Assembly for evaluating gasket service life and method for perfo

Measuring and testing – With fluid pressure – Dimension – shape – or size

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Details

73 498, 73 407, 73807, 73866, 738656, 374 47, G01M 304, G01N 312

Patent

active

053754530

ABSTRACT:
A method and apparatus for approximating the life of a gasket used in a predetermined environment is provided which allows for the long-term exposure to the environment to be simulated over a shortened period of time. The method and apparatus utilize the steps of placing a gasket sample in a test assembly, clamping the gasket sample within the test assembly at a predetermined clamping pressure whereby a chamber is formed within the interior of the gasket sample, filling the chamber with a gas at a predetermined pressure from a gas fill system, changing the temperature of the gasket sample over a predetermined number of temperature cycles, and measuring the amount of the gas which leaks from the chamber. The apparatus may also include a pressure control system for changing the pressure within the chamber over a predetermined number of pressure cycles or in response to predetermined temperature conditions.

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U.S. Patent Application 07/668,838, "A Method For Determining The Amount Of Deformation Induced In A Material By A Compressive Force".
Brochure entitled "Leak Detector RXS 200", Balzers.
ASTM Designation: F36-88, "Standard Test Method For Compressibility And Recovery Of Gasket Materials".
ASTM Designation: F37-89, "Standard Test Methods For Sealability Of Gasket Materials".
ASTM Designation: F38-88, "Standard Test Methods For Creep Relaxation Of A Gasket Material".
ASTM Designation: F152-87, "Standard Test Methods For Tension Testing Of Nonmetallic Gasket Materials".
ASTM Designation: F586-79, "Standard Test Method For Leak Rates Versus y Stresses and m Factors For Gaskets".

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