D.Q. Li
,
D. Li
,
L.H. Nan and X.T. Tian National Key Laboratory of Advanced Welding Production Technology
,
HIT
,
Harbin 150001
,
China
金属学报(英文版)
In order to effectively control the stress and distortion which produced in welding process, the dynamic change laws of displacement field is the most important factor. The characteristics of the welding dynamic displacement field is high temperature, high strain velocity, thus ordinary methods such as resistance strain gauge or Moiré method can not be used for the measurement of the zone of high temperature. Speckle interference method has the merits of non-contact, resistance to the disturbance of impure lights, high accuracy of measurement (half of wavelength).The paper represents the measurement of dynamic displacement field of argon-arcspot welding, by which it shows that the method of speckle interference is feasible for the measurement of welding dynamic displacement.
关键词:
welding dynamic displacement field
,
null
,
null
