A5048648644- Urban and Freight Transport Logistics
- Transportation Planning and Optimization
- Reliability and Maintenance Optimization
- Advanced Fiber Optic Sensors
- Maritime Ports and Logistics
- Tribology and Lubrication Engineering
- Life Cycle Costing Analysis
- Railway Engineering and Dynamics
- Vehicle emissions and performance
- Gear and Bearing Dynamics Analysis
- Risk and Safety Analysis
- Lubricants and Their Additives
- Mechanical stress and fatigue analysis
- Traffic Prediction and Management Techniques
- Statistical Distribution Estimation and Applications
- Fatigue and fracture mechanics
- Traffic and Road Safety
- High voltage insulation and dielectric phenomena
- Photonic and Optical Devices
- Air Quality and Health Impacts
- Urban Transport and Accessibility
- Infrastructure Maintenance and Monitoring
- Fault Detection and Control Systems
- Structural Load-Bearing Analysis
- Traffic control and management
Universidade do Porto
2015-2024
Universidade Nova de Lisboa
2016-2020
Institute of Mechanical Engineering and Industrial Mangement
2018
The University of Queensland
2013-2018
Polytechnic Institute of Viseu
2017
Queensland University of Technology
2000-2011
Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento
2001-2010
Institute for Systems Engineering and Computers
1998-2009
Australian Housing and Urban Research Institute
2000
The growing competitiveness of the market, coupled with increase in automation driven advent Industry 4.0, highlights importance maintenance within organizations. At same time, amount data capable being extracted from industrial systems has increased exponentially due to proliferation sensors, transmission devices and storage via Internet Things. These data, when processed analyzed, can provide valuable information knowledge about equipment, allowing a move towards predictive maintenance....
This paper presents a case study and model to predict maintenance interventions based on condition monitoring of diesel engine oil in urban buses by accompanying the evolution its degradation. Many times, under normal functioning conditions, properties lubricants, intervals that manufacturers recommend for change, are within safety conditions. Then, if lubricants’ is adequately accompanied, until reaching degradation limits, replacement can be enlarged, meaning buses’ availability increases,...
Acoustic emission monitoring is often used in the diagnosis of electrical and mechanical incipient faults high-voltage apparatus. Partial discharges are a source failure power transformers, differentiation from other sources acoustic emissions utmost importance. This paper reports development new sensor concept-mandrel-based fiber-optic sensor-for detection oil-filled taking direct measurements inside transformer. These sensors can be placed inner surface transformer tank wall, not affecting...
We present a new sensor configuration based on the intrinsic bend sensitivity of Bragg gratings written in D-type fibres. This can be embedded any layer composite material to evaluate curvature way independent axial strain and temperature. It also used measure other parameters such as acceleration, angle acoustic pressure.
Abstract Flexible transport services (FTS) have been of increasing interest in developing countries as a bridge between the use personal car travel and fixed route transit services. This paper reports on findings from recent study Queensland Australia, which identified lessons an international review implications for Australia. Potential strategic directions, including vision, mission, key result areas, strategies, means measuring performance are described. Evaluation criteria assessing...
Parameter estimation for Weibull distribution With right censored data using em algorithm ZastosoWanie algorytmu maksymaliZacji Wartości ocZekiWanej do estymacji ParametróW roZkładu Weibulla W PrZyPadku danych obciętych PraWostronnieThe maximum-likelihood (MLE) is a method of estimating the parameters statistical model given data.This allows us to estimate unknown model.These are obtained by maximizing likelihood function in question.In many practical situations associated with complex...
We present what we believe to be a novel miniaturized sensor configuration based on fiber Bragg gratings for simultaneous measurement of curvature and temperature in smart structures composite materials. Because the particular geometry sensing head, it is possible not only measure radius but also determine plane curvature. arrange three vertices smallest equilateral triangle that can defined by cross sections fibers. The set then inserted into glue-filled capillary stainless-steel tube...
An integrAted econometric model for bus replAcement And determinAtion of reserve fleet size bAsed on predictive mAintenAnce zintegrowAny ekonometryczny do modelowAniA wymiAny tAboru Autobusowego orAz określAniA wielkości floty rezerwowej w opArciu o konserwAcję predykcyjną Maintenance policies influence equipment availability and, thus, they affect a company's capacity productivity and competitiveness.It is important to optimize the Life Cycle Cost (LCC) assets, in this case, passenger...
The paper demonstrates the dependence of a fleet reserve buses on maintenance policy whole fleet, in particular, condition-based using motor oil degradation analysis. discusses an approach to evaluate and prediction next value for one relevant variable. methodology is based bus availability, estimated through mean time between failures repair ratios. Through use econometric models, it possible determine most rational size fleet.
The ageing of bridge stock in developed countries worldwide and the increasing number recorded collapses have underlined need for more sophisticated comprehensive assessment procedures concerning safety serviceability structures. In many recent failures, construction errors or deficiencies contributed to unfortunate outcome either by depleting margin speeding up deterioration rate This research aims quantify impact on structural a considering corresponding models available literature that...