Forming-behavior characterization of cross-ply carbon fiber/PA6 laminates using the bias-extension test

被引：3

作者：

Zomer, Daniele ^{[1
,2
,3
]}

Simaafrookhteh, Sepehr ^{[1
,4
,5
,7
]}

Vanclooster, Kristof ^{[6
]}

Dorigato, Andrea ^{[2
,3
]}

Ivens, Jan ^{[1
,4
]}

机构：

[1] Katholieke Univ Leuven, Dept Mat Engn, Leuven, Belgium

[2] Univ Trento, Dept Ind Engn, Trento, Italy

[3] Univ Trento, INSTM Res Unit, Trento, Italy

[4] Katholieke Univ Leuven, Dept Mat Engn, Campus De Nayer, St Katelijne Waver, Belgium

[5] SIM M3 Program, Technol Pk 48, B-9052 Zwijnaarde, Belgium

[6] Rein4ced NV, Diependaalweg 4A, B-3020 Winksele, Belgium

[7] Dept Mat Engn, Kasteelpk Arenberg 44 Box 2450, B-3001 Leuven, Belgium

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2023年 / 168卷

关键词：

Thermoforming; UD tape; Bias-extension test; Thermoplastic resin; TAPE PLACEMENT; PICTURE-FRAME; SHEAR CHARACTERIZATION; THERMOPLASTIC LAMINA; COMPOSITES; SIMULATION; NORMALIZATION; TEMPERATURE;

D O I：

10.1016/j.compositesa.2023.107436

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work focuses on the in-plane shear behavior of carbon fiber-reinforced polyamide 6 cross-ply laminates. Bias-extension tests are performed at different temperatures and deformation rates. Forming behavior is compared with the prediction of the pin-jointed net (PJN) idealization, and the effects of temperature and deformation rate are investigated. A key objective is to estimate the locking angle of the material. The results show that the shear behavior is comparable to the one of woven fabrics for limited deformations, with the PJN holding up to a shear angle of 30 degrees. The load required to deform the specimens is higher for lower temperatures or faster deformation rates, and the locking angle of the material is 45 degrees. After locking, fiber slippage and compaction are significant rather than inter-ply fiber rotation prior to the locking angle. Moreover, the defor-mation localization shows that heterogeneities in the shear pattern are more pronounced at the lower defor-mation rates. Although the average shear angle measured in the bias-extension test is not affected by the deformation rate, the localization of shear deformation at lower deformation rates causes a higher variability of the shear angle within the test.

引用

页数：17