| 内梅花弹体的超声信号分析与处理方法 |
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| 引用本文： | 靳朋飞,张艳花,杨录. 内梅花弹体的超声信号分析与处理方法[J]. 山西电子技术, 2011, 0(6): 14-16 |
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| 作者姓名： | 靳朋飞 张艳花 杨录 |
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| 作者单位： | 中北大学信息与通信工程学院电子测试技术国家重点实验室; |
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| 摘 要： | 内梅花弹体其内壁结构相对复杂，动态超声无损检测过程中则会出现棱波和台阶波形成干扰信号，使其背景噪声相对复杂，使用滤波方法无法将这两种信号与伤信号分离。针对这一问题提出了基于滑动平均的动态包络提取方法来消除这两种干扰。试验证明了这种方法可以有效地将棱波与台阶波去除，在工件探伤过程中取得了良好的效果。
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| 关 键 词： | 超声无损检测 异形构件 动态包络提取 |
The Ultrasonic Signal Analysis and Processing of Inner Plum Blossom Shaped Body |
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| Jin Peng-fei,Zhang Yan-Hua,Yang Lu. The Ultrasonic Signal Analysis and Processing of Inner Plum Blossom Shaped Body[J]. Shanxi Electronic Technology, 2011, 0(6): 14-16 |
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| Authors: | Jin Peng-fei Zhang Yan-Hua Yang Lu |
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| Affiliation: | Jin Peng-fei,Zhang Yan-Hua,Yang Lu(National Key Laboratory for Electronic Measurement Technology,College of Information and Communication Engineering,North University of China,Taiyuan Shanxi 030051,China) |
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| Abstract: | Because of the complex inner wall,the edge wave and the step wave will generate two kinds of interference signal under the ultrasonic nondestructive testing(NDT)way.They make the perplexed background noises,the injured signal cannot be separated from them when use the filter.To solve this problem,the article devises a dynamic envelope extraction method which based on moving average to eliminate these interference signals.Tests show that this method can effectively remove the two interference signals,and ach... |
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| Keywords: | ultrasonic nondestructive testing profiled component extraction of dynamic envelope |
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