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1987 Fiscal Year Final Research Report Summary

Material Evaluation of the Strenght and Degradation of Ally Steels by Magnetic Barkhausen Noise Analysis

Research Project

Project/Area Number 61850122
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 金属加工(含鋳造)
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

FURUYA Yasubumi  Research Associate,Faculty of Emmgng.,Tohoku University, 工学部, 助手 (20133051)

Co-Investigator(Kenkyū-buntansha) TAMAUCHI Kiyoshi  Tohoku Kinzoku Kogyo Co,Ltd., 金属材料事業部, 課長
MIHARA Tsuyoshi  Pesearch Associate, Fuculty of Engng. Tohoku University, 工学部, 助手 (20174112)
OBATA Mutsuo  Profrsseor, Faculty of Engng., Tohoku Niversity, 工学部, 教授 (10005548)
Project Period (FY) 1986 – 1987
KeywordsMaterials Evaluation / Non-destructive %techinigue / Magnetic Measuremwnt / Barkhausen Noise / Steels / Degradation / 残留応力 / 応力測定
Research Abstract

Advanced magnetic non-destructive measurement technique, "Barkhausen noise (BHN) analysis" method is developed for ecaluating the strength and characterizing the mictostructural properties of ferromagnetic materials Thie BHN measuring system consists of the devices for analyzing BHN and circuit for integrating magnetic induced voltage of small measuring coil located in the center of magnetizing core poles. Taking a parameter of the slope, (apparent permeability) from the loop of magnetizing current(Hs) v.s. measuring voltage(Bs), if enables to evaluate the stress level in more wider tange then BHN measurement. Next, BHN analysis is performed to detect (1) the damaging process in fatigued roller material,(2) the degradation of Cr-Mo alloy steels by digital spectrum analyzer. Distinct differences in FFT spectrum are recobnized for the viegin and used material. Moreover, residual stresses in the welded component and the property of graphite cast iron are also able to be evaluated by BHN. In consequence, the developed hybrid-type BHN measuring system can provide us simultaneously the two informations about the properties of material stength, namely, "stress state" as wsell as "microstructural quality" of ferromagnetic materials. Is seems to have the various possibility for mowe wide and multilateral matireal evaluation.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 古屋泰文,島田平八: 非破壊検査. 35-8. 532-537 (1986)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 古屋泰文,島田平八,伊藤勇一: 非破壊検査. 36-8. 530-534 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 古屋泰文,島田平八,荒砥孝二: 日本金属学会誌. 3(27-3). (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Furuya;H.Shimoda;Y.Ito: 6th International Conference on Experimertal Mechanics held by SEM (Portland,USA,1988-6).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Furuya;H.Shimada: 2nd Ibternational Conference on Residual Stresses 'ICRS-2(Paris,France).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yasubumi Furuya, Heihachi Shimada: "%evaluation of Material Sterngth by Magnetic Barkhausen Noise Analysis" Japanese Society of Non-destructive Inspection. 35-8. 532-537 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasubumi Furuya, Heihachi Shimada: "Barkhausen Noise Sensor for Materials Evaluation" Japanese Society of Non-destructive Inspection. 35-11. 532-537 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasubumi Furuya, Heihachi Shimada: "Material Evaluation of Graphite Cast Iron by Magnetic Barkhausen Noise Analysis" Japanese Society of Non-destructive Inspection. 52-3. (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasubumi Furuya, Heihachi Shimada, Yuichi Ito: "Magentic Barkhausen Noise Analysis in Biaxial Stress Test" Japanese Society of Non-destuructive Inspection. 36-8. 530-534 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasubumi Furuya, Heihachi Shimada: "Mearsurenent of Residual Stresses of Welded Steel Plate by Contact Type Sensor" 2nd International Conference on Residual Stresses ,ICRS-2 (Paris, France). (1988-11)

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

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Published: 1989-03-30  

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