What property describes a material's ability to revert to its original dimensions once external loads are removed____________________?
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Answer: B. elasticity
Explanation
Elasticity is the physical property that dictates whether a deformed solid material will return to its original geometry once stress is removed. During elastic deformation, interatomic bonds are stretched without permanent displacement of atoms within the crystal lattice structure. When the external load is released, the stored potential energy releases, allowing the material to revert completely to its initial dimensions. Hooke law describes the linear relationship between stress and strain within the elastic region for many common engineering materials. The elastic limit marks the maximum stress a material can endure before undergoing permanent plastic deformation. Young modulus quantifies the stiffness of an elastic material by measuring the slope of its stress-strain curve in this region.
Plasticity refers to the ability of a material to undergo permanent, non-reversible deformation without fracturing under applied loads. Ductility describes a material ability to deform plastically and stretch into wires under tensile stress before final rupture. Resilience specifically measures the capacity of a material to absorb energy when deformed elastically and release it upon unloading.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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