Determination of Stress Intensity Factors and J integral based on Digital Image Correlation
Digital image correlation (DIC) is a technique in experimental mechanics to acquire full-field measurement data of displacements and deformations from the surface of specimens or components. Especially for the investigations of cracks it provides additional benefits. The actually present deformation...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2019-05-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2410 |
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| _version_ | 1841562892823953408 |
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| author | Eric Breitbarth Tobias Strohmann Michael Besel Stefan Reh |
| author_facet | Eric Breitbarth Tobias Strohmann Michael Besel Stefan Reh |
| author_sort | Eric Breitbarth |
| collection | DOAJ |
| description | Digital image correlation (DIC) is a technique in experimental mechanics to acquire full-field measurement data of displacements and deformations from the surface of specimens or components. Especially for the investigations of cracks it provides additional benefits. The actually present deformation field in the vicinity of the crack tip can be obtained which directly reflects for example crack closure effects or plasticity. Against this background the paper summarizes a procedure to compute the J integral and the stress intensity factors KI and KII based on DIC data. For this purpose the J and interaction integral are computed as line and domain integrals. Through experiments it is shown that the domain integral is less affected by scatter of the DIC data. Furthermore, the specific domain, facet sizes and facet distances slightly influence the results. |
| format | Article |
| id | doaj-art-fb44eeeeedfd4e45bb392f07f69ae870 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-05-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-fb44eeeeedfd4e45bb392f07f69ae8702025-01-03T00:39:47ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-05-011349Determination of Stress Intensity Factors and J integral based on Digital Image CorrelationEric Breitbarth0Tobias Strohmann1Michael Besel2Stefan Reh3German Aerospace Center (DLR)German Aerospace Center (DLR)German Aerospace Center (DLR)German Aerospace Center (DLR)Digital image correlation (DIC) is a technique in experimental mechanics to acquire full-field measurement data of displacements and deformations from the surface of specimens or components. Especially for the investigations of cracks it provides additional benefits. The actually present deformation field in the vicinity of the crack tip can be obtained which directly reflects for example crack closure effects or plasticity. Against this background the paper summarizes a procedure to compute the J integral and the stress intensity factors KI and KII based on DIC data. For this purpose the J and interaction integral are computed as line and domain integrals. Through experiments it is shown that the domain integral is less affected by scatter of the DIC data. Furthermore, the specific domain, facet sizes and facet distances slightly influence the results.https://www.fracturae.com/index.php/fis/article/view/2410Fatigue crackDigital Image CorrelationJ integralInteraction integralAluminum |
| spellingShingle | Eric Breitbarth Tobias Strohmann Michael Besel Stefan Reh Determination of Stress Intensity Factors and J integral based on Digital Image Correlation Fracture and Structural Integrity Fatigue crack Digital Image Correlation J integral Interaction integral Aluminum |
| title | Determination of Stress Intensity Factors and J integral based on Digital Image Correlation |
| title_full | Determination of Stress Intensity Factors and J integral based on Digital Image Correlation |
| title_fullStr | Determination of Stress Intensity Factors and J integral based on Digital Image Correlation |
| title_full_unstemmed | Determination of Stress Intensity Factors and J integral based on Digital Image Correlation |
| title_short | Determination of Stress Intensity Factors and J integral based on Digital Image Correlation |
| title_sort | determination of stress intensity factors and j integral based on digital image correlation |
| topic | Fatigue crack Digital Image Correlation J integral Interaction integral Aluminum |
| url | https://www.fracturae.com/index.php/fis/article/view/2410 |
| work_keys_str_mv | AT ericbreitbarth determinationofstressintensityfactorsandjintegralbasedondigitalimagecorrelation AT tobiasstrohmann determinationofstressintensityfactorsandjintegralbasedondigitalimagecorrelation AT michaelbesel determinationofstressintensityfactorsandjintegralbasedondigitalimagecorrelation AT stefanreh determinationofstressintensityfactorsandjintegralbasedondigitalimagecorrelation |