REMOTE NON-CONTACT SONIC SPEED/HEAT CONDUCTIVITY MEASURING METHOD BASED ON MEASUREMENT OF REFLECTED LIGHT OF PULSE LASER INDUCED ELASTIC WAVE ATTENUATION PROCESS

REMOTE NON-CONTACT SONIC SPEED/HEAT CONDUCTIVITY MEASURING METHOD BASED ON MEASUREMENT OF REFLECTED LIGHT OF PULSE LASER INDUCED ELASTIC WAVE ATTENUATION PROCESS

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to measure an activation material and a high-temperature material because contact measurement is inevitable theoretically in a presently used sonic speed measuring method and methods for measuring heat conductivity showing the heat prop...

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Hauptverfasser: NISHIMURA AKIHIKO, SHIMADA KOYO
Format: Patent
Sprache:eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator NISHIMURA AKIHIKO
SHIMADA KOYO
description PROBLEM TO BE SOLVED: To solve the problem that it is difficult to measure an activation material and a high-temperature material because contact measurement is inevitable theoretically in a presently used sonic speed measuring method and methods for measuring heat conductivity showing the heat propagation efficiency through the material surface of a metal are also variously present but the contact measurement of a temperature is inevitable in these methods in order to precisely detect the temperature. SOLUTION: A sonic wave is generated along the surface or inside of a substance by a theory of an induction light scattering method using a short pulse laser and the sonic speed of the sound wave, which is formed from the time response of reflected or diffracted light when probe light is applied to the sound wave formed place, and heat conductivity are measured at the same time. COPYRIGHT: (C)2008,JPO&INPIT
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title REMOTE NON-CONTACT SONIC SPEED/HEAT CONDUCTIVITY MEASURING METHOD BASED ON MEASUREMENT OF REFLECTED LIGHT OF PULSE LASER INDUCED ELASTIC WAVE ATTENUATION PROCESS
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