| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Donato, Gustavo Henrique Bolognesi
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2018Validity limits of the one-parameter elastic-plastic fracture mechanics (J-integral) considering SE(B), C(T) and clamped SE(T) specimenscitations
- 2018Ductile fracture of advanced pipeline steels: study of stress states and energies in dynamic impact specimens - CVN and DWTTcitations
- 2018Texture Analysis for Crack Detection in Fracture Mechanicscitations
- 2018Effects of manufacturing plastic prestrains found on calendered and UOE pipes and pressure vessels on structural integrity assessments regarding fatigue crack growth and LBBcitations
- 2016Reverse strain-induced martensitic transformation of the ferrite to austenite in duplex stainless steelscitations
- 2015Influence of loading frequency on the fatigue behaviour of coir fibre reinforced PP compositecitations
- 2014Applicability of Precracked Charpy Specimens for Determining Fatigue Crack Growth and J-R Properties: Experiments and Assessment of K and J Dominance
- 2012Effects of Plastic Deformation on Fatigue Life of Superduplex Steel Tube Umbilicalcitations
- 2012Applicability of SE(T) and SE(B) Fracture Specimens in Crack Growth Measurements of Pipeline Girth Weldscitations
- 2011Fatigue Life Estimation of Welded Joints Including the Effects of Crack Closure Phenomenacitations
- 2009Effects of Weld Strength Mismatch on Estimation Procedures for J Fracture Parameter Using Clamped SE(T) Specimens
- 2009Effects of weld strength mismatch on J and CTOD estimation procedure for SE(B) specimenscitations
- 2008A FAD-Based Procedure for Defect Assessments of Welded Structures Including Effects of Weld Strength Mismatch: Micromechanics Approach and Application to Pipeline Girth Welds
- 2007Effects of Weld Strength Mismatch on Estimation Procedures for J and CTOD Fracture Parameters Using SE(B) Specimenscitations
Places of action
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article
Texture Analysis for Crack Detection in Fracture Mechanics
Abstract
In the context of the metal-mechanic industry, there is a strong demand for material behavior measuring methods in the presence of cracks under stress conditions. This behavior is usually quantified by means of fracture toughness tests using parameters such as the stress intensity factor K, the CTOD, or the J integral. Regardless of the parameters used to quantify fracture toughness, all tests require knowledge of the correct length of the existing fatigue pre-crack in the sample that generated the failure. Hence, most laboratories have adopted visual measurement methods using a stereoscopic magnifying glass or a profile projector. Additional techniques, such as the use of heat tinting, help users and researchers to visualize the stable crack growth front. With the improvement in image processing and computer vision techniques, the present paper proposes the application of a new method for border detection by texture analysis, in order to get the corresponding contour of the crack front in postmortem analyses of SE(B) samples with high precision. The results suggest that the proposed method could be applied with high precision to images of fracture toughness tests for crack length measurement, having achieved a discrimination rate of 98%. The results also suggest that the method can be applied to samples that have not undergone heat tinting.