Results 131 to 140 of about 1,661,808 (287)

Powder movement rules of laser powder bed fusion additive manufacturing aluminum alloy based on discrete element method

Advances in Mechanical Engineering
Laser Powder Bed Fusion (LPBF) is a promising metal additive manufacturing technology based on layer by layer powder spreading, and powder bed uniformity has a great influence on the forming quality.
Pan Lu, Zhang Chen-lin, Liu Tong, Wang Liang, Zhang Heng-hua   +4 more
doaj   +1 more source

Revealing the Mechanisms of Smoke during Electron Beam–Powder Bed Fusion by High-Speed Synchrotron Radiography

Journal of Manufacturing and Materials Processing
Electron beam–powder bed fusion (PBF-EB) is an additive manufacturing process that utilizes an electron beam as the heat source to enable material fusion. However, the use of a charge-carrying heat source can sometimes result in sudden powder explosions,
Jihui Ye, Nick Semjatov, Pidassa Bidola, Greta Lindwall, Carolin Körner   +4 more
doaj   +1 more source

On determining the in situ powder bed density in laser powder bed fusion: Research data

Source data for the measurement of the powder bed density in laser powder fusion.
Wenda, Alexander
core   +1 more source

Changes in Powder Surface Chemistry During Reuse of 316L in Powder Bed Fusion - Laser Beam

Powder degradation during additive manufacturing poses a significant challenge for achieving optimal part quality as well as maximal powder feedstock utilization and hence economy and sustainability of the process.
Hryha, Eduard,, Lindsay, Leach,, Kazi, Sofia,   +2 more
core   +1 more source

Catalytic Pyrolysis of Waste Polystyrene Over Fe–B Composite Catalyst for Enhanced Liquid Fuel Production

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Healthcare derived polystyrene waste represents a growing and under addressed fraction of plastic waste streams due to contamination risks and limited recyclability. This study aims to investigate the valorization of waste polystyrene foam through catalytic and noncatalytic pyrolysis pathways to evaluate product yield distribution and identify
Salman Khan, Zahid Hussain, Bilal Ahmad, Naveed Ahmad, Shohreh Azizi   +4 more
wiley   +1 more source

Powder particle movement during Powder Bed Fusion

Procedia Manufacturing, 2019
Abstract Powder Bed Fusion is a widely used technique to produce complex parts with different materials. In principle, a pre-placed powder layer is locally melted by a laser beam and thereby fused to the previous tracks and layers. This technique offers high flexibility at fast processing speeds.
openaire   +1 more source

Exploring Influence of MgO/Na2O on Melting Characteristics and Viscosity–Temperature Characteristics of Coal Slags Under Entrained Flow Gasification Condition

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Characteristics of high alkali in Zhundong coal ash may cause ash‐related slag discharge problems at entrained‐flow‐bed (EFB) gasifier. In this study, through exploring melting characteristics and viscosity–temperature characteristics, it is found that MN05, MN14, and MN23 show low FTs (< 1160°C).
Meng Li, Jianliang Xu, Xueli Chen, Hao Wu   +3 more
wiley   +1 more source

Investigation of 316L microstructure evolution mechanism and mechanical properties in dual-laser powder bed fusion with controllable remelting time interval

Materials & Design
Remelting has a significant effect on controlling microstructure and enhancing properties of components prepared by laser powder bed fusion. In order to reveal the mechanism of the effect of remelting time intervals, this study employed a dual-laser ...
Zibin Liu, Yongqiang Yang, Yunmian Xiao, Haoyang Lei, Chao Yang, Zixin Liu, Qinglong Zhao, Changhui Song   +7 more
doaj   +1 more source

Beyond Conventional Cost–Benefit Analysis to Integrated Sustainability Assessment in Additive Manufacturing

Business Strategy and the Environment, EarlyView.
ABSTRACT Additive manufacturing (AM) adoption provides numerous benefits, including decentralised production, design flexibility, mass customisation, reduced material waste and lightweight designs. However, AM investment decisions are complex and challenging for manufacturers, and limited knowledge exists about the holistic assessment of relevant costs
Dilupa Nakandala, Premaratne Samaranayake, Muhammad Salman Asif, Richard Yang, Pauline Ross, Abdul Babar   +5 more
wiley   +1 more source

Interface‐Engineered Li–Ni–O/Ni Heterostructures With Tunable Vacancies on Biochar Enable Biomass‐to‐Hydrogen Conversion

Carbon Energy, EarlyView.
This study shows that lithium induces Li–Ni–O/Ni heterostructures on biochar, creating oxygen vacancies and optimal acid–base environments that enhance steam activation and suppress carbon deposition. These interfacial effects and synergistic modulation lead to high hydrogen yields at moderate temperatures, providing a scalable catalyst design strategy
Jiali Guo, Jit Loong Cyrus Foo, Guicai Liu, Liya Ge, Andrei Veksha, Wei Ping Chan, Dean Song, Grzegorz Lisak   +7 more
wiley   +1 more source