Shengchuan Wu
Southwest Jiaotong University
Ultimate tensile strengthAxleFatigue limitFinite element methodComposite materialGalerkin methodMetallurgyMaterials scienceWeldingAlloyApplied mathematicsMathematicsSmoothingComputer scienceFracture mechanicsStructural engineeringParis' lawCrack closureMicrostructureStress (mechanics)
88Publications
22H-index
1,413Citations
Publications 79
Newest
#1Jianguang Bao (Beihang University)H-Index: 1
#2Zhengkai Wu (Southwest Jiaotong University)H-Index: 5
Last. Wei Sun (University of Nottingham)H-Index: 31
view all 8 authors...
Abstract null null This paper presents the results of high temperature strain-range controlled low cycle fatigue tests of a laser powder bead fused AlSi10Mg alloy. Following stress relief (2hrs at 300 ℃), two cyclic loading waveforms (standard triangular and dwell-type trapezoidal waveforms) and three temperatures (100 ℃, 250 ℃ and 400 ℃) were applied to investigate both the mechanical response and the related microstructural changes of this additively manufactured (AM) aluminium alloy. The bulk...
Source
#1Z.K. Wu (Southwest Jiaotong University)H-Index: 1
#1Zhengkai Wu (Southwest Jiaotong University)H-Index: 5
Last. Philip J. Withers (University of Manchester)H-Index: 88
view all 7 authors...
Abstract Metallurgical defects are critical to influence the anisotropic fatigue resistance of additively manufactured metals under cyclic loading. For selective laser melted AlSi10Mg alloy, X-ray computed tomography was firstly adopted to detect the spatial features of defects, and high cycle fatigue (HCF) properties and fatigue crack growth were performed on specimens in both parallel and perpendicular to build direction. It is found that the horizontal specimens exhibit a higher fatigue stren...
2 CitationsSource
#1Yanan Hu (Southwest Jiaotong University)H-Index: 8
#2Ni Ao (Southwest Jiaotong University)
Last. Guilan Wang (HUST: Huazhong University of Science and Technology)H-Index: 13
view all 9 authors...
Abstract null null Hybrid in situ rolled wire + arc additive manufacturing (HRAM) is a novel printing technology capable of fabricating large-scale components by combining in situ micro-rolling with standard wire + arc additive manufacturing (WAAM), which enhances the ductility and tensile strength of the resulting parts. This study attempts to identify the aspects of the microstructure that are critical to the property improvement. The microstructure of the WAAM- and HRAM-processed Ti6Al4V allo...
Source
#1Yanan Hu (Southwest Jiaotong University)H-Index: 8
#2Shengchuan Wu (Southwest Jiaotong University)H-Index: 22
Last. Philip J. Withers (University of Manchester)H-Index: 88
view all 6 authors...
Abstract null null A fine (~3–10 μm) equiaxed zone (FQZ) between the heat affected zone and the weld metal is a unique microstructural feature associated with fusion welded Zr-containing aluminum alloys, posing a significant threat to the structural integrity of welded components. This work examines the softening and failure behavior of a 7050-T7451 hybrid laser welded joint. Nanoindentation test results show the FQZ to have the lowest hardness across the welded joint, which is attributed primar...
Source
#1Xin Zhao (Southwest Jiaotong University)
#1Xin Zhao (Southwest Jiaotong University)
Last. Wei Sun (University of Nottingham)H-Index: 31
view all 6 authors...
Abstract Modern railway axles are prone to external impacts under in-service, leading to fatigue crack initiation and failure accidents. In this work, the impacting responses of railway axles induced by foreign object damage (FOD) were investigated by using finite element modelling with the Johnson-Cook (J-C) constitutive law and failure model. J-C material model parameters of railway axle EA4T alloy steel were determined by the quasi-static compression test, Split-Hopkinson pressure bar test an...
Source
#1Ziyi Wang (Southwest Jiaotong University)H-Index: 1
#2Shengchuan Wu (Southwest Jiaotong University)H-Index: 22
Last. Philip J. Withers (University of Manchester)H-Index: 88
view all 7 authors...
Abstract This paper elucidates the relationship between the primary deformation processes and associated damage mechanisms operating in an extruded AZ31 Mg alloy under uniaxial low-cycle fatigue with an occurrence of ratchetting. Different mean stresses and stress amplitudes were prescribed to study twinning/detwinning-dominated (TDD), twinning/detwinning and slip-dominated (TDSD), and slip-dominated (SD) cyclic deformations, respectively. In each case, the damage was examined by synchrotron rad...
3 CitationsSource
#1Yanan Hu (Southwest Jiaotong University)H-Index: 8
#1Y.N. Hu (Southwest Jiaotong University)H-Index: 6
Last. Jie Zhang
view all 5 authors...
Source
#1Feng Guo (Southwest Jiaotong University)
#2Shengchuan Wu (Southwest Jiaotong University)H-Index: 22
Last. Sansan DingH-Index: 1
view all 6 authors...
Abstract Maglev trains with an operation speed higher than 600 km/h show a great advantage during the next generation ground transportation. To tackle the structural integrity of maglev bogies made of forged 6082-T6 aluminum alloys, a time-domain stepwise fatigue assessment (TSFA) approach was proposed to consider complex dynamic fatigue loads. Firstly, a vehicle-bridge coupled maglev vehicle dynamic model was established to obtain the time history of service-simulation fatigue loads. Secondly, ...
8 CitationsSource
#1Cheng Xie (Southwest Jiaotong University)H-Index: 1
#2Shengchuan Wu (Southwest Jiaotong University)H-Index: 22
Last. Guilan Wang (HUST: Huazhong University of Science and Technology)H-Index: 13
view all 7 authors...
Abstract Hybrid in situ rolled wire + arc additive manufacturing (HRAM) is a potential 3D printing method that combines traditional wire and arc additive manufacturing (WAAM) with in situ micro-rolling. Here, the manufacturing defects and mechanical and fatigue strength were explored for an HRAM- and WAAM-processed Al-Mg4.5 Mn alloy. The results show that advanced HRAM can result in significant grain refinement and enhance the material failure resistance compared with standard WAAM. High-resolut...
7 CitationsSource
#1Yanan Hu (Southwest Jiaotong University)H-Index: 8
#2Shengchuan Wu (Southwest Jiaotong University)H-Index: 22
Last. Pavel Hutař (CAS: Academy of Sciences of the Czech Republic)H-Index: 17
view all 9 authors...
Abstract The effects of environment (in air and 3.5 wt. % NaCl solution) and artificially-induced surface scratches are investigated on the fatigue properties of railway EA4T (also called 25CrMo4) alloy steel. This steel is found to be markedly sensitive to the chloride-containing environment, with cracking at stresses two thirds of the in-air fatigue limit (+/-326 MPa) under rotating bending (Wohler) tests. The scratched specimens show even shorter lifetime at stresses below 300 MPa and no fati...
32 CitationsSource