Method of determining load in anisotropic non-crystalline materi

Details Method of determining load in anisotropic non-crystalline materi Method of determining load in anisotropic non-crystalline materi

1993-02-22

1994-08-16

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73570, 73596, 73645, G01N 2920

Patent

active

053376102

ABSTRACT:
An ultrasonic wave is applied to an anisotropic sample material in an initial direction and the intensity of the ultrasonic wave is measured on an opposite surface of the sample material by two adjacent receiving points located in an array of receiving points. A ratio is determined between the measured intensities of two adjacent receiving points, the ratio being indicative of an angle of flux deviation from the initial direction caused by an unknown applied load. This determined ratio is then compared to a plurality of ratios of a similarly tested, similar anisotropic reference material under a plurality of respective, known load conditions, whereby the load applied to the particular anisotropic sample material is determined. A related method is disclosed for determining the fiber orientation from known loads and a determined flux shift.

REFERENCES:
patent: 4499770 (1985-02-01), Kriz
patent: 4870866 (1989-10-01), Slack

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