Paper Title:
Effect of Residual Stress Field in Front of the Slant Precrack Tip on Bent Fatigue Crack Propagation
  Abstract

Fatigue crack bending and propagation behaviors were studied under mixed-mode conditions using annealed and fatigue slant precracks. The bent fatigue crack initiated from the fatigue slant precrack propagated under mixed-mode conditions with mode II stress intensity factor evaluated from the crack sliding displacement measured along the crack. On the other hand, bent fatigue cracks propagated under the mode I condition for an annealed slant precrack specimen. The forces which suppress the crack opening/sliding were calculated along the slant precrack and the bent crack by FEM (Finite Element Method) analysis. As a result, the crack opening suppress forces were generated by the compressive residual stress around the fatigue slant precrack, while the forces which promote the crack sliding were caused by the residual stress field in front of the fatigue slant precrack.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
1207-1210
DOI
10.4028/www.scientific.net/KEM.353-358.1207
Citation
K. Shimizu, T. Torii, J. Nyuya, Y. Ma, "Effect of Residual Stress Field in Front of the Slant Precrack Tip on Bent Fatigue Crack Propagation ", Key Engineering Materials, Vols. 353-358, pp. 1207-1210, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Joong Hwan Jun, Bong Koo Park, Jeong Min Kim, Ki Tae Kim, Woon Jae Jung
Abstract:Microstructures and damping properties of semi-solid AM50 (Mg-5%Al-0.3%Mn) alloy were investigated and compared with those of die-cast AM50...
292
Authors: Byeong Choon Goo
Abstract:A structural steel should satisfy various properties under varied conditions. Fatigue strength is one of them. When structural steels are...
593
Authors: Wen Jun He, Guang Hui Min, Oleg V. Tolochko
Abstract:Crystal structures and shape memory properties of Ti-rich Ti52Ni23Cu25 (at.%) ribbon annealed at 450°C for 10 min and 1 h were investigated...
2259
Authors: Kozo Shinoda, S. Sato, Shigeru Suzuki, Hidenori Toyokawa, Hajime Tanida, M. Takagaki, Yasuko Terada, Tomoya Uruga
Abstract:Alloying elements added to steel for improving surface properties such as corrosion resistance are often enriched to the surface of the...
864
Authors: Yan Wu, Yan Lu, Xiang Zhao, Liang Zuo
Abstract:The effect of magnetic field on diffusion behavior of carbon in pure iron was investigated. The results showed that the magnetic field can...
67