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Characteristics of non-asbestos gaskets at elevated temperatures and the estimation of the life of flange connections

Research Project

Project/Area Number 23560173
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Design engineering/Machine functional elements/Tribology
Research InstitutionNumazu National College of Technology

Principal Investigator

KOBAYASHI Takashi  沼津工業高等専門学校, 機械工学科, 教授 (10161994)

Co-Investigator(Kenkyū-buntansha) TSUJI Hirokazu  東京電機大学, 工学部, 教授 (10163841)
Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords機械要素 / ガスケット / フランジ締結体 / 高温 / 変形特性 / ボルト軸力 / 密封特性 / 寿命
Research Abstract

After the prohibition of the use of asbestos materials, PTFE-based gaskets are often employed in bolted flanged connections. The behavior of bolt force changes under thermal loading was experimentally examined. It is found that the bolt forces reduce at the first thermal loading due to the gasket flow. Once the gasket is settled, the bolt force changes depend on the difference of the thermal coefficients of flanges, bolts and gaskets.
An analytical model of a bolted flanged connection, in which the flanges, the bolts and the gasket are represented by spring constants, is proposed. The residual bolt forces can be estimated based on the analytical model of the bolted flanged connection and the deformation characteristic of the gasket. The results can be applied to ensure the integrity of flanged connections.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (16 results)

All 2014 2013 2011 Other

All Presentation (16 results)

  • [Presentation] Study on the Deflection of Gaskets and its Effects on Residual Bolt Forces and Tightness of Bolted Flanged Connections2014

    • Author(s)
      KOBAYASHI Takashi
    • Organizer
      ASME 2014 Pressure Vessels & Piping Division Conference
    • Place of Presentation
      (発表確定)
    • Related Report
      2013 Final Research Report
  • [Presentation] STUDY ON THE DEFLECTION OF GASKETS AND ITS EFFECTS ON RESIDUAL BOLT FORCES AND TIGHTNESS OF BOLTED FLANGED CONNECTIONS2014

    • Author(s)
      Takashi KOBAYASHI
    • Organizer
      ASME 2014 Pressure Vessels & Piping Division Conference
    • Place of Presentation
      Hyatt Regency Orange County(Anaheim, U.S.A.)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 高温におけるフランジ締結体のガスケット変形量の測定2013

    • Author(s)
      小林隆志、佐藤広嗣、鈴木洋輔、辻裕一
    • Organizer
      日本機械学会山梨講演会
    • Related Report
      2013 Final Research Report
  • [Presentation] 温度変動下でのフランジ締結体のボルト軸力変化2013

    • Author(s)
      小林隆志、石田裕哉、糸井克豊、平塚雅章、西浦謙剛、森本吏一
    • Organizer
      日本機械学会山梨講演会
    • Related Report
      2013 Final Research Report
  • [Presentation] ITOI Katsutoyo, Deflection of Gaskets and its Effect on Tightness of Flanged Connections in Long Term2013

    • Author(s)
      KOBAYASHI Takashi, NISHIURA Kengou, HIRATSUKA Masaaki
    • Organizer
      ASME 2013 Pressure Vessels & Piping Division Conference
    • Related Report
      2013 Final Research Report
  • [Presentation] Deflection of Gaskets and its Effect on Tightness of Flanged Connections in Long Term2013

    • Author(s)
      HIRATSUKA Masaaki, KOBAYASHI Takashi, NISHIURA Kengou, ITOI Katsutoyo
    • Organizer
      ASME 2013 Pressure Vessels & Piping Division Conference
    • Related Report
      2013 Final Research Report
  • [Presentation] BEHAVIOR OF BOLT FORCE CHANGES OF FLANGED CONNECTIONS UNDER THERMAL LOADING2013

    • Author(s)
      Masaaki HIRATSUKA, Takashi KOBAYASHI, Kengou NISHIURA, Katsutoyo ITOI
    • Organizer
      2013 ASME Pressure Vessels & Piping Division Conference
    • Place of Presentation
      Paris Marriott Rive Gauche Hotel & Conference Center
    • Related Report
      2012 Research-status Report
  • [Presentation] DEFLECTION OF GASKETS AND ITS EFFECT ON TIGHTNESS OF FLANGED CONNECTIONS IN LONG TERM2013

    • Author(s)
      Takashi KOBAYASHI, Kengou NISHIURA, Masaaki HIRATSUKA, Katsutoyo ITOI
    • Organizer
      2013 ASME Pressure Vessels & Piping Division Conference
    • Place of Presentation
      Paris Marriott Rive Gauche Hotel & Conference Center
    • Related Report
      2012 Research-status Report
  • [Presentation] 昇温時のPTFE系ガスケットの変形特性の測定と評価2011

    • Author(s)
      小林隆志,羽切大生,内山和明,西浦謙剛,平塚雅章
    • Organizer
      日本機械学会山梨講演会
    • Related Report
      2013 Final Research Report
  • [Presentation] 昇温時のPTFE系ガスケットの変形特性の測定と評価2011

    • Author(s)
      小林隆志,羽切大生,内山和明,西浦謙剛,平塚雅章
    • Organizer
      日本機械学会 山梨講演会
    • Place of Presentation
      山梨大学工学部(甲府市)
    • Related Report
      2011 Research-status Report
  • [Presentation] DEFLECTION OF GASKETS AND ITS EFFECT ON TIGHTNESS OF FLANGED CONNECTIONS IN LONG TERM

    • Author(s)
      Takashi KOBAYASHI, Kengou NISHIURA, Masaaki HIRATSUKA, Katsutoyo ITOI
    • Organizer
      ASME 2013 Pressure Vessels & Piping Division Conference
    • Place of Presentation
      Paris Marriott Rive Gauche Hotel & Conference Center(Paris,France)
    • Related Report
      2013 Annual Research Report
  • [Presentation] BEHAVIOR OF BOLT FORCE CHANGES OF FLANGED CONNECTIONS UNDER THERMAL LOADING

    • Author(s)
      Masaaki HIRATSUKA, Takashi KOBAYASHI, Kengou NISHIURA, Katsutoyo ITOI
    • Organizer
      ASME 2013 Pressure Vessels & Piping Division Conference
    • Place of Presentation
      Paris Marriott Rive Gauche Hotel & Conference Center(Paris,France)
    • Related Report
      2013 Annual Research Report
  • [Presentation] ナノインデンテーション法によるガスケットの長期・高温粘弾性特性評価

    • Author(s)
      橋本純平,長谷川就,小林隆志,辻裕一
    • Organizer
      日本機械学会,山梨講演会
    • Place of Presentation
      山梨大学工学部(甲府市)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 高温におけるフランジ締結体のガスケット変形量の測定

    • Author(s)
      小林隆志,佐藤広嗣,鈴木洋輔,辻裕一
    • Organizer
      日本機械学会,山梨講演会
    • Place of Presentation
      山梨大学工学部(甲府市)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 温度変動下でのフランジ締結体のボルト軸力変化

    • Author(s)
      小林隆志,石田裕哉,糸井克豊,平塚雅章,西浦謙剛,森本吏一
    • Organizer
      日本機械学会,山梨講演会
    • Place of Presentation
      山梨大学工学部(甲府市)
    • Related Report
      2013 Annual Research Report
  • [Presentation] ナノインデンテーション法による非石綿シートガスケットの高温・長期粘弾性特性の評価

    • Author(s)
      辻 裕一,宮沢裕也,山口篤志,小林隆志
    • Organizer
      日本高圧力技術協会,平成24年度秋季講演会・概要集
    • Place of Presentation
      北九州市立男女共同参画センター ムーブ
    • Related Report
      2012 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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