Topic
Residual stress
About: Residual stress is a research topic. Over the lifetime, 39030 publications have been published within this topic receiving 554846 citations.
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TL;DR: In this article, the results of microstructural, mechanical property and residual stress investigations of four aluminium AA5083 friction stir welds produced under varying conditions were reported, and it was found that the weld properties were dominated by the thermal input rather than the mechanical deformation by the tool.
666 citations
TL;DR: This work demonstrates a cross-linked polymer that, upon exposure to light, exhibits stress and/or strain relaxation without any concomitant change in material properties.
Abstract: Chemically cross-linked polymers are inherently limited by stresses that are introduced by post-gelation volume changes during polymerization. It is also difficult to change a cross-linked polymer's shape without a corresponding loss of material properties or substantial stress development. We demonstrate a cross-linked polymer that, upon exposure to light, exhibits stress and/or strain relaxation without any concomitant change in material properties. This result is achieved by introducing radicals via photocleavage of residual photoinitiator in the polymer matrix, which then diffuse via addition-fragmentation chain transfer of midchain functional groups. These processes lead to photoinduced plasticity, actuation, and equilibrium shape changes without residual stress. Such polymeric materials are critical to the development of microdevices, biomaterials, and polymeric coatings.
647 citations
TL;DR: In this paper, the authors classify different residual stresses measurement methods and provide an overview of some of the recent advances in this area to help researchers on selecting their techniques depending on their application and the availabilities of those techniques.
633 citations
TL;DR: In this paper, two elastic plane strain problems relevant to the cracking of a thin film bonded to a dissimilar semi-infinite substrate material are investigated. But the results of these problems are limited to the case where the crack tip is within the film.
608 citations
606 citations