Warpage investigation of carbon/PEEK discontinuous long fibre thin panels
Source abstract
Abstract
Discontinuous Long Fibre (DLF) composites, composed of randomly-oriented strands of chopped unidirectional pre-impregnated tape, have been used in the aerospace industry to produce intricate, net-shape parts with complex features – replacing complicated metallic brackets with single, lightweight parts. Carbon/PEEK DLF composites suffer from warpage problems driven by several factors including their high processing temperatures and semi-crystalline matrix shrinkage. This work aims to characterize warpage of thin-gauge parts and pursue mitigation. Results showed that the magnitude of warpage reduces with decreasing strand size and increasing thickness. At thicknesses greater than 2 mm, warpage appeared relatively stable. The introduction of ribbed features was explored as a mean of mitigating warpage by increasing part stiffness. No significant impact on the magnitude of warpage was observed within parts. However, the addition of ribs helped to control the warped shape of the part.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Mechanical Behavior of Composites · 3D IC and TSV technologies · Electronic Packaging and Soldering Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical Engineering, McGill University, Canada
Funding
Dema Aeronautics · Pratt and Whitey Canada Corp. · Consortium for Research and Innovation in Aerospace in Quebec · Hutchinson Aerospace & Industry Ltd · Consortium for Aerospace Research and Innovation in Canada
References (34)
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