Multi-Objective Optimization for Alumina Laser Sintering Process

Fayed, Eslam M.; Elmesalamy, A. S.; Sobih, M.; El-Shaer, Yasser

doi:10.1007/s40516-016-0029-4

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…The stated records for surface roughness of nickel alloys have revealed that they have a good surface roughness within 10 µm, and details are also described in Table 4 [46,114]. The details of surface roughness of titanium alloys, aluminum alloys, other polymers, metals, composites, and ceramics are also stated in Table 4 [100,[115][116][117][118].…”

Section: Surface Quality and Dimensional Accuracymentioning

confidence: 99%

“…The optimized results showed that SLA was more achievable to fulfill the geometrical requirements of AM-produced parts [229]. A MO optimization on ceramic alumina was investigated by Fayed et al [117] for the SLS process and established a statistical model to examine the influence of controlling parameters of laser power and scan speed on the quality of surface roughness, layer thickness and vector/line width, and density. Arısoy et al [230] performed experimental investigations on Inconel 625 by SLM process., and various optimization techniques are analyzed to enhance productivity by controlling the process influence on the resultant microstructure.…”

Section: Multi-objective Optimization For Ammentioning

confidence: 99%

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A state-of-the-art review on energy consumption and quality characteristics in metal additive manufacturing processes

Majeed

Ahmed

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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This paper aims to study the energy consumption and quality characteristics of the parts fabricated by additive manufacturing (AM) technologies with a special focus on metal AM processes. AM is a family of manufacturing techniques, which is broadly used to fabricate complex and lightweight structures. The energy savings during AM processes have a significant influence on the AM industry, only if the quality of the fabricated part meets the requirements. The quality is generally represented by the surface and dimensional quality, mechanical properties, relative density, hardness, etc. The energy saving is important for environmentally benign and cleaner production, and improved product quality is useful for its application as a functional part in the aerospace, automobile, and biomedical industries. A comprehensive review of the energy consumption and quality characteristics of AM-fabricated (with special focus on metal AM) parts was carried out. Firstly, the specific energy consumption of various AM techniques has been reviewed to address the importance of energy and cleaner production. Then, the qualifications of products fabricated by different metal AM techniques have been discussed for different materials, such as titanium alloys, steel alloys, nickel alloys, and aluminum alloys. Also, by considering the practical importance of thin-walled structures fabricated by AM, a detailed analysis of their qualification has been presented. Moreover, different optimization techniques have also been reviewed for various AM process parameters and objectives. Overall, this paper provides an overview of AM, including a survey on the energy consumption and quality characteristics with the development of AM technologies for manufacturing of quality products. Finally, several future research directions are suggested, specifically the need for a framework for metal AM processes for the fabrication of quality products with minimum energy consumption.

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Section: Surface Quality and Dimensional Accuracymentioning

confidence: 99%

Section: Multi-objective Optimization For Ammentioning

confidence: 99%

A state-of-the-art review on energy consumption and quality characteristics in metal additive manufacturing processes

Majeed

Ahmed

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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“…The experimental methodology has been described and the results that arise from the experiment have been assessed and discussed. The work results were extended to establish a statistical model which control and optimize the laser sintering parameters according to our published work [9].…”

Section: /11mentioning

confidence: 99%

Influence of Laser Process Parameters on Properties of Alumina Parts Produced By SLS

Fayed¹,

Elmesalamy²,

Sobih

et al. 2017

International Conference on Aerospace Sciences and Aviation Tec

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Direct selective laser sintering (SLS) is an additive manufacturing technique for the fabrication of near net shaped parts directly from computer-aided design data by sintering together different layers with the help of a laser source. This paper presents an investigation of the physical properties (density and porosity) of alumina (Al 2 O 3) samples produced by SLS. Some input parameters, namely laser power and scan speed were selected for the investigation. The aim of this work is to understand the effect of these sintering parameters on the quality of the sintered layer (surface roughness), physical properties (density and porosity) and microstructure (grain size) are investigated. The results showed that maximum density of the sintered ceramics layers are of 3.54 gm/cm3 and minimum porosity of 4.34% were obtained at laser power 230 W and laser scanning speed 150 mm/min. The morphology was analyzed by means of field emission scanning electron microscope. Laser power and Scan speed were found to have a great influence on the surface roughness and morphology.

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