Development of Genetic Algorithms based System for High-Precision Reconstructions of Three-Dimensional Topographies using Stereo Fractographs

基于遗传算法的立体断口高精度三维地形重建系统的开发

基本信息

  • 批准号:
    10555029
  • 负责人:
  • 金额:
    $ 8.45万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    1998
  • 资助国家:
    日本
  • 起止时间:
    1998 至 1999
  • 项目状态:
    已结题

项目摘要

A software is developed which enables reconstruction of the three-dimensional (3-D) shape of fracture surfaces without human assistance. It is based upon computer image processing and pattern recognition techniques by using a stereo-pair of scanning electron micrographs. The processing consists of two subprocesses : searching the matching points between two images and computation of heights using the relative shift of the matching points. By using the previously developed system, some mismatches were inevitable in the search process, in particular, for low-contrast SEM images such as striations, intergranular facets, and so on. In order to improve the accuracy of the search, a Genetic Algorithm (GA) was implemented into the developed system. By using the GA method, the 3-D shapes of a wide variety of fracture surfaces including cleavage failures, intergranular cracking, dimples and fatigue striations, were successfully reconstructed with sufficient accuracy. The searching processes by the GA method and the previously developed two-step algorithm of coarse and close searching were compared. These proved that the GA method has the advantage of accuracy in the searching process and of short-run-time. A detailed 3-D shape, or more than a 120×120 reconstructed point-sized shape, was thus obtained with sufficient accuracy and with a relatively short-run-time. The developed system was also applied to the fatigued fracture surfaces of a stainless steel (SUS316NG) and a low-alloy steel (SGV420), and the relationship between quantitative topographic measures and stress intensity factors and/or crack growth rates was discussed.
开发了一种软件,该软件能够在没有人工辅助的情况下重建断裂表面的三维(3-D)形状。它是基于计算机图像处理和模式识别技术,通过使用立体对扫描电子显微照片。该处理由两个子过程组成:搜索两幅图像之间的匹配点和使用匹配点的相对位移计算高度。在使用以前开发的系统,一些不匹配是不可避免的,在搜索过程中,特别是对于低对比度的扫描电镜图像,如条纹,晶间刻面,等等,为了提高搜索的准确性,遗传算法(GA)被实施到开发的系统。通过使用GA方法,各种各样的断裂表面,包括解理断裂,晶间裂纹,韧窝和疲劳条纹的3-D形状,成功地重建了足够的精度。比较了遗传算法和已有的粗搜索和密搜索两步算法的搜索过程。证明了遗传算法具有搜索精度高、运行时间短的优点。因此,以足够的精度和相对较短的运行时间获得了详细的3D形状,或超过120×120的重建点尺寸形状。该系统也被应用到疲劳断裂表面的不锈钢(SUS 316 NG)和低合金钢(SGV 420),和定量的形貌测量和应力强度因子和/或裂纹扩展速率之间的关系进行了讨论。

项目成果

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
K.Minoshima, T.Suezaki and K.Komai: "Genetic Algorithms for High-Precision Reconstructions of Three-Dimensional Topographies using Stereo Fractograhs"Fatigue & Fracture of Engineering Materials and Structures. 23(in press). (2000)
K.Minoshima、T.Suezaki 和 K.Komai:“使用立体分形图高精度重建三维地形的遗传算法”疲劳
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    0
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Kohji MINOSHIMA: "Genetic Algorithms for High-Precision Reconstructions of Three-Dimensional Topographies using Streo Fractographs"Fatigue & Fracture of Engineering Meterials and Structures. 23(in press). (2000)
Kohji Minoshima:“使用 Streo 断裂图进行三维地形高精度重建的遗传算法”疲劳
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
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  • 通讯作者:
Kohji MINOSHIMA: "Genetic Algorithms for High-Precision Reconstructions of Three-Dimensional Topographies using Stereo Fractographs"Fatigue & Fracture of Engineering Materials and Structures. 23. (2000)
Kohji Minoshima:“使用立体断口图高精度重建三维地形的遗传算法”疲劳
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MINOSHIMA Kohji其他文献

MINOSHIMA Kohji的其他文献

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{{ truncateString('MINOSHIMA Kohji', 18)}}的其他基金

