Fatigue crack growth (FCG)
Fatigue crack growth analysis of pre-strained 7475–T7351 aluminum alloy
... Aluminum alloys are widely used in aeronautical design due to their good mechanical properties and low densities. Among these alloys, 7475 (Al–Zn–Mg–Cu), modified from 7075, is successfully used due to strength similar ...
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Role of plasticity-induced crack closure in fatigue crack growth
... induced crack closure (PICC), has long been focused as supposedly controlling factor of fatigue crack growth ...plane-strain crack under constant amplitude load cycling at different ...
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Fatigue crack growth assessments in welded components including crack closure effects: Experiments and 3-D numerical modeling
... of fatigue crack growth behav- ior in steel weldments including crack closure effects and their coupled interaction with weld strength ...of crack closure effects on FCGR to steel ...
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Statistical modeling of fatigue crack growth rate in Inconel alloy 600
... Inconel alloy 600 is widely used in heat-treating industry, in chemical and food processing, in aeronautical industry, and in nuclear engineering. In this work, fatigue crack growth rate (FCGR) was ...
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An algorithm for fatigue crack growth applied to mixed and biaxial mode loadings
... Fatigue crack propagation simulations performed in this paper, uses the automatic algorithm previously developed by Baptista et ...the fatigue crack propagation rate is determined using the ...
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Fatigue Crack Growth Resistance and Crack Closure Behavior in two Aluminum Alloys for Aeronautical Applications
... with fatigue crack growth behav- ior. Crack closure is important because it tends to alter the relationship between the applied stress intensity factor range ( ∆K = K max – K min ) and that ...
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Mode I+II Fatigue Crack Growth Delay by Stop-Holes
... the crack tip transforms the stress singularity of the crack tip to a notch, reducing thus the values of the stresses, it is a widely used technique for simple and economic repair ...the fatigue ...
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Statistical modeling of fatigue crack growth rate in pre-strained 7475-T7351 aluminum alloy
... Fatigue crack growth rate in pre-strained 7475-T7351 alu- minum alloy plate was evaluated in air and at room temperature under constant amplitude loading at stress ratios of ...
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EFFECT OF PRESTRAIN AND BAKE HARDENING TREATMENT ON THE FATIGUE CRACK GROWTH AND CRACK CLOSURE IN TWO DUAL-PHASE STEELS
... research, fatigue crack growth da/dN x ∆ K has been studied in two dual-phase steels broadly used in the automotive industry, with 7% to 12% of martensite volume ...the fatigue resistance was ...
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Effect of Interrupted Ageing and Retrogression-Reageing Treatments on Fatigue Crack Growth with a Single Applied Overload in 7050 Aluminum Alloy
... and fatigue crack growth rate of 7050 aluminum alloy: the two-step T6I4-65 condition, and the three-step RRA condition (See experimental ...the fatigue crack ...the crack closure ...
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Fatigue crack growth rates on the weld metal of high heat input submerged arc welding.
... The welded zone in multipass welding generally has a varied and complex microstructure due to the reheating promoted by the sub- sequent weld passes; however, this effect does not damage the me- chanical properties. A ...
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Numerical modelling of fatigue crack growth using XFEM
... the crack coordinates for each enriched element using the subroutine ...the crack into the enriched elements, enabling the creation of the ...the crack is just a connection between two points in the ...
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Pre-strain effects on fatigue crack propagation behaviour of a pressure vessels steel
... The Morrow constants resulting from Equations (5.4)-(5.7) can be seen in Table 5.3. These constants, estimated using the strain energy density approach, are similar to those obtained by fitting the Coffin-Manson and ...
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Fatigue crack propagation in AA 7050-T7451 alloy considering environment, stress ratio, rolling direction and waveform effects
... on fatigue crack growth rate of a high strength aluminum alloy AA7050-T7451 used commonly for aeronautical structural ...on fatigue crack growth ...
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Near tip strain evolution of a growing fatigue crack
... with fatigue crack growth since the 60s, our interest in this line of enquiry began some 10 years ago, mainly using numerical simulations [3-7], where near-tip strain ratchetting was found to be ...
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Effect of grinding and aging on subcritical crack growth of a Y-TZP ceramic
... The contrary occurs in the fastest loading rate (100 MPa/s): the time for crack growth and water corrosion is small, and flexural strength is the highest in each group. A decrease in strength was found for ...
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Physiological indicators of fatigue
... to fatigue in rink hockey ...evaluate fatigue in this ...of fatigue through the combination of both ...that fatigue related to perceived exertion could be predicted by a direct relation to LAC ...
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Propriedades psicométricas da Dutch Fatigue Scale e Dutch Exertion Fatigue Scale: versão brasileira.
... Fadiga é uma resposta humana em diversas situações agudas e crônicas e também na população geral. Este artigo relata estudo realizado para estimar confiabilidade e validade da Dutch Fatigue Scale (DUFS) e da Dutch ...
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Effect of crack propagation on crack tip fields
... Gauss point, the monotonic plastic deformation increases and reversed plastic deformation starts. The plastic deformation has he highest magnitude when the Gauss point is immediately ahead of crack tip (position n ...
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Crack Drogas lícitas e ilícitas Vizente Besteirol Crack
... Após fumar, a pessoa entra numa euforia que dura de 15 a 20 minutos aproximadamente quando, ao passar o efeito, esta entra numa depressão profunda o que faz com que o indivíduo procure n[r] ...
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