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

• DOI: 10.2991/icseee-15.2016.94
• Publication Date: 2016-03-14T12:16:12Z
• Authors: Zhengbin Yan; Jinjing Zuo; Yanbin Wang
• Keywords: 0103 physical sciences; 01 natural sciences

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