Health monitoring in continuous glass fibre reinforced thermoplastics: Manufacturing and application of interphase sensors based on carbon nanotubes

Abstract

To cite this version:J. Rausch, E. Mäder. Health monitoring in continuous glass fibre reinforced thermoplastics: Manufacturing and application of interphase sensors based on carbon nanotubes. Composites Science and Technology, Elsevier, 2010, 70 (11), pp.1589. 10.1016/j.compscitech.2010 Accepted Manuscript This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ACCEPTED MANUSCRIPT AbstractIn this study, a new approach for health monitoring of GF reinforced composites is presented by incorporating percolated carbon nanotubes (CNTs) into the composites interphase. This is achieved applying CNT-filled coatings to glass fibres (GF). Taking advantage of the electrical properties of CNTs, this allows a highly localized monitoring of the composites interphase.The approach is largely independent on matrix material and can be applied to thermoplastic or thermoset resin matrix materials with minor adjustments. The resistance of CNT-coated GF yarns shows a linear dependence on the yarn length and depends on the CNT weight fraction of the coating, as well as on the amount of coating on the GF yarn. Performing tensile tests in combination with simultaneous resistance measurements on CNT-coated GF yarns embedded in a polypropylene matrix, the interphase behaviour during mechanical loading is monitored, providing information on this specific area. This allows relating interphase failure or GF breakage to the resistance data and demonstrates the potential of this approach for health monitoring of GF reinforced composites.

Systematically varied interfaces of continuously reinforced glass fibre/polypropylene composites: Comparative evaluation of relevant interfacial aspects

“…Besides conventional sizing formulations, recent studies report on the incorporation of nanoparticles into aqueous sizings or coatings for enhanced fibre matrix adhesion [11][12][13] or functionalisation of the interphase by creating diffusion barriers [14]. Moreover, nanoparticles, namely carbon nanotubes, have been used for interphasial strain sensing [15][16][17][18]. Upon consolidation of the composites, interdiffusion of the sizing constituents with the matrix polymer takes place, resulting in graded physical properties within a transition zone, i.e.…”

Study on Manufacturing Technology of Coating Yarns for Awning Fabrics

“…와 센서, IT분야에서 융복합소재로 사용되는 CNT와 Carbon을 사용한 코팅연구 [3][4][5][6] 에 관한 내용 등이 발표되었다. 한편 면사에 기능성 코팅을 하여 기능성 의류에 적용한 연구 7,8) 가 있으며 그 외 밧 데리 방전을 줄이기 위한 코팅사의 응용 9) , PET에 PEDOT(poly(3,4-ethylene dioxythiophene))를 코팅하여 전도성을 향상시키기 위한 연구 10) , carbon과 유리섬유 코팅사의 열저항성 향상에 관한 연구 11) , 그리고 아 라미드에 금(gold)코팅을 하여 전도성을 향상시킨 연구 12) 등이 최근에 연구가 되었다.…”

“…한편 smart textile 재료로서 CNT를 코팅한 연구 [3][4][5][6] 에서는 센서 재료로써 사용가능성을 확인 하였 으며 면사의 코팅에 친수성고분자인 PVP(poly(N-Vinyl -2-pyrrolidone))를 사용하여 사의 역학 특성치를 44% 증가시킨 연구…”

Health monitoring in continuous glass fibre reinforced thermoplastics: Tailored sensitivity and cyclic loading of CNT-based interphase sensors

“…In our previous study [30], we presented a novel approach for interphase sensing by modifying GF-coatings with CNTs. The study was mainly concerned with the characterisation of the CNT-coated GF-yarns as well as the discussion of the challenges of this approach due to imperfect GF coverage by the CNT-coating.…”