The manufacturing of components for aero engine structures from a flat sheet to the final shape usually requires several steps that may introduce residual stresses and shape distortions in the part. Depending on the magnitude, sign and distribution with respect to the stresses induced by the service load, the remaining stresses may affect the service life of a component, especially when submitt...

;login: FEBRUARY 2013 45 Thomas W. Barr is a fifth-year PhD student at Rice University in the Department of Computer Science. He received his BS degree in engineering and music from Harvey Mudd College in 2008. He has published research in computer architecture, embedded systems software, and high-performance computing. Outside of graduate school, he has worked as an expert witness and in litig...

on behalf of CMS and ATLAS collaborations Institute for studies in theoretical physics and mathematics (IPM), Production of single top quarks at LHC provides a perfect possibility to investigate the properties of electroweak interaction, in particular tWb coupling. Moreover, single top is a powerful mean to identify physics beyond the standard model. All three different production mechanisms of...

The present paper aims to study the behavior of tailor welded blanks subjected a single point incremental forming (SPIF) process from an experimental view. This was chosen deform truncated cone shapes AA1050 aluminum alloy with different thicknesses. A uniaxial tensile test performed determine mechanical characteristics alloy. Initial tests implicated use variable wall angle parts which were pr...

Original scientific paper The joints made by fusion of materials are exposed to the influence of residual stresses induced by welding thermal cycles. Residual stresses were measured on butt welded plates made of NIOMOL 490K, before and after reparation. The objective of this paper is to compare three methods of residual stress measurement (hole-drilling method, x-ray diffraction and directional...

This study investigated the effects of the hot isostatic pressing process on the crack healing, microstructure, and mechanical properties of the laser repair-welded CM247LC precipitation-hardened superalloy. To ensure the strength of the repair-welded area, this study used the direct re-melting approach, and simulated the repair welding with the filler addition, which has a chemical composition...

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The paper gives an outline of the non-destructive evaluation (NDE) methods currently being pursued at the Admiralty Marine Technology Establishment, Dunfermline, Scotland. The methods are being used to locate and characterise fatigue cracks in high yield strength welded steel structures. The techniques have been applied principally to large fatigue models (5' and 9' diameter) as part of a compr...