| Characteristics of ultrasonic vibration transmission in bonding process |
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| 作者姓名： | 李军辉 闵四宗 韩雷 钟掘 |
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| 作者单位： | School of Mechanical and Electronical Engineering,Central South University, Changsha 410083, China |
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| 摘 要： | The transmitting models of ultrasonic vibration in ultrasonic transducer and capillary were presented according to the propagating mechanism of ultrasonic wave in elastic body. The coupling characteristics of ultrasonic longitudinal-complex transverse vibration system were simulated by Matlab software. The ultrasonic vibration displacement and the velocity of high frequency were measured by using the PSV-400-M2 （1.5 MHz） laser Doppler vibrometer. The vibration locus shapes driven by the same frequency and different frequencies were tested by using GDS-820S dual channel digital oscilloscope. The microstructures at bonding interface were observed by means of KYKY2800 scanning electron microscope. The results show that ultrasonic vibration displacement or velocity and energy density increase with the decrease of section area in the transmitting process. The vibration locus shapes driven simultaneously by the same frequency and different frequencies are elliptical （or circular） loci and rectangular （or square） loci, respectively. And the characteristics at bonding interface are improved by coupling loci.
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| 关 键 词： | 超声波 振动作用 压焊方法 焊接工艺 |
| 文章编号： | 1005-9784（2005）05-0567-05 |
| 收稿时间： | 2004-12-18 |
| 修稿时间： | 2005-02-26 |
Characteristics of ultrasonic vibration transmission in bonding process |
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| Li Jun-hui , Min Si-zong , Han Lei and Zhong Jue.Characteristics of ultrasonic vibration transmission in bonding process[J].Journal of Central South University of Technology,2005,12(5):567-571. |
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| Authors: | Li Jun-hui Min Si-zong Han Lei and Zhong Jue |
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| Affiliation: | (1) School of Mechanical and Electronical Engineering, Central South University, 410083 Changsha, China |
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| Abstract: | The transmitting models of ultrasonic vibration in ultrasonic transducer and capillary were presented according to the propagating mechanism of ultrasonic wave in elastic body. The coupling characteristics of ultrasonic longitudinal-complex transverse vibration system were simulated by Matlab software. The ultrasonic vibration displacement and the velocity of high frequency were measured by using the PSV-400-M2(1.5 MHz) laser Doppler vibrometer. The vibration locus shapes driven by the same frequency and different frequencies were tested by using GDS-820S dual channel digital oscilloscope. The microstructures at bonding interface were observed by means of KYKY2800 scanning electron microscope. The results show that ultrasonic vibration displacement or velocity and energy density increase with the decrease of section area in the transmitting process. The vibration locus shapes driven simultaneously by the same frequency and different frequencies are elliptical (or circular) loci and rectangular (or square) loci, respectively. And the characteristics at bonding interface are improved by coupling loci. |
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| Keywords: | ultrasonic bonding coupling vibration transducer ultrasonic longitudinal-complex transverse system |
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