Results 91 to 100 of about 37,742 (304)

Effect of Ordering Policies on Complex Dynamics Behaviours in a Discrete-Type Manufacturing Industry Supply Chain System

open access: yesChinese Journal of Mechanical Engineering, 2018
The beer game model is a typical paradigm used to study complex dynamics behaviours in production–distribution systems. The model, however, does not accord with current practical supply chain system models in discrete-type manufacturing industry, which ...
Wen Wang, Wei-Ping Fu
doaj   +1 more source

Design and discrete event simulation of power and free handling systems [PDF]

open access: yes, 1997
Effective manufacturing systems design and implementation has become increasingly critical, with the reduction in manufacturing product lead times, and the subsequent influence on engineering projects.
Lynn, Jeffrey Alexander
core  

UML and Petri Nets for Design and Analysis of Distributed Systems [PDF]

open access: yes, 2000
This paper presents a modification to UML to improve the modelling and analysis of discrete-event dynamic system (DEDS) representations of manufacturing systems.
Giacomini, Luisa   +2 more
core   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca   +9 more
wiley   +1 more source

Do African Manufacturing Firms Learn from Exporting? [PDF]

open access: yes
In this paper, we use firm-level panel data for the manufacturing sector in four African countries to estimate the effect of exporting on efficiency. Estimating simultaneously a production function and an export regression that control for unobserved ...
Arne Bigsten   +11 more
core   +2 more sources

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle   +3 more
wiley   +1 more source

Reusable modelling and simulation of flexible manufacturing for next generation semiconductor manufacturing facilities [PDF]

open access: yes, 2003
Automated material handling systems (AMHS) in 300 mm semiconductor manufacturing facilities may need to evolve faster than expected considering the high performance demands on these facilities.
El-Kilany, Khaled S.
core  

Modular nonblocking verification using conflict equivalence

open access: yes, 2006
This paper proposes a modular approach to verifying whether a large discrete event system is nonconflicting. The new approach avoids computing the synchronous product of a large set of finite-state machines.
Malik, Robi, Flordal, Hugo, Malik, Malik
core   +1 more source

Effects of the Nozzle Tip Clogging and the Scanning Direction on the Deposition Process During Laser Metal Deposition of Alloy 718 Using a Four-Stream Discrete Nozzle [PDF]

open access: yes, 2019
Publisher Copyright: © 2019 The Authors. Published by Elsevier B.V.Depending on the configuration of the LMD system, the nozzle tilting is necessary to be able to manufacture parts with complex geometry.
Lamikiz, Aitzol   +4 more
core   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi   +3 more
wiley   +1 more source

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