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Research Article | 27-February-2017

TIRE WEAR MODELING

Summary. On the basis of a known relationship, an enhanced model for specific tire wear per kilometer has been developed. It is appropriate for practical use - for evaluation of the influence of different factors. Two types of experiments have been carried out with a testing device - one without sideslip, but with a known longitudinal slip, and the other one with the same longitudinal slip but also with a known sideslip. As a result, the coefficients of the proportion of the

Rosen IVANOV

Transport Problems, Volume 11 , ISSUE 3, 111–120

Research Article | 21-April-2017

AN EXPERIMENTAL RESEARCH ON THE WEAR OF TRUCK TIRE

Summary. An experimental device and methodology for tire wear investigation are presented. An indirect method for wear evaluating is used. The experimental results in cases of straight motion with and without side slip are obtained. The distribution of wearing on tread pattern wide is evaluated in different running conditions.

Rosen IVANOV, Krasimir GEORGIEV, Georgi KADIKYANOV, Gergana STANEVA

Transport Problems, Volume 10 , ISSUE 4, 91–98

research-article | 30-November-2020

Comparison between actual hawley retainer wear time and self-reported declaration

Introduction A retention protocol is a critical process in order to maintain an orthodontic treatment result. There is no universal agreement describing retention wear protocols for removable appliances. Many providers have indicated that it would be advantageous to wear these appliances for at least one year following fixed appliance removal.1,2 However, patients are usually required to wear retainers after active orthodontic treatment for several years or even for a lifetime in order to

Ezgi Atik, Muge Aksu, Tülin Taner

Australasian Orthodontic Journal, Volume 37 , ISSUE 2, 342–351

Research paper | 10-April-2013

STUDY ON FEATURE SELECTION AND IDENTIFICATION METHOD OF TOOL WEAR STATES BASED ON SVM

This paper presents an on-line tool wear condition monitoring system for milling. The proposed system was developed taking the cost and performance in practice into account, in addition to a high success rate. The cutting vibration signal is obtained during the cutting process, and then extracting features using time-domain statistical and wavelet packet decomposition algorithms. It would result in two major disadvantages if creating a tool wear states identification model based on all

Weilin Li, Pan Fu, Weiqing Cao

International Journal on Smart Sensing and Intelligent Systems, Volume 6 , ISSUE 2, 448–465

Article | 24-November-2017

POSSIBILITIES OF INCREASING THE DURABILITY OF CHAIN WHEELS OF ARMOURED-FACE CONVEYORS

The main objective of the study was to demonstrate the possibility of replacing the materials of domestic and foreign production currently used for chain drums with alternative materials. ADIs were selected as materials that may replace the cast steels used so far. L35GSM cast steel, commonly used for mining chain wheels and austempered ductile iron, conforming with the requirements of EN-GJS-1400-1 quality grade were subjected to wear tests. On the basis of the experimental studies it has been

Andrzej N. WIECZOREK

Transport Problems, Volume 12 , ISSUE 3, 71–82

Article | 04-November-2019

ANALYSIS OF SHAFT WEAR IN TURBOCHARGES OF AUTOMOTIVE VEHICLES

The article presents the results of the investigations of turbocharger shaft bearing using different kinds of lubrication conditions (dry friction and lubrication with different kind of oils). In particular, the wear of the turbocharger shaft surface was evaluated. One of the most frequent failures is the seizure of the turbocharger shaft in the slide bearing, causing its rotation, which leads to destruction of the assembly and costly repairs. On the basis of the conducted tests, it was found

Damian HADRYŚ, Henryk BĄKOWSKI, Zbigniew STANIK, Andrzej KUBIK

Transport Problems, Volume 14 , ISSUE 3, 85–96

Article | 31-July-2018

INFLUENCE OF PRIMARY SILICON PRECIPITATES ON ANODIZED ALUMINUM ALLOYS SURFACE LAYER PROPERTIES

material. The microstructure of the obtained surface layer was analyzed by taking into account the primary silicon precipitates. The results of the hardness and abrasive wear test also show the influence of anodizing and electrolyte parameters on the structure and properties of the tested aluminium alloys.

