Which instrument is designed to exert a tensile, compressive, or transverse stress on a specimen under test?

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Multiple Choice

Which instrument is designed to exert a tensile, compressive, or transverse stress on a specimen under test?

Applying controlled mechanical loads in tension, compression, or bending requires a versatile testing instrument. A universal testing machine is designed for exactly that: it grips a specimen and applies an axial load to produce tension or compression, and with appropriate fixtures it can also apply a bending (transverse) load to generate flexural stress. It records the resulting force and deformation at a controlled rate, enabling determination of properties like tensile strength, yield strength, modulus, or flexural strength. The other devices have different roles: a slump cone measures workability of fresh concrete, a vibrator helps consolidate concrete by removing air pockets, and a laboratory oven provides controlled heating for drying or curing, not for applying mechanical stresses to test specimens.

Applying controlled mechanical loads in tension, compression, or bending requires a versatile testing instrument. A universal testing machine is designed for exactly that: it grips a specimen and applies an axial load to produce tension or compression, and with appropriate fixtures it can also apply a bending (transverse) load to generate flexural stress. It records the resulting force and deformation at a controlled rate, enabling determination of properties like tensile strength, yield strength, modulus, or flexural strength. The other devices have different roles: a slump cone measures workability of fresh concrete, a vibrator helps consolidate concrete by removing air pockets, and a laboratory oven provides controlled heating for drying or curing, not for applying mechanical stresses to test specimens.

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