The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform
Debi Kilb - One of the best experts on this subject based on the ideXlab platform.
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flash based tool for earthquake epicenter identification
Computer Science and Information Engineering, 2009Co-Authors: Youwen Ouyang, Matthew Lehmann, Katherine Hayden, Debi KilbAbstract:Previously, the methods used by scientists to locate an earthquake epicenter were so cumbersome, even for scientists, that the epicenter location methodology needed to be simplified before it was presented to K-12 students. Today, because of the advances in computer technology, there is a smaller divide between what is performed in research laboratories and what can be introduced in classrooms. The Flash-based Earthquake Location Tool (FELT) provides an authentic earthquake locating experience for students. FELT retrieves seismic data from recent earthquakes and displays seismograms that students can interact with in order to determine an earthquake’s epicenter. XML files provide reference points for the selected earthquakes and their seismograms. FELT allows its client to perform computations and interact with Google Maps API as it loads data, images and audios asynchronously, and redraws sections of the screen, all independent of the server with which it is connected.
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CSIE (2) - Flash-Based Tool for Earthquake Epicenter Identification
2009 WRI World Congress on Computer Science and Information Engineering, 2009Co-Authors: Youwen Ouyang, Matthew Lehmann, Katherine Hayden, Debi KilbAbstract:Previously, the methods used by scientists to locate an earthquake epicenter were so cumbersome, even for scientists, that the epicenter location methodology needed to be simplified before it was presented to K-12 students. Today, because of the advances in computer technology, there is a smaller divide between what is performed in research laboratories and what can be introduced in classrooms. The Flash-based Earthquake Location Tool (FELT) provides an authentic earthquake locating experience for students. FELT retrieves seismic data from recent earthquakes and displays seismograms that students can interact with in order to determine an earthquake’s epicenter. XML files provide reference points for the selected earthquakes and their seismograms. FELT allows its client to perform computations and interact with Google Maps API as it loads data, images and audios asynchronously, and redraws sections of the screen, all independent of the server with which it is connected.
Fabrizio Sarasini - One of the best experts on this subject based on the ideXlab platform.
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potential of wool felts in combination with glass fibres mechanical and low velocity impact assessment
Composites Part B-engineering, 2017Co-Authors: Simonetta Boria, C Santulli, Fabrizio Sarasini, Jacopo Tirillo, Alessandro P Caruso, Marcello InfantinoAbstract:Abstract Glass/wool felts hybrid laminates have been manufactured by hand lay-up using an epoxy resin and subjected to tensile, flexural and falling weight impact loading up to penetration. Two configurations with glass mat skins and wool felt cores with different thickness were compared and impact behaviour of both configurations was modelled. It can be suggested that the insertion of two wool felts instead of one in the laminate core would slightly improve their tensile and impact characteristics, less so for flexural ones. However, early occurrence of pull-out and the likely presence of porosity were found to affect the performance of the laminates, especially in terms of the appearance of early damage under impact loading. On the other side, the model proved largely capable of predicting the features of impact hysteresis cycles on these structures, which presented some mechanical complexity due to the tendency of wool fibres to be highly coiled in felts.
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Mechanical behaviour of jute cloth/wool felts hybrid laminates
Materials & Design, 2013Co-Authors: Carlo Santulli, Fabrizio Sarasini, Jacopo Tirillo, Teodoro Valente, Marco Valente, A. P. Caruso, M. Infantino, E. Nisini, Giangiacomo MinakAbstract:Abstract This experimental work is aimed at the characterization of new fibre reinforced composites based on epoxy resin with both protein (wool) and lignocellulosic (jute) natural fibres. Wool-based and hybrid (wool/jute) composites with two different stacking sequences (intercalated and sandwich) were developed. Their microstructure has been investigated through optical and scanning electron microscopy, whereas their quasi-static mechanical behaviour has been evaluated in tension and bending. In addition, the impact behaviour under low-velocity impact at three different impact energies, namely 6 J, 8 J and 9 J has been addressed. The tensile and flexural tests have been monitored using acoustic emission (AE) in order to elicit further information about failure mechanisms. AE monitoring showed that development of damage was due to nucleation of matrix microcracks and subsequent debonding and pull-out phenomena in wool fibre composites and that only in hybrid composites a sufficient stress transfer across the jute fibre/matrix interface was achieved. The results confirmed the positive role of hybridization with jute fibres in enhancing both the tensile and flexural behaviour of wool-based composites, though highlighting the need for an improved adhesion between wool fibres and epoxy matrix.
Jacopo Tirillo - One of the best experts on this subject based on the ideXlab platform.
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potential of wool felts in combination with glass fibres mechanical and low velocity impact assessment
Composites Part B-engineering, 2017Co-Authors: Simonetta Boria, C Santulli, Fabrizio Sarasini, Jacopo Tirillo, Alessandro P Caruso, Marcello InfantinoAbstract:Abstract Glass/wool felts hybrid laminates have been manufactured by hand lay-up using an epoxy resin and subjected to tensile, flexural and falling weight impact loading up to penetration. Two configurations with glass mat skins and wool felt cores with different thickness were compared and impact behaviour of both configurations was modelled. It can be suggested that the insertion of two wool felts instead of one in the laminate core would slightly improve their tensile and impact characteristics, less so for flexural ones. However, early occurrence of pull-out and the likely presence of porosity were found to affect the performance of the laminates, especially in terms of the appearance of early damage under impact loading. On the other side, the model proved largely capable of predicting the features of impact hysteresis cycles on these structures, which presented some mechanical complexity due to the tendency of wool fibres to be highly coiled in felts.
