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Takashi Kobayashi
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Proceedings Papers

Stress Analysis of Bolted Circular Flanged Joints With Tap Bolts

Takashi Kobayashi, Tsuneshi Morohoshi, Toshiyuki Sawa
Proc. ASME. IMECE98, Reliability, Stress Analysis, and Failure Prevention Aspects of Adhesive and Bolted Joints, Rubber Components, Composite Springs, 113-123, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-1122
https://doi.org/10.1115/IMECE1998-1122
View Paper titled, Stress Analysis of Bolted Circular Flanged Joints With Tap Bolts
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Topics: Contact mechanics, Elasticity, Screw threads, Stress, Stress analysis (Engineering), Stress concentration
Proceedings Papers

The Damping Characteristics of Machine Structures Assembled by Bonding: A Beam in Which Two Steel Strips Are Partially Joined by an Adhesive

Takashi Kobayashi, Yuichi Nakano
Proc. ASME. IMECE98, Reliability, Stress Analysis, and Failure Prevention Aspects of Adhesive and Bolted Joints, Rubber Components, Composite Springs, 85-89, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-1120
https://doi.org/10.1115/IMECE1998-1120
View Paper titled, The Damping Characteristics of Machine Structures Assembled by Bonding: A Beam in Which Two Steel Strips Are Partially Joined by an Adhesive
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Topics: Adhesives, Bonding, Damping, Machinery, Steel, Strips, Finite element analysis, Temperature
Proceedings Papers

A Method for Analyzing Electromagnetic-Force-Induced Vibration and Noise From Motors

Koki Shiohata, Kanako Nemoto, Takashi Kobayashi
Proc. ASME. DETC99, Volume 7A: 17th Biennial Conference on Mechanical Vibration and Noise, 1241-1246, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8289
https://doi.org/10.1115/DETC99/VIB-8289
View Paper titled, A Method for Analyzing Electromagnetic-Force-Induced Vibration and Noise From Motors
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Topics: Motors, Noise (Sound), Resonance, Vibration
Proceedings Papers

Estimation of Tightness of Bolted Flange Connections Subjected to Combined Loads of Axial Load and Bending Moment

Takashi Kobayashi, Ryosuke Nogi
Proc. ASME. PVP2020, Volume 2: Computer Technology and Bolted Joints, V002T02A018, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21473
https://doi.org/10.1115/PVP2020-21473
View Paper titled, Estimation of Tightness of Bolted Flange Connections Subjected to Combined Loads of Axial Load and Bending Moment
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Topics: Bolted flanges, Gaskets, Leakage, Stress
Proceedings Papers

FEM Stress Analysis and Mechanical Characteristics of Bolted Pipe Flange Connections With PTFE Blended Gaskets Subjected to External Bending Moments and Internal Pressure

Koji Sato, Toshiyuki Sawa, Riichi Morimoto, Takashi Kobayashi
Proc. ASME. PVP2017, Volume 2: Computer Technology and Bolted Joints, V002T02A005, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65332
https://doi.org/10.1115/PVP2017-65332
View Paper titled, FEM Stress Analysis and Mechanical Characteristics of Bolted Pipe Flange Connections With PTFE Blended Gaskets Subjected to External Bending Moments and Internal Pressure
Open the PDF for FEM Stress Analysis and Mechanical Characteristics of Bolted Pipe Flange Connections With PTFE Blended Gaskets Subjected to External Bending Moments and Internal Pressure in another window
Topics: Finite element methods, Finite element model, Flange connections, Gaskets, Mechanical properties, Pipes, Pressure, Stress analysis (Engineering), Stress, Leakage
Journal Articles

Finite Element Method Stress Analysis and Evaluation of the Sealing Performance in Box-Shape Flange Gasketed Connections Subjected to Internal Pressure

Toshiyuki Sawa, Kentaro Tenma, Takashi Kobayashi, Ryou Kurosawa
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. October 2017, 139(5): 051202.
Paper No: PVT-11-1003
https://doi.org/10.1115/1.4037192
Published Online: August 1, 2017
View Article titled, Finite Element Method Stress Analysis and Evaluation of the Sealing Performance in Box-Shape Flange Gasketed Connections Subjected to Internal Pressure
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Topics: Finite element methods, Flange connections, Flanges, Gaskets, Leakage, Pressure, Sealing (Process), Shapes, Stress, Stress concentration
Proceedings Papers

Reduction of Fugitive Emissions From Bolted Flanged Connections by Using PTFE Blended Gasket

Takashi Kobayashi, Koji Sato, Akira Muramatsu, Toshiyuki Sawa
Proc. ASME. PVP2016, Volume 2: Computer Technology and Bolted Joints, V002T02A010, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63547
https://doi.org/10.1115/PVP2016-63547
View Paper titled, Reduction of Fugitive Emissions From Bolted Flanged Connections by Using PTFE Blended Gasket
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Topics: Emissions, Flange connections, Gaskets, Sealing (Process), Graphite, Temperature, Creep, Fillers (Materials), Heat, Leakage
Proceedings Papers

