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Advances in polishing of internal structures on parts made by laser-based powder bed fusion

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0724-0

Abstract: Considering the manufacturing of inner structures, laser-based powder bed fusion (L-PBF) is an attractive

Keywords： laser-based powder bed fusion     polishing     internal structures     surface quality     surface features     post    

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Orientation effect of electropolishing characteristics of 316L stainless steel fabricated by laser powderbed fusion

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 580-592 doi: 10.1007/s11465-021-0633-7

Abstract: effect of electropolishing characteristics on different surfaces of 316L stainless steel fabricated by laserpowder bed fusion (L-PBF), considering that the rough surface of 3D printed parts is a key factor limitingelectropolishing characteristics on the different surfaces corresponding to the building orientation in selective laser

Keywords： electropolishing     laser powder bed fusion     316L stainless steel     corrosion resistance     microstructure    

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alloying of CoCrFeMnNi high-entropy alloy from elemental feedstock toward high-throughput synthesis via laserpowder bed fusion

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0727-x

Abstract: Existing in situ synthesis methods based on additive manufacturing are insufficient for efficientlyIn this work, laser powder bed fusion (L-PBF) is adopted for the in situ synthesis of equiatomicCoCrFeMnNi HEA from elemental powder mixtures.The L-PBF-based process parameters are optimized; and two different methods, namely, a multi-melting

Keywords： laser powder bed fusion (L-PBF)     in situ alloying     high-entropy alloys     heat treatment     rapid    

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Development of lunar regolith composite and structure via laser-assisted sintering

Frontiers of Mechanical Engineering doi: 10.1007/s11465-021-0662-2

Abstract: In this paper, a laser-assisted additive manufacturing process is developed to fabricate lunar regolithcomposites reaches 9.248 MPa, and the maximum depth of surface variation is 120.79 μm, which indicates poor powderfusion and sintering quality.Thereafter, the mechanical properties of laser-sintered lunar regolith composites are implemented toThe effectiveness and the feasibility of this laser-assisted process are potentially developed for future

Keywords： in situ manufacturing     laser-assisted powder fusion process     mechanical properties     topological    

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Formation Process and Mechanical Deformation Behavior of a Novel Laser-Printed Compression-Induced Twisting-Compliant Article

Jie Gao, Dongdong Gu, Chenglong Ma, Donghua Dai, Lixia Xi, Kaijie Lin, Tong Gao, Jihong Zhu, Yuexin Du

Engineering 2022, Volume 15, Issue 8,   Pages 133-142 doi: 10.1016/j.eng.2021.03.032

Abstract:

A novel compression-induced twisting (CIT)-compliant mechanism was designed based on the freedom andconstraint topology (FACT) method and manufactured by means of laser powder bed fusion (LPBF).Within the range of optimized laser powers from 375 to 450 W and with the densification level of theIncreased laser power led to the elimination of residual metallurgical pores within the inclined strutsThe accumulated compressive strain of the optimally printed CIT mechanism using a laser power of 450

Keywords： Laser 3D printing     Laser powder bed fusion     Compression-induced twisting-compliant mechanism     Compression–torsion    

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Review of materials used in laser-aided additive manufacturing processes to produce metallic products

Xiaodong NIU, Surinder SINGH, Akhil GARG, Harpreet SINGH, Biranchi PANDA, Xiongbin PENG, Qiujuan ZHANG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 282-298 doi: 10.1007/s11465-019-0526-1

Abstract: However, such technologies, with the exception of selective laser melting and sintering, are not usedThese technologies utilize materials, such as Ni-, Al-, and Ti-based alloys and stainless steel powdersThe present work reviews the type of materials used in laser-based AM processes for the manufacture of

Keywords： direct metal deposition     laser-based manufacturing     rapid manufacturing     selective laser melting     additive    

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Development of Micro Selective Laser Melting: The State of the Art and Future Perspectives Review

Balasubramanian Nagarajan, Zhiheng Hu, Xu Song, Wei Zhai, Jun Wei

Engineering 2019, Volume 5, Issue 4,   Pages 702-720 doi: 10.1016/j.eng.2019.07.002

Abstract: Selective laser melting (SLM) is a common AM technique that is based on powder-bed fusion (PBF) to processresearch works and commercial systems for the fabrication of microscale parts using SLM and selective laser, laser optics, and powder particle size, this paper details potential future directions.A detailed review of existing recoating methods in powder-bed techniques is conducted, along with a descriptionof emerging efforts to implement dry powder dispensing methods in the AM domain.

