Some experimental observations of crack-tip mechanics with displacement data Article Swipe
Mehdi Mokhtari
,
Pablo Lopez‐Crespo
,
B. Moreno
,
M. Zanganeh
·
YOU?
·
· 2015
· Open Access
·
· DOI: https://doi.org/10.3221/igf-esis.33.18
YOU?
·
· 2015
· Open Access
·
· DOI: https://doi.org/10.3221/igf-esis.33.18
In the past two decades, crack-tip mechanics has been increasingly studied with full-field techniques. Within these techniques, Digital Image Correlation (DIC) has been most widely used due to its many advantages, to extract important crack-tip information, including Stress Intensity Factor (SIF), Crack Opening Displacement, J-integral, T-stress, closure level, plastic zone size, etc. However, little information is given in the literature about the experimental setup that provides best estimations for the different parameters. The current work aims at understanding how the experimental conditions used in DIC influence the crack-tip information extracted experimentally. The influence of parameters such as magnification factor, size of the images, position of the images with respect the crack-tip and size of the subset used in the correlation is studied. The influence is studied in terms of SIF and T-stress by using Williams’ model. The concept of determination of the K-dominance zone from experimental data has also explored. In this regard, cyclic loading on a fatigue crack in a compact tension (CT) specimen, made of aluminium 2024-T351 alloy, has been applied and the surface deformation ahead of the crack tip has been examined. The comparison between theoretical and experimental values of KI showed that the effect of subset size on the measured KI is negligible compared to the effect of size of the image.
Related Topics
Concepts
Digital image correlation
Crack tip opening displacement
Materials science
Crack closure
Displacement (psychology)
Stress intensity factor
Mechanics
Fracture mechanics
Displacement field
Deformation (meteorology)
Structural engineering
Crack growth resistance curve
Position (finance)
Composite material
Engineering
Physics
Finite element method
Psychology
Psychotherapist
Finance
Economics
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3221/igf-esis.33.18
- https://www.fracturae.com/index.php/fis/article/download/IGF-ESIS.33.18/1512
- OA Status
- diamond
- Cited By
- 4
- References
- 26
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W1535808896
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W1535808896Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.3221/igf-esis.33.18Digital Object Identifier
- Title
-
Some experimental observations of crack-tip mechanics with displacement dataWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2015Year of publication
- Publication date
-
2015-06-19Full publication date if available
- Authors
-
Mehdi Mokhtari, Pablo Lopez‐Crespo, B. Moreno, M. ZanganehList of authors in order
- Landing page
-
https://doi.org/10.3221/igf-esis.33.18Publisher landing page
- PDF URL
-
https://www.fracturae.com/index.php/fis/article/download/IGF-ESIS.33.18/1512Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
diamondOpen access status per OpenAlex
- OA URL
-
https://www.fracturae.com/index.php/fis/article/download/IGF-ESIS.33.18/1512Direct OA link when available
- Concepts
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Digital image correlation, Crack tip opening displacement, Materials science, Crack closure, Displacement (psychology), Stress intensity factor, Mechanics, Fracture mechanics, Displacement field, Deformation (meteorology), Structural engineering, Crack growth resistance curve, Position (finance), Composite material, Engineering, Physics, Finite element method, Psychology, Psychotherapist, Finance, EconomicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
4Total citation count in OpenAlex
- Citations by year (recent)
-
2023: 1, 2020: 2, 2019: 1Per-year citation counts (last 5 years)
- References (count)
-
26Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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