Investigation of fracture behaviour of hybrid composite materials under compact tension

被引:1
作者
Esleman, Esmael Adem [1 ]
Batu, Temesgen [1 ]
Onal, Gurol [2 ]
Wu, Qian [3 ]
机构
[1] Adama Sci & Technol Univ, Coll Mech Chem & Mat Engn, Dept Mech Engn, Adama, Ethiopia
[2] Konya Tech Univ, Fac Engn & Nat Sci, Dept Mech Engn, TR-42250 Konya, Turkiye
[3] UESTC, Sch Aeronaut & Astronaut, Dept Mech Engn, Chengdu, Sichuan, Peoples R China
关键词
Fracture toughness; Hybrid composites; Energy release rate; Crack propagation; MECHANICAL-PROPERTIES; GLASS-FIBER; BASALT; CONCRETE;
D O I
10.1016/j.rineng.2025.104616
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study examines the fracture behavior of hybrid composite materials by analyzing the relationship between stress intensity factors, crack opening displacement, and critical energy release rates for compact tension specimens. Five types of composite laminates-Basalt/Epoxy (BE), Carbon/Epoxy (CE), Glass/Epoxy (GE), BasaltGlass/Epoxy (BGE), and Basalt-Carbon-Glass/Epoxy (BCGE)-were fabricated using the Vacuum Assisted Resin Transfer Molding (VARTM) method. Compact tension (CT) tests were conducted using a Universal Testing Machine (Instron 8801), recording load and displacement data to calculate fracture toughness and energy release rates. The results revealed that hybrid composites (BGE and BCGE) showed better fracture toughness (29.73 MPa \/ and 30.95 MPa m \/ m , respectively), energy dissipation (220 kJ/m2 and 230 kJ/m2, respectively), and crack resistance than mono-fiber composites (GE). However, the BE composite exhibits the highest toughness (KQ of 37.7 MPa\/) and critical energy release rate (GQ of about 260 kJ/m2) among the mono-fiber composites, m attributed to strong fiber-matrix bonding. The GE composite has the lowest value of critical energy release rate of 150 kJ/m2 and stress intensity factor of 17.02 MPa\/m, Indicating that glass fibers have a lower capability to dissipate energy during crack propagation. The crack propagation behavior differed among the composites, with BE, CE, and GE showing linear crack paths, whereas the hybrid composites exhibited mixed-mode fracture patterns, improving energy dissipation and enhancing crack propagation resistance.
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页数:7
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