The fracture stress according to Orowan’s theory of brittle fractur – McqOptions

MCQOPTIONS

1.	The fracture stress according to Orowan’s theory of brittle fracture is __________ (where E is Yong’s modulus, ϒp is the plastic work required to extend the crack wall of the length 2a).a) (Eϒp/a)1/2b) (Eϒp/a)c) (Eϒp/2a)1/2d) (Eϒp/2
A.	(Eϒp/a)1/2
B.	(Eϒp/a)
C.	(Eϒp/2a)1/2
D.	(Eϒp/2a)
Answer» B. (Eϒp/a)

Discussion

No Comment Found

Related MCQs

If the two flows of different geometry have the same value of K, then the stress field around each of the flow will be identical.
The Dimension of the stress intensity factor K is __________
The stress intensity factor for a Sharpe elastic crack in the infinity wide plate is equal to ________a) K=σ√(πa)b) K=σ(πa)c) K=σ(πa)2d) K=σ√(π/
The stress intensity factor at local crack tip is proportional to __________
As the crack length increases, the required load value to extend the crack ______
According to the fracture theory of the material, the critical value of the crack extension force, which makes the crack propagate to the fracture is called the fracture toughness of the material.
The unit of crack extension force δc is ____________
The fracture stress according to Irwin’s modification is given as ________a) (Eδc/πa)1/2b) (Eδc/πa)c) (Eδc/2πa)1/2d) (Eδc/2π
The young’s modulus of the steel is 600 MPa, and the plastic stress required to extend the crack is 50*10-9, and the initial crack length is 2 microns. Find the fracture stress required to crack the material?
The fracture stress according to Orowan’s theory of brittle fracture is __________ (where E is Yong’s modulus, ϒp is the plastic work required to extend the crack wall of the length 2a).a) (Eϒp/a)1/2b) (Eϒp/a)c) (Eϒp/2a)1/2d) (Eϒp/2