Measuring and testing – Instrument mechanism or transmission – Rate of change
Patent
1988-06-03
1989-05-16
Noland, Tom
Measuring and testing
Instrument mechanism or transmission
Rate of change
436 2, G01N 3344
Patent
active
048298395
ABSTRACT:
A method and device are disclosed for the determination of the environmental stress crack resistance (ESCR) of polymer articles made from polymers such as acrylonitrile-butadiene-styrene copolymers, polycarbonate, polystyrene and blends thereof. The method and device involve the external application of stress to an unstressed test article which has been exposed to a stress cracking agent. The stress is induced by means of a weight located below the horizontal plane of the plastic article. The time between the application of stress and the cracking of the test article is measured to compute a characteristic ESCR parameter and thereby evaluate the environmental stress crack resistance of the article.
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Technical Note: "A New Accelerated Test for Studying the Susceptibility of Stainless Steels to Chloride Stress Corrosion Cracking"; Corrosion (USA); vol. 35, No. 9, pp. 429-431; Stare Henrikson et al.
Fisher James H.
Jacoby Philip
Amoco Corporation
Magidson William H.
Medhurst Ralph C.
Noland Tom
Tungol Maria Parrish
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