The limits of the use of the ultra high speed Cranz-Schardin camera, direct shadow visualization of a fracture

Autor: R. Pixa, R. Schirrer
Rok vydání: 1984
Předmět:
Zdroj: International Journal of Fracture. 26:387-393
ISSN: 1573-2673
0376-9429
DOI: 10.1007/bf00962973
Popis: This paper shows the limits in using the Cranz-Schardin high speed camera for photographing catastrophic fracture in materials with strong photoelastic constants. There is a maximum permissible distance between the sample and the observation plane if one wishes to use the elastic and elastic-plastic fracture theories. We develop a shadow method in which successive pictures of the fracture are superimposed on a photographic plate set near the sample. The results allow an accurate quantitative measurement of either the fracture prppagation or the energy of fracture.
Databáze: OpenAIRE