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Active and Passive Electric Potential CT (Computer Tomography) Methods for Identification of Defect in Inhomogeneous and Anisotropic Materials

Research Project

Project/Area Number 10555030
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field Materials/Mechanics of materials
Research InstitutionOsaka University

Principal Investigator

KUBO Shiro  Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (20107139)

Co-Investigator(Kenkyū-buntansha) IOKA Seiji  Osaka University, Graduate School of Engineering, Research Associate, 大学院・工学研究科, 助手 (50283726)
SAKAGAMI Takahide  Osaka University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (50192589)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥11,500,000 (Direct Cost: ¥11,500,000)
Fiscal Year 2000: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1999: ¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 1998: ¥6,000,000 (Direct Cost: ¥6,000,000)
Keywordsinverse Problem / Electric Potential Method / Nondestructive Evaluation / Bonded Dissimilar Materials / Delamination / Smart Material / Crack Identification / Fracture Mechanics / 電気ポテンシャル法 / き裂 / CT法 / 境界要素法 / 電場解析
Research Abstract

The present study deals with the extension of the electric potential CT method proposed by the present investigators for the identification of a crack in a homogeneous isotropic body. The major results obtained are summarized as follows.
1. The method was made applicable to the identification of a crack in a non-homogeneous body and in an anisotropic body. by considering inhomogeneity and anisotropy in the electric potential calculations using the boundary element method. The method was applied to the identification of an interface crack in bonded dissimilar materials Numerical simulations and experiments showed that the extended method was useful for the identification of the interface crack.
2. The method was also applied to the identification of delamination in anisotropic material. The anisotropy was taken into account in the boundary element calculations of the electric potential distribution. The method was applied to the identification of delamination in carbon fiber reinforced layered composite materials. Numerical simulations showed the applicability of the method.
3. The electric potential CT method proposed so far is classified into an active method since the method uses the electric potential distribution under an application of electric current. A passive electric potential CT method, which did not require current application, was proposed by adhering piezoelectric film on the surface of the cracked body and measuring the electric potential on the surface. The effect of location and size on the electric potential distribution were examined. It was found from numerical simulations and experiments that the crack location and size can be estimated from the electric potential distribution on the piezoelectric film.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (41 results)

All Other

All Publications (41 results)

