声发射相关论文，探头安装实例图片、信号实例

显示全部楼层 · 2013-1-5 11:51:07

128 0 00:00:00.0000000 Acquisition Running

ID DDD HH:MM:SS.mmmuuun PARA1 CH RISE COUN ENER DURATION AMP

1 0 00:00:36.7095215 -0.0037 1 54 1920 3699 21145 95

1 0 00:00:36.7095290 -0.0037 3 356 4143 9532 45723 97

1 0 00:00:36.7095320 -0.0037 2 414 1885 3199 21260 92

* Gp# 1[1,3,2] x = 709.5, y = 619.4 dT[ 7, 10] Src Amplitude = 95.0

* 0 00:00:36.7095215 -0.0037 1 54 1920 3699 21145 95

* 0 00:00:36.7095290 -0.0037 3 356 4143 9532 45723 97

* 0 00:00:36.7095320 -0.0037 2 414 1885 3199 21260 92

1 0 00:02:58.5564825 -0.0024 1 1 2 0 4 44

1 0 00:03:31.6597205 -0.0003 1 253 9 2 451 42

1 0 00:03:35.1094187 -0.0018 1 191 47 5 650 48

1 0 00:03:39.4023077 -0.0009 1 2 2 0 9 45

1 0 00:03:39.4419760 -0.0027 1 2 3 0 10 47

1 0 00:03:39.4820147 -0.0067 1 2 3 0 11 47

1 0 00:03:39.5220895 -0.0031 1 2 4 0 17 47

1 0 00:03:39.5626390 -0.0015 1 2 2 0 9 44

1 0 00:03:39.7582560 -0.0037 1 13 43 5 733 45

1 0 00:03:54.3399947 -0.0006 1 362 142 12 1030 47

1 0 00:03:57.3084017 -0.0003 1 10 4 0 40 42

1 0 00:04:00.5056237 -0.0003 1 191 137 13 1113 50

1 0 00:04:39.8939677 0.0009 1 4 5 0 25 50

1 0 00:04:39.9168007 -0.0024 1 0 2 0 9 46

1 0 00:04:39.9566887 -0.0018 1 4 3 0 11 46

1 0 00:04:39.9966987 -0.0034 1 4 4 0 19 46

1 0 00:04:40.0367645 -0.0009 1 1 3 0 11 46

1 0 00:04:40.0768815 -0.0006 1 1 3 0 9 46

1 0 00:04:40.1170355 -0.0027 1 1 2 0 8 44

1 0 00:04:40.1572327 -0.0003 1 2 2 0 9 43

1 0 00:04:40.1974860 -0.0034 1 2 1 0 2 41

1 0 00:04:49.2026020 -0.0024 1 2 1 0 2 40

1 0 00:04:49.2292020 -0.0021 1 2 4 0 28 48

1 0 00:04:49.2623947 -0.0037 1 2 1 0 28 40

1 0 00:04:49.2888257 -0.0024 1 4 5 0 28 48

1 0 00:04:49.3219987 -0.0006 1 4 1 0 28 40

1 0 00:04:49.3484760 -0.0027 1 2 4 0 20 49

1 0 00:04:49.3816165 -0.0015 1 2 1 0 20 40

1 0 00:04:49.4080300 -0.0040 1 2 4 0 20 50

1 0 00:04:49.4411875 -0.0027 1 2 1 0 7 42

1 0 00:04:49.4676930 -0.0021 1 2 4 0 21 49

1 0 00:04:49.5009290 -0.0024 1 2 2 0 13 41

1 0 00:04:49.5274320 -0.0027 1 2 4 0 21 50

1 0 00:04:49.5606480 -0.0012 1 2 2 0 13 41

1 0 00:04:49.5872027 -0.0021 1 2 5 0 22 49

1 0 00:04:49.6204870 -0.0015 1 7 2 0 13 41

1 0 00:04:49.6470470 -0.0052 1 2 4 0 21 51

1 0 00:04:49.6803505 -0.0052 1 12 2 0 29 41

