Erosions and Their Effect on the Fatigue Life of Thick Walled, Autofrettaged, Pressurized Vessels

C. Levy; M. Perl; Q. Ma

doi:10.1115/1.1593698

Journal of Pressure Vessel Technology | Volume 125 | Issue 3 | TECHNICAL PAPERS

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TECHNICAL PAPERS

Erosions and Their Effect on the Fatigue Life of Thick Walled, Autofrettaged, Pressurized Vessels

C. Levy, M. Perl and Q. Ma

[+] Author and Article Information

C. Levy

Dept. of Mechanical Engineering, Florida International University, Miami, FL 33199

M. Perl

Pearlstone Center for Aeronautical Studies, School of Engineering Sciences, Ben Gurion University of the Negev, Beer Sheva 84105 Israel

Q. Ma

Mechanical Engineering Department, Carnegie-Mellon University, Pittsburgh, PA 15213

J. Pressure Vessel Technol 125(3), 242-247 (Aug 01, 2003) (6 pages) doi:10.1115/1.1593698 History: Received March 12, 2003; Revised April 23, 2003; Online August 01, 2003

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Figures

(a) A half cylinder with three finite erosions and one crack. X–Y plane of symmetry is Z=0; (b) finite erosion front view.

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(a) The submodel used; (b) definition of the angle ϕ; (c) crack geometry—the wedge angle γ is 4 deg

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(a) Stresses in eroded cylinder (half of cylinder shown); (b) stresses in cylinder with nine erosions (half of cylinder shown)

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SCF versus erosion number R_o/R_i=2,d/h=1,d/t=0.10; α=12 deg

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SCFs versus erosion number R_o/R_i=2,d/h=1, α=12 deg

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Maximum K_Ieff versus erosion ellipticity (three erosions) d/t=0.05,a/t=0.05, α=12 deg

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Effective SIFs for an eroded pressurized autofrettaged cylinder r^′/t=0.05,d/t=0.05, α=12 deg

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Maximums of the K_Ieff versus erosion curvature (three erosions) d/t=0.05,a/t=0.05, α=30 deg

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Maximums of K_Ieff versus erosion ellipticity (three erosions) d/t=0.05,a/t=0.05, α=12 deg

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Maximums of K_Ieff versus erosion span angle (three erosions) d/t=0.05,d/h=1,a/t=0.05

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Maximums of K_Ieff versus erosion depth (three erosions) d/h=1,a/t=0.05, α=12 deg

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Maximums of K_Ieff versus crack depth (three erosions) d/t=0.05,d/h=1, α=7 deg

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(a) Normalized effective SIFs versus ϕ for a crack emanating from the farthest of three equidistant erosions; 30% autofrettage, d/t=0.05,d/h=1,a/c=0.5,a/t=0.05, α=12 deg; (b) normalized effective SIF’s versus ϕ for a crack emanating from the farthest of three equidistant erosions; 60% autofrettage, d/t=0.05,d/h=1,a/c=1.5,a/t=0.05, α=12 deg

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Maximum normalized effective SIFs versus L_e/L for a crack emanating from the farthest of three equidistant erosions, 30% and 60% autofrettage, d/t=0.05,d/h=1,a/t=0.05, α=12 deg

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Maximum normalized SIFs versus L_e/L for a crack emanating from the farthest of three equidistant erosions, 30% and 60% autofrettage, d/t=0.05,a/c=1,a/t=0.05, α=12 deg

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Maximum normalized effective SIFs versus span angle for a crack emanating from the farthest of three erosions; 30% autofrettage, d/t=0.05,d/h=1,a/t=0.15,L_e/L=0.4

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Maximum normalized effective SIFs versus crack depth for one crack and three erosions; 30% autofrettage, d/t=0.05,d/h=1,a/t=0.15,L_e/L=0.4, α=7 deg

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Levy CC, Perl MM, Ma QQ. Erosions and Their Effect on the Fatigue Life of Thick Walled, Autofrettaged, Pressurized Vessels. ASME. J. Pressure Vessel Technol. 2003;125(3):242-247. doi:10.1115/1.1593698.

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Erosions and Their Effect on the Fatigue Life of Thick Walled, Autofrettaged, Pressurized Vessels

References

Figures

(a) A half cylinder with three finite erosions and one crack. X–Y plane of symmetry is Z=0; (b) finite erosion front view.

(a) The submodel used; (b) definition of the angle ϕ; (c) crack geometry—the wedge angle γ is 4 deg

(a) Stresses in eroded cylinder (half of cylinder shown); (b) stresses in cylinder with nine erosions (half of cylinder shown)

SCF versus erosion number R_o/R_i=2,d/h=1,d/t=0.10; α=12 deg

SCFs versus erosion number R_o/R_i=2,d/h=1, α=12 deg

Maximum K_Ieff versus erosion ellipticity (three erosions) d/t=0.05,a/t=0.05, α=12 deg

Effective SIFs for an eroded pressurized autofrettaged cylinder r^′/t=0.05,d/t=0.05, α=12 deg

Maximums of the K_Ieff versus erosion curvature (three erosions) d/t=0.05,a/t=0.05, α=30 deg

Maximums of K_Ieff versus erosion ellipticity (three erosions) d/t=0.05,a/t=0.05, α=12 deg

Maximums of K_Ieff versus erosion span angle (three erosions) d/t=0.05,d/h=1,a/t=0.05

