Nondestructive measurement of fractions of phases in mixtures an

Details Nondestructive measurement of fractions of phases in mixtures an Nondestructive measurement of fractions of phases in mixtures an

1988-11-22

1990-01-30

Lall, Parshotam S.

Boots, shoes, and leggings

73577, 73599, 364507, G06F 1546, G06F 1520

Patent

active

048977969

ABSTRACT:
The weight fractions of the phases of a composite material working specimen are determined nondestructively by first performing a sufficient number of nondestructive and destructive calibration measurements on the properties of calibration specimens. The information learned from the calibration specimens is used in combination with nondestructive measurements of the working specimen to determine the fractions of the phases therein, without damaging the working specimen. In one version of this approach, ultrasonic measurements are used to determine fractions of the fiber and matrix in a nonmetallic composite material.

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