Experimental Study on the Dynamic Caustics of the Explosive Load Precrack Propagation Law

DOI

10.2991/icseee-15.2016.94How to use a DOI?

Keywords

caustics; precrack; explosion

Abstract

By making use of the experimental system of explosive load digital laser dynamic caustics, it is to carry out dynamic crack analysis for the tip crack initiation and propagation process of precracks near the blast hole and study the directional crack controlled blastting mechanism, thus obtaining changes of the displacement, speed, acceleration, stress intensity factor values of the proecrack propagation in the penetration process of the precrack and blast hole. The results indicate that crack propagation displacement of the precrack direction on the premise of the penetration experiment of the precrack and blast hole is far larger than the non-precrack direction, and the caustics speckle diameter of the crack tip, the propagation speed, and the stress intensity factor value show an overall declining trend with the reach of a small peak in the middle and later period of the propagation process.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhengbin Yan
AU  - Jinjing Zuo
AU  - Yanbin Wang
PY  - 2016/04
DA  - 2016/04
TI  - Experimental Study on the Dynamic Caustics of the Explosive Load Precrack Propagation Law
BT  - Proceedings of the 2015 4th International Conference on Sustainable Energy and Environmental Engineering
PB  - Atlantis Press
SP  - 557
EP  - 565
SN  - 2352-5401
UR  - https://doi.org/10.2991/icseee-15.2016.94
DO  - 10.2991/icseee-15.2016.94
ID  - Yan2016/04
ER  -