Damage Evolution Inspection of Rock Using Digital Speckle Correlation Method (DSCM)

2006 ◽  
pp. 1117-1120 ◽  
Author(s):  
Shao Peng Ma ◽  
Lai Gui Wang ◽  
Guan Chang Jin
Keyword(s):  
Damage Evolution ◽  
Correlation Method ◽  
Digital Speckle Correlation Method ◽  
Speckle Correlation ◽  
Digital Speckle ◽  
Digital Speckle Correlation

Damage Evolution Inspection of Rock Using Digital Speckle Correlation Method (DSCM)

2006 ◽  
Vol 326-328 ◽  
pp. 1117-1120 ◽  
Author(s):  
Shao Peng Ma ◽  
Lai Gui Wang ◽  
Guan Chang Jin
Keyword(s):  
Strain Field ◽  
Damage Evolution ◽  
Surface Deformation ◽  
Correlation Method ◽  
External Loading ◽  
Damage Localization ◽  
Digital Speckle Correlation Method ◽  
Speckle Correlation ◽  
Digital Speckle ◽  
Digital Speckle Correlation

In order to evaluate the damage evolution of rock under external loading, the surface deformation field of a rectangle marble specimen is inspected and analyzed using digital speckle correlation method (DSCM). Experimental results show that the damage evolution of rock undergoes 3 stages: they are uniformly distributed damage, localized damage and catastrophic failure stage. A statistic indicator, standard deviation of the strain field, can be used to quantitatively express the damage localization level.

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