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Advanced Engineering Design

About: The article was published on 2012-01-01. It has received 48 citations till now. The article focuses on the topics: Electrical engineering technology & System of systems engineering.
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Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper investigated the wear performance of selective laser melting (SLM) materials under various contact conditions, including dry, boundary lubrication, cavitation erosion, and corrosion conditions.
Abstract: Selective laser melting (SLM) is one type of additive manufacturing which produces metal parts by powder bed fusion. Since the materials undergo repeated and sharp heating/cooling cycles, the SLMed parts have unique microstructures. The relations among SLM processing parameters, resultant microstructures, and mechanical properties have been investigated by many researchers. However, the wear performance of SLMed materials under various contact conditions has not been carried out until recently. This paper is a presentation of previous and recent research related to wear performance. This is a crucial aspect if SLM is to be expanded to produce friction pairs. Wear rates and mechanisms of the SLMed materials under dry, boundary lubrication, cavitation erosion, and corrosion conditions are discussed and compared with conventionally processed (CP) materials. SLMed materials benefit from fine grains and high hardness, which have higher wear resistance than CP materials. Moreover, a unique tribo-layer on the surface of the SLMed part is found to protect the bulk material under boundary lubrication conditions. An optimized combination of processing parameters increases part density, which further improves the wear resistance. Future work includes studying the influence of pores on the deforming and lubricating behaviors from dry conditions to different lubrication regimes. The final target is to actively control the processing parameters to obtain desirable material properties for improving wear performance.

35 citations

Journal ArticleDOI
TL;DR: In this paper, the extent to which pores affect the tribological performance under lubricated conditions has not been studied, however, they have been used to evaluate the influence of pores on lubrication.

22 citations

Journal ArticleDOI
Yi Zhu1
01 Mar 2018
TL;DR: In contrast to other third-body layers, such as water, oil, sand, and leaves, iron oxides exert a constant influence on the friction and wear of wheel-rail contact as discussed by the authors.
Abstract: In contrast to other third-body layers – such as water, oil, sand, and leaves – iron oxides exert a constant influence on the friction and wear of wheel–rail contact. However, studies that focus on...

21 citations


Cites background from "Advanced Engineering Design"

  • ...FeO may be created in an oxygen-deficient environment whereas Fe2O3 develops when the air contains sufficient oxygen, and the resulting oxide layer is brittle and abrasive.(22) Because Fe2O3 tends to increase friction and wear, lubricants with low oxygen content may be applied to prevent the formation of Fe2O3....

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  • ...There are many tribologists who have investigated iron oxides under controlled conditions.(22,50) However, the conditions of a wheel–rail contact are complicated because the contact system is an open system, which is exposed to dirt, particles, and natural lubrication....

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Book ChapterDOI
01 Jan 2017
TL;DR: In this article, the authors present a comprehensive optimized inverse analysis protocol that has been formulated at the complex multifunctional, multiphysics and multidisciplinary total system of systems level leading to trans-disciplinary convergence for the entire designer vehicle with provisions for optimized/tailored aerodynamics, stability, control, materials, structures, propulsion, performance, sizing, weight, cost, etc.
Abstract: This chapter [Portions of the analysis and results of this continuing research project were presented at the Fourth International Conference on Inverse Problems, Design and Optimization (IPDO–2013), Albi, France (Hilton and D’Urso, Paper ID 06290, 2013).] reports on a comprehensive optimized inverse analysis protocol that has been formulated at the complex multifunctional, multiphysics and multidisciplinary total system of systems (SoS) level leading to trans-disciplinary convergence for the entire designer vehicle with provisions for optimized/tailored aerodynamics, stability, control, materials, structures, propulsion, performance, sizing, weight, cost, etc. The protocol for these inverse problems is based on a generalized calculus of variations approach, including but not limited to Lagrange multipliers.

16 citations