Measurement of damage growth in ultrasonic spot welded joints

Conference Paper (2022)
Author(s)

E.T.B. Smeets (TU Delft - Group Rans)

Calvin Rans (TU Delft - Structural Integrity & Composites)

RC Alderliesten (TU Delft - Structural Integrity & Composites)

Saullo G.P. Giovani Pereira Castro (TU Delft - Aerospace Structures & Computational Mechanics)

Irene Villegas (TU Delft - Aerospace Structures & Computational Mechanics)

Research Group
Structural Integrity & Composites
Copyright
© 2022 E.T.B. Smeets, C.D. Rans, R.C. Alderliesten, Saullo G.P. Castro, I.F. Villegas
More Info
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Publication Year
2022
Language
English
Copyright
© 2022 E.T.B. Smeets, C.D. Rans, R.C. Alderliesten, Saullo G.P. Castro, I.F. Villegas
Research Group
Structural Integrity & Composites
Pages (from-to)
439-447
ISBN (electronic)
978-2-9701614-0-0
Reuse Rights

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Abstract

Ultrasonic spot welding is a joining technique for thermoplastic composites with great potential regarding processing speed and cost. To investigate the damage tolerance and possible inherent damage arresting behavior of multi-spot welded joints, a technique is necessary to measure damage growth in the joints under cyclic loading. Visual inspection is not possible because the damage is not located on the outside surface and conventional techniques such as C-scan are not practical during a fatigue test because the specimen would have to be removed from the setup. This paper details a methodology for quantifying damage growth rates in singlespot welded joints using surface strain measurements made by Digital Image Correlation. This represents the first step towards developing a methodology for quantifying damage progression behavior in complex multi-spot welded joints.