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1988 Fiscal Year Final Research Report Summary

Stadardization of Image Processing Techniques for Fractography

Research Project

Project/Area Number 62302024
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  Faculty of Engng., Kyoto University, Professor, 工学部, 教授 (70025948)

Co-Investigator(Kenkyū-buntansha) 江原 隆一郎  三菱重工業, 広島研究所, 主務
FURUKIMI Osamu  Iron & Steel Res. Lab., Kawasaki Steel Corp., Senior Researcher, 技術研究本部, 主任研究員 (60432853)
TAKANO Tachio  Faculty of Engng., University of Tokyo, Instructor, 工学部, 助手 (10010852)
MORI Kaname  Faculty of Engng., Nagoya University, Assistant Professor, 工学部, 講師 (70023207)
MINOSHIMA Kohji  Faculty of Engng., Kyoto University, Instructor, 工学部, 助手 (50174107)
EBARA Ryuichiro  Hiroshima R & D Center, Mitsubishi Heavy Industries, Ltd., Senior Researcher
Project Period (FY) 1987 – 1988
KeywordsFractography / Image processing / Standardization / Corrosion pit / Dimple / Facet / Striation / ストレッチゾーン
Research Abstract

Standardization of image processing techniques for fractorgraphy has been promoted and various algorithms and softwares to process and to estimate the fracture surfaces have been developed. The results obtained are as follows.
1. In addition to 3 dimensional estimation of shapes and dimensions of corrosion pits, emaluation of dimples and striation spacings as a round robin trial, calculations of facet sizes, inter- and transgranular fracture area fractions, and stretch zone sizes have been successfully conducted with an enough accuracy.
2. As for a pre-processing prior to the image analysis, normalizing and flattering of gray levels so as to standardize the photographing condition and to intensify the contrast and/or a median filtering to reduce noises are necessary. In addition, detection of edges and lines as well as some pre-processings to shorten cpu time must be considered.
3. To re-construct the 3 dimensional topographies from a stereo photographs the search of identical positions is the most important, and the merits and demerits of the mutual correlation algorithm, the SSDA, and the logic operator one have been made clear.
4. As for the evaluation of dimples, area of triangular element method to calculate the net area of fracture surfaces and 3 neighboring pixels one have been devised.
5. The threshold method of cross section and the fracture surface vector one to calculate facet sizes, the detection of edges and lines method and the FFT one to calculate striation spacings, the binatization method of co-occurrence matrix and the mapping one of the matrix to calculate inter- and transgranular fracture area fractions, the monotonously increasing section method and the tangent line one to calculate stretch zone sizes have been newly devised. The merits and demerits of those algorithms and the application guide have been systematically made clear.

  • Research Products

    (39 results)

All Other

All Publications (39 results)

