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RETRACTED ARTICLE: Self-Diagnosis of GFRP composites containing carbon powder and fiber as electrically conductive phases

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This article was retracted on 26 February 2018

Abstract

The electrical characteristics of glass fiber reinforced plastic (GFRP) composites have been investigated in order to incorporate a self-diagnosis function suitable for monitoring the health of structural materials. The electrical conductivity was introduced by adding carbon powder (CP) or carbon fibers (CF) into GFRP rods and sheets. The self-diagnosis ability of the composites was evaluated by measuring the change in electrical resistance as a function of stress (or strain) in tensile tests. The resistance of CFGFRP changed only slightly at small strain levels and increased nonlinearly with the applied stress due to cutting of the fibers at higher levels. CPGFRP showed high sensitivity to stress and the resistance changed linearly over a wide strain range. During cyclic loading tests, a residual resistance was also observed in CPGFRP composites after unloading. The residual resistance increased with maximum applied strain, showing that it can be used as an indicator of previously applied strain or stress. It is concluded that the CPGFRP composite is a promising material for simple diagnosis of dynamic damage and cumulative strain.

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Authors and Affiliations

  1. Division of Metallurgical and Materials, and Chemical Engineering, Dong-A University, 840 Hadan-2-dong, Saha-gu, 604-714, Busan, South Korea

    Soon-Gi Shin

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  1. Soon-Gi Shin
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Additional information

This article [1] has been retracted at the request of the Editor-in-Chief. Concerns were raised regarding substantial duplications with previous articles published in other journals in which S.-G. Shin is one of the co-authors. After a thorough analysis we conclude that the concerns are valid. The article contains sections that substantially overlap with the following published article [2] (amongst others). S.-G. Shin has not responded to correspondence from the Editor about this retraction.

1. “Self-Diagnosis of GFRP Composites Containing Carbon Powder and Fiber as Electrically Conductive Phases” S.-G. Shin, Mat. Mater. Int., Vol. 7, Issue 6, pp.605-611 (2001).

2. “Self-diagnosis function of FRP containing electrically conductive phase” Y. Okuhara, S.-G. Shin, H. Matsubara, H. Yanagida, and N. Takeda, Proc. SPIE 3986, Smart Structures and Materials 2000: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, p.191, Society of Photo Optical, USA (2000).

An erratum to this article is available at http://dx.doi.org/10.1007/s12540-018-0049-z.

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Shin, SG. RETRACTED ARTICLE: Self-Diagnosis of GFRP composites containing carbon powder and fiber as electrically conductive phases. Met. Mater. Int. 7, 605–611 (2001). https://doi.org/10.1007/BF03179259

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  • DOI: https://doi.org/10.1007/BF03179259

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