Crack damage detection by ultra-high frequency A. C. potential method for coated single crystal superalloys

涂层单晶高温合金超高频交流电势法裂纹损伤检测

基本信息

  • 批准号:
    12650101
  • 负责人:
  • 金额:
    $ 2.43万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2000
  • 资助国家:
    日本
  • 起止时间:
    2000 至 2001
  • 项目状态:
    已结题

项目摘要

This research project investigated two main topics by using A. C. potential method. The both topics are related with the damage assessment of nickel base superalloy gas turbine blades with anti-corrosive and thermal barrier coatings. One was to measure the number of cracks and the crack depth formed on the turbine blade due to thermal stressing. The other was to measure the size and the depth of defects occurred at the interface of the coating and base superalloy.The gradient of the A. C. potential - frequency relationship was deferent depending on the number and the depth of cracks. This means that the number of cracks and the crack depth are determinable by utilizing the frequency dependence of A. C. potentials. The both are actually determinable by comparing the relationships of the target specimen to those in the database where the relationships of many cracked specimens are stored.The maximum value of A. C. potential was corresponded with the size of defects while the gradient of the A. C. potential-frequency relationships reflected the depth of defects. The A. C. potential method was concluded to be capable to measure the size and the depth of defects by measuring the maximum value and the gradient.Harmonic electro-magnetic finite element analyses were carried out to confirm the experimental results obtained. Absolute values obtained in the analyses were not rigorously agreed with the experimental results but the potential ratio normalized by the potential away from the defects agreed well with the experimental results. This clearly indicates that the experimental results obtained in this study had a physical background of electro-magnetic theory.
本研究采用交流电位法对两个主要课题进行了研究。这两个课题都涉及带有防腐和热障涂层的镍基高温合金燃气轮机叶片的损伤评估。一种是测量由于热应力在涡轮叶片上形成的裂纹数量和裂纹深度。另一种是测量涂层与基体高温合金界面处缺陷的大小和深度,交流电势-频率关系的梯度随裂纹的数目和深度的不同而不同。这意味着可以利用交流电势的频率依赖性来确定裂纹的数量和深度。两者实际上都是通过比较目标试件与存储有多个裂纹试件关系的数据库中的关系来确定的,交流电势的最大值对应于缺陷的大小,而交流电势-频率关系的梯度反映了缺陷的深度。通过测量缺陷的最大值和梯度,得出交流电位法能够测量缺陷的大小和深度,并对实验结果进行了简谐电磁有限元分析。分析得到的绝对值与实验结果不完全一致,但用远离缺陷的势能归一化后的电势比与实验结果符合得很好。这清楚地表明,本研究的实验结果具有电磁理论的物理背景。

项目成果

期刊论文数量(12)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Yeonkyeong Lee: "Multiple Surface Crack Detection by A. C. Potential Method"Transactions of the Japan Society of Mechanical Engineers. (accepted). (2001)
Yeonkyeong Lee:“利用交流电位法检测多表面裂纹”日本机械工程师学会会刊。
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    0
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Yeonkyeong Lee: "Inner Defects Detection by A. C. Potential Method"Proc. 50th Annual Meeting of Japan Science of Materials Science. 379-380 (2001)
Yeonkyeong Lee:“通过交流电势法检测内部缺陷”Proc。
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    0
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Noritake Hiyoshi: "Tension-Tortion Multiaxial Creep-Fatigue for CMSX-2 Nickel Base Single Crystal Superalloy"Journal of The Society of Materials Science Japan. 50-2. 137-143 (2001)
Noritake Hiyoshi:“CMSX-2 镍基单晶高温合金的拉伸扭转多轴蠕变疲劳”日本材料学会杂志。
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    0
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李 年慶: "交流電位差法による複数き裂検出法の開発"日本機械学会論文集A編. (投稿中). (2001)
Nianqing Li:“使用交流电位法的多重裂纹检测方法的开发”,日本机械工程学会会刊,A 卷(目前正在提交)(2001 年)。
  • DOI:
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  • 影响因子:
    0
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  • 通讯作者:
Yeonkyeong Lee: "Multiple Surface Crack Detection by A. C. Potential Method"Proc. the Committee on High Temperature Strength of Materials, Japan of The Society of Materials Science. 50-4. 3-12 (2002)
Yeonkyeong Lee:“通过交流电势法检测多表面裂纹”Proc。
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SAKANE Masao其他文献

