The development of the effective ultrasonic simulation technique based on the superposition technique of points sound source for defect sizing

斜角探傷試験における欠陥同定のための音源重ね合せ超音波伝播シミュレーションについて

In recent years, the extremely thick plate becomes used in the deck plate of large ships. To prevent the brittle fracture it is important to detect and measure the inner defects. If the defect sizing can be accurately measured during the in-service period, the estimation of the residual life becomes possible. Ultrasonic Testing is used in order to inspect the inner defects in a thick plate, and it is necessary to select adequately the probe frequency, size, refraction angle, or another condition to evaluate the defect size accurately. The estimation of the defect size in vertical direction to plate surface is important from the viewpoint of fatigue strength. But the vertical defect size and also the inclined defect size are hardly to be estimated accurately. In this study, the simulation program based on the superposition technique of points sound source was developed to estimate the inner defects in the deck plate precisely by the authors. Moreover, the effectivity was clarified by simulation using finite element method (FEM) and experimentation using the test specimens including artificial defects.

• Record URL:
  https://doi.org/10.2534/jjasnaoe.15.135
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=The+development+of+the+effective+ultrasonic+simulation+technique+based+on+the+superposition+technique+of+points+sound+source+for+defect+sizing&author=H.+Hirasawa&author=S.+Daiki&author=M.+Masahiro&author=Y.+Takao&publication_year=2012
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/18803717
• Authors:
  • Hirasawa, Hideyuki
  • Daiki, Shibata
  • Masahiro, Maeda
  • Takao, Yoshikawa
• Publication Date: 2012

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: pp 135-143
• Serial:
  • Journal of the Japan Society of Naval Architects and Ocean Engineers
  • Volume: 15
  • Issue Number: 0
  • Publisher: Japan Society of Naval Architects and Ocean Engineers
  • ISSN: 1880-3717
  • EISSN: 1881-1760
  • Serial URL: https://www.jstage.jst.go.jp/browse/jjasnaoe/-char/en
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Decks (Ships); Defects; Finite element method; Fracture mechanics; Sheets and plates; Ships; Simulation; Ultrasonic tests
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 01505594
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Jan 27 2014 11:27AM