![]() ![]() TWI’s Members include many of the world’s suppliers of FSW equipment. A consolidated solid-phase joint is formed.įSW being a solid-state process eliminates many of the defects associated with fusion welding techniques such as shrinkage, solidification cracking and porosity. ![]() The rotating tool moves along the joint line. It is a novel additive manufacturing technique that employs part-by-part formation of the desired product. The frictional heat causes a plasticised zone to form around the tool. Friction stir additive manufacturing is a welding technique of friction stir-based family as mentioned in Fig. In the process a rotating FSW tool is plunged between two clamped plates. Process OverviewįSW is a solid-state joining process that creates high-quality, high-strength joints with low distortion and is capable of fabricating either butt or lap joints, in a wide range of material thicknesses and lengths. Accordingly, we have a wealth of experience of applying the process industrially, in addition to in-depth knowledge of the fundamental science that underlies it. FSW, being a solid-state, low-energy-input, repeatable mechanical process capable of producing very high-strength welds in a wide range of materials, offers a potentially lower-cost, environmentally benign solution to these challenges.įSW was invented and pioneered by TWI Ltd. National Structural Integrity Research Centreįabricators are under increasing pressure to produce stronger and lighter products whilst using less energy, less environmentally harmful materials, at lower cost and more quickly than ever before.Structural Integrity Research Foundation.
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