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Paris' law

About: Paris' law is a research topic. Over the lifetime, 13815 publications have been published within this topic receiving 224818 citations. The topic is also known as: Paris-Erdogan law.


Papers
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Journal ArticleDOI
TL;DR: In this article, a fatigue lifing framework using a lead crack concept has been developed by the DSTO for metallic primary airframe components, which is based on years of detailed inspection and analysis of fatigue cracks in many specimens and aircraft components, and is an important additional tool for determining aircraft component fatigue lives in the RAAF fleet.

88 citations

Journal ArticleDOI
TL;DR: In this paper, the authors analyzed the propagation behavior of fatigue cracks arising from contact loading and derived stress intensity factors for a surface breaking crack in the presence of a near-surface inclusion, and under the influence of interacting asperities at the surface.
Abstract: This paper analyses the propagation behaviour of fatigue cracks arising from contact loading. Stress intensity factors are computed for a surface breaking crack in the presence of a near-surface inclusion, and under the influence of interacting asperities at the surface. With the use of the growth law of McEvily and Foreman (McEvily, A. J. The microstructure and design of alloys, vol. 2, Proc. 3rd Int. Conf. on the Strength of Metal and Alloys, Cambridge (1973)), crack propagation is studied as a function of the calculated mode II stress intensity range, $\Delta$K$_{II}$. Crack arrest is examined, the role of inclusions demonstrated, and a single-crack load-life calculation is performed, yielding results consistent with experimental observation. Finally, stress intensity factors are computed for a subsurface crack growing from an inclusion toward the surface, and the limitations of these results are discussed.

88 citations

Book
24 Jan 2000
TL;DR: In this paper, the authors proposed a method to estimate the fracture toughness of a plane strain fracture by measuring the growth rate of fatigue crack. But the method was not suitable for the case of small scale yielding cracks.
Abstract: Introduction: Summary References Fracture toughness: Introduction Energy approach to brittle fracture Stress intensity factors Some Mode I stress intensity factor solutions Limitations of the stress intensity factor approach Effects of small scale yielding Slant crack growth in thin sheets Effect of thickness on fracture toughness Effect of notch acuity on fracture toughness R-curves General yielding fracture mechanics Summary References. Plane strain fracture toughness testing: Introduction Specimen types Offset procedure Fatigue precracking Specimen size requirements Klc- Charpy correlations Chevron notch tests Summary References. Fatigue crack growth: Introduction Use of stress intensity factors Fatigue crack growth rate data Mechanisms of fatigue crack growth Threshold for fatigue crack growth Overall fatigue crack growth behaviour Crack closure Short cracks Fatigue crack growth under variable amplitude loading Weighted average stress range Cycle counting Summary References. Fatigue crack growth testing: Introduction Specimen types Specimen size requirement Fatigue precracking Crack path requirement Data reduction The threshold and near threshold crack growth rates Summary References. Fatigue crack paths: Introduction Crack path stability in two dimensions Crack growth from an initial mixed Modes I and II crack Constraints on crack paths in three dimensions Constraints on crack fronts in three dimensions Mode I crack growth in three dimensions Slant crack growth in thin sheets Summary References. Applications: Introduction Modelling of irregular cracks Static failure Constant amplitude fatigue crack growth Variable amplitude fatigue crack growth Proof test logic Leak-before-break Summary References.

88 citations

Journal ArticleDOI
TL;DR: In this article, the authors presented the numerical simulation and validation of a fatigue propagation test of a semi-elliptical crack located at the side of the rectangular section of a beam subjected to four-point bending.

87 citations

Journal ArticleDOI
TL;DR: In this article, near-threshold fatigue crack growth rate data were developed in annealed, quarter-hard, and full-hard copper at various load ratios, (R = σmin/σmax).
Abstract: Near-threshold fatigue crack growth rate data were developed in annealed, quarter-hard, and full-hard copper at various load ratios, (R = σmin/σmax). Increasing theR value decreases the resistance to threshold crack growth. At a fixed value ofR, annealed copper has the slowest near-threshold crack propagation rate while full-hard copper has the fastest crack growth rate. Waveform (sine and triangle) and specimen geometry (WOL, CT, and CCT) do not appear to affect the rates of near-threshold crack propagation. The influences of load ratio and material strength on threshold crack growth behavior can be rationalized by crack closure.

87 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023181
2022431
2021397
2020408
2019454
2018452