If in an old test, energy absorbed (obtained on the scale) is 34 J and cross-section area of the notch is 10×8 mm square. What is the impact strength of the material?(a) 34 J per mm square(b) 4.25 J per mm square(c) 0.425 J per mm square(d) 80 J per mm squareI have been asked this question during an online exam.This intriguing question originated from Impact Test topic in portion Testing Aircraft Materials of Aerospace Materials & Processes

If in an old test, energy absorbed (obtained on the scale) is 34 J and

1.	If in an old test, energy absorbed (obtained on the scale) is 34 J and cross-section area of the notch is 10×8 mm square. What is the impact strength of the material?(a) 34 J per mm square(b) 4.25 J per mm square(c) 0.425 J per mm square(d) 80 J per mm squareI have been asked this question during an online exam.This intriguing question originated from Impact Test topic in portion Testing Aircraft Materials of Aerospace Materials & Processes
Answer» Correct ANSWER is (c) 0.425 J per mm square For explanation I would say: Formula for impact strength = \(\frac{Energy \,absorbed}{Cross-section \,AREA \,of \,NOTCH}\) = \(\frac{34}{10×8}\) = 0.425 J per mm square.

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