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Fundamental Study on Evaluation of Axial Force of High Strength Bolts by Digital Image Processing

 Fundamental Study on Evaluation of Axial Force of High Strength Bolts by Digital Image Processing
Auteur(s): , , , ,
Présenté pendant IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024, publié dans , pp. 1334-1342
DOI: 10.2749/sanjose.2024.1334
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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 ...
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Détails bibliographiques

Auteur(s): (Takigami Steel Construction Co., Ltd., Aichi, JAPAN )
(Takigami Steel Construction Co., Ltd., Aichi, JAPAN )
(Takigami Steel Construction Co., Ltd., Aichi, JAPAN )
(Zoomscape Inc., Shiga, JAPAN)
(Kyoto University, Kyoto, JAPAN)
(Osaka Metropolitan University, Osaka, JAPAN)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024
Publié dans:
Page(s): 1334-1342 Nombre total de pages (du PDF): 9
Page(s): 1334-1342
Nombre total de pages (du PDF): 9
DOI: 10.2749/sanjose.2024.1334
Abstrait:

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.