Carbon fibres reinforced composites.Electrical impedance analysis:a gateway to smartness  

作　　者：Philippe Margueres Philippe Olivier Mahamadou Mounkaila Sonia Sassi Thierry Camps 

机构地区：[1]ICA,Universitéde Toulouse,Toulouse,France [2]LAAS,Universitéde Toulouse,Toulouse,France

出　　处：《International Journal of Smart and Nano Materials》2020年第4期417-430,共14页国际智能和纳米材料杂志（英文）

摘　　要：For more than 7 years,our research work is focussed upon the electrical behavior of carbon fiber reinforced composites.Effectively carbon/polymeric matrix laminates can be considered as an electri-cally conductive network(i.e.carbon fibers)embedded in an insulat-ing medium(i.e.the polymeric matrix).Consequently,from an electrical point of view laminated composites have been modelled owing to combinations of electrical resistances(i.e.fibers themselves and the contact points between the fibers)and capacitances(i.e.polymeric matrix).During their manufacturing,composite material such as thermoset matrix composites for instance,undergo various changes in their physical(including electrical and mechanical)prop-erties and in their geometrical characteristics.In fact,in the case of manufacturing processes such as oven curing(vacuum bag),auto-clave curing or heating plate press,beside the chemo-rheologi-cal changes,the laminated parts are the place of a compaction phenomenon inducing changes in fiber volume fraction and thick-nesses.The idea developed in this paper is that since the carbon/polymeric matrix laminate can be considered as an electrical network,it can then be view and used as a sensor for following the material state during the manufacturing process enabling thus defects to be detected and this without any additional sensing material or device.

关 键 词：Electrical impedancemetry cure monitoring CFRP FUNCTIONALIZATION SHM 

分 类 号：TB3[一般工业技术—材料科学与工程]