A solid can be irreversibly deformed. The stamping of sheets of steel into 'fins' of motor cars is a case of :
A
Vaccum deformation
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B
Plastic deformation
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C
Elastic deformation
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D
Flexible shaping
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Solution
The correct option is B Plastic deformation Plastic Deformation is the permanent distortion which occurs when the material is subjected to stress, tensile or compression that exceeds its yield strength.