PE管超声检测试验.pdf
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1、ND T 83 PE 1 , 2 , 1 , 1 (1.,330063; 2.,330063) :PEPE,PE , PE :;PE; : TG115. 28 ; TQ317. 3:A:1000 6656(2008)02 0112 03 The Applications of U ltrasonic Testing for PE Pipe YU Run Qiao1, XU Chang Ying2, LUO Shui Yun1, WANG Long Wen1 (1. Key Laboratory of No ndest ructive Test (Ministry of Education) ,
2、 Nanchang Hangkong University , Nanchang 330063 , China ; 2. Nanchang University of Aeronautics Faculty of Comp uting , Nanchang 330063 , China) Abstract : By measuring the longit udinal and shear wave velocity of PE pipe and it s ultrasonic attenuation of hot melt weld , the acoustic properties of
3、PE pipe was determined. Wavelet denoising technique was used to remove noise , and it improved the monitoring of the echo signal to noise ratio. Experiments showed that ultrasonic testing met hod was suitable for the weld qualit y testing of PE pipe. Keywords :Ultrasonic testing ; PE pipe ; Sound ve
4、locity ; Ultrasonic attenuation ; Signal processing ,PE , 1 PEPE , , PE, , ( ),PE PE PE 2 -4 1PE PE :2007 04 25 (63) , , ,=/ TS 2028 ,5P14Z,5P20Z,2. 5P14Z 2. 5P1215K1 / (A/ D) 40 MHz ( , ) () PIV 5 1. 1 5P14Z, 5 MHz ,3. 16.9 MHz , PE, ,15 , 8 20002 :19- 101 211 :PEND T 83 1 N1 ,t1, N5 ,t5; A/ Dfs, L
5、, : Cl= 2L (5-1) fs ( t5- t1) (1) , 0. 02 mm ,A/ Dfs , 8 m/ sPE1 1PE / mm / ms- 1 / mm / ms- 1 137. 962 641415. 542 923 218. 442 525516. 282 568 340. 022 360 PE, , , 1. 2 , , 2, ( L0) AA, ,A L1LA, h1=L 2 A+(L1+L0) 2 , BB, ,= 2 L2B + ( L2+L0) 2 A ,t, : Cs= 2 ( h 2- h1) t (2) ,PE 75 m/ s1.25P12 15K1,P
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- PE 超声 检测 试验
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