1 0 00:04:49.7069700 -0.0018 1 2 4 0 21 49

1 0 00:04:49.7402815 -0.0006 1 29 2 0 29 41

1 0 00:04:49.7669307 -0.0012 1 2 5 0 22 50

1 0 00:04:49.8003210 -0.0027 1 2 2 0 8 41

1 0 00:04:49.8269470 -0.0061 1 2 5 0 23 50

1 0 00:04:49.8603327 -0.0024 1 12 2 0 12 41

1 0 00:04:49.8869617 -0.0012 1 1 5 0 22 49

1 0 00:04:49.9203350 -0.0027 1 1 2 0 29 41

1 0 00:04:49.9469780 -0.0027 1 2 5 0 23 50

1 0 00:04:49.9803187 -0.0015 1 12 2 0 29 41

1 0 00:04:50.0069560 -0.0027 1 2 5 0 23 49

1 0 00:04:50.0402905 -0.0034 1 2 3 0 29 41

1 0 00:04:50.0669215 -0.0034 1 2 5 0 22 50

1 0 00:04:50.1002495 -0.0027 1 2 3 0 29 43

1 0 00:04:50.1268800 -0.0034 1 2 5 0 21 49

1 0 00:04:50.1602137 -0.0015 1 0 2 0 12 41

1 0 00:04:50.1868350 -0.0015 1 2 4 0 21 49

1 0 00:04:50.2201727 -0.0018 1 12 1 0 12 40

1 0 00:04:50.2467790 -0.0021 1 2 5 0 23 49

1 0 00:04:50.2801527 -0.0034 1 0 3 0 29 42

1 0 00:04:50.3067557 -0.0027 1 1 5 0 22 49

1 0 00:04:50.3401390 -0.0003 1 1 2 0 3 42

1 0 00:04:50.3667457 -0.0024 1 2 4 0 20 49

1 0 00:04:50.4000865 -0.0015 1 7 2 0 12 42

1 0 00:04:50.4267430 -0.0027 1 2 4 0 21 50

1 0 00:04:50.4600757 -0.0006 1 0 2 0 12 41

1 0 00:04:50.4867005 -0.0052 1 1 4 0 20 49

1 0 00:04:50.5200657 -0.0024 1 0 1 0 0 41

1 0 00:04:50.5466660 -0.0031 1 2 5 0 23 49

1 0 00:04:50.5799897 -0.0018 1 0 2 0 3 42

1 0 00:04:50.6066450 -0.0034 1 2 5 0 20 49

1 0 00:04:50.6399700 -0.0034 1 2 2 0 0 41

1 0 00:04:50.6665745 -0.0034 1 1 5 0 22 49

1 0 00:04:50.6999450 -0.0024 1 1 1 0 0 41

1 0 00:04:50.7265927 -0.0015 1 2 5 0 23 50

1 0 00:04:50.7599285 -0.0027 1 2 2 0 12 43

1 0 00:04:50.7865545 -0.0018 1 1 5 0 22 49

1 0 00:04:50.8199300 -0.0034 1 1 1 0 3 42

1 0 00:04:50.8465820 -0.0018 1 2 5 0 32 49

1 0 00:04:50.8799315 -0.0015 1 2 2 0 29 43

1 0 00:04:50.9065487 -0.0034 1 2 5 0 23 49

1 0 00:04:50.9399080 0.0003 1 2 1 0 0 41

1 0 00:04:50.9665397 -0.0027 1 2 4 0 20 49

1 0 00:04:50.9999367 -0.0027 1 0 1 0 0 41

1 0 00:04:51.0265690 -0.0006 1 2 5 0 28 49

1 0 00:04:51.0599147 -0.0015 1 0 2 0 29 42

1 0 00:04:51.0865725 -0.0070 1 2 5 0 28 50

1 0 00:04:51.1199637 -0.0018 1 0 1 0 0 41

1 0 00:04:51.1466235 -0.0027 1 2 4 0 20 49

1 0 00:04:51.1800237 -0.0046 1 0 2 0 0 41

1 0 00:04:51.2066995 -0.0015 1 1 5 0 22 49

