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The surfaces of a heavily loaded ball-joint were initially covered with a sliding spray and suffer wear. A solution is found by incorporating UHMWPE pads (Ultra high molecular weight polyethylene) with a carbon fibre/epoxy reinforced ring as sliding material into the chairs of the structure, while the steel ball-side is covered with a Zn-phosphate primer coating, protecting against corrosion. The...
Ultra high molecular weight polyethylene (UHMWPE) reinforced with a carbon fibre/epoxy ring (hybrid polymer pad) is used as bearing elements in a ball-joint for rotation of a storm surge barrier, requiring high strength and dimensional stability. The concave bearing surfaces contain 500 pads with diameter 250mm incorporated in machined holes. As they are used as functional parts, high deformation...
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