Takayoshi KUBONO


Effects of Shapes of Contact Surfaces on Break Arcs Occurring between Electrical Contacts in Which a Magnet is Embedded
Naoya TAKESHITA Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9  pp. 1522-1526
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: 
electrical contactsrelaycontact erosionpermanent magnethigh-speed camera
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Position and Shape of Break Arcs Driven by Transverse Magnetic Field
Tomoaki SASAKI Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9  pp. 1527-1530
Type of Manuscript:  BRIEF PAPER
Category: 
Keyword: 
break arcmagnetexternal magnetic field48 Velectrical contact
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Arc Duration of Break Arcs Magnetically Blown-Out in a DC 450 V Resistive Circuit
Hitoshi ONO Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9  pp. 1515-1521
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: 
arc dischargepermanent magnetelectrical contacttransverse magnetic fieldhigh-speed camera
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Break Arcs Driven by Transverse Magnetic Field in a DC48 V/6-24 A Resistive Circuit
Toru SUGIURA Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/09/01
Vol. E94-C  No. 9  pp. 1381-1387
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: 
break arcsexternal magnetic fieldseparating speedarc duration
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Arc Duration and Rotational Frequency of Break Arcs Driven by Radial Magnet Field in a DC42 V Resistive Circuit
Naoya TAKESHITA Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/09/01
Vol. E94-C  No. 9  pp. 1388-1394
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: 
electrical contactsrelaycontact erosionpermanent magnethigh-speed camera
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Effect of Contact Materials of Ag/SnO2 and Ag/ZnO on Rotational Motion of Break Arcs Driven by Radial Magnetic Field
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/09/01
Vol. E93-C  No. 9  pp. 1387-1392
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (Selected Papers from IS-EMD2009))
Category: 
Keyword: 
break arcpermanent magnetarc dischargeelectrical contacts
 Summary | Full Text:PDF

Characteristics of Break Arcs Driven by Transverse Magnetic Field in a DC High-Voltage Resistive Circuit
Tomohiro ATSUMI Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/09/01
Vol. E93-C  No. 9  pp. 1393-1398
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (Selected Papers from IS-EMD2009))
Category: 
Keyword: 
break arcelectrical contactmagnethigh-speed camera
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Rotational Motion of Break Arcs Driven by Radial Magnetic Field in a DC Resistive Circuit
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/08/01
Vol. E92-C  No. 8  pp. 992-997
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (IS-EMD2008))
Category: Arc Discharge & Contact Phenomena
Keyword: 
break arcmagnetic drivehigh-speed cameraelectrical contacts
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Motion of Break Arcs Driven by External Magnetic Field in a DC42 V Resistive Circuit
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1255-1260
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargebreak archigh-speed cameramagnetelectrical contact
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Relationship between Arc Duration and Motion of Arc Spots for Break Arcs of Ag and Ag/ZnO Electrical Contacts
Junya SEKIKAWA Takumi SUGIO Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1249-1254
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreak archigh-speed cameraAg/ZnO
 Summary | Full Text:PDF

Time-Resolved Spectroscopic Temperature Measurement of Break Arcs in a D.C.42 V Resistive Circuit
Junya SEKIKAWA Naoki MORIYAMA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1268-1272
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
Keyword: 
break arcarc temperaturespectroscopic measurementspectral intensity
 Summary | Full Text:PDF

Dependence of Motion of Breaking Arc on Contact Separating Speed for Ag and Pd Contact Pairs in a DC42V Resistive Circuit
Yoshinobu NAKAMURA Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/07/01
Vol. E90-C  No. 7  pp. 1361-1368
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from ICEC2006))
Category: Arc Discharge & Related Phenomena
Keyword: 
electrical contactarc spotbreaking arcseparating speedhigh-speed video camera
 Summary | Full Text:PDF

Spectroscopic Temperature Measurement of Breaking Arcs Near Cathode and Anode Surfaces of Copper Contacts
Naoki MORIYAMA Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/08/01
Vol. E89-C  No. 8  pp. 1141-1146
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from IS-EMD2005))
Category: Arc Discharge & Related Phenomena
Keyword: 
breaking arcarc temperaturespectral intensityBoltzmann plot
 Summary | Full Text:PDF