Keywords： Additive manufacturing     Selective laser melting     Microfabrication     Hybrid processing     Powder-bed recoating    

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Two-dimensional modeling of sintering of a powder layer on top of nonporous substrate

Tiebing CHEN, Yuwen ZHANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 143-148 doi: 10.1007/s11465-010-0006-0

Abstract: Selective laser sintering (SLS) of a two-component metal powder layer on the top of multiple sinteredlayers by a moving Gaussian laser beam is modeled.The loose metal powder layer is composed of a powder mixture with significantly different melting pointsThe effects of the porosity and the thickness of the atop loose powder layer with different numbers ofthe existing sintered metal powder layers below on the sintering process are numerically investigated

Keywords： laser     sintering     melting     solidification     heat transfer    

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A Smart Procedure for the Femtosecond Laser-Based Fabrication of a Polymeric Lab-on-a-Chip for Capturing Article

Annalisa Volpe, Udith Krishnan, Maria Serena Chiriacò, Elisabetta Primiceri, Antonio Ancona, Francesco Ferrara

Engineering 2021, Volume 7, Issue 10,   Pages 1436-1442 doi: 10.1016/j.eng.2020.10.012

Abstract: The entire platform was realized in polymethyl methacrylate (PMMA), combining femtosecond (fs) laser

Keywords： Lab-on-a-chip     Fs laser     Circulating tumor cells     Point of care     Thermal bonding     Polymers    

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Gradient-based compressive image fusion

Yang CHEN,Zheng QIN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 227-237 doi: 10.1631/FITEE.1400217

Abstract: We present a novel image fusion scheme based on gradient and scrambled block Hadamard ensemble (SBHE)By compositing the gradient of each image, gradient-based weights are obtained, with which compressivequality in line with different fusion schemes.Simulation results demonstrate that the gradient-based scheme has the best performance, in terms of bothFurthermore, the gradient-based fusion scheme proposed in this paper can be applied in different fusion

Keywords： Compressive sensing (CS)     Image fusion     Gradient-based image fusion     CS-based image fusion    

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Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite

Omotoyosi H. FAMODIMU, Mark STANFORD, Chike F. ODUOZA, Lijuan ZHANG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 4,   Pages 520-527 doi: 10.1007/s11465-018-0521-y

Abstract:

Laser melting of aluminium alloy—AlSi10Mg has increasingly been used to create specialised productsin various industrial applications, however, research on utilising laser melting of aluminium matrixThis has been attributed to the complexity of the laser melting process, metal/ceramic feedstock forthe process and the reaction of the feedstock material to the laser.The effects of several parameters of the laser melting process on the mechanical blended composite were

Keywords： selective laser melting     additive manufacturing     mechanical alloying     powder metallurgy     aluminium metal    

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Aging properties and aging mechanism of activated waste rubber powder modified asphalt binder based on

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 625-636 doi: 10.1007/s11709-023-0938-1

Abstract: This study is performed to develop a novel pavement material using waste rubber powder, waste lubricatingSubsequently, the aging properties and aging mechanism of activated waste rubber powder modified asphalt(ARMA) are investigated based on its rheological properties and micro-characterization.The rheological results show that, compared with waste rubber powder modified asphalt (RMA), ARMA offersmicro-characterization result shows that the aging of ARMA may be caused by the fact that LBP-activated waste rubber powder

Keywords： rubber powder modified asphalt     aging     mechanism     rheological     characterization    

