Evaluation of impact damage tolerance in carbon fabric/epoxy-matrix composites by electrical resistance measurement

2012 ◽  
Vol 27 (3) ◽  
pp. 484-488 ◽  
Author(s):  
Zhipeng Li ◽  
Xiaolin Xie ◽  
Zhen Hong ◽  
Chao Lu ◽  
Gaochao Wang
Keyword(s):  
Electrical Resistance ◽  
Epoxy Matrix ◽  
Damage Tolerance ◽  
Impact Damage ◽  
Resistance Measurement ◽  
Matrix Composites ◽  
Electrical Resistance Measurement ◽  
Carbon Fabric

Tensile Damage in Carbon Fabric/Epoxy-Matrix Composites Monitored by Electrical Resistance Measurement Combined with AE Technology

2012 ◽  
Vol 460 ◽  
pp. 140-144 ◽  
Author(s):  
Xiao Lin Xie ◽  
Zhen Hong ◽  
Hong Qing Fan ◽  
Hong Ying Quan ◽  
Zhi Peng Li
Keyword(s):  
Growth Rate ◽  
Electrical Resistance ◽  
Epoxy Matrix ◽  
Tensile Load ◽  
Resistance Measurement ◽  
Matrix Composites ◽  
Electrical Resistance Measurement ◽  
Carbon Fabric ◽  
Ae Energy ◽  
Tensile Damage

The influence of tensile load on electrical resistance and acoustic emission (AE) energy of carbon fabric/epoxy-matrix composites were investigated in this study. The experiment results showed that both electrical resistance and AE energy of carbon fabric/epoxy-matrix composites increased with the increase of tensile load. When tensile damage in composites was brought about, the growth rate of AE energy and electrical resistance increased significantly, and the growth rate of AE energy and electrical resistance can be used as the basis of monitoring tensile damage in composites. In addition, compared with AE technology, the electrical resistance measurement by monitoring tensile damage in composites was simpler, and the results were more reliable too.

Adhesion and Interfaces Involving Polymers, Studied by Electrical Resistance Measurement

2001 ◽  
Vol 710 ◽  
Author(s):  
Zhen Mei ◽  
D.D.L. Chung
Keyword(s):  
Electrical Resistance ◽  
Adhesive Bonding ◽  
Apparent Volume ◽  
Resistance Measurement ◽  
Joint Interface ◽  
Matrix Composites ◽  
Electrical Resistance Measurement ◽  
Thermoplastic Matrix ◽  
Continuous Carbon Fiber ◽  
Volume Resistance

ABSTRACTThe adhesion and interfaces involving polymers were studied by electrical resistance measurement. Adhesive bonding and bond degradation were monitored by measuring the resistance in real time during temperature or stress variation. The resistance measured was either the contact resistance of the joint interface or the apparent volume resistance of one of the two adjoining components in a direction in the plane of the joint interface. The polymers were in the form continuous carbon fiber thermoplastic-matrix composites, due to the importance of these composites for lightweight structures and due to the conductivity of carbon fibers and the necessity of conductivity for electrical resistance measurement. The technique was used for the case of both of the adjoining components being such composites, and for the case of one component being such a composite and the other component being concrete. The concrete case is relevant to the use of the composite to retrofit concrete structures.

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