Low Frequency Conductivity of Unidirectional Graphite/Epoxy Composite Samples

Scruggs, Leonard A.; Gajda, Walter J.

doi:10.1109/isemc.1977.7567232

Cited by 4 publications

(5 citation statements)

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“…Ifrist importantly, numerical values for the diffusion coefficients as a function of temperaturp for varlnn, impn..r 4 …”

Section: ) Elements Of Microscopic Fiber Conductivity and Impurity Dmentioning

confidence: 99%

“…Temperatur, agitation, controlling of the pH level, anti-pitting reagents, optimal anode-cathode current densities and low contm 4 nation are all of importance.…”

Section: Appendix Amentioning

confidence: 99%

“…Previous work 4 indicates that low frequency conductivity depends on fiber conductivity and fiber-to-fiber contact. This leads to the possibility of increasing fiber conductivity by doping techniques.…”

mentioning

confidence: 94%

“…The measured current-voltage curves were not necessarily truly indicat 4 ve of current through the fibers only. Rectifying effects were still in evidence and another contacting procedure was needed before a conductivity could be uniquely assigned to the chemically vapor deposited boron.…”

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confidence: 97%

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A Fundamental Study of the Electromagnetic Properties of Advanced Composite Materials

Gajda¹

1978

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“…Ifrist importantly, numerical values for the diffusion coefficients as a function of temperaturp for varlnn, impn..r 4 …”

Section: ) Elements Of Microscopic Fiber Conductivity and Impurity Dmentioning

confidence: 99%

“…Temperatur, agitation, controlling of the pH level, anti-pitting reagents, optimal anode-cathode current densities and low contm 4 nation are all of importance.…”

Section: Appendix Amentioning

confidence: 99%

mentioning

confidence: 94%

mentioning

confidence: 97%

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A Fundamental Study of the Electromagnetic Properties of Advanced Composite Materials

Gajda¹

1978

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“…Previous work has focused on the basic electrical properties of CFRP laminates for electromagnetic shielding purposes and the prevention of electrostatic charging [2,3]. The detection of damage by electrical resistance measurements in unidirectional laminates under tensile stress was reported by Schulte and Baron [4].…”

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confidence: 99%

Sensing with Carbon Fibres in Polymer Composites

Schulte

2002

Journal of the Society of Materials Science, Japan

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Carbon-fibre-reinforced polymer (CFRP) composites derive their excellent mechanical strength, stiffness and electrical conductivity from carbon fibres. The mechanical deformation and electrical resistance are coupled in these fibres that make them inherently sensors. Thus CFRPs can be considered as a self-monitoring material without any need for additional sensing elements. However, for this to become reality the conductivity map of the entire structure needs to be constructed and the relationships between the conductivity and various use-and damage-related variables need to be established. Experimental results demonstrate that internal damage, such as fibre fracture and delamination, decreases the conductivity of composite laminates. In general, the information about the damage size and position can be obtained by utilising electrical impedance tomography (EIT)..

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