A Comparative Study on the Mechanical Properties of Open-Hole Carbon Fiber-Reinforced Thermoplastic and Thermosetting Composite Materials.

Autor: Han L; College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China.; AVIC Harbin Aircraft Industry Croup Co., Ltd., Harbin 150066, China., Song Y; AVIC Harbin Aircraft Industry Croup Co., Ltd., Harbin 150066, China., Qi H; College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China., Yang JS; College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China.; Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266000, China., Li S; Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266000, China., Liu PA; College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China.
Jazyk: angličtina
Zdroj: Polymers [Polymers (Basel)] 2023 Nov 20; Vol. 15 (22). Date of Electronic Publication: 2023 Nov 20.
DOI: 10.3390/polym15224468
Abstrakt: In this paper, the damage initiation/propagation mechanisms and failure modes of open-hole carbon fiber-reinforced thermoplastic composites and thermosetting composites with tension, compression, and bearing loads are investigated, respectively, by experiments and finite element simulations. The experimental evaluations are performed on the specimens using the Combined Loading Compression (CLC) test method, the tensile test method, and the single-shear test method. The differences in macroscopic damage initiation, evolution mode, and damage characteristics between thermoplastic composite materials and thermosetting composite material open-hole structures are obtained and analyzed under compressive load. Based on scanning electron microscope SEM images, a comparative analysis is conducted on the micro-failure modes of fibers, matrices, and fiber/matrix interfaces in the open-hole structures of thermoplastic and thermosetting composites under compressive load. The differences between thermoplastic and thermosetting composites were analyzed from the micro-failure mechanism. Finally, based on continuum damage mechanics (CDM), a damage model is also developed for predicting the initiation and propagation of damage in thermoplastic composites. The model, which can capture fiber breakage and matrix crack, as well as the nonlinear response, is used to conduct virtual compression tests, tensile test, and single-shear test, respectively. Numerical simulation results are compared with the extracted experimental results. The displacement-load curve and failure modes match the experimental result, which indicates that the finite element model has good reliability.
Competing Interests: Author Yao Song was employed by the company AVIC Harbin Aircraft Industry Group Co. Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Databáze: MEDLINE
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