Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 8th Sem 2182102 Material Selection And Failure Analysis Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VIII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2182102 Date:25/01/2021
Subject Name:Material selection and Failure Analysis
Time:02:00 PM TO 04:00 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1
(a) Explain the concept of resource base.
03
(b) Discuss the relationship between material processing and
04
selection of materials.
(c) Draw and explain the importance of stress strain curve in selection
07
of materials; also highlight the data obtained from the curve.
Q.2
(a) Discuss various factors affecting the cost of raw material.
03
(b) Define stiffness? Discuss the criteria for selection of materials for
04
stiffness.
(c) Explain various criteria for the selection of material used in tools.
07
Q.3
(a) Discuss briefly on material selection for gear applications.
03
(b) What are the various potential failure modes of ball bearing
04
component?
(c) Discuss in detail mechanism of ductile failure.
07
Q.4
(a) Differentiate between ductile and brittle fracture in metals.
03
(b) Describe the role of toughness in material selection.
04
(c) Explain the selection process of a material used for ship hull
07
application.
Q.5
(a) Draw a typical S-N curve for plain carbon steel.
03
(b) Discuss mechanism of component failure by galvanic corrosion.
04
(c) Discuss a case study on aircraft component failure due to
07
metallurgical factors/failure of metals.
Q.6
(a) Discuss the applicability of high strength to weight ratio materials
03
in aerospace applications.
(b) Explain in brief about thermal fatigue.
04
(c) Explain macro & micro fracture features of Fatigue failure.
07
Q.7
(a) Discuss in brief about corrosion fatigue.
03
(b) Explain in brief about the modes of fracture.
04
(c) Explain stress corrosion cracking in detail.
07
Q.8
(a) What is ductile to brittle transition temperature? How the crystal
03
structure of a metal affects this temperature?
1
(b) Explain the mechanism of hydrogen induced cracking in the
04
steels.
(c) What is the importance of failure analysis and its relationship with
07
material selection?
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This post was last modified on 04 March 2021