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Mechanical behaviour of jute cloth/wool felts hybrid laminates
Materials & Design, 2013Co-Authors: Carlo Santulli, Fabrizio Sarasini, Jacopo Tirillo, Teodoro Valente, Marco Valente, A. P. Caruso, M. Infantino, E. Nisini, Giangiacomo MinakAbstract:Abstract This experimental work is aimed at the characterization of new fibre reinforced composites based on epoxy resin with both protein (wool) and lignocellulosic (jute) natural fibres. Wool-based and hybrid (wool/jute) composites with two different stacking sequences (intercalated and sandwich) were developed. Their microstructure has been investigated through optical and scanning electron microscopy, whereas their quasi-static mechanical behaviour has been evaluated in tension and bending. In addition, the impact behaviour under low-velocity impact at three different impact energies, namely 6 J, 8 J and 9 J has been addressed. The tensile and flexural tests have been monitored using acoustic emission (AE) in order to elicit further information about failure mechanisms. AE monitoring showed that development of damage was due to nucleation of matrix microcracks and subsequent debonding and pull-out phenomena in wool fibre composites and that only in hybrid composites a sufficient stress transfer across the jute fibre/matrix interface was achieved. The results confirmed the positive role of hybridization with jute fibres in enhancing both the tensile and flexural behaviour of wool-based composites, though highlighting the need for an improved adhesion between wool fibres and epoxy matrix.
Vigneashwara Pandiyan Solai Raja Pandiyan - One of the best experts on this subject based on the ideXlab platform.
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Modelling and in-process monitoring of abrasive belt grinding process
'Nanyang Technological University', 2019Co-Authors: Vigneashwara Pandiyan Solai Raja PandiyanAbstract:Automation and self-monitoring implementation of manufacturing processes will support the development of interoperable ecosystem relevant to the Industry 4.0 concept. Among many industrial cases, abrasive belt grinding is a tertiary machining process used to achieve desired surface quality and to machine off features such as burrs and weld seams. Manufacturers are in the need of an ability to closely monitor and optimise the performance of abrasive belt grinding processes to meet tight tolerances. The abrasive belt grinding process is highly nonlinear due to the complexity of the underlying physical mechanisms, some of which remain unknown. Existing research in the literature on in-situ tool wear prediction were primarily focused on hard tools, but limited effort can be found on that of compliant belt tools. Although many advanced machining cells are equipped with belt grinder and robotic manipulators for surface finishing, industries still rely on skilled operators to manually remove weld seams using belt sanders. Self monitoring of such a dynamic process in industrial robot cell environment is essential in having a fully automated system. This research aims to model the robotic abrasive belt grinding process in dry conditions appropriate for monitoring purposes. The first part of this thesis discusses the influence of the process parameters on material removal and surface quality in abrasive belt grinding process. Interpretation of Taguchi's Design of Experiments (DoE) experimental results revealed that abrasive grain distribution on backing material has significant influence on material removal and surface quality. Subsequently, a systematic approach to mathematically model the belt grinding process using regression techniques based on soft computing is presented. The second part of the thesis deals with real-time monitoring of the belt grinding tool life. Predicting belt tool life helps to determine whether it is under-utilised, overused or it is due for replacement. Unlike other rigid abrasive machining tools, in abrasive belts the grains are not regenerated. The influence of grain wear on material removal mechanisms namely cutting, ploughing and rubbing were investigated with single grit scratch tests and Acoustic Emission (AE) sensor reading analysis. Having understood the effect of abrasive grain wear on belt grinding performance, a methodology to virtually monitor the coated abrasive belt tool life in real time with the help of physical sensors and machine learning classifiers is developed. In the last part of this thesis, an automated weld seam removal method is proposed. The method offers a real time endpoint verification system for weld seam removal using accelerometer, force and vision-based sensors along with machine learning and deep learning algorithms. Expectedly, this will reduce unnecessary costs and also increase the safety level of operators. In general, the proposed modelling and virtual metrology techniques will add values to the entire manufacturing process, in particular to those involving abrasive belt grinding, and will comply to Industry 4.0 objectives.Doctor of Philosoph
Marcello Infantino - One of the best experts on this subject based on the ideXlab platform.
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potential of wool felts in combination with glass fibres mechanical and low velocity impact assessment
Composites Part B-engineering, 2017Co-Authors: Simonetta Boria, C Santulli, Fabrizio Sarasini, Jacopo Tirillo, Alessandro P Caruso, Marcello InfantinoAbstract:Abstract Glass/wool felts hybrid laminates have been manufactured by hand lay-up using an epoxy resin and subjected to tensile, flexural and falling weight impact loading up to penetration. Two configurations with glass mat skins and wool felt cores with different thickness were compared and impact behaviour of both configurations was modelled. It can be suggested that the insertion of two wool felts instead of one in the laminate core would slightly improve their tensile and impact characteristics, less so for flexural ones. However, early occurrence of pull-out and the likely presence of porosity were found to affect the performance of the laminates, especially in terms of the appearance of early damage under impact loading. On the other side, the model proved largely capable of predicting the features of impact hysteresis cycles on these structures, which presented some mechanical complexity due to the tendency of wool fibres to be highly coiled in felts.
