| 用超声波时间穿越法监测和评价钢板间电阻点焊接质量 |
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| 引用本文： | 陶进绪,段新权.用超声波时间穿越法监测和评价钢板间电阻点焊接质量[J].中国科学技术大学学报,2002,32(5):511-515. |
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| 作者姓名： | 陶进绪 段新权 |
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| 作者单位： | 中国科学技术大学电子工程和信息科学系,安徽合肥,230027 |
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| 摘 要： | 提出了一种利用超声波在线监测和评价钢板间电阻点焊接质量的方法，该方法采用超声换能器内置于电极技术，在电极焊接过程中，超声波穿透焊接区域，接收的超声波特性受焊接区域温度变化以及局部区域固相到液相变化和凝固等因素影响，文中提取并分析了超声波时延、时延斜率和穿越峰峰值时间间隔等参数对焊接质量的影响。
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| 关 键 词： | 超声波时间穿越法 焊接质量 电极点焊接 时间延迟 峰峰值时间间隔 钢板焊接 |
TOF Method for Monitor and Evaluation of Resistance Spot Welding |
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| Abstract.TOF Method for Monitor and Evaluation of Resistance Spot Welding[J].Journal of University of Science and Technology of China,2002,32(5):511-515. |
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| Authors: | Abstract |
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| Abstract: | A new ultrasonic method for evaluation or monitor of the resistance spot welding process is introduced. The method is based on electrode built in ultrasonic transducer technology by measuring acoustical signals transmitted through the weld region on line. The transmitted signal is affected by temperature changes in the welded region during solidification and cooling of the melting pool. Parameters of the maximum thermal expansion, the slope of time delay and the range of the TOF are used to evaluate weld quality. |
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| Keywords: | resistance spot welding thermal expansion time delay |
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