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Error correction in 2D-digital image correlation strain measurements due to out-of-plane motion
Thesis (MEng)--Stellenbosch University, 2023.
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| Format: | Thesis |
| Language: | en_ZA en_ZA |
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Stellenbosch : Stellenbosch University
2023
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| _version_ | 1867614138901987328 |
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| access_status_str | Open Access |
| author | Visser, C. |
| author2 | Venter, G. |
| author_browse | Venter, G. Visser, C. |
| author_facet | Venter, G. Visser, C. |
| author_sort | Visser, C. |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng)--Stellenbosch University, 2023. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/129099 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA en_ZA |
| last_indexed | 2026-06-10T12:47:17.083Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/129099 Error correction in 2D-digital image correlation strain measurements due to out-of-plane motion Visser, C. Venter, G. Neaves, Melody Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering. Digital image correlation Surface deformation measurements Surfaces, Deformation of Two-dimensional materials Thesis (MEng)--Stellenbosch University, 2023. ENGLISH ABSTRACT: Digital image correlation (DIC) can be performed as eithermulti-camera stereo-DIC or single-camera 2D-DIC. Stereo-DIC is generally preferred as it corrects for errors from out-of-plane motion, giving it superior accuracy, despite 2DDIC being both computationally and financially less expensive, and being more user-friendly. This study proposes a strain gauge-based error compensation method for the compensation of strain errors in 2D-DIC due to out-of plane motion. The method was initially developed by considering the theoretical strain errors from out-of-plane motion in 2D-DIC and was then applied in a numerical simulation as a proof-of-concept. Two sets of validation experiments were then performed on two different specimen geometries which demonstrated an improvement in the accuracy of the 2D-DIC strain data in both cases. This makes 2D-DIC a more attractive option for measuring fullfield strains, particularly in cases where stereo-DIC is not an option. AFRIKAANSE OPSOMMING: Digitale beeld korrelasie (“digital image correlation” of “DIC”) kan gebruik word in die vorm van meerkamera stereo-DIC of veelvoudkamera 2D-DIC. Stereo-DIC word oor die algeneem verkies bo 2D-DIC, omdat dit buitevlakbeweging in ag neem en dus dit ’n beter akkuraatheid gee. Alhoewel 2D-DIC gebruikersvriendeliker, goedkoper asook minder berekeningintensief is. Hierdie studie stel daarom ’n rekstrokie-gebaseerde foutkompensasiemetode voor vir die korreksie van vervormingsdata in 2D-DIC wat veroorsaak is deur buitevlakbeweging. Die metode was eerstens ontwikkel deur teoretiese foute van buitevlakbeweging in 2D-DIC vervormingsdata te bestudeer en was dan in ’n numeriese simulasie toegepas om die konsep te bewys. Twee stelle eksperimente is toe uitgevoer op twee verskillende monstersgeometrieë om die metode te bevestig en die uitslae van die toetse het ’n verbetering in die akkuraatheid van die 2D-DIC vervorming in beide toetsgevalle gewys. Dit maak 2D-DIC ’n meer aantreklike opsie vir die meting van vervorming veral in gevalle waar stereo-DIC nie kan gebruik word nie. Masters 2023-11-22T17:26:33Z 2024-01-08T22:22:15Z 2023-11-22T17:26:33Z 2024-01-08T22:22:15Z 2023-11 Thesis https://scholar.sun.ac.za/handle/10019.1/129099 en_ZA en_ZA Stellenbosch University xvii, 123 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Digital image correlation Surface deformation measurements Surfaces, Deformation of Two-dimensional materials Visser, C. Error correction in 2D-digital image correlation strain measurements due to out-of-plane motion |
| title | Error correction in 2D-digital image correlation strain measurements due to out-of-plane motion |
| title_full | Error correction in 2D-digital image correlation strain measurements due to out-of-plane motion |
| title_fullStr | Error correction in 2D-digital image correlation strain measurements due to out-of-plane motion |
| title_full_unstemmed | Error correction in 2D-digital image correlation strain measurements due to out-of-plane motion |
| title_short | Error correction in 2D-digital image correlation strain measurements due to out-of-plane motion |
| title_sort | error correction in 2d digital image correlation strain measurements due to out of plane motion |
| topic | Digital image correlation Surface deformation measurements Surfaces, Deformation of Two-dimensional materials |
| url | https://scholar.sun.ac.za/handle/10019.1/129099 |
| work_keys_str_mv | AT visserc errorcorrectionin2ddigitalimagecorrelationstrainmeasurementsduetooutofplanemotion |