Kamil Sybilski

Military University of Technology | WAT · Faculty of Mechanical Engineering

This paper presents the development of a novel microvehicle concept under the H2020 LEONARDO project, which targets the limitations of current micromobility solutions. By combining the features of a monowheel and a kick scooter, the vehicle is designed to enhance safety, comfort, and convenience for urban transport. It employs an innovative control...

Excessive orthodontic force can induce inflammatory tooth root resorption due to sustained high stresses within the periodontal ligament (PDL). This study aimed to analyze the PDL pressures during upper incisor retraction using the en masse method with TISAD. The finite element method (FEM) ensured consistent conditions across cases. The models inc...

In this paper, we present a quantitative assessment of muscle fatigue using surface electromyography (sEMG), a widely recognized method that is conducted through various analytical approaches, including analysis of spectral and time-frequency distributions. Existing research in this field has demonstrated considerable variability in the computation...

In the scientific literature focused on surface electromyography (sEMG) and functional near-infrared spectroscopy (fNIRS), which have been described together and separately many times, presenting different possible applications, researchers have explored a diverse range of topics related to these advanced physiological measurement techniques. Howev...

Numerical methods are often a robust way to predict how external mechanical loads affect individual biological structures. Computational models of biological systems have been developed over the years, reaching high levels of detail, complexity, and precision. In this study, two cases were analysed, differing in the airbag operation; in the first,...

The authors present an algorithm for determining the stiffness of the bone tissue for individual ranges of bone density. The paper begins with the preparation and appropriate mechanical processing of samples from the bovine femur and their imaging using computed tomography and then processing DICOM files in the MIMICS system. During the processing...

Purpose: The aim of this study was to develop a method to implement muscle forces to a numerical model of a dummy and to evaluate the effect of muscle activation on driver behavior during a frontal collision. The authors focused on the forces acting at the knee, hip, and elbow joints. Methods: The authors carried out torque measurements in joint...

Citation: Dziubak, T.; Bąkała, L.; Dziubak, S.D.; Sybilski, K.; Tomaszewski, M. Experimental Abstract: Pollutant properties in intake air to internal combustion engines were analyzed. Mineral dust particles' influence on accelerated engine components' wear was discussed. Dust concentration values in the air under various operating conditions in tru...

Among the many commonly used diagnostic methods in dentistry are imaging methods using computer tomography (CT) and magnetic resonance imaging (MRI). Their very big advantage is the possibility of very precise imaging of tissues and bones, and thus verification of the presence of adverse changes. The disadvantage is that imaging is performed only f...

Adapting a car for a disable person involves adding additional equipment to compensate for the driver’s disability. During this process, the change in the driver’s position and kinematics and their impact on safety levels during crash is not considered. There is also a lack of studies in the literature on this problem. This paper describes a method...

Purpose The paper focuses on the numerical and experimental evaluation of the fluid flow inside chosen fragments of blood vessels. In the first stage of the study, the experimental tests were conducted using a research test stand, designed to be used in this evaluation. The study evaluated the blood flow through a silicone vessel with an implanted...

The use of bioresorbable polymers such as poly(lactic-co-glycolic acid) (PLGA) in coronary stents can hypothetically reduce the risk of complications (e.g., restenosis, thrombosis) after percutaneous coronary intervention. However, there is a need for a constitutive modeling strategy that combines the simplicity of implementation with strain rate d...

In the paper, an experimental and numerical flow through various kind of arteries is considered. The flow analyses are carried out on the research set up using Particle Image Velocimetry Method (PIV). The individual components of the research set up are discussed and the measurement methodology is explained. The work consists of two parts. The firs...

Purpose: The aim of this paper was the development of a finite element model of the soldier's head to assess injuries suffered by soldiers during blast under a light armoured vehicle. Methods: The application of a multibody wheeled armoured vehicle model, including the crew and their equipment, aenabled the researchers to analyse the most danger...

Purpose: Each year, many cars (in Poland approximately three hundred) are adopted for disabled driver, to enable them to drive the car independently. The purpose of the paper is to assess the key factors which significantly influence the disabled driver behavior during a frontal crash and have the biggest impact on the safety factors. Methods: To a...

Each year, many cars (in Poland approximately three hundred) are adopted for disabled driver, to enable them to drive the car independently. The purpose of the paper is to assess the key factors which significantly influence the disabled driver behavior during a frontal crash and have the biggest impact on the safety factors. Methods: To achieve th...

The paper is related to safety issues of disabled drivers. It concerns an implementation of muscle forces to numerical models which are used to simulate the driver behavior during car crash. The paper describes the preparation of numerical model which contains models of the quadrant of the car, 50th Dummy Hybrid III, full-scale flexible seat, speci...

The paper presents numerical and experimental burst pressure evaluation of the gas seamless hot-rolled steel pipe. The main goal was to estimate mechanical toughness of pipe wrapped with composite sleeve and verify selected sleeve thickness. The authors used a nonlinear explicit FE code with constitutive models which allows for steel and composite...

Abstract The main aim of the paper is to investigate and validate the behaviour of a pipeline in the conditions of excavator elements external interference. A number of experimental tests was conducted. Four different cases were taken into account: two geometries of intender with and without internal pressure. Discrete model of a tested pipe was de...

Presented paper is related to safety issues of disabled drivers. Based on results of numerical analyses the authors have described behaviour of disabled drivers who use special equipments during frontal crash. To perform analysis numerical model of MPV car (Multi-Purpose Vehicle) using 3D scanning was built. Adaptive devices in the form of knobs on...

