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- Title
碳纤维感应元件厚度对碳纤维增强热塑性 复合材料感应焊接接头力学性能及 断裂形式的影响.
- Authors
王飞云; 罗杰帮; 张平则; 刘星; 占小红
- Abstract
The carbon fiber susceptors with different thicknesses of 0.2 mm, 0.3 mm and 0.5 mm were prepared based on carbon fabric and resin film by the hot moulding process, and the temperature simulation and process experiment of induction welding for carbon fiber reinforced thermoplastic composite (CFRTP) were carried out. The fusion morphologies of welded joints with carbon fiber susceptors of different thicknesses were observed. To investigate the effect of thickness of carbon fiber susceptor on the mechanical property and fracture mode of CFRTP induction welded joint, the fracture morphologies and fracture modes of welded joints with different susceptors thicknesses were analyzed after the tensile-shear test. The results show that carbon fiber susceptor enables high quality induction welding of CFRTP without introducing heterogeneous materials, but a significant inhomogeneity in temperature distribution exists at the joining interface. As the thickness of the susceptor, not only the effective joining area at the interface is reduced but also the forming effect, joining quality and mechanical property of welded joint deteriorate due to the excessive melted resin. The maximum tensile-shear strength of the welded joint is 23.77 MPa when the thickness of the susceptor is 0.2 mm. The fracture modes of welded joints include cohesive failure of the susceptor, self failure of base material, mixed failure and interface failure, which change according to the thickness of added susceptor.
- Subjects
WELDED joints; FIBROUS composites; CARBON fibers; INHOMOGENEOUS materials; TEMPERATURE distribution; THERMOPLASTIC composites
- Publication
Acta Materiae Compositae Sinica, 2023, Vol 40, Issue 4, p2405
- ISSN
1000-3851
- Publication type
Article
- DOI
10.13801/j.cnki.fhclxb.20220618.001