Multiaxial Creep Rupture Lifetime Evaluation for Super304H Using Weld-Type Miniature Cruciform Specimen
使用焊接型微型十字形试样对 Super304H 进行多轴蠕变断裂寿命评估

SAKANE Masao的其他文献

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{{ truncateString('SAKANE Masao', 18)}}的其他基金

Creep-Fatigue Life Estimation for Nickel Base Single Crystal Superalloy under Multiaxial Loading
多轴加载下镍基单晶高温合金的蠕变疲劳寿命估算
  • 批准号:
    23560105
  • 财政年份:
    2011
  • 资助金额:
    $ 2.43万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of Multiaxial Creep-Fatigue Life Evaluation for Nickel-Base Single Crystal Superalloy Using Cruciform Specimen
利用十字形试样评价镍基单晶高温合金多轴蠕变疲劳寿命的研究进展
  • 批准号:
    20560093
  • 财政年份:
    2008
  • 资助金额:
    $ 2.43万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of Crack Damage Evaluation Method for Utilizing High Frequency A.C.Potenial Method
高频交流电位法裂纹损伤评价方法的研制
  • 批准号:
    10650105
  • 财政年份:
    1998
  • 资助金额:
    $ 2.43万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Multiaxial Creep-fatigue criterion of Ni-base single crystal superalloys.
镍基单晶高温合金的多轴蠕变疲劳准则。
  • 批准号:
    07650124
  • 财政年份:
    1995
  • 资助金额:
    $ 2.43万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Multiaxial Low Cycle Fatigue Criterion for Advanced Ni-base Directionally Solidified Superalloy
先进镍基定向凝固高温合金多轴低周疲劳准则
  • 批准号:
    05650102
  • 财政年份:
    1993
  • 资助金额:
    $ 2.43万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
High Temperature Multiaxial Creep-Fatigue and Consitutive Equation for Ni-Base Single Crystal Superalloy
镍基单晶高温合金高温多轴蠕变疲劳及本构方程
  • 批准号:
    03650067
  • 财政年份:
    1991
  • 资助金额:
    $ 2.43万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Life Prediction of Long-Term Creep-Fatigue
长期蠕变疲劳的寿命预测
  • 批准号:
    61550062
  • 财政年份:
    1986
  • 资助金额:
    $ 2.43万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

相似海外基金

Wave propagation in piezoelectric solids with multiple cracks under different electrical boundary conditions
不同电学边界条件下多裂纹压电固体中的波传播
  • 批准号:
    17075804
  • 财政年份:
    2005
  • 资助金额:
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  • 项目类别:
    Research Grants
Fatigue crack growth and coalescence of multiple cracks
疲劳裂纹扩展和多个裂纹的合并
  • 批准号:
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    2003
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    $ 2.43万
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    Discovery Grants Program - Individual
Fatigue crack growth and coalescence of multiple cracks
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    $ 2.43万
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Fatigue crack growth and coalescence of multiple cracks
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  • 批准号:
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    2001
  • 资助金额:
    $ 2.43万
  • 项目类别:
    Discovery Grants Program - Individual
Fatigue crack growth and coalescence of multiple cracks
疲劳裂纹扩展和多个裂纹的合并
  • 批准号:
    3640-2000
  • 财政年份:
    2000
  • 资助金额:
    $ 2.43万
  • 项目类别:
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Research on Interaction of Multiple Cracks and Nondestructive Evaluation by Means of Electromagnetic Techniques
多裂纹相互作用及电磁技术无损评价研究
  • 批准号:
    07805010
  • 财政年份:
    1995
  • 资助金额:
    $ 2.43万
  • 项目类别:
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Control of Geothermal Reservoirs Consisting of Multiple Cracks
多裂缝地热储层的控制
  • 批准号:
    05232103
  • 财政年份:
    1993
  • 资助金额:
    $ 2.43万
  • 项目类别:
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Experimental Fracture Mechanics For Multiple Cracks Through Half Fringe Photoelasticity
半边缘光弹性多裂纹实验断裂力学
  • 批准号:
    8300376
  • 财政年份:
    1983
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