XCT Study of Cone Crack Damage in Multilayered Transparent Panel Structures and Comparison to Modeling

2012 ◽  
Author(s):  
William H. Green ◽  
Raymond E. Brennan ◽  
Costas F. Fountzoulas
Keyword(s):  
Cone Crack

Effect of Particle Impact Velocity on Cone Crack Shape in Ceramic Material

2005 ◽  
Vol 297-300 ◽  
pp. 1321-1326 ◽  
Author(s):  
Sang Yeob Oh ◽  
Hyung Seop Shin
Keyword(s):  
Impact Velocity ◽  
Computational Simulation ◽  
Back Surface ◽  
Particle Impact ◽  
Cone Crack ◽  
Crack Shape ◽  
The Impact ◽  
Particle Impact Velocity ◽  
Sic Particle ◽  
Ring Cracks

The damage behaviors induced in a SiC by a spherical particle impact having a different material and size were investigated. Especially, the influence of the impact velocity of a particle on the cone crack shape developed was mainly discussed. The damage induced by a particle impact was different depending on the material and the size of a particle. The ring cracks on the surface of the specimen were multiplied by increasing the impact velocity of a particle. The steel particle impact produced the larger ring cracks than that of the SiC particle. In the case of the high velocity impact of the SiC particle, the radial cracks were generated due to the inelastic deformation at the impact site. In the case of the larger particle impact, the morphology of the damages developed were similar to the case of the smaller particle one, but a percussion cone was formed from the back surface of the specimen when the impact velocity exceeded a critical value. The zenithal angle of the cone cracks developed into the SiC decreased monotonically as the particle impact velocity increased. The size and material of a particle influenced more or less on the extent of the cone crack shape. An empirical equation was obtained as a function of impact velocity of the particle, based on the quasi-static zenithal angle of the cone crack. This equation will be helpful to the computational simulation of the residual strength in ceramic components damaged by the particle impact.

A computer simulation study of Hertzian cone crack growth

1974 ◽  
Vol 10 (1) ◽  
pp. 1-16 ◽  
Author(s):  
B. R. Lawn ◽  
T. R. Wilshaw ◽  
N. E. W. Hartley
Keyword(s):  
Computer Simulation ◽  
Crack Growth ◽  
Simulation Study ◽  
Computer Simulation Study ◽  
Cone Crack ◽  
Hertzian Cone

Cone Crack Nucleation at Sharp Contacts

1992 ◽  
Vol 75 (10) ◽  
pp. 2877-2880 ◽  
Author(s):  
Rajan Tandon ◽  
Robert F. Cook
Keyword(s):  
Crack Nucleation ◽  
Cone Crack

On the Hertzian fatigue cone crack propagation in ceramics

1996 ◽  
Vol 79 (3) ◽  
pp. 295-307 ◽  
Author(s):  
Shoufeng Hu ◽  
Zheng Chen ◽  
John J. Mecholsky
Keyword(s):  
Crack Propagation ◽  
Cone Crack

Influence of the Cone Crack Geometry on the Strength Degradation

2007 ◽  
Vol 333 ◽  
pp. 255-258
Author(s):  
Luca Ceseracciu ◽  
Marc Anglada ◽  
Emilio Jiménez-Piqué
Keyword(s):  
Residual Stresses ◽  
Compressive Residual Stress ◽  
Damage Tolerance ◽  
Strength Degradation ◽  
Intensity Factors ◽  
Cone Crack ◽  
Incremental Model ◽  
Test Models ◽  
Finite Elements Model ◽  
Laminated Material

The presence of surface compressive residual stress in a laminated material enhance the resistance of the component by reducing the stress intensity factors acting on the cracks -either natural or artificial- existing in the surface. Fissures in the form of cone crack are often generated by blunt contact in service, that can affect the functionality as well as the strength of the material. In this work, a two-steps analysis of the effect of residual stresses on the geometry of cone crack and how this change in geometry influences the far-field strength of the material was performed by means of a Finite Elements model and of experimental observations. In the first part, an automatic incremental model was formulated, which allowed to establish the crack shapes that were used in the second part for simple four-points test models. It was observed that residual stresses change considerably the crack shape, with important implications in the design of contact-damage tolerance, and that this reflects on corresponding changes in the strength.

Sign in / Sign up

Export Citation Format

Share Document