Visual Detection of Fatigue Crack Growth Using Viscous Fluids with High Thixotropy

• TAKAHASHI Ichihiko

  National Maritime Research Institute

• TANAKA Yoshihisa

  National Maritime Research Institute

Bibliographic Information

Other Title

• 高チクソ性粘性流体を用いた疲労き裂進展の目視検出
• コウチクソセイ ネンセイ リュウタイ オ モチイタ ヒロウ キレツ シンテン ノ モクシ ケンシュツ

Abstract

Viscous fluids with high thixotropy were applied to the surface of a notched steel plate specimen, and the effects of the fluids on visual detection of fatigue crack growth were examined by performing fatigue crack growth tests. Two kinds of silicone grease with different viscosities and a mixture of silicone grease and silicone oil were used as the viscous fluids. When the fluids with relatively low viscosity were applied, obvious "caves" in them were formed along the fatigue crack paths. The lengths of these fluid caves were also well correlated with the actual crack lengths. These observations facilitated the visual crack detection. The apparent viscosity of the fluids was also measured in order to estimate their thixotropy.

Journal

• Journal of The Japanese Society for Non-Destructive Inspection

  Journal of The Japanese Society for Non-Destructive Inspection 64 (6), 290-297, 2015

  The Japanese Society for Non-Destructive Inspection

Keywords

• Fatigue crack
• Crack growth
• Visual detection
• Viscous fluid
• Thixotropy

Details

• CRID: 1390001206493628288
• NII Article ID: 130005071929
• NII Book ID: AN00208370
• DOI: 10.11396/jjsndi.64.290
• NDL BIB ID: 026504337
• ISSN: 03675866
• Web Site: http://id.ndl.go.jp/bib/026504337
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026504337
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed