Wyniki wyszukiwania - BazTech

1

Innovative technology for making multilayerboards used in mobile systems of specialist transport

Lodwik D., Malesa W.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

|

2018

|

Vol. 7, No 1

29--35

EN

The paper presents the technology of production of multi-layer, large-size composite panels shaped by vacuum pressing. The advantages and possibilities of using composite panels as a modern material for the construction of special-purpose transport systems replacing traditional steel and aluminium are indicated. Examples of design solutions for mobile specialized transport systems are presented. For construction of walls, roofs, floors and doors, composite panels with specific strength, aesthetic and hygienic requirements were used. Thanks to the use of lightweight and durable composite panels and the technology used, their joining is resistant to extreme weather conditions, rigid, light and functional, free of all thermal bridges, thus we received mobile container systems with very good insulation parameters.

2

Influence of wind direction and speed on the transverse fall of the sprayed liquid for selected flat-stream nozzles

Lodwik D., Pietrzyk J.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

|

2018

|

Vol. 7, No 1

49--54

EN

The paper presents the assessment of the influence of wind direction and speed on the transverse fall of sprayed liquid for selected types of flat-stream nozzles. The measurements were carried out in laboratory conditions on an automated station equipped with a radial fan, speed and wind direction sensors, and a computer system for automatic acquisition and processing of measurement results. As criteria for the evaluation of the results of the conducted research on the quality of work of the tested nozzles, the values of the transverse nonuniformity index of CV liquid fall were assumed (with a maximum admissible value of 10%). The obtained results of laboratory tests were presented in the form of tables, and on their basis the dependencies of the CV index value on wind direction and wind speed were determined. On the basis of the obtained dependences, the assessment of individual nozzles was made due to the accepted criterion in the scope of the studied changes in wind speed and direction.

3

Influence of operational wear of selected nozzles on the unit outflow rate and transverse distribution of the sprayed liquid

Lodwik D., Pietrzyk J.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

|

2018

|

Vol. 7, No 1

43--48

EN

The article presents an assessment of the influence of the operational wear of selected types of pressure flat-stream nozzles on the quality of spraying. The results of the unit outflow rate and the CV index of the transverse distribution of the liquid for the field beam equipped with the tested type of nozzles were assumed as the measure of the grades. The tests were carried out for three types of nozzles with various operational wear. The measurements were carried out on automated spraying test stands. The tests of the unit intensity of the liquid outflow consisted in determining the conversion flow rate from the nozzles and comparing it with the nominal intensity. On the other hand, the transverse irregularities of the fall of sprayed liquid included the determination of the spray irregularity index for the nozzles at three different heights of the beam over the sprayed surface. On the basis of the analysis of the test results, it was found that the increase of the outflow rate for individual nozzles caused by their operation has a significant impact on the increase of the CV index of the spraying beam composed of the appropriate number of tested nozzles.

4

Analysis of the structure of the frame of a trailer for transport of bales of compressed straw in the aspect of minimalization of materials and energy consumption

Lodwik D., Pietrzyk J.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

|

2018

|

Vol. 7, No 1

37--42

EN

The article presents the development of a structure model and numerical analysis of the trailer frame assembly intended for transporting bales of compressed straw, which may be a potential source of cheap and ecological energy. The aim of the analysis was to minimize the use of construction materials (reduction of the total weight), simplification of manufacturing technology, and thus energy savings in the production and operation. The aforementioned aspects also play a key role in environmental protection issues. The digital models of frame assemblies were made and subjected to static strength analysis. The structure was evaluated in terms of strength, based on the calculations made using the finite element method. The distribution of simulation parameters in the area of the tested structure made it possible to partially optimize the load-bearing system of the trailer, due to the adopted decision criterion in the form of reduction of the total weight and simplification of the structure, while meeting the limitations resulting from the values of stresses, displacements, safety factor in the admissible range.

5

Innowacyjna technologia wytwarzania płyt wielowarstwowych stosowanych w mobilnych systemach transportu specjalistycznego

Lodwik D., Malesa W., Wiktorski Z.

Logistyka

|

2015

|

nr 4

4499--4508, CD2

PL

W pracy przedstawiono technologię wytwarzania wielowarstwowych, wielkogabarytowych płyt kompozytowy kształtowanych metodą prasowania próżniowego. Wskazano zalety i możliwości zastosowania płyt kompozytowych, jako nowoczesnego materiału do budowy systemów transportu specjalnego przeznaczenia zastępującego tradycyjne zabudowy stalowe i aluminiowe. Przedstawiono przykłady rozwiązań konstrukcyjnych mobilnych systemów transportu specjalistycznego. W budowie ścian, dachów, podłóg, drzwi użyto płyt kompozytowych o szczególnych wymaganiach wytrzymałościowych, estetycznych i higienicznych. Dzięki zastosowaniu lekkich i wytrzymałych płyt kompozytowych i zastosowanej technologii ich łączenia uzyskano wytrzymałe na skrajne warunki atmosferyczne, sztywne, lekkie i funkcjonalne pozbawione wszelkich mostków termicznych, o bardzo dobrych parametrach izolacyjnych mobilne systemy kontenerowe.

