Abstract

Dielectric analysis has been identified as a key aid for the determination of specific cure parameters that will ultimately affect the performance of a composite component. However a number of problems exist relating to sensor design and interpretation of the dielectric signal in relation to the main cure parameters identified for advanced composite manufacture. This problem is further exacerbated by the inclusion of a protective film to insulate the dielectric sensors from conductive fibres. This paper discusses the utilisation of parallel plate dielectric sensor configuration for reinforced composite materials and the employment of an appropriate protective film for liquid moulding and autoclave cure cycles. Comparison is made with the dielectric signal measured by single surface configuration.