Comparative analysis of the deconsolidation behavior of CF/PEEK laminates and CF/PEEK tapes during laser-assisted automated fiber placement

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-02-03 DOI:10.1016/j.compstruct.2025.118924

Qiuyu Miao , Kaojie Yue , Dongjiang Wu , Xianfeng Wang

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引用次数: 0

Abstract

Deconsolidation behavior of thermoplastic composites when subjected to reheating has been considered one of the main causes of interlaminar voids in laminates manufactured by automated fiber placement (AFP), which significantly impairs the mechanical properties. This paper studied the deconsolidation behavior of CF/PEEK laminates (representing the substrate in the AFP) and CF/PEEK tapes during the heating phase of laser-assisted AFP (LAFP). In-situ characterization of out-of-plane displacement and temperature was used to understand the temporal and spatial behavior. It turned out that both CF/PEEK laminates and tapes deconsolidate during the heating phase, but tapes present a more pronounced deconsolidation behavior with intralaminar voids, fibers out of surfaces, severe macro-deformation and residual displacement. The main reason for the deconsolidation is the release of residual stress stored in tapes and laminates. Deconsolidation behavior of laminates can be eliminated by roller consolidation in LAFP process and that of tapes can be inhibited by releasing tape’s initial residual stress before heating phase. This work could provide a novel understanding of the deconsolidation behavior of thermoplastic laminates and tapes during LAFP and furthermore provide guidance to improve the quality of LAFP-manufactured parts.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.