Assessment of component material properties
The Small Punch Test is a powerful method to provide actual values of mechanical properties of high-energy components
The small punch test is a new, in essence a non-destructive test with promises of direct assessment of component material properties. The most attractive aspect is that only a small amount of material is needed. The dimensions of the small punch specimen are 8 mm in diameter and 0.5 mm in thickness.
In 1994, EPRI completed the preliminary development of a non-empirical, purely analytical approach using a single small punch test to directly determine the fracture toughness Kic. The EPRI approach is a milestone in the development of the small punch test technique. By using the EPRI one step approach, the correlation between FATT (Fracture Appearance Transition Temperature) and Kic is not necessary anymore and accuracy increases by a factor two. In order to deliver a quick service to our clients, a software program SPT has been compiled and tested at KEMA. By putting in a load-deflection curve measured by a small punch test, the Kic is immediately obtained.
Benefit from the reduction of the degree of conservatism and extend the residual lifetime up to 100 per cent!
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