Krzysztof Labisz, Jarosław Konieczny, Łukasz Wierzbicki, Janusz Ćwiek, Anna Butor

Transport Problems, Volume 13 , ISSUE 2, 111–120

Article | 25-November-2017

ANALYSIS OF DYNAMICS OF AMETRO VEHICLEMODEL WITH DIFFERENTIALWHEELSETS

circumstances. In addition, a two-point contact is likely to occur, which, in turn, leads to accelerated wear of not only the wheels’ tread but also their flanges. One of the proposals to deal with problems associated with the wheel–rail interaction in tight curves is implementing an automotive solution: a differential gear. The aim of the study is to investigate the dynamic behavior of a metro vehicle model equipped with differentials at each wheelset. The differentials were tested in two main

Rafał MELNIK, Bogdan SOWIŃSKI

Transport Problems, Volume 12 , ISSUE 3, 113–124

research-article | 13-July-2021

The effectiveness of Hawley and vacuum-formed retainer usage protocols on the stability of fixed orthodontic treatment results

advantages of removable retainers can be listed as the easier maintenance of oral hygiene by removing the appliance during tooth cleaning, and the possibility of night-time only wear.2 The two removable retainers most commonly used in orthodontic practice are the Hawley appliance and vacuum-formed retainers (VFRs).3 Several studies have previously compared the provision of a Hawley retainer or VFR, related to stability,4,5 acceptability,6 speech performance,7 changes in occlusal contacts,8 survival time

Hande Gorucu-Coskuner, Ezgi Atik, Tülin Taner

Australasian Orthodontic Journal, Volume 37 , ISSUE 1, 69–78

Research Article | 21-April-2017

The sophisticated control of the tram bogie on track

The paper deals with the problems of routing control algorithms of new conception of tram vehicle bogie. The main goal of these research activities is wear reduction of rail wheels and tracks, wear reduction of traction energy losses and increasing of running comfort. The testing experimental tram vehicle with special bogie construction powered by traction battery is utilized for these purposes. This vehicle has a rotary bogie with independent rotating wheels driven by permanent magnets

Radovan DOLECEK, Ondrej CERNY, Ivo DRAHOTSKY

Transport Problems, Volume 10 , ISSUE 3, 43–51

Article | 01-September-2015

DYNAMIC PERFORMANCE INFLUENCES ON HOPF BIFURCATION CHARACTERISTICS FOR VEHICLES

studied during operation in straight track conditions with imposed high interference German track irregularity spectra with the premise of dynamic performance normalized indices processing. The study shows that: VEHICLE 1 exhibits a subcritical bifurcation characteristic under different wheel-rail matching conditions. VEHICLE 2 dynamic performance index values do not increase as speed increases, but wear index gradually increased with increased speed. Vehicles with different structural parameters

Haiyan Zhu, Pingbo Wu, Jing Zeng, Guoyao Mai

International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 3, 1786–1805

Article | 20-July-2021

A survey of retention and retainer practices of orthodontists in Australia

(TRs) were the most commonly chosen retainer in the maxilla (39.4%) and bonded retainers (BRs) were most commonly chosen in the mandible (38.5%). An initial period of full-time wear of removable retainers (RRs) was prescribed by 37.7–48.3%. ‘Night/sleeping with reducing frequency over time’ was the most commonly prescribed part-time RR wear practice (28.1–33.5%). Indefinite retainer wear was recommended by 85.3–87.4% of orthodontists. Indefinite retainer checks were

Maurice J. Meade, Craig W Dreyer

Australasian Orthodontic Journal, Volume 35 , ISSUE 2, 174–183

Research Article | 27-February-2017

IMPROVEMENT OF WORKING CONDITIONS OF THE FREIGHT LOCOMOTIVE RUNNING GEAR

George TUMANISHVILI, Tamaz NATRIASHVILI, Givi GOLETIANI, Victor ZVIADAURI, Tengiz NADIRADZE

Transport Problems, Volume 11 , ISSUE 3, 103–109

research-article | 12-October-2021

A national survey of orthodontists in Malaysia and their use of functional appliances for Class II malocclusions

, this is not supported by scientific evidence.4,5 The clinical effects of functional appliances are reported to be mostly dentoalveolar changes, with 70% of overjet reduction achieved by tipping of the incisors.6 Functional appliances may be divided into two types, either fixed or removable.1 The main management difference between these is the variable compliance demands placed on the patient. Removable appliances require compliance by adherence to wear instructions while fixed functional appliances

Aufa Dahlia Bahar, Yasmin Kamarudin, Stephen Chadwick

Australasian Orthodontic Journal, Volume 37 , ISSUE 2, 217–226

Article | 08-December-2019

PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART II: EXAMPLES

The second part of the paper continues a discussion on the topic of parallel computations in railway dynamics. The algorithms described in the first part of the paper are applied to parallel simulation on computers with multicore processors of six different models of rail vehicles and trains with the number of degrees of freedom from about one hundred to more than 20 thousands. A considerable simulation speedup is reported. In addition, an example of evaluation of wheel profile wear on

