| SPCC钢动态摩擦与塑性变形声发射信号对比分析 |
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| 引用本文： | 高宏,张守茁,席镇,贾园,魏盛春. SPCC钢动态摩擦与塑性变形声发射信号对比分析[J]. 无损检测, 2010, 0(2): 90-94 |
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| 作者姓名： | 高宏 张守茁 席镇 贾园 魏盛春 |
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| 作者单位： | 内蒙古工业大学 材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50565002) |
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| 摘 要： | 金属板材在塑性加工中不可避免产生摩擦。利用声发射技术检测塑性加工的摩擦状况。以SPCC钢在单向拉伸与相对运动速度为100mm/min、正压力为7.5 kg的动态摩擦过程产生的声发射信号为研究对象,采用参数关联分析方法对两种信号进行了对比分析。试验结果表明,在相同采集的条件下有①摩擦声发射幅度与拉伸声发射幅度相差不大。②幅度相同时的摩擦声发射能量值比拉伸过程产生的声发射能量值要大得多;而摩擦声发射振铃计数值却小于拉伸声发射振铃计数值。③动态摩擦过程产生的声发射信号的持续时间在从很低到8 000μs这一范围;而拉仲过程声发射信号的持续时间一般低于5 800μs,仅当出现裂纹或断裂时才出现更高的持续时间的声发射信号。
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| 关 键 词： | 动态摩擦 塑性变形 声发射检测 参数关联分析方法 |
The Comparative Analysis of Acoustic Emission Signals of Dynamic Friction and Plastic Deformation of Steel SPCC |
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| GAO Hong,ZHANG Shou-Zhuo,XI Zhen,JIA Yuan,WEI Sheng-Chun. The Comparative Analysis of Acoustic Emission Signals of Dynamic Friction and Plastic Deformation of Steel SPCC[J]. Nondestructive Testing, 2010, 0(2): 90-94 |
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| Authors: | GAO Hong ZHANG Shou-Zhuo XI Zhen JIA Yuan WEI Sheng-Chun |
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| Affiliation: | GAO Hong,ZHANG Shou-Zhuo,XI Zhen,JIA Yuan,WEI Sheng-Chun (School of Material Science & Engineering,Inner Mongolia University of Technology,Hohhot 010051,China) |
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| Abstract: | It is inevitable to come into being friction in plastic working of metal plate.In order to detect the frictions of metal plastic deform by use of the acoustic emission technique,this paper studied the character of the acoustic emission produced in uniaxial tension and dynamic friction,the relative movement speed is 100mm/min,the stress is 7.5kg,of the steel SPCC.These two signals were compared and analyzed by use of the analysis method of relational parameters.The experimental results showed that(at the sam... |
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| Keywords: | Dynamic friction Plastic deformation Acoustic emission detecting The analysis method of relational parameters |
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