The Digital Image Correlation Technique Applied to Hole Drilling Residual Stress Measurement

2014 ◽  
Author(s):  
Yi-Hsin Chen ◽  
Xu Chen ◽  
Nan Xu ◽  
Lianxiang Yang
Keyword(s):  
Residual Stress ◽  
Digital Image Correlation ◽  
Digital Image ◽  
Stress Measurement ◽  
Image Correlation ◽  
Residual Stress Measurement ◽  
Hole Drilling ◽  
Correlation Technique ◽  
Digital Image Correlation Technique

scholarly journals Material Test on Strain Fracture and Crack Opening Displacement Based on Digital Image Correlation Method

2016 ◽  
Vol 62 (3) ◽  
pp. 3-22
Author(s):  
J. Bian ◽  
Zx. Ge
Keyword(s):  
Residual Stress ◽  
Digital Image Correlation ◽  
Digital Image ◽  
Fracture Property ◽  
Stress Measurement ◽  
Crack Opening ◽  
Welding Residual Stress ◽  
Image Correlation ◽  
Correlation Technique ◽  
Opening Displacement

Abstract As a machining technology, welding can cause serious accidents by overloading or operation mistakes. Through analyzing the causes of various welding accidents, we found that the major cause for damage imposed after welding parts are loaded is the fracture of materials. Therefore, studying the influence of welding residual stress on the fracture property of materials is of great significance. This paper applied the digital image correlation technique to study the fracture property of welding parts under the influence of welding residual stress. In addition, standard parts and welding parts were selected to carry out a contrast experiment. Room temperature tensile tests were performed on both standard parts and test pieces after residual stress measurement. Using displacement field and strain field data obtained through VIC-2D software, the stress intensity factor around the crack tip of each specimen under the conditions of small load was calculated and corresponding analysis was carried out.

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