期刊
COMPOSITES PART B-ENGINEERING
卷 79, 期 -, 页码 631-638出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2015.05.026
关键词
Thermoplastic resin; Environmental degradation; Mechanical testing; Compression molding
资金
- DGE through the MOV'EO competitiveness cluster
Bolted joint tests have been performed in order to evaluate the influence of stamping on the behavior of thermoplastic-based woven-ply laminates subjected to structural loadings under severe service conditions (120 degrees C after hygrothermal aging). Compressive tests have been carried out on carbon fabrics reinforced PolyEtherEtherKetone (PEEK) laminates to investigate fibers buckling due to changes induced by stamping on the non-planar interply structure of woven-ply laminates. As compressive strength decreases by 13% in stamped laminates, it facilitates the plastic buckling of 0 degrees and +/-45 degrees oriented fibers due to compressive loads in bolted joints. Contrary to double-lap joints, stamping does not affect the strength of single-lap joints, as the geometry of single-lap joints is non-symmetric. Stamping modifies the damage mechanisms of PEEK-based laminates under bolt-bearing loadings, such as the failure of stamped bolted joints is dominated by bearing failure mode. (C) 2015 Elsevier Ltd. All rights reserved.
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