Research Career 【 display / non-display 】

Research Career 【 display / non-display 】

• Mechanism of Fracture due to Atom Migration in Small Structures

  Project Year： 1998.4 - 2000.9

• 機構－構造連成信頼性評価シミュレーターの開発

  Project Year：

• Reliability of Micro Joints in Electronics Packaging

  Grant-in-Aid for Scientific Research  

  Project Year：

• Evaluation of Interfacial Strength between Thin Films

  Grant-in-Aid for Scientific Research  

  Project Year：

Books 【 display / non-display 】

Books 【 display / non-display 】

• Mitigating Tin Whisker Risks: Chapter 9 Mechanically induced tin whiskers

  Tadahiro Shibutani, Michael Osterman（ Role： Contributor ,  Chapter 9 Mechanically induced tin whiskers）

  Wiley 

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  Language：English Book type：Scholarly book

  This chapter discusses the pressure-induced whisker at separable interfaces as a key reliability issue of lead-free separable contacts and connectors. It shows theories of mechanically induced tin whiskers. Then, several case studies with pure tin and lead-free finishes were performed to evaluate pressure-induced tin whiskers. For electronics components, several factors affect the stress field of the finish: (i) thickness of the plating, (ii) structure of the ambient component material, and (iii) material microstructures. As a methodology for the assessment of pressure-induced tin whisker formation, the creep-based tin whisker formation model shows good results. Several connectors with tin or tin-rich alloy finishes were assessed by means of the nanoindentation technique. For the flexible printed circuit (FPC), mechanical properties of adhesives are key factors influencing tin whisker formation. Each mechanical property can be obtained by the indentation technique, and stress distribution can be estimated by finite element analysis (FEA).
  

• 高圧ガス事故の統計と解析

  小林英男，赤塚広隆，上田洋平，澁谷忠弘，笠井尚哉，佐野尊，高橋智，山田敏弘（ Role： Joint author）

  高圧ガス保安協会 

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  Language：Japanese Book type：General book, introductory book for general audience

• High reliability lead-free plating and tin whisker mitigation

  JIEP Tin Whisker Research Comittee（ Role： Joint editor）

  THE NIKKAN KOGYO SHIMBUN,LTD.  （ ISBN:978-4-526-071 ）

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  Language：Japanese Book type：Scholarly book

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• IoT-Based Prognostics and Systems Health Management for Industrial Applications

  Daeil Kwon, Melinda R. Hodkiewicz, Jiajie Fan, Tadahiro Shibutani, Michael G. Pecht

  IEEE Access   4   3659 - 3670   2016.7  [Reviewed]

  DOI Web of Science

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  Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE   Joint Work  

  Prognostics and systems health management is an enabling discipline that uses sensors to assess the health of systems,diagnoses anomalous behavior,and predicts the remaining useful performance over the life of the asset. The advent of the Internet of Things enables PHM to be applied to all types of assets across all sectors, thereby creating a paradigm shift that is opening up significant new business opportunities. This paper introduces the concepts of PHM and discusses the opportunities provided by the IoT. Developments are illustrated with examples of innovations from manufacturing,consumer products, and infrastructure. From this review,a number of challenges that result from the rapid adoption of IoT-based PHM are identified. These include appropriate analytics,security,IoT platforms, sensor energy harvesting,IoT business models, and licensing approaches.

  Other Link： http://ieeexplore.ieee.org/xpl/abstractAuthors.jsp?arnumber=7520653&filter%3DAND%28p_IS_Number%3A7419931%29

• Anomaly Detection of Servomotors Subject to Highly Accelerated Limit Testing

  Shibutani Tadahiro, Tsuboi Shota, Pecht Michael G.

  INTERNATIONAL JOURNAL OF PROGNOSTICS AND HEALTH MANAGEMENT   13 ( 2 )   1 - 12   2022.8

  DOI Web of Science

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  Language：Japanese   Publishing type：Research paper (scientific journal)   Joint Work  

• Condition-Based Monitoring for Marine Engine Maintenance by Analyzing Drain Cylinder Oil Sample

  Famakinwa Ayo, Shibutani Tadahiro

  Tribology Online   17 ( 2 )   71 - 77   2022.4

  DOI Web of Science CiNii Research

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  Language：English   Publishing type：Research paper (scientific journal)   Publisher：一般社団法人 日本トライボロジー学会   Joint Work  