Dmitry POGORELOV, Alexander RODIKOV, Roman KOVALEV

Transport Problems, Volume 14 , ISSUE 4, 31–38

Article | 04-November-2019

PARALLEL COMPUTATIONS AND CO-SIMULATION IN UNIVERSAL MECHANISM SOFTWARE. PART I: ALGORITHMS AND IMPLEMENTATION

Parallel computations speed up simulation of multibody system dynamics, in particular, dynamics of railway vehicles and trains. It is important for reduction of required time at the stage of new railway vehicle design, for increase of complexity of studied problems and for real-time applications. We consider realization of parallel computations in Universal Mechanism software in three different areas: simulation of rail vehicle and train dynamics, evaluation of wheel profile wear and multi

Dmitry POGORELOV, Alexander RODIKOV, Roman KOVALEV

Transport Problems, Volume 14 , ISSUE 3, 163–175

Article | 16-April-2018

The ROAM Project Part 1: Exploring new frontiers in video conferencing to expand the delivery of remote O&M services in regional Western Australia

Twenty-five trials were conducted over a three-month period to investigate the potential for delivering O&M services remotely via video conferencing. Participants varied in age, geographical location, level of functional vision, and O&M goals. The video conferencing connection was made using the Vidyo software platform. Eleven participants (located remotely) were required to wear a chest harness that had been adapted to connect with an iPhone 6+, and were accompanied by a support person

Amy Barrett-Lennard, M.HSer. (O&M), B.Sc. (OT)

International Journal of Orientation & Mobility, Volume 8 , ISSUE 1, 101–118

Research paper | 13-December-2017

NON-INVASIVE CHARACTERIZATION OF TOTAL HIP ARTHROPLASTY BY MEANS OF PASSIVE ACCELERATION
MEASUREMENT

M. Lieschnegg, M. Zacherl, B. Lechner, C. Weger, A. Fuchs

International Journal on Smart Sensing and Intelligent Systems, Volume 3 , ISSUE 1, 75–87

Article | 26-March-2020

DEVELOPMENT OF THE MATHEMATICAL MODEL OF FUEL EQUIPMENT AND JUSTIFICATION FOR DIAGNOSING DIESEL ENGINES BY INJECTOR NEEDLE DISPLACEMENT

injector needle on the increase, due to wear, of the radial clearance of the plunger bushing at the minimum steady state of idling of the engine has been determined. The technique of diagnosing the technical condition of plunger pairs of a high-pressure fuel pump by injector needle displacement is considered in detail.

Igor DANILOV, Aleksander MARUSIN, Mikhail MIKHLIK, Ivan USPENSKY

Transport Problems, Volume 15 , ISSUE 1, 93–104

Article | 20-July-2021

Orthodontic patient co-operation: a review of the clinician's role in predicting and improving patient compliance

This systematic narrative review outlines factors associated with patient co-operation during orthodontic treatment. The co-operation of orthodontic patients, related to oral hygiene, appliance wear, diet and appointment attendance, can be highly influential on treatment outcome and the development of a number of potential adverse effects. While each patient is an individual with unique variations, patient age, gender, socio-economic status, parental relationships and psychological factors have

Fiona Firth, Florence Bennani, Suzan Stacknik, Mauro Farella

Australasian Orthodontic Journal, Volume 35 , ISSUE 1, 5–12

Article | 01-September-2012

AN APPROPRIATE PROCEDURE FOR DETECTION OF JOURNAL-BEARING FAULT USING POWER SPECTRAL DENSITY, K-NEAREST NEIGHBOR AND SUPPORT VECTOR MACHINE

) corrosion and (iii) excessive wear. The features of the PSD values of vibration signals were extracted using statistical and vibration parameters. The extracted features were used as inputs to the KNN and SVM for three-class identification. The roles of PSD technique and the KNN and SVM classifiers were investigated. Results showed that the accuracy rate of fault diagnosis was 100%. Also, the results demonstrated that the combined PSD-SVM model had the potential for fault diagnosis of engine journal

A. Moosavian, H. Ahmadi, A. Tabatabaeefar, B. Sakhaei

International Journal on Smart Sensing and Intelligent Systems, Volume 5 , ISSUE 3, 685–700

Research Article | 21-April-2017

MODELLING THE IMPLEMENTATION OF A BAGGAGE TRANSPORT SYSTEM IN NEWCASTLE UPON TYNE FOR PASSENGERS USING MIXED-MODE TRAVEL

This paper models a proposed system that has the potential to transport baggage. It makes use of a modal choice model to examine how effective the system would be if implemented. The introduction of a baggage collection system would increase the number of passengers using public transport which would be good for the environment. The specific location of the study was Tyne and Wear and a journey from North Shields to Newcastle International Airport was chosen for the analysis. With the

Daniel Connor REECE, Marin MARINOV

Transport Problems, Volume 10 , ISSUE 4, 149–155

Report | 20-July-2021

Growth-enabling modified Groper appliance for the replacement of permanent maxillary incisors: Report of two cases

long-term wear.

