排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
The experimental pressure contact system with a single transducer has been developed to detect internalpipes and measure ultrasonic wave velocities at temperatures up to 1120℃ and 1300℃,respectively.In thispaper,the design of the system and the special hardware and software about the inspection and the signalprocessing are described;the relation between the echo amplitude and the pressure exerted is analysed,as wellas the formulas and some of the experimental results of pipe detecting are also given.An application has beenmade for a patent. 相似文献
2.
4.
1