Development of Ultrasonic Axial Bolting Force Inspection System for Turbine Bolts in Thermal Power Plants
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概要
- 論文の詳細を見る
An ultrasonic axial bolting force inspection system is developed for the control of bolts used on turbine outercasings in a thermal power plant. The ultrasonic time of flight through the bolt under stress is analysed using acoustoelastic law. The proportional constant, conventionally called the material constant, is determined by an acoustoelastic constant k and Young's modulus E as (1- kE). Measurements of k for some kinds of steel bolts revealed that k is approximately the same value (-1.1x1O^<-11> m^2/N) independent of heat treatment. Based on these results, the ultrasonic axial bolting force inspection system is developed. Applying this system to turbine bolts, it is found that the bolts could be controlled more precisely than ever.
- 一般社団法人日本機械学会の論文
- 1992-04-15
著者
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Kanaya Akihiro
Research Laboratory Kyushu Electric Power Co. Inc.
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Ogura Y
Nec Corp. Kanagawa Jpn
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Hasuo Yasunori
Kyuden Sangyo Co. Inc.
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Suzuki Yoshiaki
Fa Factory Hitachi Construction Machinery Co. Ltd.
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SUDA Masataka
Research Laboratory, Kyushu Electric Power Co.,Inc.
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OGURA Yukio
FA Factory, Hitachi Construction Machinery Co.,Ltd.
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TAKISHITA Toshio
FA Factory, Hitachi Construction Machinery Co.,Ltd.
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Suda Masataka
Research Laboratory Kyushu Electric Power Co. Inc.
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Takishita Toshio
Fa Factory Hitachi Construction Machinery Co. Ltd.
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- Development of Ultrasonic Axial Bolting Force Inspection System for Turbine Bolts in Thermal Power Plants