Locations of strain gauges for fatigue analysis of welded joints (3)

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Notes

^1. The calculation for a two-standard deviations S − N line for the non-destructive factor P = 50% and average in the figure is expressed by

This was obtained by the author from the experimental points.

The description of the hotspot stress approach to square pipe welded joints is in the first half of this paper, and one conclusion is that the design stress range (FAT) for N = 2 × 10⁶ in the Δσ_hs − N _f line of an aluminium alloy welded joint is contained in the 40 N/mm² region.