Apparatus for use in determining a thermal characteristic of a s

Details Apparatus for use in determining a thermal characteristic of a s Apparatus for use in determining a thermal characteristic of a s

1988-02-25

1989-09-12

Cuchlinski, Jr., William A.

Thermal measuring and testing

Thermal testing of a nonthermal quantity

Expansion or contraction characteristics

374 57, G01N 2516

Patent

active

048654612

ABSTRACT:
An apparatus for use in determining a thermal characteristic of a specimen includes first and second chucks for engaging two regions of the specimen, a first chuck mounting mechanism for supporting the first chuck in relatively fixed orientation, and a second chuck mounting mechanism. The second chuck mounting mechanism supports the second chuck in relatively movable orientation relative to the first chuck to permit variations in the spacing between the first and second chucks occasioned by thermal variations in the specimen. A base supports the first and second chuck mounting mechanisms. A laser is provided for heating a third region of the specimen lying between the two regions to a different temperature than the two regions. An infrared detector is provided for detecting radiation emitted from the third region. The base, the first chuck mounting mechanism, the first chuck, and the second chuck together comprise a fluid circuit for circulating a fluid through the base, the first chuck mounting mechanism, the first chuck and the second chuck.

REFERENCES:
patent: 3433051 (1969-03-01), Parker
patent: 3680357 (1972-08-01), Clusener
patent: 3805589 (1974-04-01), Clusener et al.
patent: 3877290 (1975-04-01), Cheng
patent: 3919879 (1975-11-01), Betz
patent: 4313679 (1982-02-01), Wolff et al.

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