Fatigue of specimens subjected to combined loading. Role of hydrostatic pressure

Qilafku, G.; Kadi, Nawar; Dobranski, J; Azari, Z.; Gjonaj, M.; Pluvinage, G.

doi:10.1016/s0142-1123(01)00030-5

Cited by 50 publications

(19 citation statements)

References 20 publications

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“…The degree of accuracy of the method has been checked by using 290 experimental data for notched specimens made from SAE 1045, 25 AISI 316, 38 Low carbon steel 39 (in the presence of notch tip radius of 0.2 mm and 0.4 mm) and SAE 1045 40 (with a transverse circular hole). Specimen geometries are shown in Fig.…”

Section: Methods Validation By Using Notched Componentsmentioning

confidence: 99%

A stress‐based method to predict lifetime under multiaxial fatigue loadings

Lazzarin

Susmel

2003

Fatigue Fract Eng Mat Struct

138

136

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This paper extends to low/medium-cycle fatigue a stress-based method recently proposed by the same authors for high-cycle multiaxial fatigue assessments. By considering the plane of maximum shear stress amplitude coincident with the microcrack initiation plane, the method requires the calculation both of the maximum shear stress amplitude and the maximum normal stress relative to the same plane. Multiaxial fatigue life estimates are made by means of bi-parametric modified Wohler curves, which take into account the mean stress effect, the influence of the out-of-phase angle and the presence of notches by using a generalization to multiaxial fatigue of the fatigue strength reduction factor K-f. Approximately 700 experimental data taken from the literature are used to demonstrate that the method is a useful tool to summarize fatigue strength data of both smooth and notched components, subjected to either in-phase or out-of-phase loads. Finally, a simple practical rule for the calculation of the multiaxial fatigue strength reduction factor is proposed

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Section: Methods Validation By Using Notched Componentsmentioning

confidence: 99%

A stress‐based method to predict lifetime under multiaxial fatigue loadings

Lazzarin

Susmel

2003

Fatigue Fract Eng Mat Struct

138

136

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“…Boukharouba et al (1995) and Pluvinage (1997) achieved good results in elastic domain and then extended the analysis to elastic-plastic material behaviour. Qilafku (2001) reveal good progress in determining the NSIF in the ''elastoplastic'' mode I. Figure 1 presents the stress distribution computed via FEM analysis following the volumetric approach (VA) tool.…”

Section: Computing the Notch Stress Intensity Factor In Mode Imentioning

confidence: 99%

“…To determine this effective distance, (Qilafku et al 2001) used the relative stress gradient, defined as the ratio of the stress gradient and the stress r(x): where v is the gradient relative of stress (mm -1 ) and x distance (mm).…”

Section: Computing the Notch Stress Intensity Factor In Mode Imentioning

confidence: 99%

Experimental–Numerical Characterization of the Fracture Behaviour of P264GH Steel Notched Pipes Subject to Internal Pressure

Moustabchir

Azari

Hariri

et al. 2017

Iran J Sci Technol Trans Mech Eng

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The rupture phenomenon of a mechanical structure requires critical consideration, because of its safety constructions. A detailed experiment of material features as well as the Young's modulus, yield strength, material toughness or fracture resistance provides useful information to predict the life integrity of a pipe structure. This paper presents the most accurate experimental techniques for characterization of a pipe-like structure to assess its reliability. Standard traction tests, dynamic Charpy tests and pressure tests were performed to envisage the crack propagation progress. Detailed information on fracture process was obtained by a robust numerical approach using the finite element method.

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“…(This is an approach that has been followed many several researchers for the formulation of fatigue failure criteria; see [43] for a review). The volumetric part is stored either in tension (denoted as a vþ e ) either in compression (denoted as a vÀ e ).…”

Section: Elastic Strain Energy That Can Possibly Be Released In Case mentioning

confidence: 99%