EVALUATION OF MICRO-CRACK DISTRIBUTION USING INVERSE HOMOGENIZATION METHOD

• KATO Junji

  東北大学 大学院工学研究科

• KASAI Ryosuke

  東北大学 大学院工学研究科

• KYOYA Takashi

  東北大学 大学院工学研究科

• TERADA Kenjiro

  東北大学 災害科学国際研究所

Bibliographic Information

Other Title

• 逆均質化法を用いたマイクロクラック分布の同定

Abstract

 Detection of micro-cracks is very important to lengthen the lifetime of structures because micro-crack is a signal of initiation and growth of deterioration of materials and eventually degrades the mechanical performance of structures. However, no practically useful non-destructive testing device for large scale structures can capture the essential micro-crack for large structures in reality. In the meanwhile, nowadays, non-destructive testing simulation is also gaining attention. The term, non-destructive testing simulation, means a numerical testing for crack inspection applying computational mechanics. The present study proposes a method to determine micro-crack topology giving an equivalent homogenized macro-stiffness tensor to the prescribed anisotropic material stiffness tensor by applying an inverse-homogenization method. We demonstrate the accuracy of the evaluation of the proposed method in terms of a series of numerical simulations.

Journal

• Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

  Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 72 (1), 27-37, 2016

  Japan Society of Civil Engineers

Keywords

• micro-crack
• topology optimization
• inverse-homogenization
• non-destructive inspection

Details

• CRID: 1390001205349089152
• NII Article ID: 130005138364
• DOI: 10.2208/jscejam.72.27
• ISSN: 21854661
• Web Site: https://www.jstage.jst.go.jp/article/jscejam/72/1/72_27/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed