Study on Determination Method of Rock Tensile Modulus of Brazilian Disc Splitting Test Based on Digital Speckle Correlation Method (DSCM)

2021 ◽  
Author(s):  
Tongbin Zhao ◽  
Wei Zhang ◽  
Minglu Xing ◽  
Yue Qiu ◽  
Jinpeng Yao
Keyword(s):  
Tensile Modulus ◽  
Correlation Method ◽  
Determination Method ◽  
Brazilian Disc ◽  
Digital Speckle Correlation Method ◽  
Speckle Correlation ◽  
Splitting Test ◽  
Digital Speckle ◽  
Digital Speckle Correlation

Application of Digital Speckle Correlation Method in Observation of Conrete Micro-Crack Damage

2014 ◽  
Vol 578-579 ◽  
pp. 1290-1294
Author(s):  
Zhen Qiang Wang ◽  
Yan Liu
Keyword(s):  
Crack Opening ◽  
Correlation Method ◽  
Damage Parameter ◽  
Opening Displacement ◽  
Damage Area ◽  
Digital Speckle Correlation Method ◽  
Speckle Correlation ◽  
Splitting Test ◽  
Digital Speckle ◽  
Digital Speckle Correlation

The splitting test for concrete specimens in four different dimensions were carried out in order to build the relative even micro-crack damage fields. The real-time whole-field displacements of concrete surface were measured omni-directionally by DSCM(Digital Speckle Correlation Method). Through analyzing the obtained experimental data, two kinds of micro-crack damage parameter are established :one is damage area based on the MCOD (Micro-Crack Opening Displacement) and another is damage variable based on the weighting-damping elastic modulus, which provides a new index and method for characterization of concrete micro-crack damage.

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