May 2, 2024
University of Bonab
فارسی
Hadi Rezghi Maleki

Hadi Rezghi Maleki

Academic rank: Assistant professor
Address: Department of Mechanical Engineering, University of Bonab, Bonab, East Azerbaijan, Iran P.O.box: 5551761167
Education: Ph.D in Mechanical Engineering - Manufactuing and Production
Phone: 04137745000-1640
Faculty: Faculty of Engineering
Department: Mechanical Engineering
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Research

Title
Effect of bolt tightening on the fatigue behavior of GLARE double shear lap joints
Type Article
Keywords
Bolt Clamping, Fatigue, GLARE, Fiber Metal Laminate, Pre-stress.
Researchers Babak Abazadeh، Hadi Rezghi Maleki

Abstract

In this paper, the effect of bolt torque tightening has been investigated on the fatigue behavior of GLARE in double shear lap configuration. To do so, experimental fatigue tests were conducted using GLARE3-5/4-0.4 specimens with applied torques of 0 (finger tightened), 2 and 4 Nm at different cyclic longitudinal load ranges to achieve the stress-life (S-N) curves. The results revealed that applying and increasing the clamping force enhances the fatigue life of the GLARE specimens. Furthermore, comparison of fatigue test results of GLARE and available monolithic aluminum alloy 2024-T3 plates indicated when the applied load range is low, the effect of clamping force is more noticeable in GLARE specimens due to longer fatigue crack growth life of GLARE. Also, the occurrence of fretting fatigue didn’t reduce the fatigue life of GLARE specimens considerably in contrary to aluminum sheets because of the laminated structure of GLARE. The obtained results can provide insights in designing bolted GLARE joints with superior fatigue in-service performance.
University of Bonab
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