Effects of vertical and horizontal reflected blast stress waves on running cracks by caustics method

•Effects of vertical and horizontal reflected blast waves on cracks were studied.•The geometry of caustics patterns was studied.•Distorted caustics patterns were precisely interpreted.•SIFs measurements by caustics method in blast-induced fracture are discussed. Wave reflection which is inevitable i...

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Veröffentlicht in:	Engineering fracture mechanics 2019-05, Vol.212 (C), p.164-179
Hauptverfasser:	Qiu, Peng, Yue, Zhongwen, Yang, Renshu, Li, J.C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Blast Caustics method Crack arrest Crack propagation Crack tips Dynamic fracture Explosions Fracture mechanics Geometrical optics High speed photography P waves PMMA Polymethyl methacrylate Reflected wave S waves Stress intensity factors Stress waves Wave fronts Wave propagation Wave reflection
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