Study on mechanical properties and damage mechanism of 3D printed carbon fiber reinforced composite laminates
Source abstract
Abstract
Abstract The mechanical properties and damage mechanism of 3D printed carbon fiber reinforced composite laminates were studied. Through the combination of experiment, theoretical analysis and numerical simulation, the mechanical response and failure mode under tensile and three-point bending loads were systematically discussed. The experimental results show that the tensile failure modes of 3D printed carbon fiber reinforced composite laminates are fiber fracture, resin matrix section fracture and fiber pull-out when subjected to tensile load. Under the three-point bending load, the damage gradually expands from the bottom fiber layer to the neutral layer, and the failure modes are matrix crack, interlayer separation and fiber fracture. The tensile strength of the material can reach 46.29 MPa, and the bending strength is 70.13 MPa, the prediction accuracies of maximum tensile load, bending strength and bending modulus are 94 %, 97 % and 97 %. Based on the Hashin failure criterion, a damage model was established to accurately predict the mechanical response and damage mechanism under tension and three-point bending. The results of this study can provide experimental and numerical basis for the design of high-strength lightweight structures, and provide reference for the application of additive manufacturing composites in aerospace, automotive and high-performance engineering structures.
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Research context
OpenAlex topics: Mechanical Behavior of Composites · Additive Manufacturing and 3D Printing Technologies · Cellular and Composite Structures
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Affiliations
School of Mechanical Engineering, Tianjin Sino-German University of Applied Sciences , No. 2, Yashen Road, Jinnan District, 300350 , Tianjin , China
Tianjin Aerospace Reliability Technology Co., Ltd. , No. 9 Zhongbei No. 3 Street, West District of Tianjin Economic-Technological Development Area, Binhai New Area , Tianjin , China
Zhejiang Beiduozhi Wooden Toys Co., Ltd., Yuhai Preschool Education Wooden Toys Industrial Park , Building 20, Block B, Chengzhao Township, Jingning She Autonomous County , Lishui City , Zhejiang Province , China
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