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1992 Fiscal Year Final Research Report Summary

Development of Diagnostic Expert System for Environmentally Assisted Cracking and of Its Standard Development Methods

Research Project

Project/Area Number 03302028
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field 機械材料工学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KOMAI Kenjiro  Kyoto Univ., Dept. Mech. Engg., Professor, 工学部, 教授 (70025948)

Co-Investigator(Kenkyū-buntansha) OKAZAKI Shozo  Kawasaki Heavy Industries Co. Ltd., Akashi Research Laboratory, Manager, 明石技術研究所, 主査
OOKUBO Katsuo  Sumitomo Chemical Co. Ltd., Engg. Research Laboratory, Head, エンジニアリング研究所, 所長
MURAKAMI Riichi  Tokushima Univ. Dept. Mech. Engg., Professor, 工業短期大学部, 教授 (00112235)
FUKUDA Shuuichi  Tokyo Metropolitan Institute of Technology, Dept. Mech. Engg., Professor, 工学部, 教授 (90107095)
MINOSHIMA Kohji  Kyoto Univ., Dept. Mech. Engg., Associate Professor, 工学部, 助教授 (50174107)
Project Period (FY) 1991 – 1992
KeywordsExpert system / Artificial intelligence / Environmentally-assisted cracking / Stress corrosion cracking / Hydrogen embrittlement / Hydrogen attack / Case histories / Fractography
Research Abstract

The expert system, that diagnoses the sensitivity of environmentally assisted cracking (EXENAC; EXpert system for ENvironmentally Assisted Cracking), has been developed using the OPS83 programming language. This system is composed of three independent subsystems, which respectively diagnose the sensitivity of i) stress corrosion cracking of austenitic stainless steels, ii) hydrogen embrittlement of high-strength steels, and iii) hydrogen attack of steels. The knowledge base is consisted of production rules, which have certainty factors, enabling the uncertain but widely applicable knowledge to be built in a knowledge base, which in turn raised the flexibility of diagnosis subjects which the expert system faces with. Applying the developed expert system to round robin tests of the case histories, the diagnoses were accurately made. We discussed the the characteristics of the individual knowledge base, related diagnosis results and the suitable knowledge base structures for diagnoses in the area of environmentally assisted cracking and the improvement methods to increase the Accuracy of the diagnoses.

  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 駒井 謙治郎: "材料工学研究に対する知識工学手法の応用" 材料力学講演会論文集. A. 431-436 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 駒井 謙治郎: "高強度鋼の環境破壊フラクトグラフィ診断エキスパートシステムの開発" 材料力学講演会論文集. A. 458-460 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 駒井 謙治郎: "環境破壊フラクトグラフィ診断エキスパートシステムの開発" 日本機械学会関西支部第67期定時総会講演会講演論文集No.924-1. 163-165 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 駒井 謙治郎: "環境助長割れ診断エキスパートシステムの開発と診断知識の重要度評価" 日本機械学会論文集,A編. 57. 189-194 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kenjiro Komai: "Development of Diagnostic Expert System for Environmentally Assisted Cracking (EXENAC) and Importance Evaluation of Rules in Inference" Computerization and Netwarking of Materials Database,ASTM STP 1140. 255-270 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 福田 収一: "フラクタルを利用した対象の識別" 第2回設計工学・システム部門講演会. 65-68 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 福田 収一: "フラクタルを利用した対象識別の試み" 第42回応用力学連合講演会. 499-502 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shuuichi Fukuda: "Image and Information processing Technique and Materials Strength Investigation" Proc.36th Japan Congress on Materials Research,. (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 村上 理一: "超音波探傷試験による溶接欠陥評価のためのエキスパートシステムの構築の試み" 日本機械学会松山地方講演会,No925-2. 129-131 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 村上 理一: "超音深探傷試験による溶接欠陥評価のためのエキスパートシステムの構築の試み" 日本機械学会論文集,A編. 59. 1-8 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Komai: "Application of Knowledge Engineering to Materials Science" Proc. JSME/MD. Vol.A. 431-436 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Komai, K. Minoshima and N. Yamasaki: "Development of Expert System for Fractography of Environmentally Induced Cracking of High-Strength Steels." Proc. JSME/MD. Vol.A. 458-460 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Komai, K. Minoshima and M. Koyama: "Development of Diagnostic Expert System for Environmentally Induced Cracking and Importance Evaluation of Knowledge" Trans. JSME, Series A. Vol.57. 188-194 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Komai, K. Minoshima and M. Koyama: "Development of Diagnostic Expert System for Environmentally Assisted Cracking (EXENAC) and Importance Evaluation of Rules in Inference" Computerization and Networking of Materials Database, ASTM STP 1140. 255-270 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Komai, K. Minoshima and N. Yamasaki: "Development of Expert System for Fractography of Environmentally Assisted Cracking" Proc. JSME. No.924-1. 163-165 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R. Murakami, Y. Shimada and S. Ueda: "Development of Expert System for Estimation of Weld Flaw by Ultrasonic Testing" Proc. JSME. No.925-1. 129-131 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R. Murakami, Y. Shimada and S. Ueda: "Development of Expert System for Estimation of Weld Flaw by Ultrasonic Testing" Trans. JSME, Series A. Vol.59. 1-8 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Fukuda, B. Asztalos and K. Suzuki: "Discrimination of Objects Using Fractal" Proc. Second Symposium on Design Engineering. 65-68 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Fukuda, B. Asztalos and K. Suzuki: "Discrimination of Objects Using Fractal" Proc. 42nd Symposium on Applied Mechanics. 499-502 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Fukuda: "Image alnd Information Processing Technique and Materials Strength Investigation" Proc. 36th Jpn Congress on Materials Research. (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1994-03-24  

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