Damage detection via Joule effect for multidirectional carbon fiber reinforced composites

The electrical conductivity of a thin multidirectional carbon fiber reinforced composite laminates can be expressed by an equivalent symmetric second order tensor. Any change of the microstructure of the composite laminate due to an interlaminar damage locally changes the electrical conductivity tensor of the medium. Applying electric potential difference, the temperature of the medium rises, due to the Joule effect. In the presence of interlaminar damage, the developed temperature field changes locally. Following the coupled electrical/thermal solution of the problem, the mechanism of the phenomenon is elucidated and validated against experimental results by comparing the measured to calculated temperature field.

[1]  Mahmood Husein Datoo,et al.  Mechanics of Fibrous Composites , 1991 .

[2]  E. M. Lifshitz,et al.  Electrodynamics of continuous media , 1961 .

[3]  I. Kalnin,et al.  Unusual electrical resistivity behavior of carbon fibers , 1983 .

[4]  Musa R. Kamal,et al.  Estimation of the volume resistivity of electrically conductive composites , 1997 .

[5]  C. Sotak,et al.  MEASURED ELECTRICAL CONDUCTIVITIES OF CARBON-FIBER COMPOSITE MATERIALS : EFFECTS ON NUCLEAR MAGNETIC RESONANCE IMAGING , 1990 .

[6]  Amir Galehdar,et al.  The effect of ply orientation on the performance of antennas in or on carbon fiber composites , 2011 .

[7]  J H Greenwood,et al.  The anisotropic electrical resistivity of a carbon fibre reinforced plastic disc and its use as a transducer , 1975 .

[8]  V. Kostopoulos,et al.  Resistive heating of multidirectional and unidirectional dry carbon fibre preforms , 2012 .

[9]  V. Kostopoulos,et al.  Prediction and experimental validation of the electrical conductivity of dry carbon fiber unidirectional layers , 2011 .

[10]  C. A. Moyer,et al.  Electrical conductivity of graphite fiber-epoxy resin composites , 1981 .

[11]  Karl Schulte,et al.  Non-destructive testing of FRP by d.c. and a.c. electrical methods , 2001 .

[12]  Akira Todoroki,et al.  Impact-damage visualization in CFRP by resistive heating: Development of a new detection method for indentations caused by impact loads , 2012 .

[13]  Donald J. Leo,et al.  Consolidation of U-Nyte® Epoxy-Coated Carbon-Fiber Composites via Temperature-Controlled Resistive Heating , 2008 .

[14]  Antonio Miravete,et al.  Multi-physics damage sensing in nano-engineered structural composites , 2011, Nanotechnology.

[15]  V. Kostopoulos,et al.  Numerical investigation and experimental verification of the Joule heating effect of polyacrylonitrile-based carbon fiber tows under high vacuum conditions , 2012 .

[16]  H. Hahn,et al.  Investigation of temperature dependency of electrical resistance changes for structural management of graphite/polymer composite , 2011 .