Search Results - "Ainsworth, R.A."

Review on fracture and crack propagation in weldments – A fracture mechanics perspective by Zerbst, U., Ainsworth, R.A., Beier, H.Th, Pisarski, H., Zhang, Z.L., Nikbin, K., Nitschke-Pagel, T., Münstermann, S., Kucharczyk, P., Klingbeil, D.

“…•Comprehensive review on fracture mechanics application to weldments.•Discussion of recent developments in areas such as materials testing, strength mismatch…”
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An efficient procedure for reducing in-line-inspection datasets for structural integrity assessments by Larrosa, N.O., Lopez-Crespo, P., Ainsworth, R.A.

“…•The proposed procedure reduces the amount of ILI data requiring detailed analysis.•A geometry-based filter and elastic stress analysis are used to rank flaw…”
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Comparisons of the solutions of common FFS standard procedures to benchmark problems by Larrosa, N.O., Ainsworth, R.A.

“…The common practice in industry to assess the severity of crack-like defects in structural components is to follow methodologies usually compiled within…”
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‘Mind the gap’ in fitness-for-service assessment procedures-review and summary of a recent workshop by Larrosa, N.O., Ainsworth, R.A., Akid, R., Budden, P.J., Davies, C.M., Hadley, I., Tice, D.R., Turnbull, A., Zhou, S.

“…‘Mind the gap’ in Fitness-for-Service (FFS) assessment procedures was a workshop held at The University of Manchester in June 2015. The goal of the workshop…”
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Ductile fracture modelling and J-Q fracture mechanics: a constraint based fracture assessment approach by Larrosa, N O, Ainsworth, R A

“…The reduced state of stress triaxiality observed in shallow cracked components allows an increased capacity to resist crack propagation compared to that…”
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Engineering approaches for the assessment of low constraint fracture conditions: A critical review by Cicero, S., Ainsworth, R.A., Gutiérrez-Solana, F.

“…In the last two decades, constraint has constituted one of the major issues in fracture mechanics and structural integrity research. The possibility of…”
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The creep clauses of BS7910 by Ainsworth, R.A.

“…The creep parts of the BS7910 fitness-for-service procedure were first produced as PD6539 in 1994. Since then there have been significant developments in creep…”
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Failure assessment diagrams for high temperature defect assessment by Ainsworth, R.A., Hooton, D.G., Green, D.

“…Recently the failure assessment diagram approach to defect assessment has been extended to address high temperature fracture. In this paper, a procedure is set…”
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Corrigendum to “T-stress solutions for through-wall circumferential cracks in straight pipes under bending” [Int. J. Pres. Ves. Piping 152 (2017) 27–37] by Gintalas, M., Ainsworth, R.A., Scenini, F.

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A constraint correction method based on use of a single test specimen by Gintalas, M., Ainsworth, R.A.

“…Commonly, fracture toughness tests on deeply cracked specimens are used to assess defects in large-scale components. The paper presents a method for selection…”
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T-stress solutions for through-wall circumferential cracks in straight pipes under bending by Gintalas, M., Ainsworth, R.A., Scenini, F.

“…This paper reports the results of an extensive series of finite element calculations to provide normalised T-stress solutions for through-wall cracked pipes…”
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Fracture assessments with elastic follow-up for combined primary and secondary loadings by Lee, Hyun-Jae, Kim, Yun-Jae, Ainsworth, R.A., Oh, Chang-Young

“…•The J estimation equations for combined primary and secondary loadings are verified by FE results.•A circumferential cracked pipe under tension with thermal…”
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Ductile fracture modelling and J-Q fracture mechanics: a constraint based fracture assessment approach by N.O. Larrosa, R.A. Ainsworth

“…The reduced state of stress triaxiality observed in shallow cracked components allows an increased capacity to resist crack propagation compared to that…”
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Consideration of elastic follow-up in the treatment of combined primary and secondary stresses in fracture assessments by Ainsworth, R.A.

“…► The paper quantifies primary and secondary stress interactions on fracture. ► A relaxation equation treats secondary stress with and without elastic…”
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Fracture assessments with elastic follow-up for combined primary and secondary loadings part 1: Predictive models by Ainsworth, R.A., Kim, Y.J.

“…•Paper defines elastic follow-up for treatment of combined primary and secondary loadings in fracture assessments.•Estimates of the elastic follow-up factor…”
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Residual stress measurement round robin on an electron beam welded joint between austenitic stainless steel 316L(N) and ferritic steel P91 by Javadi, Y., Smith, M.C., Abburi Venkata, K., Naveed, N., Forsey, A.N., Francis, J.A., Ainsworth, R.A., Truman, C.E., Smith, D.J., Hosseinzadeh, F., Gungor, S., Bouchard, P.J., Dey, H.C., Bhaduri, A.K., Mahadevan, S.

“…This paper is a research output of DMW-Creep project which is part of a national UK programme through the RCUK Energy programme and India's Department of…”
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A transferability approach for reducing excessive conservatism in fracture assessments by Larrosa, N.O., Ainsworth, R.A.

“…A source of uncertainty and conservatism in structural integrity assessments is the value of fracture toughness (Kmat) that is used. For conservative results,…”
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Notch bluntness effects on fracture toughness of a modified S690 steel at 150°C by Kim, J.-S., Larrosa, N.O., Horn, A.J., Kim, Y.-J., Ainsworth, R.A.

“…•Notch acuity effect has been assessed for modified S690 steel in the ductile regime.•Results showed an increase in fracture toughness with increasing notch…”
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The effects of load biaxiality and plate length on the limit load of a centre-cracked plate by Meek, C., Ainsworth, R.A.

“…•Upper and lower bound limit loads of a plane strain centre-cracked plate estimated.•Finite element limit loads shown to be often close to upper bound…”
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Rapid parametric analysis of SEN(T) specimens using algorithmic modelling: Evaluation of strain energy density and notch stress intensity factors by Larrosa, N.O., Treifi, M., Ainsworth, R.A.

“…The aim of this paper is to present a methodology to rapidly evaluate the strain energy density (SED) and the notch stress intensity factor (NSIF) of a wide…”
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