
• Record : 5 Marks

General instructions:

Practical examination to be conducted immediately after the second series test covering entire syllabus given below. Evaluation is a serious process that is to be conducted under the equal responsibility of both the internal and external examiners. The number of candidates evaluated per day should not exceed 20. Students shall be allowed for the University examination only on submitting the duly certified record. The external examiner shall endorse the record.

A minimum of 10 experiments are to be performed.

SYLLABUS

LIST OF EXPERIMENTS

1. To conduct tension test on ductile material (mild steel/ tor-steel/ high strength steel) using Universal tension testing machine and Extensometer.
2. To conduct compression test on ductile material (mild steel/ tor-steel/ high strength steel) using Universal tension testing machine and Extensometer.
3. To conduct tension test on Brittle material (cast iron) using Universal tension testing machine and Extensometer.
4. To conduct shear test on mild steel
5. To conduct microstructure features of mild steel/copper/ brass/aluminium using optical microscope, double disc polishing machine, emery papers and etchent.
6. To conduct fractography study of ductile or brittle material using optical
7. To conduct Hardness test of a given (Brinell, Vickers and Rockwell)
8. To determine torsional rigidity of mild steel/copper/brass rod
9. To determine flexural rigidity of mild steel/ copper/brass material using universal testing
10. To determine fracture toughness of the given material using Universal tension testing
11. To study the procedure for plotting S-N curve using Fatigue testing
12. To conduct a Toughness test of the given material using Izod and Charpy
13. To determine spring stiffness of close coiled/open coiled/series/parallel
14. To conduct bending test on wooden
15. To conduct stress measurements using Photo elastic
16. To conduct strain measurements using strain
17. To determine moment of inertia of rotating
18. To conduct an experiment to Verify Clerk Maxwell’s law of reciprocal deflection and determine young’s Modulus of steel.
19. To determine the surface roughness of a polished specimen using surfaceprofilometer 
    

    Reference Books

    1. G E Mechanical Metallurgy, McGraw Hill,2013
    2. Dally J W, Railey W P, Experimental Stress analysis , McGarw Hill,1991
    3. Baldev Raj, Jayakumar T, Thavasimuthu , Practical Non destructive testing, Narosa Book Distributors,2015