Volkan Arikan, Duygu Ocal, Merve Akcay, Ayse Tuba Altug, Levent Ozer, Emre Cesur

Australasian Orthodontic Journal, Volume 36 , ISSUE 1, 108–113

Article | 04-November-2019

CONTROL OF THE BEGINNING OF ACCIDENTS IN RAILROAD OPERATION SAFETY SYSTEMS IN SEISMICALLY ACTIVE REGIONS USING THE NOISE TECHNOLOGY

On the railroads in seismically active regions, the impact of frequent weak earthquakes accelerates the initiation of defects such as wear and tear, cracks and deformation due to fatigue. An analysis of the types and stages of initiation and development of defects preceding accidents at technical facilities has shown that the registration of the beginning of the latent period of transition of objects to an emergency state based on the results of traditional technologies of analysis of

Telman ALIEV, Tofig BABAYEV, Tahir ALIZADA, Narmin RZAYEVA

Transport Problems, Volume 14 , ISSUE 3, 155–162

Article | 24-June-2021

MATERIALS USED IN THE COMBAT AVIATION CONSTRUCTION

greater heat-resistance and anti-corrosion properties, as well as high wear resistance in addition to the aforementioned hardness, which increases by as much as 15% for the AlSi9Cu4 alloy compared with the alloy after standard heat treatment. Such an increase in the values of the mechanical properties makes it possible to use the investigated alloy in applications including, e.g., recyclable thermally exposed surfaces, such as pistons in internal combustion engines, which enables further decrease in

Jarosław KONIECZNY, Krzysztof LABISZ

Transport Problems, Volume 16 , ISSUE 2, 5–18

Article | 04-March-2018

SELF-DIAGNOSIS METHOD FOR CHECKING THE WAYSIDE SYSTEMS FOR WHEEL-RAIL VERTICAL LOAD MEASUREMENT

stability. The data provided by these measurements could give useful information to correlate the wear of the track with the frequency of applied loads, helping in the development of a better maintenance strategy of railway networks [2]. In this paper, the monitoring of vertical forces is based on the SMCV (Vertical Loads Monitoring System) method, where shear strains of the rail web are measured with a simple combination of four electrical strain gauges, placed on both sides of the rail web along each

Daniele CORTIS, Stefano GIULIANELLI, Gabriele MALAVASI, Stefano ROSSI

Transport Problems, Volume 12 , ISSUE 4, 91–100

Research paper | 27-December-2017

AN ENERGY EFFICIENT, MINIMALLY INTRUSIVE MULTI-SENSOR INTELLIGENT SYSTEM FOR HEALTH MONITORING OF ELDERLY PEOPLE

these issues. The central controller unit has an in-built algorithm based on two level adaptive branch prediction techniques to detect the period of inactivity of sensor nodes. Further, only one wearable heart rate sensor node is included in the system which measures the heart rate and detects abnormality. The central controller signals an alarm to the user to wear this predicting the sleeping time. This makes the system minimally intrusive and user friendly. Thus the multi-sensor network consists

N. Samanta, A.K. Chanda, C. RoyChaudhuri

International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 2, 762–780

Research Article | 21-April-2017

HOW TO FACILITATE THE MOVEMENT OF PASSENGERS BY INTRODUCING BAGGAGE COLLECTION SYSTEMS FOR TRAVEL FROM NORTH SHIELDS TO NEWCASTLE INTERNATIONAL AIRPORT

This paper reviews current systems that either transport baggage or have the potential to transport baggage, as well as proposed systems, before modelling some of them in a modal choice model to examine how effective they would be if implemented. It was hoped that the introduction of a baggage collection system would increase the number of passengers using public transport which would be good for the environment. The specific location of the study was Tyne and Wear and a journey from North

Daniel Connor REECE, Marin MARINOV

Transport Problems, Volume 10 , ISSUE SE, 141–154

Article | 20-July-2021

Evaluation of treatment risks and the quality of information contained within the websites of specialist orthodontists

sports mouthguard wear. The proposed benefits of orthodontic treatment were outlined by 85.7%. The mean (standard deviation [SD]) overall DISCERN score was 43.78 (SD 6.49; range 17–59). No website displayed the HON Seal certification. The mean FRE Score was 51.71 (SD 10.19; range 30.1–74.7). Conclusions: Information regarding orthodontic treatment risks contained within specialist orthodontic practice websites appears deficient. Websites were of variable reliability, quality and

Maurice J. Meade, Craig W. Dreyer

Australasian Orthodontic Journal, Volume 35 , ISSUE 2, 143–151

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