Search Results - "Coules, H. E."

Natural Seawater Impact on Crack Propagation and Fatigue Behavior of Welded Nickel Aluminum Bronze by Dobson, T. H. E., Wilson, P., Larrosa, N. O., Williams, M., Coules, H. E.

“…ABSTRACT Nickel aluminum bronze (NAB) is a complex alloy used extensively in the marine environment. Fatigue strength of NAB is reduced by welding and prior…”
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Full-tensor Measurement of Multiaxial Creep Stress Relaxation in Type 316H Stainless Steel by Coules, H. E., Nneji, S. O., James, J. A., Kabra, S., Hu, J. N., Wang, Y.

“…Background Mechanical constitutive models of metals can be difficult to validate without loss of generality. Creep-induced stress relaxation in stainless…”
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Approximating the upper bound in elastic stress intensity factor for a crack in an unknown residual stress field by Coules, H.E., Smith, D.J.

“…•We consider cracks in unknown residual and thermal stress fields.•It is proposed that a maximum possible stress intensity factor exists for any such crack.•A…”
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Studying the interaction of crack-like flaws using the MATLAB toolbox int_defects by Coules, H.E., Probert, M.A.

“…•int_defects is a free and open-source MATLAB toolbox for studying flaw interaction.•It uses the Abaqus FEA package for performing cracked-body…”
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A Combined Experimental and Modelling Approach to Elastic–Plastic Crack Driving Force Calculation in the Presence of Residual Stresses by Coules, H. E., Smith, D. J., Orrock, P. J., Abburi Venkata, K., Pirling, T.

“…Since all residual stress measurement methods have inherent limitations, it is normally impractical to completely characterise a three-dimensional residual…”
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Measurement of the residual stresses in a PWR Control Rod Drive Mechanism nozzle by Coules, H.E., Smith, D.J.

“…•Residual stresses in a CRDM nozzle susceptible to PWSCC were measured.•Strongly tensile stresses are observed in the cladding and nozzle attachment…”
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Effect of elastic follow-up and ageing on the creep of an austenitic stainless steel by Wang, Y.Q., Coules, H.E., Truman, C.E., Smith, D.J.

“…•Novel creep tests under elastic follow-up control were performed.•A phenomenological creep model considered the effect of elastic follow-up was…”
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Applying electron backscattering diffraction to macroscopic residual stress characterisation in a dissimilar weld by Abburi Venkata, K., Truman, C.E., Coules, H.E., Warren, A.D.

“…Dissimilar metal welds are complicated in nature because of the complex microstructure characteristics in the weld fusion zone. It is often necessary to know…”
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A method for reconstruction of residual stress fields from measurements made in an incompatible region by Coules, H.E., Smith, D.J., Abburi Venkata, K., Truman, C.E.

“…A method is introduced by which the complete state of residual stress in an elastic body may be inferred from a limited set of experimental measurements. Two…”
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Parametric design of scaled-down pressurised thermal shock test specimens using inelastic analysis by Coules, H.E., Orrock, P.J., Truman, C.E.

“…[Display omitted] •Thermal shock tests for nuclear reactor pressure vessels can be miniaturised.•Models show that scaled-down tests can give equivalent…”
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Experimental measurement of biaxial thermal stress fields caused by arc welding by Coules, H.E., Colegrove, P., Cozzolino, L.D., Wen, S.W.

“…► The formation of residual stresses during arc welding has been observed. ► Aspects of the transient thermal stress field, and their underlying causes, are…”
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Nonlinear cable-deck interaction vibrations of cable-stayed bridges by Shen, G., Macdonald, J., Coules, H.E.

“…•Nonlinear dynamic interaction between the cable and deck of cable-stayed bridges is studied.•Accurate analytical solutions for the steady-state motion of such…”
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Stress intensity interaction between dissimilar semi-elliptical surface cracks by Coules, H.E.

“…Procedures for structural integrity assessment normally contain criteria to predict the significance of the interaction between neighbouring defects in a…”
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On predicting the interaction of crack-like defects in ductile fracture by Coules, H.E.

“…Closely-spaced cracks in structures can interact with each other; the presence of one crack can change the strain energy release rate at another crack nearby…”
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Interaction of surface cracks subjected to non-uniform distributions of stress by Coules, H.E.

“…Closely-spaced surface cracks in structures interact with each other when subjected to load. The degree of interaction depends strongly on the distribution of…”
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Reflectance Transformation Imaging as a tool for engineering failure analysis by Coules, H.E., Orrock, P.J., Seow, C.E.

“…Reflectance Transformation Imaging (RTI) is a technique which can be used to record the surface appearance of objects. It can capture a surface's interaction…”
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The effects of residual stress on elastic-plastic fracture propagation and stability by Coules, H.E., Horne, G.C.M., Abburi Venkata, K., Pirling, T.

“…Residual stresses in materials affect their resistance to the initiation of fracture and to subsequent crack growth. Using full-field strain measurements and…”
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Localised prior strain-hardening increases the tearing resistance of ductile steel by Coules, H.E., Horne, G.C.M., Peel, M.J., Connolley, T.

“…•We report a toughening mechanism based on a varying yield stress ahead of the crack.•Stress and strain field measurements show load shedding to a…”
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Measurement of Highly Non-Uniform Residual Stress Fields with Reduced Plastic Error by Kim, H. K., Coules, H. E., Pavier, M. J., Shterenlikht, A.

“…Experimental validations of a recently proposed method for residual stress measurement are presented. The method, specifically designed for highly non-uniform…”
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Three-dimensional mapping of the residual stress field in a locally rolled aluminium alloy specimen by Coules, H.E., Horne, G.C.M., Kabra, S., Colegrove, P., Smith, D.J.

“…•The residual stress field caused by localised rolling of an Al alloy specimen is characterised.•This form of rolling could be used for the stress relief of…”
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