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How do you calculate fracture toughness from impact energy through impact test?

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Answer:

Impact test gives toughness value which is energy absorbed by material per unit volume..
From test like charpy test value of energy absorbed by the specimen can be calculated directly by getting the height of pendulum after impact....
whereas fracture toughness is totally different subject which comes into picture after formation of crack in the material. Methods of calculation of fracture toughness depends upon the type of material (brittle or ductile). Resistance curve is used to find the fracture toughness.

First answer by Kulbirpal84. Last edit by Kulbirpal84. Contributor trust: 0 [recommend contributor ]. Question popularity: 3 [recommend question].

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