1. Strength corresponding to cohesive forces between atoms. 2. Hypothetically, the stress causing tensile fracture without plastic deformation.

Related Terms

PLASTIC DEFORMATION

Permanent change in shape or size of a solid body without fracture resulting from the application of sustained stress beyond the elastic limit.

IMPACT ENERGY

The energy necessary to fracture a material. Also known as impact strength.

IMPACT BAR

Specimen used to test the relative susceptibility of a plastic material to fracture by shock.

SCUFFING

Abnormal engine wear due to localized welding and fracture. It can be prevented through the use of anti-wear, extreme-pressure and friction modifier additives.

CRACK LINE

Any fracture (in ice) which has not parted

FRACTURE

A break or rupture through very close pack ice, compact pack ice, consolidated pack ice, fast ice, o

BRITTLE

A metal is brittle when it permits little or no plastic deformation prior to fracture.

BREAKING PIN DEVICE

A device designed to relieve pressure resulting from inlet static pressure by the fracture of a loaded part of a pin.

BREAKING STRESS

The stress required to fracture a material whether by compression, tension, or shear.

BRITTLE TEMPERATURE

The temperature point below which a material, especially metal, is brittle; that is, the critical normal stress for fracture is reached before the critical shear stress for plastic deformation.

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