TY - GEN
T1 - Measurement of Crack Tip Displacement Field in Desiccating Paste
AU - Arai, Tatsuya
AU - Sakaue, Kenichi
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Desiccation cracking is a phenomenon in which cracks are caused by shrinkage of drying paste material. In the present study, digital image correlation, DIC, is applied to measure the displacement field at the crack tip in a drying paste. In order to obtain magnified images around the crack tip, the control method for crack nucleation position and crack propagation direction is newly developed. Furthermore, stress intensity factors are evaluated by iterative procedure from the measured displacement field. The results show that the stress intensity factors are varied during crack propagation because of kinked crack path ant the fracture toughness depends on the paste thickness even the paste is composed of the same powder. In addition, it is found that the fracture toughness is independent of the crack propagation speed. The dependence of the fracture toughness on the paste thickness is noticeable results to analyze the fracture of desiccation cracking.
AB - Desiccation cracking is a phenomenon in which cracks are caused by shrinkage of drying paste material. In the present study, digital image correlation, DIC, is applied to measure the displacement field at the crack tip in a drying paste. In order to obtain magnified images around the crack tip, the control method for crack nucleation position and crack propagation direction is newly developed. Furthermore, stress intensity factors are evaluated by iterative procedure from the measured displacement field. The results show that the stress intensity factors are varied during crack propagation because of kinked crack path ant the fracture toughness depends on the paste thickness even the paste is composed of the same powder. In addition, it is found that the fracture toughness is independent of the crack propagation speed. The dependence of the fracture toughness on the paste thickness is noticeable results to analyze the fracture of desiccation cracking.
KW - Desiccation cracking
KW - Digital image correlation
KW - Fracture mechanics
KW - Paste material
KW - Stress intensity factor
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U2 - 10.1007/978-3-319-06977-7_9
DO - 10.1007/978-3-319-06977-7_9
M3 - Conference contribution
AN - SCOPUS:84906871271
SN - 9783319069760
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 67
EP - 72
BT - Fracture, Fatigue, Failure, and Damage Evolution - Proceedings of the 2014 Annual Conference on Experimental and Applied Mechanics
PB - Springer New York LLC
T2 - 2014 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
Y2 - 2 June 2014 through 5 June 2014
ER -