Fracture Analysis of EN AW-6063 Aluminum Alloy Thin-Walled Welded Stairs

Abstract:

In the paper extended experimental study and numerical analysis of fatigue strength of aluminum alloy EN AW – 6063 welded thin-walled aluminum structural stair construction is presented. The FEM calculations were carried out. In analysis the concept of the weak link was applied. The critical thin-walled welded tread stairs node was selected and the concept was verified experimentally for two variants of cyclic loading. The effect of cyclic loading on crack initiation and propagation in the welds and on residual strength was examined. It was observed the reduction in residual strength, i.e. 1.61% for the construction of thin-walled welded connection after 30 000 cycles, and about 6.19% after 100 000 cycles.

• Periodical: Solid State Phenomena (Volume 250)
• Pages: 22-28
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.250.22
• Online since: April 2016
• Authors: Krzysztof Gołoś*, Maciej Jastrzebski
• Keywords: Aluminum Alloy EN AW-6063, Fracture, Welded Structure

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