NR 2, 2017

Abstract: The paper describes selected elements of the process of designing a final drive of a tracked vehicle by a design engineer. The problems of designing are described with account taken of the search for a compromise between the often conflicting requirements. The most important structural units of the final drive are discussed, including: gears, bearings and the acting forces. Consideration is also given to the construction technology of the body and to the effect of gear accuracy grade on the structure and operating properties of the drive. Particular attention was drawn in the summary to the key elements of the design process that determine the correctness of the final structural form of the final drive.

Abstract. The paper presents a systematised approach to the selection of optimum viscosity of gear lubricant for drives of working machines used in civilian and military areas. Traditional literature procedures are characterised for determining the required oil viscosity according to the hydrodynamic theory (HD theory), and procedures based on the theory of elastohydrodynamic lubrication (EHD theory) are also presented. Nomograms developed by the authors allow to determine the dimensionless friction parameter resulting from the physical nature of the frictional contact in the lubricated gear meshing. The relationship between this parameter and the main types of tribological wear (abrasion, contact fatigue and seizure) of the gear teeth is demonstrated.

Abstract. The paper presents an analysis of the cases of the use of improvised explosive devices (IED) in 2011 where vehicles of the Polish Military Contingent in Afghanistan were involved. Methods of IED use and methods of their detonation are described. Conclusions refer to the implemented preventive measures, recommended modifications in the design of military vehicles and guidelines for their use.

Abstract. The article describes the principle of digital radiographic methods and research methodology. It also presents the capabilities of digital visualisation with regard to designing ballistic protection components. Results are presented of X-ray analyses of composite sandwich structures consisting of squeeze cast plastic worked elements and elastomeric compounds bound using innovative adhesive binding methods. Capabilities are also presented of qualitative analysis of steel welded joints for military applications.

Abstract. The article presents research carried out at OBRUM related to character recognition using an artificial neural network. The study concerned the recognition of Polish licence plate numbers of and was part of a project in the area of intelligent video analysis. The steps of licence number plate detection, segmentation, reconstruction and character recognition are discussed in detail. In conclusion, reference is made to the possibilities of using the research results in other applications.