Experimental and Numerical Investigation of Effect of Static and Fatigue Loading on Behavior of Different Double Strap Adhesive Joint Configurations in Fiber Metal Laminates

Materials

Amad Zafar¹  Jiří Kratochvíl²  Jana Petrů²  Usama Muhammad Niazi³  Manzar Masud⁴  Haider Ali⁵  Muhammad Azeem⁵  Gulfam Ul Rehman⁵  Muhammad Umair Ali⁶  Muhammad Irfan⁷  Saifur Rahman⁷  Stanislaw Legutko⁸ 

[1] Department of Electrical Engineering, The Ibadat International University, Islamabad 54590, Pakistan;Department of Machining, Assembly and Engineering Metrology, VSB Technical University of Ostrava, 17. Listopadu 2172/15 Street, 708-00 Ostrava, Czech Republic;Department of Mechanical Engineering Technology, National Skills University, Islamabad 44000, Pakistan;Department of Mechanical Engineering, Capital University of Science and Technology (CUST), Islamabad 44000, Pakistan;Department of Mechanical Engineering, University of Wah, Quaid Avenue, Wah Cantt 47040, Pakistan;Department of Unmanned Vehicle Engineering, Sejong University, Seoul 05006, Korea;Electrical Engineering Department, College of Engineering, Najran University Saudi Arabia, Najran 61441, Saudi Arabia;Faculty of Mechanical Engineering, Poznan University of Technology, 3 Piotrowo Street, 60-965 Poznan, Poland;

关键词: adhesively bonded joints;    double strap joint;    fatigue loading;    static loading;    fiber metal laminate;    finite element analysis;   

DOI  :  10.3390/ma15051840

来源: DOAJ

【 摘 要 】

Double strap lap adhesive joints between metal (AA 6061-T6) and composite (carbon/epoxy) laminates were fabricated and characterized based on strength. Hand layup methods were used to fabricate double strap match lap joints and double strap mismatch lap joints. These joints were compared for their strength under static and fatigue loadings. Fracture toughness (GIIC) was measured experimentally using tensile testing and validated with numerical simulations using the cohesive zone model (CZM) in ABAQUS/Standard. Fatigue life under tension–tension fluctuating sinusoidal loading was determined experimentally. Failure loads for both joints were in close relation, whereas the fatigue life of the double strap mismatch lap joint was longer than that of the double strap match lap joint. A cohesive dominating failure pattern was identified in tensile testing. During fatigue testing, it was observed that inhomogeneity (air bubble) in adhesive plays a negative role while the long time duration between two consecutive cycle spans has a positive effect on the life of joints.

【 授权许可】

Unknown