Explore topic-wise MCQs in Mechanical Metallurgy Questions and Answers.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

In the case of plane strain, the relationship between the fracture toughness and crack extension force is given as _______ (where K is the fracture toughness, δ is the crack extension force, ν is the poison’s ratio, and E is the young’s modulus).

A. K=δE
B. K2=δE/(1-ν2)
C. K=(δE)/ν
D. K=δ/E
Answer» C. K=(δE)/ν
Discussion
2.

In the case of plane stress, the relationship between the fracture toughness and crack extension force is given as _______ (where K is the fracture toughness, δ is the crack extension force, and E is the young’s modulus).

A. K=δE
B. K2=δE
C. K=(δE)2
D. K=δ/E
Answer» C. K=(δE)2
Discussion
3.

The plane-strain value of critical stress intensity factor KIc is independent of the specimen thickness and describes the fracture toughness of the durable material. Here, in the KIc the I represents _____

A. mode of fracture
B. number of stress state
C. number of strain state
D. the magnitude of fracture toughness
Answer» B. number of stress state
Discussion
4.

The following diagram shows crack deformation mode. Which mode of fracture is shown?

A. Mode-I
B. Mode-II
C. Mode-III
D. Need more information
Answer» B. Mode-II
Discussion