1 0 00:04:51.2401595 -0.0052 1 1 1 0 22 40

1 0 00:04:51.2668340 -0.0040 1 2 4 0 20 49

1 0 00:04:51.3002437 -0.0037 1 2 1 0 20 40

1 0 00:04:51.3268707 -0.0018 1 2 4 0 20 48

1 0 00:04:51.3602120 -0.0015 1 2 1 0 0 40

1 0 00:04:51.3868157 -0.0021 1 2 4 0 17 49

1 0 00:04:51.4201155 -0.0021 1 2 1 0 17 40

1 0 00:04:51.4466720 -0.0018 1 2 4 0 20 49

1 0 00:04:51.4798850 -0.0040 1 2 1 0 0 40

1 0 00:04:51.5063580 -0.0052 1 2 4 0 20 49

1 0 00:04:51.5392560 -0.0018 1 2 2 0 12 41

1 0 00:04:51.5660887 -0.0012 1 2 5 0 20 49

1 0 00:04:51.5995680 -0.0006 1 2 1 0 3 41

1 0 00:04:51.6262127 -0.0024 1 2 4 0 20 49

1 0 00:04:51.6595610 -0.0021 1 2 2 0 3 43

1 0 00:04:51.6861760 -0.0015 1 2 4 0 20 49

1 0 00:04:51.7195137 -0.0024 1 0 2 0 12 42

1 0 00:04:51.7461257 -0.0040 1 2 4 0 20 49

1 0 00:04:51.7794635 -0.0027 1 2 1 0 2 41

1 0 00:04:51.8060767 -0.0021 1 2 4 0 20 49

1 0 00:04:51.8394140 -0.0012 1 12 1 0 12 41

1 0 00:04:51.8660275 -0.0021 1 1 4 0 20 49

1 0 00:04:51.8993650 -0.0040 1 3 1 0 3 40

1 0 00:04:51.9259785 -0.0015 1 1 5 0 22 50

1 0 00:04:51.9593167 -0.0052 1 0 2 0 12 41

1 0 00:04:51.9859310 -0.0003 1 2 5 0 20 49

1 0 00:04:52.0192700 -0.0018 1 2 2 0 3 41

1 0 00:04:52.0458837 -0.0034 1 2 4 0 20 49

1 0 00:04:54.0568785 -0.0012 1 27 4 2 1005 41

1 0 00:04:54.3268595 -0.0015 1 494 47 6 794 47

1 0 00:04:54.8964640 -0.0061 1 619 44 6 808 50

1 0 00:06:03.0173255 -0.0015 1 26 6 4 1067 42

1 0 00:06:06.4600137 -0.0018 1 1007 170 15 1266 47

1 0 00:06:10.7560615 -0.0021 1 1007 3 0 9 46

1 0 00:06:10.7890920 -0.0015 1 1007 1 0 0 40

1 0 00:06:10.8157555 -0.0031 1 1007 4 0 17 47

1 0 00:06:10.8558047 -0.0067 1 1 4 0 19 47

1 0 00:06:10.8963440 -0.0015 1 1 2 0 9 45

1 0 00:06:10.9369655 -0.0015 1 1 2 0 1 40

1 0 00:06:11.1234475 -0.0046 1 66 91 9 1092 45

1 0 00:06:25.6380087 -0.0037 1 2 84 8 1062 45

1 0 00:06:28.6054205 -0.0058 1 377 5 1 377 42

1 0 00:06:31.8183787 -0.0024 1 280 94 10 1087 46

1 0 00:06:41.5663207 -0.0034 1 2 4 0 120 42

1 0 00:06:41.7085710 -0.0034 1 3 2 0 8 44

1 0 00:06:41.7442257 -0.0003 3 43 2 0 47 42

1 0 00:06:41.7457097 -0.0015 1 393 7 3 932 48

1 0 00:06:41.7698305 -0.0037 1 7 14 2 208 53

1 0 00:06:41.7929327 -0.0015 1 153 9 1 157 44

