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Why do cracks avoid each other?

Melin, Solveig LU (1983) In International Journal of Fracture 23(1). p.37-45
Abstract
The experimentally known phenomenon that originally collinear mode I cracks seem to avoid each other before coalescence is studied by investigating the stability of straight crack paths. To this end a periodic array of approximately collinear but slightly curved cracks is considered. Stress intensity factors for modes I and II are derived and the growth of originally straight cracks under mode I conditions is studied after introduction of a disturbance that forces the cracks to deviate from a straight path. It is shown that the straight crack path is unstable, i.e. that tip to tip coalescence will not take place.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Fracture
volume
23
issue
1
pages
37 - 45
publisher
Springer
external identifiers
  • scopus:0020809281
ISSN
0376-9429
DOI
10.1007/BF00020156
language
English
LU publication?
yes
id
da693530-4f8c-4aff-9223-fc76ceb96d48 (old id 1515237)
date added to LUP
2010-01-07 11:33:23
date last changed
2017-07-30 04:49:58
@article{da693530-4f8c-4aff-9223-fc76ceb96d48,
  abstract     = {The experimentally known phenomenon that originally collinear mode I cracks seem to avoid each other before coalescence is studied by investigating the stability of straight crack paths. To this end a periodic array of approximately collinear but slightly curved cracks is considered. Stress intensity factors for modes I and II are derived and the growth of originally straight cracks under mode I conditions is studied after introduction of a disturbance that forces the cracks to deviate from a straight path. It is shown that the straight crack path is unstable, i.e. that tip to tip coalescence will not take place.},
  author       = {Melin, Solveig},
  issn         = {0376-9429},
  language     = {eng},
  number       = {1},
  pages        = {37--45},
  publisher    = {Springer},
  series       = {International Journal of Fracture},
  title        = {Why do cracks avoid each other?},
  url          = {http://dx.doi.org/10.1007/BF00020156},
  volume       = {23},
  year         = {1983},
}