FEM Stress Analysis of Long-Term Sealing Performance for Bolted Pipe Flange Connections With PTFE Blended Gaskets Under Elevated Temperature

Koji Sato, Toshiyuki Sawa, Takashi Kobayashi
Proc. ASME. PVP2016, Volume 2: Computer Technology and Bolted Joints, V002T02A007, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63372
https://doi.org/10.1115/PVP2016-63372
View Paper titled, FEM Stress Analysis of Long-Term Sealing Performance for Bolted Pipe Flange Connections With PTFE Blended Gaskets Under Elevated Temperature
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Topics: Finite element methods, Finite element model, Flange connections, Gaskets, Pipes, Sealing (Process), Stress analysis (Engineering), Temperature, Stress, Leakage
Proceedings Papers

Effectiveness of Retightening in Maintaining Higher Residual Bolt Loads and Tightness of Bolted Flanged Connections

Takashi Kobayashi, Chihiro Zenyoji
Proc. ASME. PVP2015, Volume 2: Computer Technology and Bolted Joints, V002T02A028, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45472
https://doi.org/10.1115/PVP2015-45472
View Paper titled, Effectiveness of Retightening in Maintaining Higher Residual Bolt Loads and Tightness of Bolted Flanged Connections
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Topics: Flange connections, Stress, Gaskets, Deflection, Flanges, Creep, Elastic constants
Proceedings Papers

FEM Stress Analysis and Sealing Performance of Bolted Flanged Connections Using PTFE Blended Gaskets Under Internal Pressure

Koji Sato, Akira Muramatsu, Takashi Kobayashi, Toshiyuki Sawa
Proc. ASME. PVP2015, Volume 2: Computer Technology and Bolted Joints, V002T02A010, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45268
https://doi.org/10.1115/PVP2015-45268
View Paper titled, FEM Stress Analysis and Sealing Performance of Bolted Flanged Connections Using PTFE Blended Gaskets Under Internal Pressure
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Topics: Finite element methods, Finite element model, Flange connections, Gaskets, Pressure, Sealing (Process), Stress analysis (Engineering), Stress, Creep, Leakage
Proceedings Papers

Study on the Deflection of Gaskets and its Effects on Residual Bolt Forces and Tightness of Bolted Flanged Connections

Takashi Kobayashi
Proc. ASME. PVP2014, Volume 2: Computer Technology and Bolted Joints, V002T02A017, July 20–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: PVP2014-28514
https://doi.org/10.1115/PVP2014-28514
View Paper titled, Study on the Deflection of Gaskets and its Effects on Residual Bolt Forces and Tightness of Bolted Flanged Connections
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Topics: Deflection, Flange connections, Gaskets, Creep, Elastic constants, Flanges, Stress
Proceedings Papers

Development of Design Procedure for Gasketed Pipe Flange Connections Based on Allowable Leak Rates

Satoshi Nagata, Yasuro Oyama, Toshiyuki Sawa, Takashi Kobayashi, Ryou Kurosawa
Proc. ASME. PVP2013, Volume 2: Computer Technology and Bolted Joints, V002T02A017, July 14–18, 2013
Publisher: American Society of Mechanical Engineers
Paper No: PVP2013-97861
https://doi.org/10.1115/PVP2013-97861
View Paper titled, Development of Design Procedure for Gasketed Pipe Flange Connections Based on Allowable Leak Rates
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Topics: Design, Flange connections, Leakage, Pipes, Flanges, Gaskets, High pressure (Physics), Pressure equipment, Sealing (Process), Temperature
Proceedings Papers

FEM Calculations and Evaluation of Sealing Performance in Comparison of Raised Face and Flat Face Flange Connections

Ryou Kurosawa, Toshiyuki Sawa, Yuya Omiya, Takashi Kobayashi, Kentaro Temma
Proc. ASME. PVP2013, Volume 2: Computer Technology and Bolted Joints, V002T02A002, July 14–18, 2013
Publisher: American Society of Mechanical Engineers
Paper No: PVP2013-97106
https://doi.org/10.1115/PVP2013-97106
View Paper titled, FEM Calculations and Evaluation of Sealing Performance in Comparison of Raised Face and Flat Face Flange Connections
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Topics: Finite element methods, Flange connections, Sealing (Process), Gaskets, Flanges, Leakage, Stress, Pressure, Asbestos substitutes, Chemical industry
Proceedings Papers

Behavior of Bolt Force Changes of Flanged Connections Under Thermal Loading

Masaaki Hiratsuka, Takashi Kobayashi, Kengou Nishiura, Katsutoyo Itoi
Proc. ASME. PVP2013, Volume 2: Computer Technology and Bolted Joints, V002T02A027, July 14–18, 2013
Publisher: American Society of Mechanical Engineers
Paper No: PVP2013-97730
https://doi.org/10.1115/PVP2013-97730
View Paper titled, Behavior of Bolt Force Changes of Flanged Connections Under Thermal Loading
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Topics: Flange connections, Gaskets, Diluents, Flow (Dynamics), High temperature, Ovens, Temperature, Torque
Proceedings Papers

