| 45~#钢热处理组织的超声频域分析检测法 |
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| 引用本文： | 刘静,杨思乾,张勇,张赋升. 45~#钢热处理组织的超声频域分析检测法[J]. 机械科学与技术, 2003, 22(1): 129-131 |
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| 作者姓名： | 刘静 杨思乾 张勇 张赋升 |
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| 作者单位： | 刘静（西北工业大学,西安,710072）;杨思乾（西北工业大学,西安,710072）;张勇（西北工业大学,西安,710072）;张赋升（西北工业大学,西安,710072） |
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| 摘 要： | 用水浸聚焦透射法对 38m m的不同热处理状态 45 #钢进行检测。其中 ,发射探头距离试件表面 2 2 mm,以使焦点落在试件表面 ,接收探头紧贴试件表面。对接收到的高频超声检测信号进行 FFT及其相应的频谱分析 ,检测结果表明组织的变化可以在幅频图上表现出来。淬火组织的有效谱宽度较小 ,谐波系数较大 ;而退火组织的有效谱宽度较大 ,谐波系数较小。两者在幅频图中的最高峰值所对应的初始相位也有差别。
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| 关 键 词： | 超声检测 热处理组织 频谱分析 |
| 文章编号： | 1003-8728(2003)01-0129-03 |
| 修稿时间： | 2001-08-21 |
Ultrasonic Testing of Heat Treatment Structure of 45# Steel Using Frequency Domain Analysis Method |
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| LIU Jing,YANG Si-qian,ZHANG Yong,ZHANG Fu-sheng. Ultrasonic Testing of Heat Treatment Structure of 45# Steel Using Frequency Domain Analysis Method[J]. Mechanical Science and Technology for Aerospace Engineering, 2003, 22(1): 129-131 |
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| Authors: | LIU Jing YANG Si-qian ZHANG Yong ZHANG Fu-sheng |
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| Abstract: | The different heat treatment structures of 45# steel, with a diameter of 38mm are examined with the ultrasonic immersion focusing and passing through method. In this experiment, in order to make the launching probe′s focal point be right on the surface of the sample, the distance from the launching probe to the surface of the sample is 22mm, and the receiving probe is kept close to the surface of the sample. The received high frequency ultrasonic signals are analyzed with FFT and relevant frequency domain analysis methods. The results show that different heat treatment structures are distinguishable in phase-frequency figure and amplitude-frequency figure. For the quenching structure, effective line width is narrower and component coefficient is larger than annealing structure. The initial phase of highest line in amplitude-frequency figure is different too. |
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| Keywords: | Ultrasonic testing Heat treatment structure Frequency domain analysis |
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