Download GTU BE/B.Tech 2019 Summer 8th Sem New 2182102 Material Selection And Failure Analysis Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 8th Sem New 2182102 Material Selection And Failure Analysis Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII(NEW) EXAMINATION ? SUMMER 2019
Subject Code:2182102 Date:15/05/2019

Subject Name:Material selection and Failure Analysis

Time:10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Discuss common mode of fracture with its surface characteristics. 03
(b) Discuss factor affecting on cost of basic materials. 04
(c) Explain the criteria for selection of engineering materials. 07

Q.2 (a) Discuss briefly on Value added cost with suitable example. 03
(b) Define stiffness? Discuss the criteria for selection of materials for stiffness. 04
(c) Explain procedure for failure investigation. 07
OR
(c) Explain the role of material engineer for selection of materials in Design
synthesis.
07
Q.3 (a) Explain Creep mechanism. List out factor affecting creep. 03
(b) Explain relationship between material selection and material processing 04
(c) Which are different mechanical properties used for selection of material in
engineering use. Explain Strength in detail.
07
OR
Q.3 (a) Discuss briefly on Material selection for wear resistance. 03
(b) Where materials with high strength-to-weight ratio are required? Discuss
selection criteria and list the materials.
04
(c) Explain macro & micro fracture features of Fatigue failure. 07
Q.4 (a) Give macro examination of ductile failure. 03
(b) Define Fatigue. Explain fatigue failure mechanism. 04
(c) Discuss the case study of failure of automobile component. 07
OR
Q.4 (a) Mention and explain the most prominent combination of materials and
environments which can lead to stress corrosion cracking.
03
(b) List the properties required for bearings. Discuss the bearing materials. 04
(c) Discuss in detail mechanism of ductile failure. 07
Q.5 (a) Discuss micro and macro features of fatigue failure. 03
(b) Discuss mechanism of component failure by crevice corrosion. 04
(c) Write basic characteristics of brittle failure and explain in brief. 07
OR
Q.5 (a) Discuss in brief elevated temperature fatigue. 03
(b) Discuss mechanism of component failure by SCC. 04
(c) Define hydrogen embrittlement of steel. Explain the mechanism of
hydrogen induced cracking in the steels
07
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