Yasuhiro HATTORI


Fretting Characteristics of Dissimilar Metal Contacts
Tetsuya ITO Takuya YAMANAKA Yasuhiro HATTORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/09/01
Vol. E96-C  No. 9  pp. 1104-1109
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices — Papers selected from International Session on Electro-Mechanical Devices 2012 (IS-EMD2012) and other recent research results —)
Category: 
Keyword: 
frettingdissimilar metal contact
 Summary | Full Text:PDF(4.1MB)

Experimental and Calculated Cyclic Elasto-Plastic Deformations of Copper-Based Spring Materials
Yasuhiro HATTORI Kingo FURUKAWA Fusahito YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2013/09/01
Vol. E96-C  No. 9  pp. 1157-1164
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices — Papers selected from International Session on Electro-Mechanical Devices 2012 (IS-EMD2012) and other recent research results —)
Category: 
Keyword: 
spring materialstress-strain responseBauschinger effectYoshida-Uemori modelFEM
 Summary | Full Text:PDF(1.3MB)

Deformation of Crystal Morphology in Tin Plated Contact Layer Caused by Loading
Terutaka TAMAI Shigeru SAWADA Yasuhiro HATTORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9  pp. 1473-1480
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices - Papers selected from International Session on Electro-Mechanical Devices 2011 (IS-EMD2011) and other recent research results -)
Category: 
Keyword: 
tin plated contactscontact resistancecontact loadcontact traceconnectorFEM
 Summary | Full Text:PDF(2.5MB)

Observations of Structural Transition of Tin Plated Fretting Contacts Using FIB-SEM
Tetsuya ITO Shigeru OGIHARA Yasuhiro HATTORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/09/01
Vol. E94-C  No. 9  pp. 1350-1355
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices – Papers selected from International Session on Electro-Mechanical Devices (IS-EMD2010) and other research results –)
Category: 
Keyword: 
frettingFIB-SEM
 Summary | Full Text:PDF(5.9MB)

Observation of Tin Plated Fretting Contacts Using FIB-SEM
Tetsuya ITO Yoshiyuki NOMURA Yasuhiro HATTORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/09/01
Vol. E93-C  No. 9  pp. 1452-1455
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
frettingFIB-SEMtin plating thickness
 Summary | Full Text:PDF(1.3MB)

Numerical Analyses for Contact Resistance due to Constriction Effect of Current Flowing through Multi-Spot Construction
Shigeru SAWADA Terutaka TAMAI Yasuhiro HATTORI Kazuo IIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/06/01
Vol. E93-C  No. 6  pp. 905-911
Type of Manuscript:  PAPER
Category: Electromechanical Devices and Components
Keyword: 
constriction resistanceelectrical contactnumerical analysisreal contact area
 Summary | Full Text:PDF(9.4MB)

Contact Mechanisms and Contact Resistance Characteristics of Solid Tin and Plated Tin Contacts Used for Connectors
Terutaka TAMAI Shigeru SAWADA Yasuhiro HATTORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/05/01
Vol. E93-C  No. 5  pp. 670-677
Type of Manuscript:  PAPER
Category: Electromechanical Devices and Components
Keyword: 
connectortin contactstin platingcontact resistancecontact area
 Summary | Full Text:PDF(3MB)

Constriction Resistance Behavior of a Tin or Silver Plated Layer for an Electrical Contact
Shigeru SAWADA Kaori SHIMIZU Yasuhiro HATTORI Terutaka TAMAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/04/01
Vol. E93-C  No. 4  pp. 521-526
Type of Manuscript:  PAPER
Category: Electromechanical Devices and Components
Keyword: 
electrical contactcontact resistanceplatingcontact loadcontact area
 Summary | Full Text:PDF(831.4KB)

Influence of Fretting Wear on Lifetime of Tin Plated Connectors
Hirosaka IKEDA Tetsuya ITO Shigeru SAWADA Yasuhiro HATTORI Yasushi SAITOH Terutaka TAMAI Kazuo IIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/09/01
Vol. E92-C  No. 9  pp. 1215-1222
Type of Manuscript:  PAPER
Category: Electromechanical Devices and Components
Keyword: 
fretting wearlifetimetin plateelectric connector
 Summary | Full Text:PDF(2.2MB)

Contact Area Analysis by FEM with Plating Layer for Electrical Contact
Kaori SHIMIZU Shigeki SHIMADA Shigeru SAWADA Yasuhiro HATTORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/08/01
Vol. E92-C  No. 8  pp. 1013-1019
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (IS-EMD2008))
Category: Arc Discharge & Contact Phenomena
Keyword: 
electrical contactcontact resistanceplatingcontact loadFEM analysis
 Summary | Full Text:PDF(803.4KB)

Contact Resistance Characteristics of Improved Conductive Elastomer Contacts for Contaminated Printed Circuit Board in SO2 Environment
Terutaka TAMAI Yasushi SAITOH Yasuhiro HATTORI Hirosaka IKEDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1192-1198
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Contact Phenomena
Keyword: 
silicone rubberelastomeric contactscontact failurePCBcontact resistanceSO2 environment
 Summary | Full Text:PDF(926.3KB)

Micro-Structural Study of Fretting Contact Caused by the Difference of the Tin Plating Thickness
Tetsuya ITO Shigeru SAWADA Yasuhiro HATTORI Yasushi SAITOH Terutaka TAMAI Kazuo IIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1199-1205
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Contact Phenomena
Keyword: 
fretting corrosionmicrostructuretin thicknesselectric contact
 Summary | Full Text:PDF(1.8MB)

Press-Fit Connector for Automobile Electronic Control Units
Yoshiyuki NOMURA Yasushi SAITOH Kingo FURUKAWA Yoshinori MINAMI Kanji HORIUCHI Yasuhiro HATTORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/07/01
Vol. E90-C  No. 7  pp. 1472-1478
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from ICEC2006))
Category: Connectors & Sliding Contacts
Keyword: 
lead-freepress-fit connectionautomobile electronic control unitsconnection reliabilityhard tin plating
 Summary | Full Text:PDF(580.5KB)

Factors Influencing the Fretting Corrosion of Tin Plated Contacts
Tetsuya ITO Masato MATSUSHIMA Kensaku TAKATA Yasuhiro HATTORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/07/01
Vol. E90-C  No. 7  pp. 1412-1416
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from ICEC2006))
Category: Contact Phenomena
Keyword: 
frettingcontrol factorsplating thickness
 Summary | Full Text:PDF(1.1MB)