| 超声激励方式对检测信号的影响 |
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| 引用本文： | 杨剑,高成强,刘晓方.超声激励方式对检测信号的影响[J].无损检测,2010(1):36-38. |
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| 作者姓名： | 杨剑 高成强 刘晓方 |
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| 作者单位： | 第二炮兵工程学院; |
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| 摘 要： | 为了分析不同激励方式对超声检测信号的影响，采用尖脉冲和方波脉冲两种激励源激励超声换能器，在充电电压及脉冲重复频率相同的条件下，分别对碳纤维复合材料、铝合金材料进行超声检测，对比分析回波信号特征。结果表明，相同电压和脉冲重复频率下，方波激励得到的超声检测信号幅值是尖脉冲激励的两倍，方波激励下的回波信号噪声干扰比尖脉冲大，在实际生产使用过程中，方波激励更适合于碳纤维复合材料的超声检测。
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| 关 键 词： | 超声波检测 换能器 尖脉冲 方波脉冲 检测信号 |
Affect of Different Simulation Mode on Ultrasonic Testing Signal |
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| YANG Jian,GAO Cheng-Qiang,LIU Xiao-Fang.Affect of Different Simulation Mode on Ultrasonic Testing Signal[J].Nondestructive Testing,2010(1):36-38. |
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| Authors: | YANG Jian GAO Cheng-Qiang LIU Xiao-Fang |
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| Affiliation: | YANG Jian,GAO Cheng-Qiang,LIU Xiao-Fang (The Second Artillery Engineering College,Xi\'an 710025,China) |
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| Abstract: | In order to analyze the effect of different exciting modes on ultrasonic testing signal,the characters of ultrasonic testing signals received from carbon fiber reinforced plastics(CFRP) and aluminum alloy which were tested by ultrasonic transducer were analyzed,and the transducer was simulated by sharp pulse and square pulse. The experimental results proved that the amplitude of ultrasonic testing signal excited by square pulse was 2 times of that excited by sharp pulse on the same voltage,and the noise in ... |
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| Keywords: | Ultrasonic testing Transducer Sharp pulse Square pulse Testing signal |
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