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Transverse vibration and stability of a functionally graded rotating annular disk with a circumferential crack
(
Elsevier Ltd
, 2016 , Article)
Out of plane vibration of rotating disks limits their performances especially at certain critical speed. The critical speed of these disks may be affected by the presence of defects such as a circumferential crack. In this ...
Mechanical and physical behavior of newly developed functionally graded materials and composites of stainless steel 316L with calcium silicate and hydroxyapatite
(
Elsevier
, 2015 , Article)
This study aimed to investigate the structural, physical and mechanical behavior of composites and functionally graded materials (FGMs) made of stainless steel (SS-316L)/hydroxyapatite (HA) and SS-316L/calcium silicate ...
Effects of high frequency drive speed modulation on rotor with continuous stator contact
(
Elsevier Ltd
, 2017 , Article)
In many mechanical systems, rotating structures experience continuous rotor-stator contact and torsion motions are dominant in the response. Drill strings used in the oil and gas industry represent one example of rotating ...
A novel model and decomposition approach for the integrated airline fleet assignment, aircraft routing, and crew pairing problem
(
INFORMS Inst.for Operations Res.and the Management Sciences
, 2017 , Article)
Given a daily flight schedule and a set of aircraft fleets, the airline scheduling problem assigns individual aircraft and groups of crew to each flight based on specific considerations of aircraft maintenance requirements ...
Short-term planning of liquefied natural gas deliveries
(
Elsevier Ltd
, 2018 , Article)
The ability of a supplier of liquefied natural gas (LNG) to deliver cargoes at desired times, while effectively managing a fleet of cryogenic vessels can significantly impact its profits. We investigate in this paper an ...
Solving a large-scale crew pairing problem
(
Palgrave Macmillan Ltd.
, 2015 , Article)
Airline companies seek to solve the problem of determining an assignment of crews to a pre-determined flight schedule with minimum total cost, called the Crew Pairing Problem (CPP). Most of the existing studies focus on ...
Multiple parts process planning in serial-parallel flexible flow lines: part I—process plan modeling framework
(
Springer London
, 2015 , Article)
In recent years, integrated process planning and scheduling models have been proposed as solutions that can bridge the gap between practical process planning and production scheduling. However, most structures of these ...
Large eddy simulation of surge inception and active surge control in a high speed centrifugal compressor with a vaned diffuser
(
Elsevier Inc.
, 2016 , Article)
In this study, we present a numerical investigation of active surge control and performance improvement for an aero engine centrifugal compressor (NASA CC3) using self-recirculating bleed slots with different bleeding ...
Energy consumption and conservation practices in Qatar - A case study of a hotel building
(
Elsevier
, 2014 , Article)
This paper considers energy conservation practices in Qatar with special emphasis on commercial buildings. Energy conservation approaches are classified into five main areas and an Energy Conservation Matrix (ECM) database ...
A model to evaluate acquisition price and quantity of used products for remanufacturing
(
Elsevier
, 2012 , Article)
In this paper, an analytical model is proposed to evaluate optimal acquisition price and quantity policy based on the quality of returned used products that are subsequently used for remanufacturing. The model is developed ...