Optical Observation of Arc Discharges between Electrical Contacts Breaking at Low Speed in DC42 V Resistive Circuit
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/08/01
Vol. E89-C  No. 8  pp. 1147-1152
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from IS-EMD2005))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed cameracurrent density
 Summary | Full Text:PDF

Growth of Transferred Pip and Electrical Properties of AgCdO Make-Only Contacts in Resistive Circuit with DC 14 V and 42 V Power Supply
Tomoya ITO Ryo YAMAZAKI Yutaka NAITO Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1670-1674
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Automotive Application
Keyword: 
electrical contactstransferred piparc discharge
 Summary | Full Text:PDF

A Proposal on a New Algorithm for Volume Calculation Based on Laser Microscope Data
Makoto HASEGAWA Masato AKITA Kazutaka IZUMI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1573-1576
Type of Manuscript:  Special Section LETTER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Contact Phenomena
Keyword: 
laser microscopecontact surface damageerosionmaterial transfervolume measurement
 Summary | Full Text:PDF

An Experimental Equation for Dependence of Duration of Breaking Arcs on Supply Voltage with Constant Circuit Resistance
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1584-1589
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Arc Discharge & Related Phenomena
Keyword: 
electrical contactarc dischargebreaking arcarc durationexperimental equation
 Summary | Full Text:PDF

Cathode and Anode Bright-Spot Behaviors of Breaking Arc between Electrical Contacts with Low Separating Speed
Takayoshi ENDO Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1596-1602
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargebright spotelectrical contactbreaking archigh-speed camera
 Summary | Full Text:PDF

Observations of the Eroded Surfaces and the Motion of Arc Spots at Each Breaking Operation of Silver Electrical Contacts
Junya SEKIKAWA Tetsuya KITAJIMA Takayoshi ENDO Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1590-1595
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed cameramicroscope
 Summary | Full Text:PDF

Observation of Pips Formed on Ag/SnO2 Contacts in DC14 V-21 A Resistive Circuit
Yutaka NAITO Tomoya ITO Ryo YAMAZAKI Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1664-1669
Type of Manuscript:  Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Automotive Application
Keyword: 
Ag/SnO212 wt%electrical contactstransferred pippip shapesticking
 Summary | Full Text:PDF

Observation of Breaking Arcs of Ag or Cu Electrical Contact Pairs with a High-Speed Camera
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/08/01
Vol. E87-C  No. 8  pp. 1342-1347
Type of Manuscript:  Special Section PAPER (Special Section on IS-EMD2003--Recent Technical Trend of Electro-Mechanical Devices)
Category: Arc Discharge
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed camera
 Summary | Full Text:PDF

Research on Cathode Root Properties in Carbon Vacuum Arc
Daisuke SAKAI Yoshiharu SAITO Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/08/01
Vol. E87-C  No. 8  pp. 1356-1360
Type of Manuscript:  Special Section PAPER (Special Section on IS-EMD2003--Recent Technical Trend of Electro-Mechanical Devices)
Category: Arc Discharge
Keyword: 
vacuum arc dischargecathode arc rootgraphite electrodeevaporation rate
 Summary | Full Text:PDF

Temperature Measurements of Breaking Arc between Copper Contacts at Three Constant Speeds (10, 20 and 30 mm/s)
Tetsuya KITAJIMA Junya SEKIKAWA Mitsuru TAKEUCHI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/08/01
Vol. E87-C  No. 8  pp. 1361-1366
Type of Manuscript:  Special Section PAPER (Special Section on IS-EMD2003--Recent Technical Trend of Electro-Mechanical Devices)
Category: Arc Discharge
Keyword: 
breaking arcspectrum intensityarc temperatureopening speedarc durationgap length
 Summary | Full Text:PDF

