Uniaxial Static Stress Estimation for Concrete Structures Using Digital Image Correlation
This paper proposes a static stress estimation method for concrete structures, using the stress relaxation method (SRM) in conjunction with digital image correlation (DIC). The proposed method initially requires a small hole to be drilled in the concrete surface to induce stress relaxation around th...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-01-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/19/2/319 |
| _version_ | 1828395861491580928 |
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| author | Junhwa Lee Eun Jin Kim Seongwoo Gwon Soojin Cho Sung-Han Sim |
| author_facet | Junhwa Lee Eun Jin Kim Seongwoo Gwon Soojin Cho Sung-Han Sim |
| author_sort | Junhwa Lee |
| collection | DOAJ |
| description | This paper proposes a static stress estimation method for concrete structures, using the stress relaxation method (SRM) in conjunction with digital image correlation (DIC). The proposed method initially requires a small hole to be drilled in the concrete surface to induce stress relaxation around the hole and, consequently, a displacement field. DIC measures this displacement field by comparing digital images taken before and after the hole-drilling. The stress level in the concrete structure is then determined by solving an optimization problem, designed to minimize the difference between the displacement fields from DIC and the one from a numerical model. Compared to the pointwise measurements by strain gauges, the full-field displacement obtained by DIC provides a larger amount of data, leading to a more accurate estimation. Our theoretical results were experimentally validated using concrete specimens, demonstrating the efficacy of the proposed method. |
| first_indexed | 2024-12-10T08:19:23Z |
| format | Article |
| id | doaj.art-df46de23e3064b9e8146df4d4b946205 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-12-10T08:19:23Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-df46de23e3064b9e8146df4d4b9462052022-12-22T01:56:22ZengMDPI AGSensors1424-82202019-01-0119231910.3390/s19020319s19020319Uniaxial Static Stress Estimation for Concrete Structures Using Digital Image CorrelationJunhwa Lee0Eun Jin Kim1Seongwoo Gwon2Soojin Cho3Sung-Han Sim4School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, KoreaSchool of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, KoreaSchool of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, KoreaDepartment of Civil Engineering, University of Seoul, Seoul 02504, KoreaSchool of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, KoreaThis paper proposes a static stress estimation method for concrete structures, using the stress relaxation method (SRM) in conjunction with digital image correlation (DIC). The proposed method initially requires a small hole to be drilled in the concrete surface to induce stress relaxation around the hole and, consequently, a displacement field. DIC measures this displacement field by comparing digital images taken before and after the hole-drilling. The stress level in the concrete structure is then determined by solving an optimization problem, designed to minimize the difference between the displacement fields from DIC and the one from a numerical model. Compared to the pointwise measurements by strain gauges, the full-field displacement obtained by DIC provides a larger amount of data, leading to a more accurate estimation. Our theoretical results were experimentally validated using concrete specimens, demonstrating the efficacy of the proposed method.http://www.mdpi.com/1424-8220/19/2/319concretedigital image correlationstress relaxation method |
| spellingShingle | Junhwa Lee Eun Jin Kim Seongwoo Gwon Soojin Cho Sung-Han Sim Uniaxial Static Stress Estimation for Concrete Structures Using Digital Image Correlation Sensors concrete digital image correlation stress relaxation method |
| title | Uniaxial Static Stress Estimation for Concrete Structures Using Digital Image Correlation |
| title_full | Uniaxial Static Stress Estimation for Concrete Structures Using Digital Image Correlation |
| title_fullStr | Uniaxial Static Stress Estimation for Concrete Structures Using Digital Image Correlation |
| title_full_unstemmed | Uniaxial Static Stress Estimation for Concrete Structures Using Digital Image Correlation |
| title_short | Uniaxial Static Stress Estimation for Concrete Structures Using Digital Image Correlation |
| title_sort | uniaxial static stress estimation for concrete structures using digital image correlation |
| topic | concrete digital image correlation stress relaxation method |
| url | http://www.mdpi.com/1424-8220/19/2/319 |
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