Charpy testing is a method for determining the relative impact strength of metals. It is also known as the Charpy V notch test. This testing method was developed in the 1940s by S.B. Russell and G.

Charpy test specimens normally measure 55x10x10mm and have a notch machined across one of the larger faces. The notches may be: • V-notch – A V-shaped notch, 2mm deep, with 45° angle and 0.25mm radius ...

Fig. 2 shows rectangular surface flaws with depth-WT ratios of 0.1-0.9 for a 12.75-in. OD, 0.3-in. WT, X52 pipe material with 1,000 ft-lb or higher full-size Charpy V-notch upper shelf energy ...