The paper is related to safety issues of disabled drivers. Based on results of numerical analyses the authors have described behaviour of disabled drivers who use special equipments during frontal crash. To perform analysis numerical model of MPV car (MultiPurpose Vehicle) using 3D scanning was built. Adaptive devices in the form of knobs on the st...

During ongoing conflicts around the world, some of the most dangerous threats are rocket-propelled grenades. They are light, easy to use and cheap, and their penetration reaches 900 mm of armoured RHA steel. Therefore, in many experimental and numerical laboratories there are researches of different, in aspect of shape, dimensions and used material...

Bardzo dużo uwagi w publikacjach motoryzacyjnych [4] jest poświęcone prawidłowej pozycji kierowcy w trakcie jazdy. Jest to niezwykle ważne, gdyż wpływa na bezpieczeństwo samych kierowców, jak i innych uczestników dróg. Umożliwia skuteczniejszą obserwację drogi i otoczenia, szybszą reakcję na zmianę sytuacji na drodze oraz efektywniejsze manewrowani...

Liczba ludności na świecie przekroczyła siedem miliardów [9]. Niecałe 15% to osoby niepełnosprawne (ON), wśród których dużą grupę stanowią osoby niepełnosprawne ruchowo. Osoby te pomimo braku możliwości samodzielnego przemieszczania się, są bardzo często dobrze wykształcone i posiadają unikalne umiejętności potrzebne na rynku pracy. Niestety barier...

Rynek motoryzacyjny oferuje wiele rozwiązań wspomagających pracę kierowcy. Wśród dostępnych rozwiązań można odnaleźć dodatkowe oprzyrządowanie mocowane na kierownicę. Występuje ono w różnej formie, od prostych gałek po skomplikowane uchwyty profilowane pod indywidualne cechy geometryczne dłoni kierowcy. Mają one dwojakie zastosowanie. Po pierwsze b...

Celem niniejszego artykułu jest przedstawienie możliwości zastosowania techniki inżynierii odwrotnej w procesie modelowania 3D wnętrza różnego typu pojazdów samochodowych. W publikacji przedstawiono algorytm postępowania umożliwiający odwzorowanie geometrii wnętrza w sposób dyskretny za pomocą tzw. chmury punktów.Przetworzona do postaci ciągłej chm...

The aim of this publication is to show method of motion recording using F5 scanners developed by Mantis Vision company. In the paper the principle of scanners operation and practical guidelines about working with this kind of hardware are also included. The base of performed testing was implementation of additional device placed on the steering whe...

PL Jednym z kluczowych elementów każdej broni strzeleckiej determinującym jej właściwości użytkowe, tj. trwałość oraz niezawodność jest podzespół lufy. Wpływ obciążenia impulsu ciśnienia wysokotemperaturowych gazów prochowych o znacznej wartości, erozyjny charakter ich oddziaływania oraz wzajemna współpraca płaszcza pocisku z bruzdami przewodu lufy...

[PL] Przedstawiono wyniki modelowania wpływu oddziaływania fali ciśnienia pochodzącej od wybuchu miny lub IED na człowieka znajdującego się w lekkoopancerzonym transporterze kołowym. Otrzymane wyniki świadczą, że siły i przeciążenia działające na wybrane organy człowieka są tak duże, że mogą skutkować poważnymi obrażeniami. Analizy rozszerzono o ba...

Praca dotyczy próby określenia wpływu karbu wprowadzonego w geometrię membrany sterującej wartością osiąganego ciśnienia tak, aby sprawność miotania helowego układu miotającego była jak najwyższa. Wykonanie dużej ilości badań eksperymentalnych i numerycznych miało pomóc w doborze zarówno odpowiedniego rodzaju nacięcia, jak i grubości membrany tak,...

Energy absorbing composite elements, which can be used for the protection of people, vehicles and structures, have been widely investigated in recent years. Different kinds of materials (metals, composites, foams) and structures have been investigated. Many articles present the glass, carbon and aramid composites investigation results. The sleeve a...

During the operation of the UN and NATO forces in Africa and Asia it appeared that the equipment held and utilized by these organizations was not proof against the missiles being shot by rocket propelled grenades. The missiles utilized by the terrorist organizations belong to the first generation. They have a head with a shaped charge jet permittin...

In this paper the results of computer simulation of blast wave action arising from mine or IED explosion on wheeled light armoured vehicle will be presented. In the last years the NATO STANG 4569 international standard has been prepared. It describes the test standards concerning the ballistic resistance of vehicles not only to missiles but also to...

On the base of the observation of military actions in the world, especially Polish army participation in stabilisation missions, it can be observed the change of the way of the equipment application and conducting the actions. Nowadays the biggest threat is posed by the two types of ammunition. First of them includes any types of mines and improvis...

The armed forces involvement in stabilization operations conducted either in Europe (Kosovo) or in Africa (Iraq) or in Asia (Afghanistan) caused uncovering of weak points of the used equipment which was not constructed for the purpose of partisan war. This fact re sulted in equipment modernisation in the form of additional armouring and protection...

The article presents numerical simulation of interaction of a pressure wave coming from detonation of an improvised explosive device on the crew of the ligtharmoured wheeled vehicle. There was analysed one of the typical scenario, namely the explosion on the side of the vehicle, which the army deals with during the stabilization missions of differe...

Recent operations of Polish troops within the framework of peacemaking missions' uncovered weak points of the equipment used there. It turned out t hat one of the mo st significant threats is a shell equipped with a main shaped charge warhead used by partisan detachments. These can break even 900mm of shell-proof steel so it is very difficult to pr...