  • [Publications] Kenjiro Komai: Trans.Iron and Steel Inst.Japan. 27. 658-663 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 駒井謙治郎: 機械学会論文集A. 53. 1961-1965 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 駒井謙治郎: 材料. 36. 1104-1109 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 箕島弘二: 機械学会論文集A. 54. 670-678 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 箕島弘二: 機械学会論文集A. 54. 1559-1565 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 住吉英志: 材料試験技術. 32. 10-16 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 酒井信介: 機械学会論文集A投稿中. (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江原隆一郎: 材料. 36. 513-519 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松村昌信: 日本金属学会誌. 51. 419-424 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 浦島親行: 日本機械学会論文集A. 53. 1492-1499 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江原隆一郎: 日本金属学会誌. 52. 508-516 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 田口義明: 西部造船会会報. No.75. 190-199 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 高野太刀雄: 機械学会講演論文集. 884-1. 129-130 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 住吉英志: 機械学会講演論文集. 884-1. 134-135 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 高野太刀雄: 機械学会講演論文集. 880-2. 19-20 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sinsuke Sakai: Pros.4th Int.Sym.on Experimental Mechanics. I. 422-427 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 酒井信介: 機械学会論文集A. 54. 2061-2068 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Wi-Gon Park: Pros.4th KAIF/KNS Annual Conference.Int.Syn on Pressure Vessel Technoly and Nuclear Codes & Standard (8 pages),. (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大内博史: 鉄と鋼. 75. 121-127 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kenjiro Komai: "Low Cycle Fatigue and Elasto-Plastic Behavior of Materials" Elsevier Appl.Sci., 342-347 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kohji Minoshima: "Localized Corrosion" Elsevier Appl.Sci., 123-147 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kenjiro Komai.: "Three-Dimensional Image Analysis of Corrosion Fatigue Fracture Surfaces" Trans. Iron and Steel Inst. Japan. 27. 658-663 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kenjiro Komai.: "Re-construction Technique of Three-Dimensional Shape by SEM Images" Trans. Japan. Soc. Mech. Engrs.53. 1961-1965 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kohji Minoshima.: "The Effects of Stress Cycle Frequency and Stress Wave Form on SCC Crack Growth in High-Strength Steel and Automatic Classification of Mixed Mode of Intergranular Transgranular Cracking" Trans. Japan. Soc. Mech. Engrs.54. 670-678 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kohji Minoshima.: "Quantitative Analysis of Facet Sizes of Cleavage Failures in Sharpy Impact Test Using a computer Image Processing Technique" Trans. Japan. Soc. Mech. Engrs.54. 1559-1565 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideshi Sumiyoshi.: "An Automatic Appraise of Sharpy Britle Fracture Appearance by Microcomputer Image Processing" J. Mater. Testing Res. Assoc. Jpn.32. 10-16 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tachio Takano.: "Three dimensional Image Processing by SEM Picture for Micro-mechanisms and Microscopic Structure in Structural Steel" Prepr JSME. No. 884-1. 129-130 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideshi Sumiyoshi.: "Image Processing Methods of Macro Fracture Surface for Materials Testing" Prepr JSME. No. 884-1. 134-135 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tachio Takano.: "Fatigue Surface Crack Growth Chracteristics High-Strength Steel and Stainless Steel in Corrosion Environments" Prepr JSME. No. 880-2. 19-20 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinsuke Sakai.: "Development of Interactive Image Processing System for Analyzing Three Dimensional Structure of SEM Picture" Pros. 4th Int. Symp. on Experimental Mechanics. I. 422-427 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinsuke Sakai.: "Three-Dimensional Analysis of Microfracture Surface Using a Scanning Electron Microscope (1st Report, A Proposal of an Algorithm for Three-Dimensional Analysis Suitable for a Small Scale Computer)" Trans. JSME, (A). 54. 2061-2068 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Wi-Gon Park.: "A Theoretical Consideration on Plastic Instability of Multi-Layered Cylindrical Pressure Vessel" Pros. 4th KAIF/KNS Annual conference. Int. Symp. on Pressur e Vessel Technology and Nuclear Codes & Standards. (1989-4)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinsuke Sakai.: "Improvement of Measuring Accuracy of Ultrasonic Attenuation f Degraded Materials Using Spectrum Analysis" (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Chikayuki Urashima.: "Comparison Between Rotating Bending and Push-Pull Fatigue Strength in Low Cycle Region" Proc. of the 2nd Intern. Cont. on Low Cycle Fatigue and Elasto-Plastic Behavior of Materials. 538-542 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ryuichiro Ebara.: "Ultrasonic corrosion Fatigue Testing of 13Cr Stainless Steel and Ti-6Al-4V alloys" Ultrasonic Technology 1987, Proc. of the Toyohashi Intern. Cont. on Ultrasonic Technology. 329-342 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ryuichiro Ebara.: "Application of Ion-Plated Cr-TiN Multilayer Coating to Steam Turbine Blades" Proc. of the 16th Turbomachinery Symposium. 3-8 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroshi Ouchi.: "Effects of Temperature and Dissolved Oxygen in Sea Water on the Fatigue Strength at Welded STeel Joints" Proc. of the Intern. Cont. on "Environment-Assisted Fatigue". (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kenjiro Komai.: Low Cycle Fatigue and Elsto-Plastic Behavior of Materials. Elsevier Appl. Sci., 342-347 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kohji Minoshima.: Localized Corrosion. Elsevier Appl. Sci., 123-147 (1988)

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

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Published: 1990-03-20   Modified: 2017-04-05  

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