| Autor: |
Tashkinov, Mikhail A. |
| Předmět: |
|
| Zdroj: |
ECCOMAS Congress 2016 Proceedings; 2016, Issue 1, p1950-1958, 9p |
| Abstrakt: |
Composite materials are widely used in a broad field of applications due to their unique properties. However, development and propagation of inherent microstructural defects occurred in composites during their manufacturing or exploitation can be critical for overall performance of structural elements. Failure of composite structures can be predicted by creation of advanced monitoring systems utilizing sensor elements. One of the promising technologies is based on the optical fibre sensors with Bragg gratings, which are being embedded between the plies and can measure the changes of internal mechanical state as well as some physical properties. In order to be able to capture the growth of the defects, it is necessary to evaluate the distance between a defect and the sensor at which the latter can measure the respective state changes. This can be done by preliminary numerical modelling of defects behaviour. The scope of this work is numerical studies of the delamination growth in GFRP composite plate subjected to compression load using finite element analysis. Virtual crack closure technique was used as a computational instrument for delamination modelling. Evaluation of the damage effect on the internal strain fields was performed. Recommendation for FBG sensors positions were developed basing on specifics of strain field changes in the plies. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
