Uchrezhdenie nauki "Inzhenerno-konstruktorskij tsentr soprovozhdeniya ekspluatatsii kosmicheskoj tekhniki" (Uchrezhdenie nauki IKTS SEKT)
发明人:
Karabutov Aleksandr Alekseevich,Simonova Varvara Arkadevna,Berkutov Igor Vladimirovich,Prokhorovich Vladimir Evgenevich,Fedorov Aleksej Vladimirovich,Bychenok Vladimir Anatolevich
申请号：
RU20160139750
公开号：
RU2643232(C1)
申请日:
2016.10.10
申请国别(地区):
俄罗斯
年份:
2018
代理人:
摘要：
FIELD: physics.SUBSTANCE: method of measuring the propagation velocity change of the head ultrasonic wave involves the initiation and reception of ultrasonic pulses held on the product, the digitization of pulses, the entry in the computer, and the definition of the time intervals between the pulses. The head acoustic wave is excited by laser radiation, a laser spot is formed and its associated excited acoustic beam, a generated acoustic beam, is directed from the generator at an angle β close to the first critical one, through the sound line to the product surface, and then is received at an angle - β through two sound lines spaced apart from each other and the generator by a distance L. The sound lines are made in the form of prisms made of a synthetic polymer of methyl methacrylate. The device implementing the proposed method, contains a laser pulse generator, an optical-acoustic transducer, a product, points of removing the ultrasonic pulses from the first and the second piezo-receiver, the first ADC bl
