Journal of Shanghai Jiaotong University ›› 2015, Vol. 49 ›› Issue (03): 323-325.

• Metallography and Metallurgical Technology • Previous Articles     Next Articles

Arc Sound Acquisition and Analysis of Hyperbaric Underwater MIG Welding

LI Weiqiang1,ZHU Jialei1,JIAO Xiangdong1,QIAO Xi1,JIA Cunfeng2,MA Zhengzhu1   

  1. (1.School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; 2.Mechanical Engineering and Applied Electronics Technology Institute, Beijing University of Technology, Beijing 100124, China)
  • Received:2014-05-20 Online:2015-03-30 Published:2015-03-30

Abstract:

Abstract: The hardware of arc sound acquisition system in hyperbaric underwater MIG welding was designed, the influence of different pressure to voice signal was studied, and the microphone was calibrated according to different pressures. Based on the LabVIEW software programming, the arc sound signal, welding current and arc voltage during welding were asynchronously acquired and the signal feature of arc sound in the different pressures was analyzed both in time domain and frequency domain, which lay the foundation for the application of arc sound signal in hyperbaric underwater MIG welding quality control.

Key words:  hyperbaric metal-inert gas(MIG) welding, microphone calibration, synchronous acquisition, feature analysis

CLC Number: