中国焊接(英文版)
中國銲接(英文版)
중국한접(영문판)
CHINA WELDING
2003年
2期
98-102
,共5页
罗震%单平%胡绳荪%廉金瑞%易小林%薛伟峰
囉震%單平%鬍繩蓀%廉金瑞%易小林%薛偉峰
라진%단평%호승손%렴금서%역소림%설위봉
wavelet packet%aluminum alloys spot welding%energy spectrum%identify splash
Nugget splash during aluminum alloys spot welding has a detrimental effect on weld nugget integrity, strength and durability of the welded joints. This investigation is performed to identify nugget splash from voltage signals because these are easily accessible on-line. In the present work, we propose a novel method based on the wavelet packet transform and its energy spectrum for pattern recognition of splash signal. The result demonstrates that this novel method is more accuracy and a useful way of monitoring the spot welding quality.
