Correcting method for radial travel time in ultrasonic CT detection

Correcting method for radial travel time in ultrasonic CT detection

The invention provides a correcting method for radial travel time in ultrasonic CT detection. The correcting method is oriented to ultrasonic detection of concrete with a heterogeneity ecderon layer, wherein the reflection echo of an ultrasonic signal on an interface between the ecderon layer and th...

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Hauptverfasser: ZHENG GANGBING, ZHU ZHAOGANG, GAO YUN, WANG LIZI
Format: Patent
Sprache:chi ; eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator ZHENG GANGBING
ZHU ZHAOGANG
GAO YUN
WANG LIZI
description The invention provides a correcting method for radial travel time in ultrasonic CT detection. The correcting method is oriented to ultrasonic detection of concrete with a heterogeneity ecderon layer, wherein the reflection echo of an ultrasonic signal on an interface between the ecderon layer and the concrete is collected, the first wave travel time of the reflection echo is utilized to correct the radial travel time and the part transmitted on the ecderon layer in the radial travel time is eliminated, so that the influence of the ecderon layer on the radial travel time after being corrected can be eliminated and the signal transmission time of the ultrasonic signal in the concrete can be accurately reflected. The correcting method provided by the invention has the characteristics that the ultrasonic signal with time-varying characteristics is utilized to overcome the influences of signal attenuation, various echoes and bottom waves in the process of detecting the reflection echo of the signal emitted at each
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title Correcting method for radial travel time in ultrasonic CT detection
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