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所属单位：材料科学与技术学院

发表刊物：INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES

关键字：Fracture toughness Failure mechanism Surface roughness Surface Pattern Stress region

摘要：The present work is to investigate fracture toughness of titanium-PEEK by linking the interface fracture toughness to surface parameters of micro-pit on titanium panels during delamination. The relationship between geometrical parameters and failure mechanisms is also explained. The regular micro-pits were fabricated on pure titanium panels by Lithography. The effects of micro-pattern on fracture toughness were systematically evaluated by changing geometrical parameters of surface topography. The results showed that by changing the parameters of surface pattern, the fracture toughness can be manipulated through plastic deformation and molecular bond breaking of PEEK. The optimized wetting angle and surface free energy, having influenced on the real contact area and the stress regions, were obtained by adjusting the geometrical parameters. Finally, it was found that the failure mechanism transition from interface to cohesive was because of the attributed optimal parameters, showing more energy dissipation.

ISSN号：0143-7496

是否译文：否

发表时间：2017-06-01

合写作者：Zheng, Zengmin,Ali, Aamir,Lv, Yunfei,Roy, Nipon,Zhang, Aiai,Wang, Yifan,Fan, Minyu,陶杰

通讯作者：潘蕾