An Artificial Neural Network Based Damage Detection Scheme for Electrically Conductive Composite Structures

Anderson, Todd A.; Lemoine, Grady I.; Ambur, Damodar R.

doi:10.2514/6.2003-1997

Cited by 16 publications

(9 citation statements)

References 11 publications

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“…The effect of r-ratio, which is a fraction of conductivities of fiber direction and transverse direction, on the estimation accuracy of the method was shown. T. A. Anderson et al (53) have investigated damage detection in CFRP plates. They performed damage identification analytically assuming a two-dimensional problem.…”

Section: Electric Potential Change Methodsmentioning

confidence: 99%

Strain and Damage Monitoring of CFRP Laminates by Means of Electrical Resistance Measurement

Todoroki

Ueda

Hirano

2007

JMMP

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This review discusses the use of electrical resistance and potential change in various methods for monitoring Carbon Fiber Reinforced Plastic (CFRP) composites. CFRP composites have electrical conductivity as they contain carbon fibers. When fibers and fiber networks break within the structure its electrical resistance changes; the electrical resistance of carbon fiber changes with the applied strain just as physical resistance varies in a conventional strain gage. Using these changes in electrical resistance damage to CFRP composites can be monitored and applied strain measured without implementation of additional sensors. This makes CFRP a self-sensing material. The electrical resistance change method has been applied for decades to detect carbon fiber breakages. As regards the measurement of applied strain, there is divergence of opinion amongst researchers about the piezoresistance of CFRP. This discrepancy is discussed in detail in this review. For monitoring damage such as delamination cracks, the electrical resistance change method can accurately estimate the location and dimension of the damage. This review also discusses electrical potential change and eddy current methods for monitoring CFRP composites.

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Section: Electric Potential Change Methodsmentioning

confidence: 99%

Strain and Damage Monitoring of CFRP Laminates by Means of Electrical Resistance Measurement

Todoroki

Ueda

Hirano

2007

JMMP

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“…Calculated potential distributions on the outer surface could then be compared with those measured experimentally. Limited studies of this type had been conducted previously [14,15]. The present analysis aimed to study the effect on the electrical potential distribution of different size delaminations, positioned between different layers within the laminate.…”

Section: Finite Element Simulations Of Potential Fieldsmentioning

confidence: 99%

Detection of impact damage in CFRP laminates by means of electrical potential techniques

Angelidis

Irving

2007

Composites Science and Technology

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“…Ueda and Todoroki have demonstrated a new multi-probe that uses dual electric current charges to improve the large error at the middle of the target CFRP beams (Ueda and Todoroki, 2006). Anderson et al (2003) have proposed a new multiprobe method that all of electrodes are placed circularly on the plate surface near the edges.…”

Section: Damage Monitoringmentioning

confidence: 99%

“…These successful results enable us to monitor various information of the target CFRP laminate by means of the electrical resistance changes in many applications. Anderson et al (2003) have proposed a new electrical potential change method using circularly placed multiple electrodes on the outer circumferential surface of the target CFRP plate. Ueda proposed a two-way electrical potential change method for CFRP beams (Ueda and Todoroki, 2006) using multi-probe electrical method.…”

Section: Introductionmentioning

confidence: 99%

Delamination Monitoring Analysis of CFRP Structures using Multi-Probe Electrical Method

Todoroki

2007

Journal of Intelligent Material Systems and Structures

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Since a delamination crack is invisible or difficult to detect visually, the delamination causes low reliability of Carbon-Fiber-Reinforced-Polymer (CFRP) for primary structures. To improve the low reliability, smart systems of delamination identifications in-service are desired. Recently, many researchers have employed an Electrical Resistance Change Method (ERCM) to detect the internal damages of CFRP laminates. The ERCM does not require expensive instruments. Author's group has already experimentally investigated the applicability of the ERCM for strain monitoring, delamination crack monitoring and matrix crack monitoring. In the present article, therefore, these results performed in the previous papers are briefly explained. These successful results enable us to monitor a lot of information of the CFRP laminates by means of the electrical resistance changes in many applications, although a lot of electrodes are required to be mounted. To reduce the number of electrodes, a new electrical potential method for the CFRP plate is proposed here, which enables us to reduce the number of electrodes. The present article compared the new method to the method proposed by Anderson. FEM analyses are performed to confirm the applicability of the new method.

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An Artificial Neural Network Based Damage Detection Scheme for Electrically Conductive Composite Structures

Cited by 16 publications

References 11 publications

Strain and Damage Monitoring of CFRP Laminates by Means of Electrical Resistance Measurement

Strain and Damage Monitoring of CFRP Laminates by Means of Electrical Resistance Measurement

Detection of impact damage in CFRP laminates by means of electrical potential techniques

Delamination Monitoring Analysis of CFRP Structures using Multi-Probe Electrical Method

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