A Wide Range Stress Intensity Factor Expression for the C-Shaped Specimen

1980 ◽  
Vol 8 (6) ◽  
pp. 314 ◽  
Author(s):  
KC Lieb ◽  
R Horstman ◽  
KA Peters ◽  
RL Meltzer ◽  
MB Vieth ◽  
...  
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Wide Range ◽  
Factor Expression

Wide range stress-intensity-factor expression for an edge-cracked round bar bend specimen

1989 ◽  
Vol 29 (2) ◽  
pp. 166-168 ◽  
Author(s):  
J. H. Underwood ◽  
R. L. Woodward
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Bend Specimen ◽  
Wide Range ◽  
Round Bar ◽  
Factor Expression

A Review of K-Solutions for Through-Thickness Flaws in Cylinders and Spheres

2007 ◽  
Author(s):  
Ali Mirzaee Sisan ◽  
Isabel Hadley ◽  
Sarah E. Smith ◽  
Mike Smith
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Loading Conditions ◽  
Wide Range ◽  
Cylinders And Spheres

This paper reviews different stress intensity factor solutions for a wide range of configurations and loading conditions for a cylinder with axial and circumferential through thickness cracks and a sphere with through thickness meridional (equatorial) cracks. The most appropriate solutions to use are identified.

Comparison of the Stress Intensity Factor Influence Coefficients for Axial ID Surface Cracks in Cylinders of RSE-M and API 579-1

2015 ◽  
Author(s):  
Patrick Le Delliou ◽  
Stéphane Chapuliot
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Nuclear Power ◽  
Crack Depth ◽  
Wall Stress ◽  
Surface Point ◽  
Evaluation Procedures ◽  
Influence Coefficients ◽  
Wide Range

Analytical evaluation procedures for determining the acceptability of flaw detected during in-service inspection of nuclear power plant components are provided in Appendix 5.4 of the French RSE-M Code. Linear elastic fracture mechanics based evaluation procedures require calculation of the stress intensity factor (SIF). In Appendix 5.4 of the RSE-M Code, influence coefficients needed to compute the SIF are provided for a wide range of surface axial or circumferential flaws in cylinders, the through-wall stress field being represented by a cubic equation. On the other hand, Appendix C of API 579-1 FFS procedure provides also a very complete set of influence coefficients. The paper presents the comparison of the influence coefficients from both documents, focused on axial ID semi-elliptical surface flaws in cylinders. The cylinder and crack geometries are represented by three ratios: Ri/t, a/t, and a/c, where Ri, t, a, and c are respectively the inner radius, the wall thickness, the crack depth and one-half of the crack length. The solutions for the coefficients G0 and G1 at the deepest point and at the surface point are investigated. At the deepest point, the agreement between the solutions is good, the relative difference being lower than 2 %, except for the plate (Ri/t = ∞) at a/c = 0.125 and 0.0625 and a/t = 0.8 (around 5 %). At the surface point, the agreement between both solutions is not so good. At this point, the relative differences depend strongly on the a/c ratio, being larger for elongated cracks (with low a/c ratios). However, it must be recalled that the absolute values of the coefficients are low at the surface point for elongated cracks, and that for these cracks the critical point regarding the stress intensity factor is the deepest point.

Stress intensity factor expression for center-cracked butt joint considering the effect of joint shape

2012 ◽  
Vol 35 ◽  
pp. 72-79 ◽  
Author(s):  
T. Wang ◽  
J.G. Yang ◽  
X.S. Liu ◽  
Z.B. Dong ◽  
H.Y. Fang
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Butt Joint ◽  
Factor Expression ◽  
Joint Shape

Effect of water vapor pressure on fatigue crack growth in Al–Zn–Cu–Mg over wide-range stress intensity factor loading

2015 ◽  
Vol 137 ◽  
pp. 34-55 ◽  
Author(s):  
J.T. Burns ◽  
R.W. Bush ◽  
J.H. Ai ◽  
J.L. Jones ◽  
Y. Lee ◽  
...  
Keyword(s):  
Stress Intensity Factor ◽  
Fatigue Crack ◽  
Water Vapor ◽  
Stress Intensity ◽  
Fatigue Crack Growth ◽  
Intensity Factor ◽  
Vapor Pressure ◽  
Water Vapor Pressure ◽  
Factor Loading ◽  
Wide Range

Stress intensity factor expression for butt joint with single-edge crack considering the effect of joint shape

2012 ◽  
Vol 36 ◽  
pp. 748-756 ◽  
Author(s):  
T. Wang ◽  
J.G. Yang ◽  
X.S. Liu ◽  
Z.B. Dong ◽  
H.Y. Fang
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Edge Crack ◽  
Butt Joint ◽  
Single Edge ◽  
Factor Expression ◽  
Joint Shape

scholarly journals The Application of Fracture Mechanics to the Problem of Crevasse Penetration

1976 ◽  
Vol 17 (76) ◽  
pp. 223-228 ◽  
Author(s):  
R. A. Smith
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Fracture Mechanics ◽  
Intensity Factor ◽  
Stress Intensity Factors ◽  
Close Agreement ◽  
Elastic Stress ◽  
Intensity Factors ◽  
Wide Range ◽  
Sharp Crack

AbstractThe elastic stress intensity factor is a parameter used in fracture mechanics to describe stress conditions in the vicinity of the tip of a sharp crack. By superimposing solutions of stress intensity factors for different loading conditions, equations are derived which model crevasses in ice. Solutions are presented for the theoretical depth of isolated crevasses, free from or partially filled with water. Close agreement exists with a previous calculation by Weertman using a different technique. The effect of crevasse spacing is investigated and it is demonstrated that closer spacing always reduces crevasse depth, but over a wide range of spacing the predicted variation in depth is slight.

Analytical Solution of Stress Intensity Factor for Clamped SENT Specimens

2016 ◽  
Author(s):  
Xian-Kui Zhu
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Oil And Gas ◽  
Full Range ◽  
Test Procedure ◽  
Direct Determination ◽  
Oil And Gas Industry ◽  
Wide Range ◽  
Low Constraint

Single edge-notched tension (SENT) specimen in clamped end conditions was identified as a low-constraint fracture test specimen, and is preferred for use in the oil and gas industry in direct determination of fracture toughness or resistance curves for low-constraint conditions. Over the years, different SENT test methods have been developed, including DNV-RP-F108 (2006) test practice, CanMet (2008) J-integral resistance curve test procedure, ExxonMobil (2010) CTOD test procedure, and others. On this basis, a SENT test standard BS 8571 was developed and published in December of 2014. However, the stress intensity factor K used in BS 8571 was expressed in a very complicated function. Recently, the present author found that this K solution is incorrect for deep cracks of a/W>0.6, and corrected the K solution in the original format of polynomial functions. To verify the corrected result, this paper obtained a wide-range, simpler analytical K solution for clamped SENT specimens using the crack compliance method. Results show that the proposed K solution and its curve-fit are more accurate over the full range of crack sizes, and agree well with available finite element results.

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