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Evaluation Method of Thermal Shock for Porous Ceramics

Research Project

Project/Area Number 16560073
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionEhime University

Principal Investigator

TSUTSUMI Mitsuyoshi  Ehime University, Graduate School of Science and Engineering, Lecture, 理工学研究科, 講師 (70293925)

Co-Investigator(Kenkyū-buntansha) OKABE Naeatoshi  Ehime University, Graduate School of Science and Engineering, Professor, 理工学研究科, 教授 (20281181)
TAKAHASHI Manabu  Ehime University, Graduate School of Science and Engineering, Associate Professor, 理工学研究科, 助教授 (20274334)
ZHU Xia  Ehime University, Graduate School of Science and Engineering, Lecture, 理工学研究科, 講師 (90325358)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2006: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsThermal shock / Thermal fatigue / FEM / Ceramics / Porous Ceramics / 接触強度 / 寸法効果
Research Abstract

In this study, the thermal shock test system equipped with high temperature heating gas generator of two stage burners was developed, and thermal shock tests for porous ceramics were carried out by using developed test machine. Damages of tested materials were investigated by measuring their bending fracture strengths, and the result showed that developed testing method worked effectively. FEM analysis on thermal shock revealed that generated thermal stress under thermal shock caused initiation of crack and its propagation length was controlled by degree of thermal stress.
On the other hand, fracture tests under room temperature for porous ceramics ware carried out to research base strength properties, and analysis modeling of the materials was investigated by using formula and FEM. Results of model analysis are summarized as followings; (1) Models show scale dependency that nominal fracture stress of model with small cross section area is smaller than that with large cross section area. This result agrees with experimental one. (2) By introducing pore elements, models could simulate dispersion of strength and rigidity, and these are strongly affected by distribution of pore elements. These results imply the existence of large defects by linkage of pores in actual porous ceramics.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (6 results)

All 2006 2005

All Book (6 results)

  • [Book] 平成17年度「環境浄化フィルタ等に使用される多孔材料の試験方法の開発」成果報告書(1.2.2節担当)2006

    • Author(s)
      岡部永年 ほか
    • Publisher
      日本ファインセラミックス協会
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] 2006 annual report "Development of test method for porous ceramics for environment purifier filter (in Japanese)"2006

    • Author(s)
      Nagatoshi Okabe et al.
    • Publisher
      Japan Fine Ceramics Association
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] 平成17年度「石油代替電源用新素材の試験・評価方法の標準化に関する調査研究」成果報告書2006

    • Author(s)
      岡部永年 ほか
    • Publisher
      日本ファインセラミックス協会(印刷中)
    • Related Report
      2005 Annual Research Report
  • [Book] 平成16年度「環境浄化フィルタ等に使用される多孔材料の試験方法の開発」成果報告書(4.2.2節担当)2005

    • Author(s)
      岡部永年 ほか
    • Total Pages
      274
    • Publisher
      日本ファインセラミックス協会
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] 2005 annual report "Development of test method for porous ceramics for environment purifier filter (in Japanese)"2005

    • Author(s)
      Nagatoshi Okabe et al.
    • Publisher
      Japan Fine Ceramics Association
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Book] 平成16年度「石油代替電源用新素材の試験・評価方法の標準化に関する調査研究」成果報告書2005

    • Author(s)
      岡部永年 ほか
    • Publisher
      日本ファインセラミックス協会(未定)
    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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