Results 151 to 160 of about 70,244 (209)

Fatigue Crack Propagation in Metals

Nature, 1966
PEARSON1 has recently discussed the problem of the rate of growth of a fatigue crack. He tabulated values of the stress intensity factor K necessary to cause a crack to grow under a repeated tensile loading cycle at a certain velocity in a number of alloys and showed that the ratio of K to the Young's modulus E of the material was roughly constant. The
N. E. FROST, J. R. DIXON
exaly   +5 more sources

Fatigue Crack Propagation

2017
This chapter explains the fatigue damage growth phenomena in FMLs, and provides theories to describe the growth of damage based on the individual fracture phenomena. The validity of various geometrical correction factors is discussed. The different crack geometries through-thickness and the crack paths, observed in FMLs, are explained for both in-axis ...
  +4 more sources

Fatigue Crack Propagation Threshold

Journal of Testing and Evaluation, 1989
Abstract Service-type fatigue loading conditions are critically analyzed with respect to their relevance for a fatigue crack growth threshold. It was found that a threshold should be experimentally determined as a function of the monotonic-plastic zone size (i.e., as a function of Kmax). For each Kmax the cyclic-plastic zone size depends
G Marci, DE Castro, V Bachmann
openaire   +1 more source

Fatigue Crack Propagation of Short Cracks

Journal of Engineering Materials and Technology, 1979
Previous studies have shown that both threshold stress intensity factors and fatigue crack growth rates are dependent on crack size. The average growth rates for very short cracks considerably exceed those given by conventional stress intensity-crack growth laws fitted to long crack data.
M. H. El Haddad, K. N. Smith, T. H. Topper   +2 more
openaire   +1 more source

Fatigue crack propagation. Report 2. A crack propagation model

Strength of Materials, 1988
1. A model of fatigue crack propagation was proposed; the model is based on determining the specific energy of inelastic strain cumulated at the distance X* from the crack tip, with an allowance made for the energy irreversibly scattered within the scope of the zone of damageRm (Rm≥X*). 2.
V. T. Troshchenko, P. V. Yasnii, V. V. Pokrovskii   +2 more
openaire   +1 more source

Secondary cracking process during fatigue crack propagation

Engineering Fracture Mechanics, 1973
Abstract Using the scanning electron microscope, fatigue striations in secondary microcracks normal to the main fatigue cracks have been observed on fracture surfaces of fatigue specimens made from 2024 and 2618 aluminium alloys, a Ti-6A1-V titanium alloy, and an Incolloy 901 nickel-base refractory alloy.
P. Gauthier, H. De Rabaudy, J. Auvinet
openaire   +1 more source

Modeling Environment-Assisted Fatigue Crack Propagation

2008
Predicting fatigue crack growth in metals under random loadings remains difficult since fatigue crack growth is very sensitive to load history. Load history effect in fatigue is known for decades to stem from plastic deformation in the vicinity of the crack tip.
Ruiz-Sabariego, Juan, Pommier, Sylvie
openaire   +2 more sources

Fatigue crack propagation in polyacetal

Journal of Materials Science, 1978
The fatigue crack propagation characteristics of a typical commercial homopolymer and copolymer polyacetal were determined. These materials were found to be the most fatigue resistant plastics examined to date, thus confirming the generally high fatigue resistance of all crystalline polymers.
R. W. Hertzberg, M. D. Skibo, J. A. Manson   +2 more
openaire   +1 more source