Fluid oscillation materials testing apparatus and methods

Details Fluid oscillation materials testing apparatus and methods Fluid oscillation materials testing apparatus and methods

1981-03-06

1983-05-03

Myracle, Jerry W.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73168, 73812, G01N 336

Patent

active

043816630

ABSTRACT:
Apparatus and methods for durability (fatigue) testing of various samples (materials, valves, components and other objects) involves use of a test fixture for clamping a sample to be tested in a closed fluid environment and providing fluid passages on opposite sides of the object to be tested through which a bellows-actuated fluid oscillator causes axial oscillating flow of fluid, causing the sample to undergo repeated bidirectional axial pressures producing flexing in the case of a membrane of elastic material or repeated closing and opening in the case of a valve, etc., in response to oscillation of the fluid in the passages. The device is particularly suited for "blister testing" of elastomers and for life testing of prosthetic heart valves and other valves.

REFERENCES:
patent: 3173372 (1965-03-01), Baldwin
patent: 3911725 (1975-10-01), Selivanov et al.

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