Which of the following is not a characteristic observed in material failure by fatigue fracture ?
Correct answer: B. Initiation of crack from below the surface does not occur
- A. Plastic deformation of material does not occur
- B. Initiation of crack from below the surface does not occur
- C. Initiation of crack occurs on the surface of the machine part
- D. Presence of both rough & smooth zone with conchoidal markings in smooth zone of the
Explanation
Fatigue cracks commonly start at the surface, but subsurface initiation can occur at inclusions or other internal defects. Thus, saying that subsurface crack initiation does not occur is not a valid general characteristic of fatigue failure.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Plant Design and Economics
803 free Plant Design and Economics MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Plant Design and Economics questions
Material of construction of the electrode used in the electric resistance welding is___________________?
Plastics as a material of construction suffer from the drawback of low_________________?
Young's modulus of a material is the measure of its ___________________?
The bolt is subjected to _______________ when the nut is tightened by putting the washer beneath it?
The joint for soldering is supported by binding wire made of ____________________?
Corona discharge is related to the operation of a/an_______________________?