Experimental verification of models for induction heating of continuous‐carbon‐fiber composites

Abstract

Heating of continuous‐carbon‐fiber‐reinforced polymers (CFRPs) by the application of an alternating magnetic field has been shown to be due to dielectric losses in the polymer. Models that predict thermal generation in these composites are input to a finite element heat transfer analysis, providing the predicted transient thermal profile in the plane of the laminate. The validity of the global thermal generation model is established through an experimental test matrix in which various specimen configurations are evaluated and compared with theoretical predictions of transient surface temperatures.

A study on the induction heating of carbon fiber reinforced thermoplastic composites

“…Fink et al [8,9] proposed that the dominant heating mechanism is dielectric polymer heating at the regions (junctions) where bers of adjacent plies overlap. The contention was that the bers of adjacent plies are not in complete contact, but separated by a small polymer gap.…”

On the impact response of electrified carbon fiber polymer matrix composites: Effects of electric current intensity and duration

“…In [11,12] heating of conductive fiber composites was investigated both experimentally and theoretically in the context of induction processing of composites. The focus of these studies was exclusively on the eddy current-induced thermal effects in composites immersed in an alternating magnetic field.…”

Control of the through-thickness temperature distribution in carbon composite aerospace parts during induction welding

“…Rudolf et al 2 , Moser, 3 and Miller et al 8 did not research the through-thickness temperature distribution as a function of the laminate thickness and their results did not show a strong increase in the temperature by a reduction of the thickness. The research of Fink et al 11 also did not show a strong increase in the temperature. To connect the results presented in literature Vrana’s equation (9) is adapted by dividing it in two summands.…”

“…3 Many different theories about the temperature distribution have been published. 2,7,8 –12 The theories of Rudolf et al, 2 Moser, 3 Miller et al, 8 Kim et al 9 , Yarlagadda 10 , and Fink et al 11,12 consider the temperature distribution in carbon fiber–reinforced thermoplastics. Vrana’s studies 7 refer to nickel alloys and Iwashita et al’s studies 13 examine copper foils.…”