An Analysis of Dynamic Crack Propagation and Arrest for a Material Having a Crack Speed Dependent Fracture Toughness

1974 ◽  
pp. 251-266 ◽  
Author(s):  
M. F. Kanninen
Keyword(s):  
Fracture Toughness ◽  
Crack Propagation ◽  
Dynamic Crack Propagation ◽  
Dynamic Crack ◽  
Crack Speed ◽  
Crack Propagation And Arrest

scholarly journals Non steady-state intersonic cracks in elastomer membranes under large static strain

2021 ◽  
Author(s):  
Thomas Corre ◽  
Michel Coret ◽  
Erwan Verron ◽  
Bruno Leblé
Keyword(s):  
Steady State ◽  
Crack Propagation ◽  
Crack Path ◽  
Stretch Ratio ◽  
Dynamic Crack Propagation ◽  
Dynamic Crack ◽  
Crack Speed ◽  
Propagation Regime ◽  
Acceleration And Deceleration ◽  
International Audience

International audience Dynamic crack propagation in elastomer membranes is investigated; the focus is laid on cracks reaching the speed of shear waves in the material. The specific experimental setup developed to measure crack speed is presented in details. The protocol consists in (1) stretching an elastomer membrane under planar tension loading conditions, then (2) initiating a small crack on one side of the membrane. The crack speed is measured all along the crack path in both reference and actual configurations, including both acceleration and deceleration phases, i.e. non steady-state crack propagation phases. The influence of the prescribed stretch ratio on crack speed is analysed in the light of both these new experiments and the few previously published studies. Conclusions previously drawn for steady-state crack growth are extended to non steady-state conditions: stretch perpendicular to the crack path governs crack speed in intersonic crack propagation regime, and the role of the stretch in crack direction is minor.

scholarly journals Dynamic Fracture Toughness of a Unidirectional Graphite/Epoxy Composite

2001 ◽  
Author(s):  
C. Liu ◽  
A. J. Rosakis ◽  
M. G. Stout
Keyword(s):  
Fracture Toughness ◽  
Composite Material ◽  
Crack Propagation ◽  
Epoxy Composite ◽  
Crack Tip ◽  
Dynamic Crack Propagation ◽  
Mode I ◽  
Dynamic Crack ◽  
Mode I Fracture ◽  
Mode I Fracture Toughness

Abstract In this investigation, we studied the process of dynamic crack propagation in a fiber-reinforced composite material using the optical Coherent Gradient Sensing (CGS) technique combined with high-speed photography. The mode-I fracture toughness of the unidirectional graphite/epoxy composite, IM7/8551-7, as a function of the crack-tip speed, was measured quantitatively. It was found that up to the Rayleigh wave speed of the composite material, the mode-I fracture toughness is a decreasing function of the crack-tip velocity. This behavior is similar to that observed in the dynamic crack propagation along interfaces between two homogeneous solids.

Specimen size effects on dynamic crack propagation and arrest in DCB specimens

1991 ◽  
Vol 39 (4) ◽  
pp. 757-767 ◽  
Author(s):  
Nishioka Toshihisa ◽  
Murakami Tatsuyuki ◽  
Uchiyama Hidetoshi ◽  
Sakakura Keigo
Keyword(s):  
Crack Propagation ◽  
Size Effects ◽  
Specimen Size ◽  
Dynamic Crack Propagation ◽  
Dynamic Crack ◽  
Crack Propagation And Arrest
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