  • [Publications] Shiro KUBO: "An Experimental Study on the Applicability of the Electric Potential CT Method Identification of an Interface Crack in Bonded Dissimilar Materialas"Inverse Problems in Engineering Mechanics. 91-100 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 久保司郎: "逆問題としての非破壊評価"日本材料学会関西支部講習会「最近の非破壊検査の評価法に関する講習会(実習付)」資料. 93-122 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO: "A Numerical and Experimental Study on Identification of Interface Surface Cracks in Bonded Dissimilar Materials by the Electric Potential CT Method"Experimental Mechanics,Advances in Design,Testing & Analysis,. Vol.2. 933-938 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] LI Shanqing: "Theoretical and Numerical Investigation on Crack Identification Using Piezoelectric Material-Embedded Structure"第42回日本学術会議材料研究連合講演会講演前刷集. 27-28 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 久保司郎: "逆問題の不適切性に関する考察"第22回NCP研究会・機械の強度と形態研究懇話会NCPシンポジウム論文集. 73-74 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Irina N.TRENDAFILOVA: "Hierarchical Crack Identification from Electric Potential Measurements Using Pattern Recognition Approach and Optimization Technique"Inverse Problems in Engineering. Vol.7,No.1. 43-63 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 久保司郎: "逆問題の構造と数値解の安定性の関連"日本機械学会ウィングを広げよう材料力学シンポジウム講演論文集. No.99-4. 57-60 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 田中則彰: "電気ポテンシャルCT法を用いた異方性積層板中の内部はく離同定"日本計算工学会 第4回講演会論文集. Vol.4,No.2. 951-954 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 田中則彰: "積層材の界面はく離の同定に対する異方性3次元電気ポテンシャルCT法の適用"日本機械学会第12回計算力学講演会講演論文集. No.99-5. 453-454 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] LI Shanqing: "Theoretical and Numerical Investigations on Crack Identification Using Piezoelectreic Material-Embedded Structures"Material Sci.Research Int. Vol.6,No.1. 41-48 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 奥野康輔: "ピエゾ材料を用いた受動型電気ポテンシャルCT法"日本機械学会関西支部第75期定時総会講演会講演論文集. 発表予定. (11-23)-(11-24) (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO: "Identification of Delamination in Bonded Dissmilar Materials with Orthotropic Electric Conductivity by the Electric Potential CT Method"Inverse Problems in Engineering Mechanics II. 257-266 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 塩澤大輝: "ピエゾ材料を用いた受動型電気ポテンシャルCT法」"日本機械学会平成12年度材料力学部門講演会講演論文集. No.00-19. 315-316 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 口西学: "電気ポテンシャルCT法を用いた異方性積層複合材料の界面はく離の同定"日本機械学会第13回計算力学講演会講演論文集. No.00-17. 407-408 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO, Takahide SAKAGAMI, Hiroyuki KITAOKA, and Kiyotsugu OHJI: "An Experimental Study on the Applicability of the Electric Potential CT Method to Identification of an Interface Crack in Bonded Dissimilar Materialas"Inverse Problems in Engineering Mechanics. 91-100 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO: "Nondestructive Evaluation as Inverse Problems"Lecture Notes on Nondestructive Evaluation, Soc. Materials Sci., Japan. 93-122 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO, Takahide SAKAGAMI, Jirasak SARASINPITAK, Hiroyuki KITAOKA, and Kiyotsugu OHJI: "A Numerical and Experimental Study on Identification of Interface Surface Cracks in Bonded Dissimilar Materials by the Electric Potential CT Method"Advances in Design, Testing & Analysis, Vol. 2, Balkema. 933-938 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] LI Shanqing, Shiro KUBO, Takahide SAKAGAMI, and LIU Zhengzing: "Theoretical and Numerical Investigation on Crack Identification Using Piezoelectric Material-Embedded Structure"Preprint of the 42^<nd> Japan National Congress on Materials Research. 27-28 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO: "On Ill-Posedness of Inverse Problems"Proc. of the 22^<nd> NCP Symp.. 73-74 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Irina N.TRENDAFILOVA, Shiro KUBO, and Takahide SAKAGAMI: "Hierarchical Crack Identification from Electric Potential Measurements Using Pattern Recognition Approach and Optimization Technique"Inverse Problems in Engineering. Vol.7, No.1. 43-63 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO: "Relationship Between Structure of Inverse Problems and Stability of Their Solutions"Preprint of Japan Soc.Mech.Engrs.. No.99-4. 57-60 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Noriaki TANAKA, Shiro KUBO, and Takahide SAKAGAMI: "Identification of Delamination in Bonded Dissimilar Materials with Orthotropic Electric Conductance by the Electric Potential CT Method"Proc. of Conf. on Computational Eng. and Sci.. Vol.4, No.2. 951-954 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Noriaki TANAKA, Shiro KUBO, and Takahide SAKAGAMI: "Application of Anisotropic Three-Dimensional Electric Potential CT Method to Identification of Delamination in Bonded Dissimilar Materials"Preprint of Japan Soc.Mech.Engrs.. No.99-5. 453-454 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] LI.Shanqing, Shiro KUBO, Takahide SAKAGAMI, and LIU Zhengxing: "Theoretical and Numerical Investigations on Crack Identification Using Piezoelectreic Material-Embedded Structures"Material Sci. Research Int.. Vol.6, No.1. 41-48 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kosuke OKUNO, Shiro KUBO, Takahide SAKAGAMI, and Daiki SHIOZAWA: "Passive Electric Potential CT Method Using Piezoelectreic Material"Preprint of Japan Soc.Mech.Engrs.. No.004-1. 11-23-11-24 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO, Takahide SAKAGAMI, and Noriaki TANAKA: "Identification of Delamination in Bonded Dissimilar Materials with Orthotropic Electric Conductivity by the Electric Potential CT Method"Inverse Problems in Engineering Mechanics II, Elsevier. 257-266 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Daiki SHIOZAWA, Shiro KUBO, Takahide SAKAGAMI, and Kosuke OKUNO: "Passive Electric Potential CT Method Using Piezoelectreic Material"Preprint of Japan Soc.Mech.Engrs.. No.00-19. 315-316 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Manabu KUCHINISHI, Shiro KUBO, Takahide SAKAGAMI, and Seiji IOKA: "Identification of Delamination in Layered Composite Materials by the Electric Potential CT Method"Preprint of Japan Soc.Mech.Engrs.. No.00-17. 407-408 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shiro KUBO: "Identification of Delamination in Bonded Dissimilar Materials with Orthotropic Electric Conductivity by the Electric Potential CT Method"Inverse Problems in Engineering Mechanics II. 257-266 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 塩澤大輝: "ピエゾ材料を用いた受動型電気ポテンシャルCT法」"日本機械学会平成12年度材料力学部門講演会講演論文集. No.00-19. 315-316 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 口西学: "電気ポテンシャルCT法を用いた異方性積層複合材料の界面はく離の同定"日本機械学会第13回計算力学講演会講演論文集. No.00-17. 407-408 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] LI Shanqing: "Theoretical and Numerical Investigations on Crack Identification Using Piezoelectreic Material-Embedded Structures"Material Sci. Research Int. Vol.6, No. 1(掲載予定). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 田中 則彰: "積層材の界面はく離の同定に対する異方性3次元電気ポテンシャルCT法の適用"日本機械学会第12回計算力学講演会講演論文集. No.99-5. 453-454 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 奥野 康輔: "ピエゾ材料を用いた受動型電気ポテンシャルCT法"日本機械学会関西支部第75期定時総会講演会講演論文集. (発表予定). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 田中 則彰: "電気ポテンシャルCT法を用いた異方性積層板中の内部はく離同定"日本計算工学会 第4回講演会論文集. Vol. 4, No.2,. 951-954 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Shiro KUBO: "A Numerical and Experimental Study on Identification of Interface Surface Cracks in Bonded Dissimilar Materials by the Electric Potential CT Method" Experimental Mechanics,Advances in Design,Testing & Analysis. Vol.2. 933-938 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Shiro KUBO: "Applicability of the Electric Potential CT Method to Identification of an Interface Internal Cracks in Bonded Dissimilar Materials" Inverse Problems in Engineering Mechanics. 91-100 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Shanqing LI: "Theoretical and Numerical Investigation on Crack Identification Using Piezoelectric Material-Embedded Structure" 第42回日本学術会議材料研究連合講演会講演前刷集. 27-28 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 久保 司郎: "逆問題の不適切性に関する考察" 第22回NCPシンポジウム論文集. 73-74 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 久保 司郎: "逆問題の構造と数値解の安定性の関連" 日本機械学会ウィングを広げよう材料力学シンポジウム講演論文集. No.99-4(掲載予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Irina N.TRENDAFILOVA: "Hierarchical Crack Identification from Electric-Potential Measurements Using Pattern Recognition Approach and Optimization Technique" Inverse Problems in Engineering. (掲載予定). (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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