BibTeX:

@article{IJIRSTV1I11024,
     title={Fatigue Damage Analysis for Spot Welded Joints},
     author={Tinson Abraham Chacko, Aby Shaji, Riju Thomas2, Subin Varghese and Vishnuprasad K},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={1},
     number={11},
     pages={160--165},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV1I11024.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

Fatigue is the failure of a material when it is subjected to repeated fluctuations of constant applied stress. Fatigue life is a very important factor in the choice of materials used for various fabrication purposes. The change in fatigue life of a material when it is subjected to different manufacturing process like welding it’s an important factor of concern. This work mainly focuses on the prediction of fatigue life for spot welded joints based on its natural frequency. It changes when subjected to a fatigue load. On the basis FEM analysis, the variation of natural frequency during Crack propagation process was investigated for single spot and double spot welded specimen. The crack area was used to define the fatigue damage, and to establish relationship between damage area and natural frequency ratio. The residual fatigue life of specimen, which had undergone certain fatigue damage, was predicted by means of the damage evolution principle of mechanics. The results showed that the proposed damage parameter can describe the fatigue process for spot welded joints. Various models required for the testing is being designed using Solid works software. The designed models are then exported to ANSYS software of failure analysis and the results were documented.

Fatigue, Deformation, Natural Frequency, Damage factor, Fatigue Life