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On the Small Crack Fracture Mechanics.

Ståhle, P. LU (1983) In International Journal of Fracture 22(3). p.203-216
Abstract
The limit of validity of linear fracture mechanics is specified by the minimum allowable crack length through an ASTM convention. Extension into the non-linear region ought to imply an extension towards smaller allowable Cracks. In order to elucidate the question "How short is the smallest crack that fits the methods of fracture mechanics, and how do shorter cracks than that behave?" a pilot investigation is carried out. The process region is modelled as a Barenblatt line region and plastic flow off-side the process region is neglected. Results show that instability occurs before the process region is fully developed (as at large cracks) if the crack is short. This implies large deviations from the ... (More)
The limit of validity of linear fracture mechanics is specified by the minimum allowable crack length through an ASTM convention. Extension into the non-linear region ought to imply an extension towards smaller allowable Cracks. In order to elucidate the question "How short is the smallest crack that fits the methods of fracture mechanics, and how do shorter cracks than that behave?" a pilot investigation is carried out. The process region is modelled as a Barenblatt line region and plastic flow off-side the process region is neglected. Results show that instability occurs before the process region is fully developed (as at large cracks) if the crack is short. This implies large deviations from the large crack fracture mechanics if the crack is very small. Even cracks of infinitesimal length are included in the study. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Fracture
volume
22
issue
3
pages
14 pages
publisher
Springer
external identifiers
  • scopus:0020783079
ISSN
0376-9429
language
English
LU publication?
yes
id
45445fcd-d914-4b0d-94d3-1147bc9455b8
date added to LUP
2019-06-17 14:25:52
date last changed
2021-01-03 05:53:49
@article{45445fcd-d914-4b0d-94d3-1147bc9455b8,
  abstract     = {{The  limit of validity of linear fracture mechanics is specified  by  the minimum allowable crack  length through an ASTM  convention. Extension  into  the non-linear region ought  to  imply an extension  towards  smaller allowable Cracks.  In  order  to  elucidate  the  question  "How  short  is  the  smallest  crack  that  fits  the  methods  of  fracture mechanics, and how do shorter cracks than that behave?" a pilot investigation is carried out. The process region is modelled  as  a  Barenblatt line region  and plastic flow off-side  the process  region  is neglected. Results  show  that instability occurs before the process region is fully developed (as at large cracks) if  the crack is short. This implies large deviations from  the  large  crack  fracture mechanics  if the  crack  is  very  small. Even  cracks  of infinitesimal length are included in the study.}},
  author       = {{Ståhle, P.}},
  issn         = {{0376-9429}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{203--216}},
  publisher    = {{Springer}},
  series       = {{International Journal of Fracture}},
  title        = {{On the Small Crack Fracture Mechanics.}},
  url          = {{https://lup.lub.lu.se/search/files/66639143/On_the_small_crack_fracture_mechanics_.pdf}},
  volume       = {{22}},
  year         = {{1983}},
}