• CN:11-2187/TH
  • ISSN:0577-6686

›› 1995, Vol. 31 ›› Issue (3): 27-31.

• 论文 • 上一篇    下一篇

声发射在焊接质量实时控制中的利用前景研究

蒋鹏飞;John D.Wood   

  1. 镇江船舶学院;美国李海大学
  • 发布日期:1995-05-01

INVESTIGATION OF PROSPECT OF USING ACOUSTIC EMISSION TO REAL-TIME CONTROL WELDING QUALITY

Jiang Pengfei; John D.Wood   

  1. Zhenjiang Shipbuilding Institute Lehigh University, U. S. A.
  • Published:1995-05-01

摘要: 焊接过程的声发射信号是焊接工件内部的一种信号。对TIG焊,MCG焊和CO2焊时声发射的特征进行了研究,发现工件的熔透情况,熔滴过渡的形式和稳定性与声发射特征有紧密联系,声发射的传播与焊接热源对中情况不同有明显区别。所以可用焊接过程的声发射波某些参数作为被控制量进行焊接质量的实时控制。为焊接质量控制提供了新的途径。成功地进行了利用声发射信号的焊缝跟踪控制。

关键词: 焊接质量, 声发射, 实时控制

Abstract: The signals of the acoustic emission during welding are generated within materials being welding. The features of the AE generated during TIG welding, MAG welding and CO2 welding are investigated. Results show that there are closly relationship between features of acoustic emission and penetration as well as metal transfer. Results also show that the propagation of the acoustic emission signals generated by the arc being different positions related to the top of the gap are abviously different. Therefore, the parameters of the acousic emission waves generated by welding can be used to real-time control welding quality. A new way to real-time control welding quality is offered. Author successfully performed the welding both straight and curivlineal weld seam tracking controller developed by author.

Key words: Acoustic emission, Real-time control, Welding quality