Deflection of Gaskets and its Effect on Tightness of Flanged Connections in Long Term

Takashi Kobayashi, Kengou Nishiura, Masaaki Hiratsuka, Katsutoyo Itoi
Proc. ASME. PVP2013, Volume 2: Computer Technology and Bolted Joints, V002T02A021, July 14–18, 2013
Publisher: American Society of Mechanical Engineers
Paper No: PVP2013-97729
https://doi.org/10.1115/PVP2013-97729
View Paper titled, Deflection of Gaskets and its Effect on Tightness of Flanged Connections in Long Term
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Topics: Deflection, Flange connections, Gaskets, Elastic constants, Flanges, Leakage, Stress
Proceedings Papers

The Residual Bolt Force and the Sealing Performance of Flanged Connections With Expanded PTFE Gaskets (Based on Test Results for One Year)

Takashi Kobayashi, Taiki Hagiri, Kengou Nishiura, Masaaki Hiratsuka, Katsutoyo Itoi
Proc. ASME. PVP2012, Volume 2: Computer Technology and Bolted Joints, 231-237, July 15–19, 2012
Publisher: American Society of Mechanical Engineers
Paper No: PVP2012-78694
https://doi.org/10.1115/PVP2012-78694
View Paper titled, The Residual Bolt Force and the Sealing Performance of Flanged Connections With Expanded PTFE Gaskets (Based on Test Results for One Year)
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Topics: Flange connections, Gaskets, Sealing (Process), Temperature, Compression, Maintenance, Stress, Thermal expansion
Proceedings Papers

FEM Stress Analysis and Strength Prediction of Stepped-Lap Adhesive Joints of Similar Hollow Cylinders Under Static Tensile Loadings

Kazunari Kotajima, Yasuhisa Sekiguchi, Takashi Kobayashi, Yuta Ueda, Toshiyuki Sawa
Proc. ASME. IMECE2011, Volume 3: Design and Manufacturing, 441-448, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-62984
https://doi.org/10.1115/IMECE2011-62984
View Paper titled, FEM Stress Analysis and Strength Prediction of Stepped-Lap Adhesive Joints of Similar Hollow Cylinders Under Static Tensile Loadings
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Topics: Adhesive joints, Cylinders, Finite element methods, Finite element model, Stress analysis (Engineering), Stress, Adhesives, Young's modulus, Stress concentration
Proceedings Papers

Two-Dimensional FEM Stress Analysis of Adhesive Butt Joints Filled With Nano-Composite in Adhesive Subjected to Static Tensile Loading

Toshiyuki Sawa, Shougo Tanabe, Takashi Kobayashi, Kazunari Kotajima, Yasuhisa Sekiguchi
Proc. ASME. IMECE2011, Volume 3: Design and Manufacturing, 449-455, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-63038
https://doi.org/10.1115/IMECE2011-63038
View Paper titled, Two-Dimensional FEM Stress Analysis of Adhesive Butt Joints Filled With Nano-Composite in Adhesive Subjected to Static Tensile Loading
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Topics: Adhesives, Finite element methods, Nanocomposites, Stress analysis (Engineering), Fillers (Materials), Stress, Stiffness, Stress concentration, Weight (Mass)
Proceedings Papers

Scatter of Bolt Preloads in Pipe Flange Connection Tightened by Impact Wrench and the Effect on Sealing Performance

Koji Kondo, Yuya Omiya, Takashi Kobayashi, Toshiyuki Sawa
Proc. ASME. IMECE2011, Volume 3: Design and Manufacturing, 481-489, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-64613
https://doi.org/10.1115/IMECE2011-64613
View Paper titled, Scatter of Bolt Preloads in Pipe Flange Connection Tightened by Impact Wrench and the Effect on Sealing Performance
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Topics: Electromagnetic scattering, Flange connections, Pipes, Sealing (Process), Gaskets, Leakage, Stress concentration, Torque wrenches, Bubbles, Finite element methods
Proceedings Papers

Effects of Strain Rate on the Stress Propagations in Bonded Shrink Fitted Joints Under Impact Push-Off Loadings

Lijuan Liao, Toshiyuki Sawa, Takashi Kobayashi, Yasuhiro Goda
Proc. ASME. IDETC-CIE2011, Volume 7: 5th International Conference on Micro- and Nanosystems; 8th International Conference on Design and Design Education; 21st Reliability, Stress Analysis, and Failure Prevention Conference, 939-944, August 28–31, 2011
Publisher: American Society of Mechanical Engineers
Paper No: DETC2011-48222
https://doi.org/10.1115/DETC2011-48222
View Paper titled, Effects of Strain Rate on the Stress Propagations in Bonded Shrink Fitted Joints Under Impact Push-Off Loadings
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Topics: Stress, Adhesives, Finite element methods, Deformation, Experimental methods, Rupture, Wave propagation, Yield stress