期刊
JOURNAL OF MANUFACTURING PROCESSES
卷 60, 期 -, 页码 673-683出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jmapro.2020.10.026
关键词
Forming; Thermoplastic resin; Carbon fibres; Defects
资金
- Engineering and Physical Sciences Research Council (EPSRC) [EP/P006701/1, EP/N509668/1]
- EPSRC [EP/P006701/1] Funding Source: UKRI
The viability of using induction heating to facilitate the wrinkle-free forming of multi-axial pre-consolidated advanced thermoplastic composites over complex geometries is explored. The research focuses on the use of tin as a medium to both heat and lubricate the forming laminate. Initial tests demonstrate the viability of the fundamental ideas of the process; induction heating is used to melt the tin sheet, which is then shown to melt the matrix phase of carbon-nylon composite laminates when stacked in a hybrid composite/tin layup. A novel low-cost reconfigurable multi-step forming tool is used to demonstrate how most of the tin can be squeezed out of the layup prior to consolidation. The multi-step tool can be augmented with segmented tooling to rapidly manufacture composite parts of high geometric complexity. In this investigation, a 'ripple' geometry containing three 'cavities' is used to demonstrate the technique. Tests demonstrated that at least three sheets of inter-laminar tin can be simultaneously melted using the induction heating system. Initial results indicate complex geometries can be formed with minimal wrinkling while removing interlaminar tin.
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