Print Email Facebook Twitter Fatigue modeling and numerical analysis of re-filling probe hole of friction stir spot welded joints in aluminum alloys Title Fatigue modeling and numerical analysis of re-filling probe hole of friction stir spot welded joints in aluminum alloys Author Yousefi, Armin (University of Tehran) Serjouei, Ahmad (Nottingham Trent University) Hedayati, R. (TU Delft Novel Aerospace Materials) Bodaghi, Mahdi (Nottingham Trent University) Date 2021 Abstract In the present study, the fatigue behavior and tensile strength of A6061-T4 aluminum al-loy, joined by friction stir spot welding (FSSW), are numerically investigated. The 3D finite element model (FEM) is used to analyze the FSSW joint by means of Abaqus software. The tensile strength is determined for FSSW joints with both a probe hole and a refilled probe hole. In order to calculate the fatigue life of FSSW joints, the hysteresis loop is first determined, and then the plastic strain amplitude is calculated. Finally, by using the Coffin-Manson equation, fatigue life is predicted. The results were verified against available experimental data from other literature, and a good agree-ment was observed between the FEM results and experimental data. The results showed that the joint’s tensile strength without a probe hole (refilled hole) is higher than the joint with a probe hole. Therefore, re-filling the probe hole is an effective method for structures jointed by FSSW subjected to a static load. The fatigue strength of the joint with a re-filled probe hole was nearly the same as the structure with a probe hole at low applied loads. Additionally, at a high applied load, the fatigue strength of joints with a refilled probe hole was slightly lower than the joint with a probe hole. Subject Fatigue lifeFinite element modelFSSWTensile strengthWelding To reference this document use: http://resolver.tudelft.nl/uuid:952aeebf-d6ea-4083-a0de-80fae817dc25 DOI https://doi.org/10.3390/ma14092171 ISSN 1996-1944 Source Materials, 14 (9) Part of collection Institutional Repository Document type journal article Rights © 2021 Armin Yousefi, Ahmad Serjouei, R. Hedayati, Mahdi Bodaghi Files PDF materials_14_02171_v2.pdf 1.81 MB Close viewer /islandora/object/uuid:952aeebf-d6ea-4083-a0de-80fae817dc25/datastream/OBJ/view