The limits of the use of the ultra high speed Cranz-Schardin camera, direct shadow visualization of a fracture
Autor: | R. Pixa, R. Schirrer |
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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 |
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