The experiment was conducted on the compact normal and shear (CNS) specimens made of homogeneous and dissimilar materials subjected to mixed-mode loading. Many Young’s fringes patterns around the crack tip were taken and analyzed by the image-processing system developed in my laboratory. The displacement obtained by speckle photography is not as smooth as that obtained by the finite element analysis (FEA). Therefore, the displacement data were smoothed by 2 D FFT filtering and least squares method. The intelligent hybrid method proposed by Nishioka et al. was applied to the stress-strain analysis. Consequently, the stress and strain near the crack tip can be evaluated with high accuracy by the present stress-analyzing system. Then, the stress-intensity factor was evaluated by the virtual crack extension method (VCEM) and displacement extrapolation. The accuracy of stress-intensity factor at the free surface was discussed from both viewpoint of experiment and 3 D FEA.
Skip Nav Destination
ASME 2002 Pressure Vessels and Piping Conference
August 5–9, 2002
Vancouver, BC, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-1949-3
PROCEEDINGS PAPER
Evaluation of Stress-Intensity Factor of Mixed-Mode Crack by Hybrid Speckle Photography
Kenji Machida
Kenji Machida
Science University of Tokyo, Noda-shi, Chiba, Japan
Search for other works by this author on:
Kenji Machida
Science University of Tokyo, Noda-shi, Chiba, Japan
Paper No:
PVP2002-1212, pp. 221-228; 8 pages
Published Online:
August 14, 2008
Citation
Machida, K. "Evaluation of Stress-Intensity Factor of Mixed-Mode Crack by Hybrid Speckle Photography." Proceedings of the ASME 2002 Pressure Vessels and Piping Conference. New and Emerging Computational Methods: Applications to Fracture, Damage, and Reliability. Vancouver, BC, Canada. August 5–9, 2002. pp. 221-228. ASME. https://doi.org/10.1115/PVP2002-1212
Download citation file:
7
Views
Related Proceedings Papers
Related Articles
Analysis of a High-Speed Flexible Four-Bar Linkage: Part II—Analytical and Experimental Results on the Apollo
J. Vib., Acoust., Stress, and Reliab (January,1989)
Mechanical Properties of Crimped Mineral Wools: Identification From Digital Image Correlation
J. Eng. Mater. Technol (April,2008)
On the Generation of Tuned Test Problems for Stress Concentrations Induced by Shear Tractions
J. Verif. Valid. Uncert (December,2024)
Related Chapters
Flexibility Analysis
Process Piping: The Complete Guide to ASME B31.3, Third Edition
Analysis of Radially Cracked Ring Segments Subject to Forces and Couples
Developments in Fracture Mechanics Test Methods Standardization
Data Tabulations
Structural Shear Joints: Analyses, Properties and Design for Repeat Loading