Fundamental Study on Evaluation of Axial Force of High Strength Bolts by Digital Image Processing
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Bibliographic Details
| Author(s): |
Tetsuya IIDA
(Takigami Steel Construction Co., Ltd., Aichi, JAPAN )
Hirotaka Oda (Takigami Steel Construction Co., Ltd., Aichi, JAPAN ) Apenyo DANIEL (Takigami Steel Construction Co., Ltd., Aichi, JAPAN ) Tetsu Ono (Zoomscape Inc., Shiga, JAPAN) Kunitomo Sugiura (Kyoto University, Kyoto, JAPAN) Takashi Yamaguchi (Osaka Metropolitan University, Osaka, JAPAN) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024 | ||||
| Published in: | IABSE Congress San José 2024 | ||||
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| Page(s): | 1334-1342 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/sanjose.2024.1334 | ||||
| Abstract: |
In this study, as a method of measuring the bolt axial force after tightening tension control bolts, the characteristic that the bolt head deforms greatly in proportion to the bolt axial force was utilized. There has been no case in which the displacement of the bolt head was captured by an image and converted to an axial force for measurement. Therefore, this study utilizes this feature to estimate the axial force only from the displacement accompanying the shape deformation of the bolt top during the two stages of bolt insertion, i.e. primary tightening and final tightening to determine from experiments how accurately the axial force can be evaluated. We confirmed that it is possible to detect changes in axial force by measuring the image displacement of the bolt head. |
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| Keywords: |
image processing axial force Tension control high-strength bolt Torque Digital camera
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