  <p>Improvement of condition-based monitoring for large bore 2-stroke marine engine cylinder liners and piston rings require close monitoring of anomaly wear elements in drain cylinder oil. This paper presents monitoring of seagoing ship engines because the environment of sailing affects the internal combustion conditions leading to mechanical failure of the cylinder liners. We presented condition-based monitoring of cylinder liners using X-ray to analyze drain cylinder oil samples. The approach for condition-based monitoring uses X-ray results to estimate wear amount and machine learning algorithm on elements in the drain cylinder oil samples. The wear amount is quantified for the purpose to estimate the degradation of cylinder liner materials through the drain cylinder oil samples, machine learning algorithm to evaluate the correlation of detected elements in drain oil samples. Finally, wear rate estimation to know the remaining useful life of the cylinder liner. Our results contributed to the improvement of condition-based monitoring of cylinder liners wear elements by quantification and machine learning to correlate elements in oil samples. Correlating wear elements facilitate quick decision-making on maintenance policies for slow-speed large bore 2-stroke engines.</p>

• Public acceptance for the implementation of hydrogen self-refueling stations

  Hienuki Shunichi, Hirayama Makoto, Hirayama Yoshie, Kamada Honami, Kasai Naoya, Shibutani Tadahiro, … Show more authors

  INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   46 ( 72 )   35739 - 35749   2021.10  [Reviewed]

  DOI Web of Science

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  Language：Japanese   Publishing type：Research paper (scientific journal)   Joint Work  

• Construction of Best Fit Fatigue Curve and Mean Stress Correction Method for Aluminum Alloy 6061-T6

  SHIGA Yuta, KOBAYASHI Hideo, YAMADA Toshihiro, SANO Takeru, SHIBUTANI Tadahiro

  Journal of High Pressure Institute of Japan   59 ( 3 )   106 - 116   2021.7  [Reviewed]

  DOI

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  Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：HIGH PRESSURE INSTITUTE OF JAPN(HPI)   Joint Work  

  Aluminum alloys of 6061-T6 have been applied as a liner for Type III composite cylinders. Load-controlled fatigue tests were performed on sever-al kinds of 6061-T6. The fatigue strength shows dependency on the ten-sile strength and there is no clear fatigue limit in the high fatigue life range of 10⁷-10⁸ cycles. Based on these results, the best fit fatigue curve (BFC) of 6061-T6 was constructed for the fatigue analysis. An equation of the BFC includes tensile strength as a parameter. The superiority of the constructed BFC was verified by comparing it with that of the ASME code and the DOD handbook. The mean stress correction methods for the BFC of 6061-T6 were also discussed. A selected equation of the method is applicable to the both cases of tensile and compressive mean stresses. The superiority of the selected equation was verified by comparing it with that of the DOD handbook.

  Other Link： https://ci.nii.ac.jp/naid/130008060324

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Review Papers 【 display / non-display 】

Review Papers 【 display / non-display 】

• ISO/TC96 SC8 ジブクレーン議長就任にあたって

  澁谷忠弘

  クレーン   60 ( 3 )   1 - 1   2022.3

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  Authorship：Lead author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (other)   Publisher：日本クレーン協会   Single Work  

• Reliability of Power Modules

  Shibutani Tadahiro

  25 ( 1 )   141 - 144   2022.1  [Reviewed]  [Invited]

  DOI

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  Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Single Work  

• 先端科学技術の社会総合リスクアセスメントガイドライン

  澁谷忠弘,稗貫峻一,野口和彦,中山穣,笠井尚哉,三宅淳巳

  高圧ガス   58 ( 616 )   18 - 26   2021.7  [Reviewed]  [Invited]

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  Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (other)   Publisher：高圧ガス保安協会   Joint Work  

• Guideline for highly accelerated limit test as qualitative accelerated test procedure

  Tadahiro SHIBUTANI

  58   4 - 6   2021.1

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  Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (other)   Single Work  

• A fusion prognostics-based qualification test methodology for microelectronic products

  Michael Pecht, Tadahiro Shibutani, Myeongsu Kang, Melinda Hodkiewicz, Edward Cripps

  Microelectronics Reliability   63   320 - 324   2016.7  [Reviewed]  [Invited]

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  Language：English   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Publisher：Elsevier   Joint Work  

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Awards 【 display / non-display 】

Awards 【 display / non-display 】

• Best Paper Award in Microelectronics Symposium 2006

  2006.9    

• JSME Funai Award

  2006.3    

• JSME Young Engineers Award

  2005.4    

Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• 六自由度ランダム振動と熱衝撃を受けるマイクロ接合構造の強度信頼性

  2019.4 - 2022.3

  科学研究費補助金  Grant-in-Aid for Scientific Research(C)