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Prediction of the Thermal History and Solidification Microstructure of Inconel 718 Products Made by LaserPowder-Bed Fusion

Patcharapit Promoppatum, Shi-Chune Yao, P. Chris Pistorius, Anthony D. Rollett

Engineering 2017, Volume 3, Issue 5,   Pages 685-694 doi: 10.1016/J.ENG.2017.05.023

Abstract: model and the Rosenthal equation are used to study the thermal and microstructural phenomena in the laserpowder-bed fusion of Inconel 718.Moreover, a sensitivity analysis based on choices of the absorptivity is performed, which shows that

Keywords： Additive manufacturing     Finite-element modeling     Rosenthal equation     Microstructure     Thermal behavior     Inconel 718    

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Manufacturing cost constrained topology optimization for additive manufacturing

Jikai LIU, Qian CHEN, Xuan LIANG, Albert C. TO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 213-221 doi: 10.1007/s11465-019-0536-z

Abstract: This paper presents a manufacturing cost constrained topology optimization algorithm considering the laserpowder bed additive manufacturing process.Technically, the additive manufacturing cost model for laser powder bed-based process is establishedThen, this cost model is transformed into a level set function-based expression, which is integrated

Keywords： topology optimization     manufacturing cost     additive manufacturing     powder bed    

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Title Author Date Type Operation

Advances in polishing of internal structures on parts made by laser-based powder bed fusion

Journal Article

Orientation effect of electropolishing characteristics of 316L stainless steel fabricated by laser powderbed fusion

Journal Article

alloying of CoCrFeMnNi high-entropy alloy from elemental feedstock toward high-throughput synthesis via laserpowder bed fusion

Journal Article

Development of lunar regolith composite and structure via laser-assisted sintering

Journal Article

Formation Process and Mechanical Deformation Behavior of a Novel Laser-Printed Compression-Induced Twisting-Compliant

Jie Gao, Dongdong Gu, Chenglong Ma, Donghua Dai, Lixia Xi, Kaijie Lin, Tong Gao, Jihong Zhu, Yuexin Du

Journal Article

Review of materials used in laser-aided additive manufacturing processes to produce metallic products

Xiaodong NIU, Surinder SINGH, Akhil GARG, Harpreet SINGH, Biranchi PANDA, Xiongbin PENG, Qiujuan ZHANG

Journal Article

Development of Micro Selective Laser Melting: The State of the Art and Future Perspectives

Balasubramanian Nagarajan, Zhiheng Hu, Xu Song, Wei Zhai, Jun Wei

Journal Article

Masoud Mahjouri-Samani: Laser-based synthesis and Processing of 2D Quantum Materials（2019.10.10）

23 Apr 2021

Conference Videos

Two-dimensional modeling of sintering of a powder layer on top of nonporous substrate

Tiebing CHEN, Yuwen ZHANG,

Journal Article

A Smart Procedure for the Femtosecond Laser-Based Fabrication of a Polymeric Lab-on-a-Chip for Capturing

Annalisa Volpe, Udith Krishnan, Maria Serena Chiriacò, Elisabetta Primiceri, Antonio Ancona, Francesco Ferrara

Journal Article

Gradient-based compressive image fusion

Yang CHEN,Zheng QIN

Journal Article

Effect of process parameters on the density and porosity of laser melted AlSi10Mg/SiC metal matrix composite

Omotoyosi H. FAMODIMU, Mark STANFORD, Chike F. ODUOZA, Lijuan ZHANG

Journal Article

Aging properties and aging mechanism of activated waste rubber powder modified asphalt binder based on

Journal Article

Prediction of the Thermal History and Solidification Microstructure of Inconel 718 Products Made by LaserPowder-Bed Fusion

Patcharapit Promoppatum, Shi-Chune Yao, P. Chris Pistorius, Anthony D. Rollett

Journal Article

Manufacturing cost constrained topology optimization for additive manufacturing

Jikai LIU, Qian CHEN, Xuan LIANG, Albert C. TO

Journal Article