Deformation and interlaminar crack propagation sensing in carbon fiber composites using electrical resistance measurement

2019 ◽  
Vol 216 ◽  
pp. 142-150 ◽  
Author(s):  
Hyung Doh Roh ◽  
Soo-Young Lee ◽  
Eonyeon Jo ◽  
Hyegyu Kim ◽  
Wooseok Ji ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Crack Propagation ◽  
Electrical Resistance ◽  
Fiber Composites ◽  
Resistance Measurement ◽  
Carbon Fiber Composites ◽  
Electrical Resistance Measurement ◽  
Interlaminar Crack

Early Fatigue Damage In Carbon Fiber Composites Observed By Electrical Resistance Measurement

1997 ◽  
Vol 503 ◽  
Author(s):  
Shoukai Wang ◽  
Xiaoping Shui ◽  
Xuli Fu ◽  
D. D. L. Chung
Keyword(s):  
Carbon Fiber ◽  
Fatigue Damage ◽  
Electrical Resistance ◽  
Carbon Matrix ◽  
Fiber Composites ◽  
Resistance Measurement ◽  
Cement Matrix ◽  
Carbon Fiber Composites ◽  
Electrical Resistance Measurement ◽  
Matrix Damage

ABSTRACTEarly fatigue damage during the first tenth (or less) of the fatigue life was observed in carbon fiber composites by DC electrical resistance measurement. The damage was most severe in the first loading cycle and the incremental damage in each subsequent cycle diminished cycle by cycle. For the continuous carbon fiber carbon-matrix composite, the resistance increased irreversibly during early fatigue due to matrix damage and possibly fiber fracture as well. For the short carbon fiber polymer-matrix and cement-matrix composites, the resistance decreased irreversibly during early fatigue due to matrix damage near the junction of adjacent fibers and the resulting increase in the chance that adjacent fibers touched one another.

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