Development of local strain measurement technique using transmission HR-EBSD
开发使用透射 HR-EBSD 的局部应变测量技术
  • 批准号:
    16K14118
  • 财政年份:
    2016
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Essence of Size Effects on Strength of Metallic Nano-Films
尺寸对金属纳米薄膜强度影响的本质
  • 批准号:
    26220901
  • 财政年份:
    2014
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Scientific Research (S)
Evaluation of large-strain plasticity of nano-films by a hybrid digital image correlation method
混合数字图像相关法评价纳米薄膜的大应变塑性
  • 批准号:
    25630012
  • 财政年份:
    2013
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Investigation on Fracture Mechanisms and Size Effects of Nano-Films Using Nano-Mechanical Testing System based upon in-situ Observations and Analyses
基于原位观察和分析的纳米力学测试系统研究纳米薄膜的断裂机制和尺寸效应
  • 批准号:
    23246026
  • 财政年份:
    2011
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Creation of Flexible Nano-Materials
柔性纳米材料的创造
  • 批准号:
    23656088
  • 财政年份:
    2011
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Investigation into the degradation mechanism of environmental embrittlement using integrated in-situ nano mechanical testing
使用集成原位纳米机械测试研究环境脆化的降解机制
  • 批准号:
    20360054
  • 财政年份:
    2008
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of Mechanical and Fatigue Testing System for Micro Elements
微元件力学与疲劳测试系统的研制
  • 批准号:
    16360054
  • 财政年份:
    2004
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Strength Evaluation of Single Crystal Silicon Microelements and Related Micromaterials
单晶硅微元及相关微材料的强度评价
  • 批准号:
    12555025
  • 财政年份:
    2000
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Metallic Materials by means of Localized Hydrogen Distribution and Nanoscopic Damage Analyses
通过局部氢分布和纳米损伤分析的金属材料
  • 批准号:
    12650084
  • 财政年份:
    2000
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Measurements of Localized Ion Distribution and Nanoscopic AFM Observation of Crack Initiation and Propagation of Stress Corrosion Cracking
应力腐蚀裂纹萌生和扩展的局域离子分布测量和纳米级 AFM 观察
  • 批准号:
    10650086
  • 财政年份:
    1998
  • 资助金额:
    $ 8.45万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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Explanation for reduction of mechanical properties of Japanese larch timber kiln-dried by the high-temperature setting method based on fractography observation
基于断口观察的高温定形法窑干日本落叶松木材力学性能降低的解释
  • 批准号:
    22580180
  • 财政年份:
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通过疲劳断口分析进行修复设计的新型评估系统。
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    14571840
  • 财政年份:
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  • 批准号:
    10650655
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    1998
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Nano-Fractography Study of Fatigue Crack Growth under Service Loading in Ceramics
陶瓷使用载荷下疲劳裂纹扩展的纳米断口研究
  • 批准号:
    09450051
  • 财政年份:
    1997
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Development of the system for three-dimensional analysis of fracture surface and proposal of the three-dimensional fractography
断口三维分析系统的开发及三维断口成像技术的提出
  • 批准号:
    08555028
  • 财政年份:
    1996
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    $ 8.45万
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    Grant-in-Aid for Scientific Research (A)
A new approach to quantitative fractography of the cell-wall materials by means of SEM stereoanalysis
利用 SEM 立体分析定量细胞壁材料断口的新方法
  • 批准号:
    62560178
  • 财政年份:
    1987
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    $ 8.45万
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    Grant-in-Aid for General Scientific Research (C)
Stadardization of Image Processing Techniques for Fractography
断口图像处理技术的标准化
  • 批准号:
    62302024
  • 财政年份:
    1987
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Internal Structure and Its Fractography of Structural Particleboard
结构刨花板的内部结构及其断口分析
  • 批准号:
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    1987
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Establishment of X-Ray Fractography as Failure Analysis Method
X射线断口分析失效分析方法的建立
  • 批准号:
    61302035
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    1986
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Fracture mechanics and fractography of fatigue and creep fracture under service conditions.
使用条件下疲劳和蠕变断裂的断裂力学和断口分析。
  • 批准号:
    60550058
  • 财政年份:
    1985
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    Grant-in-Aid for General Scientific Research (C)
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