Method of and apparatus for nondestructively determining the com

Details Method of and apparatus for nondestructively determining the com Method of and apparatus for nondestructively determining the com

1989-06-12

1991-10-01

Yasich, Daniel M.

Thermal measuring and testing

Determination of inherent thermal property

374 12, G01N 2500

Patent

active

050528190

ABSTRACT:
This invention presents an improved way to determine, nondestructively, the composition of an unknown material sample such as, for example, a steel fastener of unknown standard grade. The procedure involves subjecting one end of a standard grade steel fastener of known length and weight to a pulse of heat and subjecting an identically-sized fastener of unknown grade to the equivalent or same conditions for an interval of time for the same finite length and comparing the time varying temperature pattern at the same heated ends of each fastener. The temperature of said locations can be monitored during the time heat is applied.

REFERENCES:
patent: 3981175 (1976-01-01), Hammond, III et al.

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