Search Results - "Withers, P.J."

X-ray computed tomography of polymer composites by Garcea, S.C., Wang, Y., Withers, P.J.

“…The use of X-ray computed tomography (CT), exploiting both synchrotron and laboratory sources, has grown significantly over the last decade, driven primarily…”
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The effect of manufacturing defects on the fatigue life of selective laser melted Ti-6Al-4V structures by Hu, Y.N., Wu, S.C., Withers, P.J., Zhang, J., Bao, H.Y.X., Fu, Y.N., Kang, G.Z.

“…The manufacturing defects introduced by selective laser melting typically lead to lower fatigue strength and a larger variation in fatigue life compared to…”
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Porosity regrowth during heat treatment of hot isostatically pressed additively manufactured titanium components by Tammas-Williams, S., Withers, P.J., Todd, I., Prangnell, P.B.

“…X-ray computed tomography has been used to track the behaviour of individual pores found in selective electron beam melted additive manufactured titanium…”
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The imaging of failure in structural materials by synchrotron radiation X-ray microtomography by Wu, S.C., Xiao, T.Q., Withers, P.J.

“…•We present the unique characteristics of SR-μCT to study of fatigue behaviors in engineering structural materials.•There is a wealth of information about…”
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Large volume serial section tomography by Xe Plasma FIB dual beam microscopy by Burnett, T.L., Kelley, R., Winiarski, B., Contreras, L., Daly, M., Gholinia, A., Burke, M.G., Withers, P.J.

“…Ga+ Focused Ion Beam-Scanning Electron Microscopes (FIB-SEM) have revolutionised the level of microstructural information that can be recovered in 3D by block…”
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The quantification of impact damage distribution in composite laminates by analysis of X-ray computed tomograms by Léonard, F., Stein, J., Soutis, C., Withers, P.J.

“…One of the great strengths of X-ray computed tomography over conventional inspection methods (ultrasound, thermography, radiography) is that it can image…”
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Crystallographic effects on the corrosion of twin roll cast AZ31 Mg alloy sheet by Pawar, S., Slater, T.J.A., Burnett, T.L., Zhou, X., Scamans, G.M., Fan, Z., Thompson, G.E., Withers, P.J.

“…The influence of crystal orientation on the corrosion behaviour of twin roll cast (TRC) AZ31 Mg alloy sheet has been investigated using correlative microscopy…”
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The effect of defects on the mechanical response of Ti-6Al-4V cubic lattice structures fabricated by electron beam melting by Hernández-Nava, E., Smith, C.J., Derguti, F., Tammas-Williams, S., Leonard, F., Withers, P.J., Todd, I., Goodall, R.

“…Electron Beam Melting (EBM) as a means of Additive Manufacturing (AM), is of interest for the fabrication of intricate geometries for cellular materials in…”
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The heterogenous distribution of white etching matter (WEM) around subsurface cracks in bearing steels by Curd, M.E., Burnett, T.L., Fellowes, J., Donoghue, J., Yan, P., Withers, P.J.

“…White etching cracks (WECs) initiate subsurface in bearings and can propagate to cause premature failure. These cracks are bordered by an altered…”
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Additive manufacturing assisted investment casting: A low-cost method to fabricate periodic metallic cellular lattices by Carneiro, V.H., Rawson, S.D., Puga, H., Meireles, J., Withers, P.J.

“…Metallic cellular solids are a class of materials known for their high specific mechanical properties, being desirable in applications where a combination of…”
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Engineering of textured gradient microstructures using directed energy deposition: The impact of adaptive cooling rate by Khodabakhshi, F., Farshidianfar, M.H., Gerlich, A.P., Khajepour, A., Mohammadi, M., Withers, P.J.

“…[Display omitted] •The development of textured gradient microstructures upon DED building of 316L stainless steel was investigated.•Large-scale EBSD mapping…”
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2D and 3D imaging of fatigue failure mechanisms of 3D woven composites by Yu, B., Bradley, R.S., Soutis, C., Hogg, P.J., Withers, P.J.

“…A detailed investigation of the failure mechanisms for angle-interlocked (AI) and modified layer-to-layer (MLL) three dimensional (3D) woven composites under…”
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The effect of density and feature size on mechanical properties of isostructural metallic foams produced by additive manufacturing by Hernández-Nava, E., Smith, C.J., Derguti, F., Tammas-Williams, S., Léonard, F., Withers, P.J., Todd, I., Goodall, R.

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The effect of shoulder coupling on the residual stress and hardness distribution in AA7050 friction stir butt welds by Sun, T., Reynolds, A.P., Roy, M.J., Withers, P.J., Prangnell, P.B.

“…The effect of shoulder coupling in friction stir welding (FSW) on the distribution of residual stresses, microstructure and hardness has been investigated by…”
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Modelling the effect of elastic and plastic anisotropies on stresses at grain boundaries by Gonzalez, D., Simonovski, I., Withers, P.J., Quinta da Fonseca, J.

“…•We use crystal plasticity to model the stresses at grain boundaries in a polycrystal.•These are dominated by plastic (rather than elastic) anisotropy after…”
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Effect of overload on crack closure in thick and thin specimens via digital image correlation by Yusof, F., Lopez-Crespo, P., Withers, P.J.

“…•Evolution of closure in thick and thin CT specimens prior and after overload.•Closure quantified through COD and full-field K-Muskhelishvili…”
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Strain-induced reactivation of corrosion pits in austenitic stainless steel by Almuaili, F.A., McDonald, S.A., Withers, P.J., Cook, A.B., Engelberg, D.L.

“…[Display omitted] •Strain-induced reactivation of a corrosion pit was observed, in-situ.•Pit stability products and 3D pit growth kinetics were…”
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Determination of the high temperature elastic properties and diffraction elastic constants of Ni-base superalloys by Aba-Perea, P.E., Pirling, T., Withers, P.J., Kelleher, J., Kabra, S., Preuss, M.

“…The diffraction elastic constants and phase specific elastic constants of two Ni-base Superalloys, Inconel 718 (as-quenched and aged) and Udimet 720LI (aged)…”
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Investigation of residual stress distribution and texture evolution in AA7050 stationary shoulder friction stir welded joints by Sun, T., Tremsin, A.S., Roy, M.J., Hofmann, M., Prangnell, P.B., Withers, P.J.

“…A study of the residual stress distribution and texture evolution in stationary shoulder friction stir welded (SSFSW) AA7050 plate through non-destructive…”
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Determination of the constitutive relation and critical condition for the shock compression of cellular solids by Sun, Yongle, Li, Q.M., McDonald, S.A., Withers, P.J.

“…This study aims at understanding the constitutive relation and critical condition for the shock compression of cellular solids. A 2D virtual foam is…”
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