Related Questions

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.
Which of the following fracture mechanisms in which the crack propagates more rapidly?
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?
Consider the following statements regarding crack : 1. Crack is more likely to occur in the regions of discontinuity such as oil holes. 2. Crack is more likely to occur in the regions of irregularities in machining operations such as stamp mark. 3. Crack is more likely to occur in the internal cracks due to defects in materials like blow holes. Which of the above statements are correct ? 
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).
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).
Fracture stress for a brittle material having a crack lenght of 1μm is 200 MPa. Fracture stress for the same material having a crack lenght of 4 μm is
There are 2 candidates A and B. Probability that A will crack the exam is 3/4 and that B will crack the exam is 2/3. What will be the probability that only one will crack the exam?
The crack propagation rate with stress is given as ______ Where; -> da/dN is crack growth with each cycle -> C is constant -> σm is mean stress -> σa is alternating stress -> a is the crack length -> m and n are constant
According to Irwin’s correction of plasticity at the crack tip, the sufficient crack length is given as the actual crack length plus the radius of the plastic zone. The radius of the plastic zone (rp) in case of plane stress is given as ________