1 0 00:06:41.8160520 -0.0052 1 35 6 0 73 44

1 0 00:06:41.8923635 -0.0058 1 16 8 1 83 48

1 0 00:06:41.9886385 -0.0040 1 33 12 1 136 49

1 0 00:06:42.0375980 -0.0024 1 8 22 3 252 51

1 0 00:06:42.0630567 -0.0015 1 44 4 0 49 44

1 0 00:06:42.0876930 -0.0015 1 28 3 0 31 42

1 0 00:06:42.1161850 -0.0018 1 50 2 0 50 40

1 0 00:06:42.1648107 -0.0015 1 13 20 3 194 53

1 0 00:06:42.2219195 -0.0012 1 140 10 3 798 47

1 0 00:06:42.2452030 -0.0021 1 4698 15 22 6606 45

1 0 00:06:42.2757775 -0.0003 1 835 17 9 2658 49

1 0 00:06:42.3010885 -0.0034 1 835 1 2 2658 40

1 0 00:06:42.5704900 -0.0027 1 119 13 2 218 47

1 0 00:06:42.6912040 -0.0055 1 4 2 0 10 48

1 0 00:06:42.6914650 -0.0018 3 16 3 0 16 41

1 0 00:06:53.9999637 -0.0027 1 4 4 0 14 50

1 0 00:06:54.0261370 -0.0015 1 4 2 0 9 46

1 0 00:06:54.0658367 -0.0018 1 4 3 0 11 47

1 0 00:06:54.1058515 -0.0055 1 2 4 0 17 46

1 0 00:06:54.1459217 -0.0012 1 4 4 0 28 46

1 0 00:06:54.1860380 -0.0009 1 2 3 0 11 46

1 0 00:06:54.2262177 -0.0018 1 0 2 0 9 45

1 0 00:06:54.2664227 -0.0018 1 2 2 0 9 43

1 0 00:06:54.3066870 -0.0018 1 2 1 0 2 42

15 407 05:26:12.0888317 Acquisition Aborted

barbaria · 2013-1-5 11:53:32

声发射文章

barbaria · 2013-1-5 12:02:16

barbaria 发表于 2013-1-5 11:53
声发射文章

1、检测过程中的部分数据

ID DDD HH:MM:SS.mmmuuun PARA1 CH RISE COUN ENER DURATION AMP新图片

图一检测过程中的部分数据

2、摩擦模拟信号的部分数据

采自信号线与钢板之间的摩擦

ID DDD HH:MM:SS.mmmuuun PARA1 CH RISE COUN ENER DURATION AMP新图片（1）

图二摩擦模拟信号的部分数据

3、电子噪声信号

探头产生的噪声信号

ID DDD HH:MM:SS.mmmuuun PARA1 CH RISE COUN ENER DURATION AMP 新图片（2）

图三电子噪声信号

图一中13通道中的信号与图二中的信号相似，图一中4通道中的信号与图三中的信号相似。

通过以上数据的对比分析可以看出，在检测过程中存在着大量的摩擦信号。分析产生的原因可能是以下几点：

1、结构的摩擦，脚手架、容器的支座、裙座、柱腿和平台等焊接垫板所引起，产生的声发射定位源散布在较大的范围，而且不满足Kaiser效应，即在降压后的第二次升压过程中仍产生大量的声发射信号。

2、检测过程中信号线未有效的固定，检测过程中有风存在导致信号线与容器本体产生摩擦。大风可吹动脚手架上的砂子或移动的物体撞击容器的外壳，风吹动引起的声发射定位源信号散布在容器迎风面的区域。

3、电子噪声，根据大量压力容器现场检验的经验发现，采集到的几乎所有的电子噪声信号不是来自外部环境，而是来自声发射仪器系统的内部。声发射系统内部的电子噪声源主要包括探头、信号线、前置放大器、电缆线及信号采集板等。

下次检测中应注意的问题：

1、避免在大风天进行检测，固定好信号线，避免摩擦。

2、排除结构的摩擦，特别是脚手架、容器的支座等。

3、电子噪声由于来自不同通道的电子信号是互不相关的，所以不会形成稳定的声发射定位源。所以一般不必考虑。

4、检测前背景噪声的测量中不应存在干扰信号。

5、摩擦信号与电子噪声形成声发射事件无法在实际的容器上定位。

参考文献

1、沈功田等，无损检测，《现场压力容器检验的声发射源》，第21卷第7期321～325，1999年7月

{:soso_e181:}

[讨论] 声发射相关论文，探头安装实例图片、信号实例

本帖子中包含更多资源

相关帖子

本帖子中包含更多资源

本帖子中包含更多资源