2013 Fiscal Year Final Research Report
Development of accurate, fast, full-field displacement and strain measurement method for large-scale structures based on phase information of repeated patterns
| Project/Area Number |
24760095
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
RI Shien 独立行政法人産業技術総合研究所, 計測フロンティア研究部門, 主任研究員 (70509710)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 変位ひずみ分布計測 / 繰り返し模様 / 光学的計測 / サンプリングモアレ法 / 位相解析 / フーリエ変換 / 大型構造物 |
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| Research Abstract |
In this study, an accurate and full-field displacement and strain measurement method was developed by using a digital camera and repeated patterns. Displacement experimental results demonstrated that the measurement accuracy is the order of 1/1000 pitch of the repeated pattern. Computer simulation and tensile experimental results showed that strain measurement can be performed accurately in elastic-plastic region of small strain. For a practical application, a deflection measurement of a long bridge was performed. These results indicated that centimeter order deformation across a 400-meter-long bridge was measured successfully when heavy trucks pass though the bridge.
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