Fixtureless environmental stress screening apparatus

Details Fixtureless environmental stress screening apparatus Fixtureless environmental stress screening apparatus

1989-11-02

1991-08-13

Cuchlinski, Jr., William A.

Thermal measuring and testing

Thermal testing of a nonthermal quantity

Of susceptibility to thermally induced deteriouration, flaw,...

374 5, 374141, 374142, 738656, 73662, 73571, G01N 2572, G01N 2500, G01N 2900, G01N 3300

Patent

active

050392280

ABSTRACT:
A fixtureless environmental screening device is provided for the testing of mechanical, electromechanical and electrical devices. The apparatus uses a relatively incompressible fluid having a high heat capacity and a high heat of vaporization to transfer heat and vibration to a device to be tested. The heat transfer characteristics of the fluid permits a device tested to undergo rapid temperature change while being simultaneously subjected to vibrational cycling. By utilizing a fluid as a vibration transmission medium expensive fixtures are avoided so that devices of a wide variety of shapes and sizes may be readily tested. The dielectric properties of the working fluid permits energization of electrical devices during the course of vibration and temperature cycling.

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Iowa Air Crash Laid to Metallurgical Flaw by Paul Houston, Oct. 29, 1989, Los Angeles Times, Los Angeles, CA.

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