An Experimental Equation of V-I Characteristics of Breaking Arc for Ag, Au, Cu and Ni Electrical Contacts
Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/06/01
Vol. E86-C  No. 6  pp. 926-931
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Development of Electro-Mechanical Devices (IS-EMD 2002))
Category: Discharges & Related Phenomena
Keyword: 
arc dischargeV-I characteristicsexperimental equationbreaking arc
 Summary | Full Text:PDF

Relationship between Growth of Transferred Pip and Arc Duration at Electrical Contacts Mounted on Relays
Takatsugu NAKAYAMA Junya SEKIKAWA Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/06/01
Vol. E86-C  No. 6  pp. 939-944
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Development of Electro-Mechanical Devices (IS-EMD 2002))
Category: Discharges & Related Phenomena
Keyword: 
electrical contactstransferred pipbouncesarc dischargerelays
 Summary | Full Text:PDF

Spectroscopic Determination of Temperature and Metal-Vapor for Copper Breaking Arc by Using a CCD Color Camera and an Additional Filter
Mitsuru TAKEUCHI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/09/25
Vol. E83-C  No. 9  pp. 1377-1384
Type of Manuscript:  Special Section PAPER (Special Issue on Current Electromechanical Devices and Their Materials with Recent Innovations)
Category: 
Keyword: 
arc dischargecopperspectroscopytemperaturemetal-vapor
 Summary | Full Text:PDF

Influence of the Shape of Silver Contacts on the Spatial Distribution of Spectral Intensity of a Breaking Arc
Mitsuru TAKEUCHI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/01/25
Vol. E82-C  No. 1  pp. 41-48
Type of Manuscript:  Special Section PAPER (Special Issue on Electromechanical Devices and Their Materials)
Category: 
Keyword: 
silver contactsbreaking arcshape of contact surfacespectroscopyarc temperaturemetal vapor quantity
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An Observation of the Breaking Arc between Silver Contacts Using a High Speed Color Video
Mitsuru TAKEUCHI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/01/25
Vol. E82-C  No. 1  pp. 33-40
Type of Manuscript:  Special Section PAPER (Special Issue on Electromechanical Devices and Their Materials)
Category: 
Keyword: 
silverelectric contactbreaking arcspectrumcathode brightening spothigh speed color video
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Temperature and Metal-Vapor Near Contacts in Pd Breaking Arcs by Spectroscopic Measurement
Mitsuru TAKEUCHI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/07/25
Vol. E81-C  No. 7  pp. 1143-1150
Type of Manuscript:  PAPER
Category: Materials
Keyword: 
Pd contactbreaking arcspectroscopyarc temperaturemetal-vapor
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FOREWORD
Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/03/25
Vol. E81-C  No. 3  pp. 325-325
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF

Influence of the Shape of Contact Surface on the Spatial Distribution of Spectral Intensity of Breaking Arcs in Palladium Contacts
Mitsuru TAKEUCHI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/03/25
Vol. E81-C  No. 3  pp. 384-391
Type of Manuscript:  Special Section PAPER (Special Issue on Electromechanical Devices and their Surface Science)
Category: 
Keyword: 
Pd contactsbreaking arcshape of contact surfacespectroscopy
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Experiment on the Radiated Magnetic Field Caused by a Breaking Arc
Mitsuru TAKEUCHI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/04/25
Vol. E79-B  No. 4  pp. 503-508
Type of Manuscript:  Special Section PAPER (Special Issue on Discharge and Electromagnetic Interference)
Category: 
Keyword: 
electric contactbreaking arcradiated magnetic fieldAg arcPd arc
 Summary | Full Text:PDF

A System of Measuring the Spatial Distribution of Spectroscopic Intensity in a Cross Section of Arc Column
Mitsuru TAKEUCHI Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1994/10/25
Vol. E77-C  No. 10  pp. 1634-1639
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Electromechanical Devices)
Category: Arcing Discharge and Contact Characteristics
Keyword: 
switching arcspectroscopyspatial distributionCCD color linear image sensor
 Summary | Full Text:PDF