Evaluation of Interlaminar Damage and Crack Propagation through Digital Image Correlation Method |
| Journal |
Key Engineering Materials (Volume 399) |
| Volume |
Advances in Strength of Materials |
| Edited by |
Liviu MARSAVINA |
| Pages |
105-112 |
| DOI |
10.4028/www.scientific.net/KEM.399.105 |
| Online since |
October, 2008 |
| Authors |
Dan Mihai Constantinescu,
Marin Sandu,
Liviu Marsavina,
Radu Negru,
Matei Constantin Miron,
Dragos Alexandru Apostol
|
| Keywords |
Crack Propagation, Digital Image Correlation, Local Damage, Sandwich Composite |
| Abstract |
Interface damage characterization and interlaminar failure of sandwich specimens with two initial interlaminar defects (inserts) is done by using the digital image correlation method. Mode I tests reveal interesting particularities on damage localization and unstable crack propagation. After analyzing the experimentally obtained results, we propose as a failure parameter the local strain at the crack tip or, alternatively, the crack tip opening displacement which quantifies the non-linear phenomena. |
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