  Investigator(s)：澁谷忠弘

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  Grant type：Competitive

  本研究は、六自由度ランダム振動と温度環境槽を組み合わせた複合試験により、マイクロ接合構造の強度評価技術の高度化を目指す。限界に近い環境下で精密な機能が要求されるマイクロ接合構造は、高度な信頼性予測技術が求められる。耐熱樹脂－金属のマイクロ接合構造を対象に、まず、樹脂の粘弾性特性、硬化収縮、界面結合の不均一性を考慮した精密な接合強度信頼性評価モデルを構築する。続いて、六軸ランダム振動と熱負荷を同時に受ける複合試験を実施することで、界面の振動と熱により破壊する機構を解明し、実環境に近い六軸振動環境と熱変動環境でのマイクロ接合構造の信頼性評価技術の確立を目指す。

Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Social risk approach supporting for implementation of advanced technological systems

  Tadahiro Shibutani  [Invited]

  2022.11  Korean Society of Safety

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  Event date： 2022.11

  Language：English   Presentation type：Oral presentation (invited, special)  

  Country：Korea, Republic of  

• パワーモジュール用耐熱封止樹脂の界面強度評価

  澁谷忠弘  [Invited]

  2022年度第2回先端電子デバイス接着技術研究会  2022.9  大阪大学 F3D実装協働研究所

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  Event date： 2022.9

  Language：English   Presentation type：Oral presentation (invited, special)  

  Venue：オンライン  

Charge of on-campus class subject 【 display / non-display 】

Charge of on-campus class subject 【 display / non-display 】

• 2022   Exercise on Safety Management of Mechanical Systems

  Graduate School of Environment and Information Sciences

• 2022   Safety Management of Mechanical Systems

  Graduate School of Environment and Information Sciences

• 2022   Seminar IV in risk evaluation and control for mechanical systems

  Graduate School of Environment and Information Sciences

• 2022   Seminar III in risk evaluation and control for mechanical systems

  Graduate School of Environment and Information Sciences

• 2022   Seminar II in risk evaluation and control for mechanical systems

  Graduate School of Environment and Information Sciences

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Committee Memberships 【 display / non-display 】

Committee Memberships 【 display / non-display 】

• 産業構造審議会ガス安全小委員会

  2020.12 - 2022.12  臨時委員

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  Committee type：Government 

  2018年7月～2020年7月

• ISO/TC262 (Risk management)

  2019.4  Expert

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  Committee type：Government 

• 高圧ガス保安に係る法定講習の実施方法の在り方検討委員会

  2021.11 - 2022.3  委員長

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  Committee type：Academic society 

• LPガス保安規制に関する調査検討委員会

  2021.11 - 2022.3  委員長

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  Committee type：Academic society 

• ISO TC96/SC8 Jib crane

  2021.8  Chair

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  Committee type：Government 

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Social Contribution(Extension lecture) 【 display / non-display 】

Social Contribution(Extension lecture) 【 display / non-display 】

• 第11回シンポジウム・特定非営利活動法人リスク共生社会推進センター設立記念「 リスク共生社会を実現する オープン社会創造拠点」

  Role(s)： Panelist,　Host,　Logistic support

  横浜国立大学  オンライン  2021.3

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  Audience： Graduate students,　Researchers,　General public,　Scientific organization,　Company,　Civic organization,　Government agency,　Media

  Type：Seminar, workshop

• 乙種機械検定講習

  Role(s)： Lecturer

  神奈川高圧ガス保安協会  かわさき保育会館  2021.2

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  Audience： General public,　Company

  Type：Certification seminar

  7章（材料の力学と強度），8章（高圧装置用材料），9章（材料の劣化）について講義を担当．

• TC262 Strategic Workshop

  Role(s)： Logistic support

  ISO TC262 risk management  Zoom  2020.11

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  Audience： Scientific organization,　Company

  Type：Seminar, workshop

• 茨城県高圧ガス保安推進セミナー

  Role(s)： Lecturer

  茨城県  茨城県高圧ガス保安推進セミナー  茨城県神栖市大野原 4-7-11  2020.2

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  Audience： Researchers,　Company,　Government agency

  Type：Seminar, workshop

• 乙種機械検定講習

  Role(s)： Lecturer

  神奈川高圧ガス保安協会  かわさき保育会館  2019.5

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  Audience： General public,　Company

  Type：Certification seminar

  7章（材料の力学と強度），8章（高圧装置用材料），9章（材料の劣化）について講義を担当．

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Academic Activities 【 display / non-display 】

Academic Activities 【 display / non-display 】

• IEA TCP H2 Safety Task

  Role(s)： Planning, management, etc.

  IEA TCP  2021.12

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  Type：Academic research