500 rpm - 600 mm/min 1500 rpm - 600 mm/min 1000 rpm - 400 mm/min Heat generation from the probe surface is R probe θ=π 3 1000 rpm - 600 mm/min = 1000 rpm - 200 mm/min = ∫ ∫ ω⋅τ ⋅ 2 ⋅ θ⋅ = H = H Q R d dr R a probe = ∫ ∫ ω⋅τ ⋅ ⋅ ⋅ 2 (4) = The multiplying factor 3 denotes the three sides of the TR probe. Heat generation from the tip surface by using a polar coordinate, 3 (5) The multiplying factor 6 denotes the six different regions that form the whole TR surface. From Equations 3, 4, and 5, QTotal can be calculated as QTotal = Q1 + Q2 + Q3 Q R dx dy H R contact probe probe probe 0 0 = R a contact probe probe 0 3 0 = θ= WELDING RESEARCH APRIL 2015 / WELDING JOURNAL 119-s Fig. 9 — Numerical modeling of the SQ pin profile under different process conditions. 1000 rpm - 500 mm/min
Welding Journal | April 2015
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