A method to determine the macroscopic toughness scatter of brittle materials
In: International journal of fracture, Jg. 125 (2004), Heft 1-2, S. 171-187
Online
academicJournal
- print, 1 p.1/4
Zugriff:
An experimental procedure is developed to determine the scatter of the macroscopic toughness of brittle materials. First, samples are precracked to obtain a sharp precrack. The toughness is then determined by using a standard three-point flexural test. Digital image correlation is used to analyze displacement fields of cracked samples. Based upon the resolution and the spatial resolution of the measurement technique, a detection criterion is proposed and validated. It allows for an accurate estimate of the crack tip location so that the presence of a crack and its size at arrest can be monitored. As an example, the toughness distribution of 18 samples made of silicon carbide is evaluated. By using a simple macro-micro transition, an analysis of the scatter in toughness is related to that in strength for the material with no macrocracks.
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A method to determine the macroscopic toughness scatter of brittle materials
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Autor/in / Beteiligte Person: | FOROUIN, Pascal ; ROTA, Laurent ; CHARLES, Yann ; HILD, Francois |
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Zeitschrift: | International journal of fracture, Jg. 125 (2004), Heft 1-2, S. 171-187 |
Veröffentlichung: | Heidelberg: Springer, 2004 |
Medientyp: | academicJournal |
Umfang: | print, 1 p.1/4 |
ISSN: | 0376-9429 (print) |
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