The engineering stress-strain curves obtained from a series of specimens taken around the circumference of the pipe are shown in Figure 1. (W 31) (1)

Stress-strain curve = Curvatura da tensão-deformação

Fracture toughness test results on parent steels and welds revealed that an increase in loading rate causes a shift in the fracture toughness transition curve. (Welding 380) (2)

Transition curve = Curvatura de transição

The dispersion curves for a rail are discussed and modelling results of the variation of reflection coefficient with defect depth is presented for aBS113A type rail. (W 401) (3)

Dispersion curve = Curvatura de dispersão

(1) Flaw Tolerance of Pipelines Containing Circumferential Flaws Subjected to Axial Straining and Internal Pressure – Tests and Analyses.

H. Pisarski, S. Smith and T. London 

TWI Ltd, 

Cambridge, UK. 

Paper presented at ISOPE Conference July 2013, Anchorage, Alaska, USA.

(2) Design advice at 30 mph

Case Study

www.twi-global.com/news-events/case-studies/design-advice-at-30-mph-335/ – 2014-05-06.

(3) The application of finite element modelling to guided wave testing systems

R M Sanderson and S D Smith, TWI

Paper presented at QNDE Conference 2002, Western Washington University, 14-19 July 2002.