Application of Digital Image Correlation (DIC) in resonance machines for measuring fatigue crack growth
This paper presents a simple experimental procedure that greatly facilitates the use of digital image correlation (DIC) techniques in fatigue test conducted in resonant testing machines, without the need of test interruptions. This is possible due to the implementation of USB interface optical mic...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2014-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_44.pdf |
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| _version_ | 1850081519269314560 |
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| author | P. Lorenzino G. Beretta A. Navarro |
| author_facet | P. Lorenzino G. Beretta A. Navarro |
| author_sort | P. Lorenzino |
| collection | DOAJ |
| description | This paper presents a simple experimental procedure that greatly facilitates the use of digital image
correlation (DIC) techniques in fatigue test conducted in resonant testing machines, without the need of test
interruptions. This is possible due to the implementation of USB interface optical microscopes of very small
dimensions, so that they can be mounted on the specimen as a contact extensometer. Thus, the microscopesample
assembly oscillates at the resonance frequency of the test. This is how, although the resonant testing
machine is in motion, and although the specimen is subjected to fatigue, changing its dimensions according to
the applied load, the acquired image is completely static. This allows the evaluation of the plastic deformations
generated by the crack growth, avoiding the elastic ones. Preliminary results on monitoring cracks with this
technique on flat specimens with cylindrical notches of 1050 aluminium alloy are also presented. |
| format | Article |
| id | doaj-art-ea2289969e5a467287d59654f61fe752 |
| institution | DOAJ |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2014-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-ea2289969e5a467287d59654f61fe7522025-08-20T02:44:42ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932014-10-0183036937410.3221/IGF-ESIS.30.44Application of Digital Image Correlation (DIC) in resonance machines for measuring fatigue crack growthP. Lorenzino0G. Beretta1A. NavarroDpto. de Ingeniería de los Materiales. INSA de Lyon, FranceEscuela Técnica Superior de Ingeniería, Universidad de Sevilla.This paper presents a simple experimental procedure that greatly facilitates the use of digital image correlation (DIC) techniques in fatigue test conducted in resonant testing machines, without the need of test interruptions. This is possible due to the implementation of USB interface optical microscopes of very small dimensions, so that they can be mounted on the specimen as a contact extensometer. Thus, the microscopesample assembly oscillates at the resonance frequency of the test. This is how, although the resonant testing machine is in motion, and although the specimen is subjected to fatigue, changing its dimensions according to the applied load, the acquired image is completely static. This allows the evaluation of the plastic deformations generated by the crack growth, avoiding the elastic ones. Preliminary results on monitoring cracks with this technique on flat specimens with cylindrical notches of 1050 aluminium alloy are also presented.http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_44.pdfDigital Image CorrelationFatigue testResonance Machines |
| spellingShingle | P. Lorenzino G. Beretta A. Navarro Application of Digital Image Correlation (DIC) in resonance machines for measuring fatigue crack growth Fracture and Structural Integrity Digital Image Correlation Fatigue test Resonance Machines |
| title | Application of Digital Image Correlation (DIC) in resonance machines for measuring fatigue crack growth |
| title_full | Application of Digital Image Correlation (DIC) in resonance machines for measuring fatigue crack growth |
| title_fullStr | Application of Digital Image Correlation (DIC) in resonance machines for measuring fatigue crack growth |
| title_full_unstemmed | Application of Digital Image Correlation (DIC) in resonance machines for measuring fatigue crack growth |
| title_short | Application of Digital Image Correlation (DIC) in resonance machines for measuring fatigue crack growth |
| title_sort | application of digital image correlation dic in resonance machines for measuring fatigue crack growth |
| topic | Digital Image Correlation Fatigue test Resonance Machines |
| url | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_44.pdf |
| work_keys_str_mv | AT plorenzino applicationofdigitalimagecorrelationdicinresonancemachinesformeasuringfatiguecrackgrowth AT gberetta applicationofdigitalimagecorrelationdicinresonancemachinesformeasuringfatiguecrackgrowth AT anavarro applicationofdigitalimagecorrelationdicinresonancemachinesformeasuringfatiguecrackgrowth |