Multiaxial fatigue assessment of steels with non-metallic inclusions by means of adapted critical plane criteria

2020 ◽  
Vol 108 ◽  
pp. 102585 ◽  
Author(s):  
Pedro Vinícius Sousa Machado ◽  
Lucas Carneiro Araújo ◽  
Marcos Venicius Soares ◽  
Luis Reis ◽  
José Alexander Araújo
Keyword(s):  
Multiaxial Fatigue ◽  
Critical Plane ◽  
Fatigue Assessment ◽  
Metallic Inclusions

Multiaxial fatigue assessment using a simplified critical plane-based criterion

2011 ◽  
Vol 33 (8) ◽  
pp. 969-976 ◽  
Author(s):  
Andrea Carpinteri ◽  
Andrea Spagnoli ◽  
Sabrina Vantadori
Keyword(s):  
Multiaxial Fatigue ◽  
Critical Plane ◽  
Fatigue Assessment

scholarly journals The use of a modified critical plane model to assess multiaxial fatigue of steels with nonmetallic inclusions

2019 ◽  
Vol 300 ◽  
pp. 16005
Author(s):  
Pedro Vinícius Sousa Machado ◽  
Lucas Carneiro Araújo ◽  
Marcos Venicius Soares ◽  
José Alexander Araújo
Keyword(s):  
Detrimental Effect ◽  
Nonmetallic Inclusions ◽  
Multiaxial Fatigue ◽  
Critical Plane ◽  
Small Defect ◽  
Metallic Inclusions ◽  
Critical Plane Approach ◽  
Aisi 4140 ◽  
Fatigue Model ◽  
Do So

The goal of this research is to investigate the detrimental effect of non-metallic inclusions on the fatigue strength of the AISI 4140 steel under multiaxial loading conditions. In order to do so, a multiaxial fatigue model based on the critical plane approach is coupled with Murakami’s √area model. The proposed adaptation is very easy to calibrate and can also account for the higher probability of existing a fatal small defect as the volume of stresses material increases. Experimental multiaxial fatigue data were generated and compared with the estimates provided by the adapted multiaxial fatigue model and with its original version. The errors found are not higher than 10%.

scholarly journals Multiaxial fatigue assessment of crankshafts by local stress and critical plane approach

2016 ◽  
Vol 10 (38) ◽  
pp. 47-53 ◽  
Author(s):  
M. Leitner ◽  
F. Grun ◽  
Z. Tuncali ◽  
R. Steiner ◽  
W. Chen
Keyword(s):  
Local Stress ◽  
Multiaxial Fatigue ◽  
Critical Plane ◽  
Fatigue Assessment ◽  
Critical Plane Approach

Multiaxial Fatigue of 16MnR Steel

2008 ◽  
Vol 131 (2) ◽  
Author(s):  
Zengliang Gao ◽  
Tianwen Zhao ◽  
Xiaogui Wang ◽  
Yanyao Jiang
Keyword(s):  
Pure Shear ◽  
Ambient Air ◽  
Shear Loading ◽  
Multiaxial Fatigue ◽  
Experimental Results ◽  
Pressure Vessel Steel ◽  
Critical Plane ◽  
Cracking Behavior ◽  
Vessel Steel ◽  
Axial Torsion

Uniaxial, torsion, and axial-torsion fatigue experiments were conducted on a pressure vessel steel, 16MnR, in ambient air. The uniaxial experiments were conducted using solid cylindrical specimens. Axial-torsion experiments employed thin-walled tubular specimens subjected to proportional and nonproportional loading. The true fracture stress and strain were obtained by testing solid shafts under monotonic torsion. Experimental results reveal that the material under investigation does not display significant nonproportional hardening. The material was found to display shear cracking under pure shear loading but tensile cracking under tension-compression loading. Two critical plane multiaxial fatigue criteria, namely, the Fatemi–Socie criterion and the Jiang criterion, were evaluated based on the experimental results. The Fatemi–Socie criterion combines the maximum shear strain amplitude with a consideration of the normal stress on the critical plane. The Jiang criterion makes use of the plastic strain energy on a material plane as the major contributor to the fatigue damage. Both criteria were found to correlate well with the experiments in terms of fatigue life. The predicted cracking directions by the criteria were less satisfactory when comparing with the experimentally observed cracking behavior under different loading conditions.

Multiaxial fatigue assessment of jacket-supported offshore wind turbines considering multiple random correlated loads

2021 ◽  
Vol 169 ◽  
pp. 1252-1264
Author(s):  
Chaoshuai Han ◽  
Kun Liu ◽  
Yongliang Ma ◽  
Peijiang Qin ◽  
Tao Zou
Keyword(s):  
Wind Turbines ◽  
Multiaxial Fatigue ◽  
Offshore Wind ◽  
Fatigue Assessment ◽  
Offshore Wind Turbines

An Experimental Evaluation for Four Multiaxial Fatigue Approaches

2014 ◽  
Vol 627 ◽  
pp. 425-428
Author(s):  
Dan Jin ◽  
Da Jiang Tian ◽  
Qi Zhou Wu ◽  
Wei Lin
Keyword(s):  
Low Cycle Fatigue ◽  
Multiaxial Fatigue ◽  
304 Stainless Steel ◽  
Normal Strain ◽  
Cycle Fatigue ◽  
Critical Plane ◽  
Maximum Shear Strain ◽  
Rainflow Cycle Counting ◽  
Tubular Specimens ◽  
Damage Rule

A series of tests for low cycle fatigue were conducted on the tubular specimens for 304 stainless steel under variable amplitude and irregular axial-torsional loading. Rainflow cycle counting and linear damage rule are used to calculate fatigue damage and four approaches, e.g. SWT(Smith-Watson-Topper), KBM(Kandil-Brown-Miller), FS(Fatemi-Socie), and LKN(Lee-Kim-Nam) approach are employed to predict the fatigue life. The maximum shear strain plane, the maximum normal strain plane, and the maximum damage plane are considered as the critical plane, respectively. The effects of the choice of the critical plane on previous approaches are discussed. It is shown that comparing with the maximum shear/normal strain approach, the predictions are improved by using the maximum damage plane approach, part nonproportional paths for SWT, AV and part nonproportional paths for KBM, TV paths for FS. But for LKN, the prediction results are nonconservative for some paths than that of the maximum shear/normal strain approach.

scholarly journals Multiaxial fatigue assessment of friction stir welded tubular joints of Al 6082-T6

2017 ◽  
Vol 101 ◽  
pp. 282-296 ◽  
Author(s):  
L. Susmel ◽  
D.G. Hattingh ◽  
M.N. James ◽  
R. Tovo
Keyword(s):  
Multiaxial Fatigue ◽  
Fatigue Assessment ◽  
Friction Stir ◽  
Tubular Joints
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