Results 51 to 60 of about 66,021 (260)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

MODELLING OF PERPENDICULARITY OF CUT IN HIGH POWER CO2 LASER CUTTING OF 5 MM THICK ALUMINIUM ALLOY

Nonconventional Technologies Review, 2016
Beside productivity and costs, the cut quality is the third most important criteria in laser cutting. An important quality indicator of laser cutting is perpendicularity of cut. In this paper, the effects of the laser power, cutting speed and assist gas
Milos Madic, Miroslav Radovanovic, Predrag Jankovic, Srdan Mladenovic   +3 more
doaj  

Identification of the robust conditions for minimization of the HAZ and burr in CO2 laser cutting [PDF]

FME Transactions, 2013
This paper presents Taguchi optimization methodology for identification of the robust conditions for minimization of the heat affected zone (HAZ) and burr height in CO2 laser cutting of AISI 304 stainless steel.
Madić Miloš J., Radovanović Miroslav R.   +1 more
doaj  

Optimizing parameters for fiber laser cutting stainless steel 201 to improve kerf width quality [PDF]

Engineering and Technology Journal
This study investigates the laser cutting of stainless steel 201 using the Response Surface Methodology with a 32-run experimental design (L32). The responses are top and bottom kerf width, while laser power, cutting speed, frequency, focal position, and
Anwar Zabon, Tahseen Abbas, Aqeel Bedan
doaj   +1 more source

Low‐Temperature Imidization of Polyimides (PI) for Scalable Manufacturing of Flexible Wearable Electronics

Advanced Engineering Materials, EarlyView.
Low‐temperature imidization of PEG‐modified polyimide enables fully screen‐printed, roll‐to‐roll fabrication of flexible electrodes on PET substrates, delivering robust mechanical durability and reliable ECG/EMG signal performance for wearable electronics.
Akib Abdullah Khan, Jong‐Hoon Kim
wiley   +1 more source

Thick Glass High-Quality Cutting by Ultrafast Laser Bessel Beam Perforation-Assisted Separation

Micromachines
The cutting of thick glass is extensively employed in aerospace, optical, and other fields. Although ultrafast laser Bessel beams are heavily used for glass cutting, the cutting thickness and cutting quality need to be further improved. In this research,
Suwan Chen, Yuxuan Luo, Xinhu Fan, Congyi Wu, Guojun Zhang, Yu Huang, Youmin Rong, Long Chen   +7 more
doaj   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Phenomenological Modeling of Material Removal Mechanisms in High-Power Gas-Laser Cutting of Steels

Журнал інженерних наук
The problem of increasing the productivity and quality of gas-assisted laser cutting of thick steel plates has become particularly relevant as modern laser systems gain greater power and expand their industrial applications. Despite numerous studies, the
Maksym Romanenko, Oleksii Kagliak, Victor Romanenko, Aitzol Lamikiz, Dmytro Lesyk   +4 more
doaj   +1 more source

Laser Cutting of Kevlar Laminates, [PDF]

, 1977
An investigation has been conducted of the use of laser energy for cutting contours, diameters, and holes in flat and shaped Kevlar 49 fiber-reinforced epoxy laminates as an alternate to conventional machining. The investigation has shown that flat laminates 6.35 mm thick may be cut without backup by using a high-powered (1000-watt) continuous wave CO ...
openaire   +2 more sources