Experimental Research on Degradation of Adhesively Bonded Box Beam under Cyclic Torsional Loads

Qing Feng; Jing Fen Zhang; Martin Hornung; Juergen Becher

doi:10.4028/www.scientific.net/AMM.268-270.1212

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 268-270Experimental Research on Degradation of Adhesively...

Experimental Research on Degradation of Adhesively Bonded Box Beam under Cyclic Torsional Loads

Abstract:

Abstract. Structural adhesively bonded and spot welded structures in a car body will experience cyclic loading resulting in degradation, especially in energy absorption performance of welded terms. This paper is focused on the degradation of adhesively bonded and weld-bonded box beams versus equivalent spot welded samples. In the first part of this paper, results from the experimental testing of box beams with different joint methods under cyclic torque are presented. The torsional stiffness of box beams is shown to degrade and box beams with different joint methods show different performance. In the second part, 3-point bending crash test results show the different performance of energy absorption with different joint methods. Bonded and weld-bonded box beams with toughened structural adhesive maintain energy absorption performance compared to the original level, while spot welded profiles show a significant decrease.

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Periodical:

Applied Mechanics and Materials (Volumes 268-270)

Pages:

1212-1219

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.268-270.1212

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Online since:

December 2012

Authors:

Qing Feng, Jing Fen Zhang, Martin Hornung, Juergen Becher

Keywords:

Box Beam, Cyclic Loading, Degradation, Energy Absorption, Fatigue, Structural Adhesive

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References

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