Results 91 to 100 of about 921,833 (368)

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

Optimization of Drilling Parameters in Natural Fibers Composite Plates Based on Grey Relational Analysis

Journal of Natural Fibers
This study focuses on optimizing drilling parameters to minimize delamination, circularity error, and cylindricity in natural fiber composites through a comprehensive full factorial Design of Experiments (DoE) combined with Grey Relational Analysis (GRA).
Mustapha Arslane, Mohamed Slamani, Abdelmalek Elhadi, Salah Amroune, Ahmed Belaadi, Ibrahim M.H. Alshaikh, Djamel Ghernaout   +6 more
doaj   +1 more source

Rotary ultrasonic drilling of Ti6Al4V: Effects of machining parameters and tool diameter

Advances in Mechanical Engineering, 2018
This article presents the use of the rotary ultrasonic machining process for drilling holes in Ti6Al4V alloy which is regarded as a difficult-to-cut material due to its high-temperature strength and low thermal conductivity.
Saqib Anwar, Mustafa M Nasr, Abdulrahman Al-Ahmari, Mohammed Alkahtani, Basem Abdo, Abdulaziz El-Tamimi, Saied Darwish   +6 more
doaj   +1 more source

Prognosis and Multiobjective Optimization of the Sampling Plan for Cylindricity Evaluation

Mathematical Problems in Engineering, 2020
The actualization of the befitting sampling strategy and the application of an appropriate evaluation algorithm have been elementary issues in the coordinate metrology. The decisions regarding their choice for a given geometrical feature customarily rely
S. H. Mian, U. Umer, Osama Abdulhameed, H. Alkhalefah   +3 more
semanticscholar   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Influence of HSS drill coatings on surface finish and cylindricity of AA6061/C/ZrO2 composite in CNC drilling operations under dry conditions

Materials Research Express
This study aims to evaluate the effect of HSS drill tool coatings, namely single-layer TiN, single-layer AlCrN, and double-layer AlTiN + TiSiXN (Durana), on the surface roughness and cylindricity of AA6061 (90 wt%)/C (5 wt%)/ZrO _2 (5 wt%) hybrid ...
Haja Syeddu Masooth P, Jayakumar V, Bharathiraja G, Keno Teshome Mekonnin   +3 more
doaj   +1 more source

A comparison between simulation and experiment of virtual machining in CNC turning machine considering kinematic motion deviations, tool wear and workpiece deflection errors

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
The virtual machining is one of the most important techniques to estimate the complex various machining parameters of machined parts before operating the real machining, in order to obtain the accuracy, precision and reliability.
Wiroj THASANA, Srisit CHIANRABUTRA
doaj   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Geometrical and Dimensional Deviations of Fused Deposition Modelling (FDM) Additive-Manufactured Parts

Metrology
This research investigates the influence of printing parameters and different materials on the geometrical and dimensional deviations of Fused Deposition Modelling (FDM) additive manufacturing.
Radu Emanuil Petruse, Carmen Simion, Ioan Bondrea   +2 more
doaj   +1 more source

Cylindric multipartitions and level-rank duality

, 2018
We show that a multipartition is cylindric if and only if its level rank-dual is a source in the corresponding affine type $A$ crystal. This provides an algebraic interpretation of cylindricity, and completes a similar result for FLOTW multipartitions ...
Gerber, Thomas
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