Three-dimensional elastic-plastic finite element analyses have been conducted on pipes containing circumferential embedded flaws and subject to global bending load. (W 105) (1)

Embedded flaws = Falhas embutidas, incorporadas, integradas

The study concluded that touching co-planar flaws evolve into a bounding flaw in a similar manner to that observed in fatigue. (W 63) (2)

Bounding flaw = Falha delimitadora

In the NESC-1 Spinning Cylinder test, a large surface-breaking flaw in a thick steel cylinder component was subjected to high primary and secondary stresses produced by combined rotation and thermal shock loading. (W 382) (3)

Surface-breaking flaw = Falha de quebra de superfície

(1) Approaches for Determining Limit Load and Reference Stress for Circumferential Embedded Flaws in Pipe Girth Welds

Mohamad J Cheaitani 

TWI Ltd Granta Park, Great Abington, Cambridge CB21 6AL, UK

Pipeline Technology Conference, Ostend, Belgium 2009.

(2) > Technical Knowledge > Published Papers > The History of BS 7910 Flaw Interaction Criteria

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The History of BS 7910 Flaw Interaction Criteria

Bostjan Bezensek* 

Hunting Energy Services (UK) Ltd

Badentoy Park, Portlethen, Aberdeen AB12 4YB

John Sharples

Serco Technical Consultancy Services,                          

Birchwood park, Warrington, Cheshire WA3 6GA

Isabel Hadley (TWI Ltd) 

Henryk Pisarski (TWI Ltd) 

Paper presented at ASME 2011 Pressure Vessels and Piping Division Conference, Baltimore, Maryland USA, 17-21 July 2011. Paper PVP2011-57857.

(3) Analysis of crack arrest event in NESC-1 spinning cylinder experiment

W Xu, J B Wintle, C S Wiesner and D G Turner+

Paper published in International Journal of Pressure Vessels & Piping, Volume 79, Issue 11, November 2002, pp. 777-787. by Elsevier www.elsevier.com/locate/ijpvp

+ Current address: MBDA (UK) Ltd, Six Hills Way, Stevenage, UK