Export file:


  • RIS(for EndNote,Reference Manager,ProCite)
  • BibTex
  • Text


  • Citation Only
  • Citation and Abstract

The influence of a non-aligned semi-elliptical surface crack on a quarter-circle corner crack in an infinitely large plate under uniaxial tension

1 Pearlstone Center for Aeronautical Engineering Studies, Department of Mechanical Engineering, Ben Gurion University of the Negev, Beer Sheva 84105 ISRAEL
2 Edward F. Cross School of Engineering, Walla Walla University, College Place, WA 99324, USA
3 Department of Mechanical and Materials Engineering, Florida International University, Miami, FL 33199 USA

Special Issues: Interaction of Multiple Cracks in Metallic Components-Volume 2

Fitness-for-Service codes require the evaluation of non-aligned multiple cracks in various practical applications. For on-site inspection, decision needs to be made on whether the cracks should be treated as coalesced or separate multiple cracks in case of non-aligned parallel cracks,. In the existing literature, criteria and standards for the adjustment of multiple nonaligned cracks are very source dependent, and those criteria and standards are often derived from on-site service experience without rigorous and systematic verification. Based on this observation, the authors previously reported on the effect between an edge and an embedded parallel crack in 2-D scenarios and, more recently, in 3-D scenarios of circular cracks. Since realistic crack configurations detected using non-destructive methods are generally 3-D in nature, the study of 3-D effect of non-aligned cracks with different shapes is deemed necessary in order to obtain more practical guidance in the usage of rules speculated in Fitness-for-Service codes. In this study, the effect of a semi-elliptic surface crack on a quarter-circle corner crack in an infinitely large plate under uniaxial tension was investigated. To keep this study more focused, the size of the quarter-circle corner crack was kept constant. A detailed analysis was then given to the crack shape effect of the embedded semi-elliptic cracks on the fixed quarter-circle corner crack. The analysis is repeated for various combinations of separation distances S and H between the two cracks. The results from this study are collectively significant to the understanding of the correlation between the criteria and standards in Fitness-for-Service community and the consequence of their usage in engineering practice.
  Article Metrics


1. Okamura Y, Sakashita A, Fukuda T, et al. (2003) Latest SCC issues of core shroud and recirculation piping in Japanese BWRs. Transactions of the 17th International Conference on Structural Mechanics in Reactor Technology (SMIRT 17), Prague, Czech Republic, WG01-1.

2. Kamaya M, Haruna T (2006) Crack Initiation Model for Type 304 Stainless Steel in High Temperature Water. Corros Sci 48: 2442–56.    

3. ASME (2007) B&PV Code Section XI.

4. British Standards (2005) BritS 7910.

5. European Fitness-for-Service Network (FITNET), GTC1-2001-43049.

6. American Petroleum Institute (2007) Fitness-for-Service. API 579-1/ASME FFS-1.

7. The Japan Society of Mechanical Engineers (2008) Rules on Fitness-for-Service for Nuclear Power Plant. JSME S NA1-2008 (in Japanese).

8. Kamaya M (2008) Growth evaluation of multiple interacting surface cracks. Part I: Experiments and simulation of coalesced crack. Eng Fract Mech 75: 1350–1366.

9. Hasegawa K, Saito K, Miyazaki K (2009) Alignment Rule for Non-Aligned Flaws for Fitness-for Service Evaluations Based on LEFM. ASME JPVT 131: 041403.

10. Hasegawa K, Miyazaki K, Saito K (2010) Behavior of plastic collapse moments for pipes with two non-aligned flaws. ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, Bellevue, Washington, USA.

11. Hasegawa K, Miyazaki K, Saito K (2011) Plastic collapse loads for flat plates with dissimilar Non-aligned through-wall cracks. ASME 2011 Pressure Vessels and Piping Conference, Baltimore, Maryland, USA.

12. Miyazaki K, Hasegawa K, Saito K (2011) Effect of flaw dimensions on ductile fracture behavior of non-aligned multiple flaws in a plate. ASME 2011 Pressure Vessels and Piping Conference, Baltimore, Maryland, USA.

13. Suga K, Miyazaki K, Kawasaki S (2011) Study on the interaction of multiple flaws in ductile fracture process. ASME 2011 Pressure Vessels and Piping Conference, Baltimore, Maryland, USA.

14. Suga K, Miyazaki K, Senda R, et al. (2011) Ductile fracture simulation of multiple surface flaws. ASME 2011 Pressure Vessels and Piping Conference, Baltimore, Maryland, USA.

15. Ma Q, Levy C, Perl M (2013) A LEFM Based Study on the Interaction between an Edge and an Embedded Parallel Crack. ASME 2013 Pressure Vessels and Piping Conference, Paris, France.

16. Ma Q, Levy C, Perl M (2015) 3-D Interaction of a Corner Flaw with a Non-Aligned Surface Flaw in an Infinitely Large Plate under Tension. Procedia Eng 130: 711–730.    

17. Swanson Analysis System Inc. (2009) ANSYS 12 User Manual.

18. Ma Q (1999) Stress Concentration and Stress Intensity Factors of a Multi-eroded, Cracked Autofrettaged Pressurized Thick-Walled Cylinder. Master’s thesis, FIU.

19. Levy C, Perl M, Ma Q (2001) The Influence of Multiple Axial Erosions on a Three-Dimensional Crack in Determining the Fatigue Life of Autofrettaged Pressurized Cylinders. ASME JPVT 124: 1–6.

20. Levy C, Perl M, Kokkavessis N (1996) Three-Dimensional Interaction Effects in an Internally Multicracked Pressurized Thick-Walled Cylinder. Part II—Longitudinal Coplanar Crack Arrays. ASME JPVT 118: 364–368.

Copyright Info: © 2016, Qin Ma, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

Download full text in PDF

Export Citation

Article outline

Show full outline
Copyright © AIMS Press All Rights Reserved