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Consider the following statements for ductile fracture: 1. The material undergoes substantial plastic deformation with high energy absorption before fracture. 2. Presence of cracks on the surface of material initiates this type of failure. 3. Fracture occurs due to necking. Which of the above statements is/are correct? 
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.
At higher temperature, if higher frequency of stress cycle is applied on the material, fracture will be ___________ and at lower frequency of stress, the fracture will be ___________
Papier collé means the same thing as collage.
A tensile test is performed on a round bar. After fracture, it has been found that the diameter remains approximately same at fracture. The material under test was
Brittle fracture needs more energy than the ductile fracture.
Cup and cone type fracture is a ____________ fracture.
How does fracture surface appear in brittle fracture?
A tensile specimen of 6 mm diameter and gauge length 25 mm reached a maximum load of 45 kN and fractured at 35 kN. The maximum diameter at fracture is 5mm. Determine the true stress at the fracture point.
The brittle fracture is considered much more severe than ductile fracture.