Search
Now showing items 91-100 of 230
Characterization of the CBN wheel wear and modelling or its effects on NGV grinding.
(2020-01-28)
This thesis is focused on improving a paramount grinding process used in the aeronauticindustry. The process is one of the last manufacturing steps of the nozzle guide vanes, whichform the stator of the exhaust of aeroengines. ...
Design of an active reconfigurable 2R joint
(Springer, 2019-06-14)
The increasing flexibility requirements in the manufacturing processes has led to the development of novel reconfigurable mechanisms to be implemented in ma-chine heads and tables. This is the case of the reconfigurable ...
Analysis and treatment of indexes for decision-making about road pavement rehabilitation under sustainability criteria: application to the road network of Biscay
(2018-12-14)
Due to the competition of funding among different sectors of the economy and society, Pavement Management Systems (PMS) have become necessary for road agencies to design more cost-effective and longer lasting pavements and ...
Research Trends in Pavement Management during the First Years of the 21st Century: A Bibliometric Analysis during the 2000–2013 Period
(MDPI, 2018-07)
A bibliometric analysis based on Scopus database was carried out to identify the global research trends related to pavement management area from 2000 to 2013, and to improve the understanding of the research topics in that ...
IRI Performance Models for Flexible Pavements in Two-Lane Roads until First Maintenance and/or Rehabilitation Work
(MDPI, 2020-01-22)
Pavement performance models play a vital role in any pavement management system. The Regional Government of Biscay (RGB) (Spain) manages a 1200 km road network and conducts pavement data collections, including the International ...
On the study of train-track dynamic interactions caused by rail welds on discrete supported rails
(Elsevier, 2014-06-15)
The paper studies the influence of rail weld dip on wheel-rail contact dynamics, with particular reference to freight trains where it is important to increase the operating speed and also the load transported. This has ...
Design of an optimised wheel profile for rail vehicles operating on two track gauges
(Taylor & Francis, 2013-01)
This paper sets out an optimum synthesis methodology for wheel profiles of railway vehicles in order to secure good dynamic behaviour with different track configurations. Specifically, the optimisation process has been ...
SEM and EDS Characterisation of Layering TiOx Growth onto the Cutting Tool Surface in Hard Drilling Processes of Ti-Al-V Alloys
(Hindawi Publishing Corporation, 2011)
Scanning electron microscopy (SEM) has been used to identify and analyse the secondary adhesion effect precursors formed during
the dry drilling processes of Ti-6Al-4V alloy over the rake face and flute of the drilling ...
A rational fraction polynomials model to study vertical dynamic wheel-rail interaction
(Elsevier, 2012-04)
This paper presents a model designed to study vertical interactions between wheel and rail when the wheel moves over a rail welding. The model focuses on the spatial domain, and is drawn up in a simple fashion from track ...
Modelling rail corrugation with specific track parameters focusing on ballasted track and slab track
(Taylor & Francis, 2011-11)
The objective of this paper is to compare 3 types of track (high performance ballasted track, STEDEF and AFTRAV) from the corrugation growth point of view. This work has considered different vehicle speeds and track ...