UH Research Archive: Recent submissions
Now showing items 2221-2240 of 11139
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Design of Composite Sandwich Shock Absorber Mounting for an Innovative Rail Vehicle End
(Newswood Limited, 2015-07)This paper describes the design of composite shock absorber mounting for an innovative rail vehicle end in which structural, crash and aerodynamic functionalities are realized in a single integrated element. An experimental ... -
Low Velocity Impact Response of Composite Panels for Aeronautical Applications
(Newswood Limited, 2015)The present experimental work analyses the impact behaviour of thermosetting composite materials for aeronautic applications. The main goal of the experimental activity was to identify the energy level in correspondence ... -
Structural Optimization of a Total Replacement Hip Prosthesis
(Newswood Limited, 2015)Planted articular joints replace bone articulation allowing the transfer of loads and articular displacements. However, hip prosthesis cannot guarantee the same dynamic friction coefficients of natural joints. The present ... -
About the Impact Behaviour of Railway Fastening Systems
(Newswood Limited, 2015-07)On the basis of what established by the Product Technical Specifications - Specifiche Tecniche di Prodotto RFI (STP) - regarding the performance requirements that fastening systems between sleepers and rails should meet ... -
Composite Material Design for Rail Vehicle Innovative Lightweight Components
(Newswood Limited, 2015)This paper describes the redesign activities of lightweight rail vehicle component using advanced composite materials. The activities have been carried out in the framework of the SCILLA-M National Project funded by Ministry ... -
Analysis method of crack propagation data by genetic algorithms
(TRANS TECH PUBLICATIONS LTD, 2010-11)A practice for analyzing some raw data from fatigue crack growth tests, carried out on specimens obtained from a railway component (wheel), is presented. Despite the data sample is small, it allows to identify the material ... -
Fatigue crack growth simulation in railway axles
(TRANS TECH PUBLICATIONS LTD, 2011-09)In order to carry out the railway axle design according to the "Damage Tolerance" philosophy, reliable crack-growth models for these kind of components are necessary. Indeed, damage tolerance principles have received more ... -
Selecting the Minkowski Exponent for Intelligent K-Means with Feature Weighting
(Springer Nature, 2014-05)Recently, a three-stage version of K-Means has been introduced, at which not only clusters and their centers, but also feature weights are adjusted to minimize the summary p-th power of the Minkowski p-distance between ... -
On Drive-by-Download Attacks and Malware Classification
(North East Wales Institute, 2013-09) -
An Empirical Evaluation of Different Initializations on the Number of K-Means Iterations
(Springer Nature, 2013)This paper presents an analysis of the number of iterations K-Means takes to converge under different initializations. We have experimented with seven initialization algorithms in a total of 37 real and synthetic datasets. ... -
Constrained Clustering with Minkowski Weighted K-Means
(Institute of Electrical and Electronics Engineers (IEEE), 2012)In this paper we introduce the Constrained Minkowski Weighted K-Means. This algorithm calculates cluster specific feature weights that can be interpreted as feature rescaling factors thanks to the use of the Minkowski ... -
Weighting Features for Partition around Medoids Using the Minkowski Metric
(Springer Nature, 2012)In this paper we introduce the Minkowski weighted partition around medoids algorithm (MW-PAM). This extends the popular partition around medoids algorithm (PAM) by automatically assigning K weights to each feature in a ... -
On Initializations for the Minkowski Weighted K-Means
(Springer Nature, 2012)Minkowski Weighted K-Means is a variant of K-Means set in the Minkowski space, automatically computing weights for features at each cluster. As a variant of K-Means, its accuracy heavily depends on the initial centroids ... -
Overview of optical local access networks development and design challenges
(2010-12-01)Local access network technologies tend to take advantage of the potentially huge capabilities of fiber communication to deliver faster and more various services to end users. There has been considerable research effort in ... -
Damage Tolerance of Rail Vehicle Energy Absorbers
(2012)Despite significant progress in the design of rail vehicles to ensure a high level of passive safety the effects of quality of manufacturing and assembly parameters on the local and global structural behavior in the event ... -
Assessment of Fatigue Cracks in Rails
(2012)The fatigue behaviour of cracks at the foot region of a rail subjected to bending load has been investigated. Depending on the position of initiation of a small semi-elliptical surface crack in a rail, the crack front ... -
Transport of DE-LIGHT: The Design and Prototyping of a Lightweight Crashworthy Rail Vehicle Driver's Cab
(2012)This paper describes the design, validation and prototyping of a lightweight crashworthy rail vehicle driver's cab using advanced composite sandwich materials. By exploiting the lightweighting, energy absorption and design ... -
On the mechanical characterization of materials by Arcan-type specimens
(2011-05)The simple circular notched specimen was originally proposed by Arcan to characterize the elastic properties of fibre-reinforced composites. Unfortunately, its optimized geometry does not allow to measure with reasonable ... -
About the preliminary design of a self-aligning energy absorber system for railway vehicles
(2013-10-01)A new impact energy absorber for a railway car, which maintains its optimal performances even when an impact with a vertical offset occurs, is described. Starting from the description of the concept design, the present ...