A multiaxial fatigue life estimation techniqueBannantine, J.A. and Socie, D.F. Proc. Conf. Advances in Fatigue Lifetime Predictive Techniques, San Francisco, California, USA, 24 Apr. 1990 249–275

Fatigue life estimation accuracy of mechanical parts and assemblies has always been the source of concern in different industries. The main contribution of this article lies in a study on the accuracy of different multiaxial fatigue criteria, proposing and investigating the accuracy of four optimized fatigue crack initiation life estimation methods—volume, weighted volume, surface and point, thereby improving the multiaxial fatigue life estimation accuracy. In order to achieve the goal, the fatigue lives of bolt clamped specimens, previously tested under defined experimental conditions, were estimated during fatigue crack initiation and fatigue crack growth and then summed together. In the fatigue crack initiation part, a code was written and used in the MATLAB software environment based on critical plane approach and the different multiaxial fatigue criteria. Besides the AFGROW software was utilized to estimate the crack growth share of fatigue life. Experimental and numerical results showed to be in agreement. Furthermore, detailed study and comparison of the results with the available experimental data showed that a combination of Smith–Watson–Topper approach and volume method results in lower error values, while a combination of Fatemi–Socie criterion and surface or point method presents estimated lives with lower error values. In addition, the numerical proposed procedure resulted in a good prediction of the location of fatigue crack initiation.

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Time and frequency domain models for multiaxial fatigue life estimation under random loading

Frattura ed Integrità Strutturale ◽

10.3221/igf-esis.33.41 ◽

2015 ◽

Vol 9 (33) ◽

pp. 376-381 ◽

Cited By ~ 2

Author(s):

Andrea Carpinteri ◽

Andrea Spagnoli ◽

Camilla Ronchei ◽

Sabrina Vantadori

Keyword(s):

Fatigue Life ◽

Frequency Domain ◽

Multiaxial Fatigue ◽

Random Loading ◽

Life Estimation ◽

Fatigue Life Estimation ◽

Domain Models

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Multiaxial fatigue life estimation in welded joints using the critical plane approach

International Journal of Fatigue ◽

10.1016/j.ijfatigue.2008.03.024 ◽

2009 ◽

Vol 31 (1) ◽

pp. 188-196 ◽

Cited By ~ 75

Author(s):

A CARPINTERI ◽

A SPAGNOLI ◽

S VANTADORI

Keyword(s):

Fatigue Life ◽

Welded Joints ◽

Multiaxial Fatigue ◽

Critical Plane ◽

Life Estimation ◽

Fatigue Life Estimation ◽

Critical Plane Approach

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A railway wheel evaluation under multiaxial loading conditions

MATEC Web of Conferences ◽

10.1051/matecconf/201930009002 ◽

2019 ◽

Vol 300 ◽

pp. 09002

Author(s):

Henrique Soares ◽

Vitor Anes ◽

Manuel Freitas ◽

Luis Reis

Keyword(s):

Fatigue Life ◽

Mechanical Tests ◽

Multiaxial Fatigue ◽

Life Assessment ◽

Crack Plane ◽

Multiaxial Loading ◽

Loading Conditions ◽

Railway Wheel ◽

Life Estimation ◽

Fatigue Life Estimation

Railway mechanical components are subject to thousands of fatigue cycles. Fatigue damage and life assessment is still an open issue. Under service multiaxial loading conditions several challenges can arise. In this study an evaluation of a railway wheel material is performed, i.e. the material properties and the working conditions are taking into account and evaluated. Different mechanical tests are carried out, namely fatigue tests under uniaxial (LCF+HCF) and biaxial (HCF) conditions, applied to several specimens made from the railway wheel. Multiaxial fatigue models were considered regarding the fatigue life estimation. Moreover, fatigue crack plane measurements were compared with estimations from several critical plane models. The applied models provided very satisfactory results, regarding the fatigue life estimation and the initial crack initiation plane under the multiaxial loadings conditions.

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