Maximums of K_Ieff versus erosion depth (three erosions) d/h=1,a/t=0.05, α=12 deg

Maximums of K_Ieff versus crack depth (three erosions) d/t=0.05,d/h=1, α=7 deg

Maximum normalized effective SIFs versus L_e/L for a crack emanating from the farthest of three equidistant erosions, 30% and 60% autofrettage, d/t=0.05,d/h=1,a/t=0.05, α=12 deg

Maximum normalized SIFs versus L_e/L for a crack emanating from the farthest of three equidistant erosions, 30% and 60% autofrettage, d/t=0.05,a/c=1,a/t=0.05, α=12 deg

Maximum normalized effective SIFs versus span angle for a crack emanating from the farthest of three erosions; 30% autofrettage, d/t=0.05,d/h=1,a/t=0.15,L_e/L=0.4

Maximum normalized effective SIFs versus crack depth for one crack and three erosions; 30% autofrettage, d/t=0.05,d/h=1,a/t=0.15,L_e/L=0.4, α=7 deg

Tables

Errata

Discussions

Related Content

Journals

Conference Proceedings

eBooks

Erosions and Their Effect on the Fatigue Life of Thick Walled, Autofrettaged, Pressurized Vessels

References

Figures

(a) A half cylinder with three finite erosions and one crack. X–Y plane of symmetry is Z=0; (b) finite erosion front view.

(a) The submodel used; (b) definition of the angle ϕ; (c) crack geometry—the wedge angle γ is 4 deg

(a) Stresses in eroded cylinder (half of cylinder shown); (b) stresses in cylinder with nine erosions (half of cylinder shown)

SCF versus erosion number Ro/Ri=2,d/h=1,d/t=0.10; α=12 deg

SCFs versus erosion number Ro/Ri=2,d/h=1, α=12 deg

Maximum KIeff versus erosion ellipticity (three erosions) d/t=0.05,a/t=0.05, α=12 deg

Effective SIFs for an eroded pressurized autofrettaged cylinder r′/t=0.05,d/t=0.05, α=12 deg

Maximums of the KIeff versus erosion curvature (three erosions) d/t=0.05,a/t=0.05, α=30 deg

Maximums of KIeff versus erosion ellipticity (three erosions) d/t=0.05,a/t=0.05, α=12 deg

Maximums of KIeff versus erosion span angle (three erosions) d/t=0.05,d/h=1,a/t=0.05

Maximums of KIeff versus erosion depth (three erosions) d/h=1,a/t=0.05, α=12 deg

Maximums of KIeff versus crack depth (three erosions) d/t=0.05,d/h=1, α=7 deg

Maximum normalized effective SIFs versus Le/L for a crack emanating from the farthest of three equidistant erosions, 30% and 60% autofrettage, d/t=0.05,d/h=1,a/t=0.05, α=12 deg

Maximum normalized SIFs versus Le/L for a crack emanating from the farthest of three equidistant erosions, 30% and 60% autofrettage, d/t=0.05,a/c=1,a/t=0.05, α=12 deg

Maximum normalized effective SIFs versus span angle for a crack emanating from the farthest of three erosions; 30% autofrettage, d/t=0.05,d/h=1,a/t=0.15,Le/L=0.4

Maximum normalized effective SIFs versus crack depth for one crack and three erosions; 30% autofrettage, d/t=0.05,d/h=1,a/t=0.15,Le/L=0.4, α=7 deg

Tables

Errata

Discussions

Related Content

Journals

Conference Proceedings

eBooks

SCF versus erosion number R_o/R_i=2,d/h=1,d/t=0.10; α=12 deg

SCFs versus erosion number R_o/R_i=2,d/h=1, α=12 deg

Maximum K_Ieff versus erosion ellipticity (three erosions) d/t=0.05,a/t=0.05, α=12 deg

Effective SIFs for an eroded pressurized autofrettaged cylinder r^′/t=0.05,d/t=0.05, α=12 deg

Maximums of the K_Ieff versus erosion curvature (three erosions) d/t=0.05,a/t=0.05, α=30 deg

Maximums of K_Ieff versus erosion ellipticity (three erosions) d/t=0.05,a/t=0.05, α=12 deg

Maximums of K_Ieff versus erosion span angle (three erosions) d/t=0.05,d/h=1,a/t=0.05

Maximums of K_Ieff versus erosion depth (three erosions) d/h=1,a/t=0.05, α=12 deg

Maximums of K_Ieff versus crack depth (three erosions) d/t=0.05,d/h=1, α=7 deg

Maximum normalized effective SIFs versus L_e/L for a crack emanating from the farthest of three equidistant erosions, 30% and 60% autofrettage, d/t=0.05,d/h=1,a/t=0.05, α=12 deg

Maximum normalized SIFs versus L_e/L for a crack emanating from the farthest of three equidistant erosions, 30% and 60% autofrettage, d/t=0.05,a/c=1,a/t=0.05, α=12 deg

Maximum normalized effective SIFs versus span angle for a crack emanating from the farthest of three erosions; 30% autofrettage, d/t=0.05,d/h=1,a/t=0.15,L_e/L=0.4

Maximum normalized effective SIFs versus crack depth for one crack and three erosions; 30% autofrettage, d/t=0.05,d/h=1,a/t=0.15,L_e/L=0.4, α=7 deg