Non-destructive process for estimating the ageing of an article

Details Non-destructive process for estimating the ageing of an article Non-destructive process for estimating the ageing of an article

1997-12-30

1999-07-13

Williams, Hezron

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

G01N 2900

Patent

active

059229578

ABSTRACT:
A non-destructive process for estimating the ageing of an article made of a composite material is described comprising a preliminary phase in which at least one chart is prepared characterizing the change in the attenuation of ultrasonic waves in the composite material as a function of weight loss thereof, and a checking phase in which the attenuation of ultrasonic waves in the article made of the composite material is measured and the weight loss of the article is determined using the chart prepared in the preliminary phase, the weight loss being representative of the ageing of the article.

REFERENCES:
patent: 4050530 (1977-09-01), Storace
patent: 4612807 (1986-09-01), Wunderer
patent: 5092176 (1992-03-01), Buttram et al.
patent: 5691474 (1997-11-01), Gerz

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