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Heat-straightening technology (3 of 3)

Consider a piece of metal bar tightly fitted in a very stiff clamp as shown in Figure 1. If intense heat is applied to a small area of the bar as shown, the heated volume of metal will tend to expand, but the clamp restrains longitudinal expansion. Compressive stress then builds up in the bar [...]

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Heat-straightening Technology (2 of 3)

New Road Overbridge, crossing the M5 near Weston-super-Mare, was struck by a northbound truck carrying a shipping container in early 1999. The outer main girder, an 838 x 292 x 226 universal beam spanning 18m with composite concrete deck, sustained severe damage. There were no bracings connecting the outer girder to inner girders, and consequently [...]

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