EN

At work shows the manufacturing technology of multi-layered, large size composite plate, shape with vacuum pressing method. Indicated advantages and opportunities to use of composite panels as modern material to build special transport systems to replace traditional steel and aluminum buildings. Shows examples of design solutions to mobile systems of specialist transport. In the constructions of walls, roofs, floors and doors used composite plate with special endurance esthetic and hygienic requirements. Thanks to the use of light and durable composite plate and technology to combine them to gained resistant to bad weather conditions, rigid, light and functional devoid of any thermal bridge with very good insulation parameters of mobile container systems.

6

Zautomatyzowne stanowisko do badań nierównomierności poprzecznej oprysku

Lodwik D., Pietrzyk J.

Journal of Research and Applications in Agricultural Engineering

|

2013

|

Vol. 58, nr 2

103--106

PL

Sformułowano założenia konstrukcyjne i funkcjonalne zautomatyzowanego stanowiska do badań jakości oprysku, według których je zbudowano. Stanowisko wraz z odpowiednim wyposażeniem pomiarowym, kontrolnym i sterującym charakteryzuje się dużymi możliwościami badawczymi, w których większość wykonywanych czynności została w pełni zautomatyzowana. Zastosowanie automatyzacji oraz własnych rozwiązań informatycznych umożliwiło znaczne skrócenie czasochłonności badań oraz zwiększenie dokładności uzyskiwanych wyników pomiarów.

EN

In the work it was formulated an assumption of structural and functional automated test station for transverse spray nonuniformity. This test station with a suitable measuring equipment, control and controlling is characterized by a high potential research where the majority of their operations have been fully automated. The use of automation and their possible solution greatly reduce time- consuming research and improve the accuracy of the results of measurements.

7

Wykorzystanie fotografii i komputerowej analizy obrazu do oceny poprzecznego opadu rozpylonej cieczy

Lodwik D., Pietrzyk J.

Journal of Research and Applications in Agricultural Engineering

|

2013

|

Vol. 58, nr 2

107--111

PL

Zaprezentowano wykorzystanie fotografii i komputerowej analizy obrazu w ocenie poprzecznego opadu rozpylonej cieczy na opryskiwanej powierzchni charakteryzowanej wskaźnikiem poprzecznej nierównomierności. Podstawowym celem zastosowania proponowanej metody w badaniach procesu oprysku i oceny jego jakości jest skrócenie czasu pomiarów, zwiększenie dokładności i powtarzalności uzyskiwanych wyników oraz możliwość automatyzacji sterowania i kontroli przebiegu badań. Istota proponowanej metody polega na rejestrowaniu w pamięci komputera obrazów naczyń pomiarowych wykonywanych cyfrowym aparatem fotograficznym o wysokiej rozdzielczości, a następnie ich obróbce w celu wyznaczenia objętości cieczy zgromadzonej w każdym naczyniu pomiarowym, co w konsekwencji prowadzi do uzyskania podstawowych charakterystyk jakościowych procesu oprysku. Proces badawczy z wykorzystaniem proponowanej metody realizowany jest na zautomatyzowanym stanowisku laboratoryjnym z wykorzystaniem specjalistycznego oprogramowania komputerowego. Wyniki wstępnych badań weryfikacyjnych potwierdziły przydatność opisywanej metody w badaniach i ocenie jakości oprysku w warunkach laboratoryjnych.

EN

This paper presents the use of photography and computer image analysis in the evaluation of transverse distribution of sprayed liquid on the surface characterized by means of the indicator of transverse non-uniformity. The primary purpose of the proposed method in researching spraying process and evaluation of its quality is to reduce the measurement time, to increase the accuracy and repeatability of the results obtained and the possibility of automation control and monitoring of studies. The essence of the proposed method consists in recording the memory of the measurement vessels taken with a digital camera of a high- resolution photo and then their treatment in order to determine the volume of liquid collected in each measurement vessel which in turn leads to a fundamental qualitative characteristics of the spray process. The research process using the proposed method is implemented on a laboratory automated test station using specialized computer software. Preliminary results confirmed the usefulness of the verification method described in the study and evaluation of the quality of the spray in the laboratory.