What is the proof resilience per unit volume of a material known as________________?
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Answer: C. modulus of resilience
Explanation
Proof resilience refers to the maximum strain energy stored in a material up to its elastic limit. Dividing this total stored energy by the volume of the material yields the modulus of resilience. This specific volumetric property allows engineers to compare the energy storage capacity of different alloys. Resilience is the capacity of a material to absorb energy when deformed elastically and release it upon unloading. The area under the elastic region of a stress-strain curve represents the modulus of resilience. High resilience materials can withstand heavy shock loading without undergoing permanent plastic deformation.
Vehicle suspension springs require materials with a high modulus of resilience to absorb road shocks. Machine components subjected to cyclic impact loads are selected based on their resilience properties. Material science laboratories evaluate energy storage limits to prevent fatigue failure in service. Option A is a general term for energy absorption without specifying the volumetric or proof limits. Option B represents the total stored energy rather than the normalized energy per unit volume. Option D refers to toughness, which measures total energy absorption up to final fracture.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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