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'A NON DESTRUCTIVE TESTING PROCESS FOR SEGREGATION OF DETECTIVE JOINTS FROM ACCEPTABLE JOINTS IN FABRIC BELTS OF FABRIC CONVEYOR BELTS BY PULSE ECHO VELOCITY TECHNIQUE'
'A NON DESTRUCTIVE TESTING PROCESS FOR SEGREGATION OF DETECTIVE JOINTS FROM ACCEPTABLE JOINTS IN FABRIC BELTS OF FABRIC CONVEYOR BELTS BY PULSE ECHO VELOCITY TECHNIQUE'
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机译：“通过脉冲回波速度技术从织物传送带的织物带中可接受的连接点分离检测连接点的非破坏性测试过程”
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摘要
The invention relates to a non destructive testing process for segregation of detective joints from acceptable joints in fabric belts of fabric conveyor belts by pulse echo velocity technique, comprising providing a plurality of different portions of a fabric be forming a plurality of specimens from each portion, said specimens being of a predetermined size; preparing samples of fabric belt having known size of artificial holes; making initial calibration of a testing instrument by placing a reference bar with engraved pulse transit time; balancing the instrument; placing a fabric belt which contains no defects, to measure the transit time; recording shifting of the transmit time due to presence of the artificial holes of different diameters; and determining the condition of the fabric belt joints based on said recorded shifting of the transit time.
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