1969-02-01

Nondestructive Testing Of Brake Lining 690445

NON DESTRUCTIVE TESTING OF BRAKE LININGEvery piece of brake lining must meet standards which relate production lining to lining tested on the vehicle for approval. To accomplish this purpose limits have been set on Cure, Strength, Hardness, Specific Gravity and Appearance, and these characteristics must be measured on a production basis.New techniques developed to measure these characteristics rapidly and non-destructively are; Electrical Conductivity for Cure, Loaded Rollers for Strength and Gamma Radiation Gauges for Specific Gravity. These techniques, plus Gogan hardness and visual inspection, have been coupled with systematic recording of measurements on experimental lining.

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