Tribological problems in shaft hoist ropes wear process

Styp-Rekowski, M.; Mańka, Eugeniusz; Matuszewski, M.; Madej, Monika; Ozimina, Dariusz

doi:10.1108/ilt-01-2014-0004

Cited by 16 publications

(13 citation statements)

References 2 publications

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“…The created system of research of the effectiveness of solar panels with tracker and stationary panel placement system enables to automatically visualize parameters, perform data processing in real time, form databases and perform a comparative analysis of their operational efficiency. It also allows to remotely track settings that are fixed from anywhere in the world [9][10][11]. The developed system makes it possible to compare the efficiency of solar panels.…”

Section: Presenting Main Materialsmentioning

confidence: 99%

Exploring the effectiveness of using devices that follow the Sun

et al. 2019

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The article is devoted to the study of the effectiveness of devices that follow the Sun. For this purpose, the construction of a two-axes tracker with an automatic system of steering the solar panels on azimuth during the light period of the day and with the possibility of manually adjusting the angle of rotation of the solar panels on the zenith, depending on the season is designed. For the proposed construction, the calculation of the angles of the zenith is made and the optimal angles are selected for manual adjustment of the seasonal positions of the system. The photo modules, which are installed stationary on the developed tracker system, are selected. Structural and electrical principle diagram of the stand was developed for determining the efficiency of solar power station, equipment was selected and its manufacture made. A solar power station monitoring system has been developed, which enables to automatically visualize parameters, perform data processing in real time, create databases and perform a comparative analysis of their operational efficiency in an automatic mode. Experimental researches have been carried out on determination of the generated electric energy by static and dynamic solar power stations, on the basis of which the efficiency of tracker systems of rotation of solar panels is confirmed. The use of dynamic systems compared to static allows to increase the production of electricity by 33% under the same conditions. But with poor illumination of the panels (rain, fog, cloudy weather), the tracker's effectiveness decreases and it does not exaggerate 5% when fully covered with the sky. Therefore, the use of tracking systems in the absence of direct sunlight on the surface of photo modules is not feasible.

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Section: Presenting Main Materialsmentioning

confidence: 99%

Exploring the effectiveness of using devices that follow the Sun

et al. 2019

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“…They are characterized by continuous changes during the manufacturing and operating process and thus describe well the current state of the surface layer. During the cooperation of elements in a friction pair, their surface is in the interaction and therefore the geometric surface structure has a significant impact on functional features and tribological characteristics [11,[13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Assessment of friction pair elements condition based on changes in the geometric surface structure isotropicity degree

et al. 2019

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This paper regards the possibility of using the degree of the surface isotropicity to assess the condition of the surface layer friction pair elements. The analysis is based on certain changes in operational and technological surface layer. The methods of constituting the surface layer have been characterized due to the features of geometric surface structure as well as the problem of assessing the condition of surface in terms of functional features and tribological characteristics. The evaluation of the occurring changes in the surface layer have been conducted by performing tribological tests and for descript condition of surfaces the degree of surface isotropicity and weight loss of specimens have been adopted. Whereas the assessment of technological state of the surface layer has been carried out for the surface after its coating. Based on the analysis, it has been found that the use for assessment the condition of surface layer and the degree of the surface isotropicity are useful and it is an alternative way or supplement to classical adoption of a properly selected set of roughness parameters to evaluate the potential functional characteristics of friction couples surfaces.

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“…It focuses on the problems of perception, psycho-physics, decision making and other aspects involved in the information processing. Sometimes it applies to such elements as: equipment, physical environment, tasks and persons who perform the work [8][9][10]. A system 'human -machine" is a relatively closed system, i.e.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the impact of an operator’s workstation on the safety of functioning of selected road transport systems

Muślewski

2019

MATEC Web Conf.

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Modern times are characterized by fast economic and social development. However, not all spheres of life have developed in a sustainable manner, for example some elements of anthropotechnical systems are still far from being sustainable. This results in low safety level of these systems involving high risk of injury or death caused by road accidents. Transport systems of the type Human-Machine-Environment <H-M-E>, where undesired events are caused by human behavior, belong to such systems. The author of this study has addressed the issues connected with the impact of man-made objects on their operation safety. The objects in question are selected transport systems and the study subject is assessment of the equipment operator’s behavior. The main goal of this study is to provide assessment and analysis of the impact of transport means ergonomics on the quality of transport services they provide. The research object are delivery trucks with the maximum vehicle weight up to 3.5t. The first part of the study contains identification of the factors and threats which affect functioning of transport systems. Further, ergonomics criterion is defined and the factors affecting ergonomics of selected transport means are provided. A questionnaire survey was performed with participation of professional drivers who were asked to identify the factors which have an adverse effect on the safety of the transport process as well as factors that increase the drivers’ comfort of work. Basing on this, an analysis of the results was performed and negative aspects involved in driving ergonomics were identified.

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Tribological problems in shaft hoist ropes wear process

Cited by 16 publications

References 2 publications

Exploring the effectiveness of using devices that follow the Sun

Exploring the effectiveness of using devices that follow the Sun

Assessment of friction pair elements condition based on changes in the geometric surface structure isotropicity degree

Analysis of the impact of an operator’s workstation on the safety of functioning of selected road transport systems

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