<abstract xmlns="http://www.w3.org/1999/xhtml">The tribological properties of the nitride layer applied to the low-alloyed steel were investigated in this research. Experimental work included determination if the chemical composition, wear resistance, Rockwell, Vickers and nano-indentation tests, both of the substrate material – the low-alloyed steel and the deposited nitride layer. From the results obtained in those experiments authors concluded that applying the nitride layer does not significantly improve the tribological properties of the tested lowalloyed steel samples, thus this process is not recommended for achieving that purpose.</abstract>

Tribological behavior of low-alloyed steel after nitriding

<abstract xmlns="http://www.w3.org/1999/xhtml">Due to the fact that the number of natural disasters in the world has increased in recent years, experts note that climate change is the cause. As a consequence of the nature of the needs to improve the fuel and energy complex in the countries in world. This solution could be solar energy and similar energy sources. The paper presents the classification of energy-efficient houses proposed by international standards and its critical analysis. Emphasis is placed on the problem of improving solar collectors integrated into the construction of buildings. The paper presents the temperature characteristics of an experimental solar collector. For the experimental solar collector combined with the translucent facade of the building, thermal characteristics are set, in particular, such as thermal capacity and thermal efficiency.</abstract>

Department of Building Processes Engineering

Department of Heat and Gas Supply and Ventilation

Solar collectors integrated into transparent facades

<abstract xmlns="http://www.w3.org/1999/xhtml">The parameters of high-grade steel are influenced by a combination of factors, including chemical composition and production technology. The impurity content is also a key determinant of the quality of high-grade steel. Inclusions may also play an important role, subject to their type and shape. Inclusions may increase the strength of steel by inhibiting the development of micro-cracks. The analyzed material was one grade of medium-carbon structural steel. The study was performed on 6 heats produced in an industrial plant in 140 ton electric furnaces. The experimental variants were compared in view of the five heat treatment options. The results were presented to account for the correlations between the fatigue strength coefficient during rotary bending, the diameter of and spacing between impurities. The relationship between the fatigue strength and hardness of high-grade steel vs. the quotient of the diameter of impurities and the spacing between impurities was determined. The proposed equations contribute to the existing knowledge base of practices impact of impurities with various diameters and spacing between non-metallic inclusion on fatigue strength.</abstract>

Influence of inclusions on bending fatigue strength coefficient the medium carbon steel melted in an electric furnace

<abstract xmlns="http://www.w3.org/1999/xhtml">Hard machining is a process which has become highly recommended in manufacturing industry to replace grinding and perform production. The important technological parameters that determine this process are tool wear, machined surface roughness, cutting force and morphology of the removed chip. In this work, an attempt has been made to analyse the morphology and form of chip removed during turning of hardened steel AISI 1045 (40HRC) with mixed ceramic tool type CC650. Using a Taguchi plan L9, whose factors are cutting speed and feed rate with three levels for each. Macroscopic and microscopic results of chip morphology were correlated with these two cutting parameters additional to surface roughness. Sufficient experimental results were obtained using the mixed ceramic tool when turning of hardened steel AISI 1045 (40HRC) at high cutting speeds. Roughness of machined surface confirmed that it is influenced by feed rate. Chips show a sawtooth shape for all combinations of the experimental plan used. The chip form changed with cutting parameters variation and given an important indicator of suraface quality for industriel. Having the indicators on the surface quality from simple control of chip without stopping machining give an important advantage in order to maximize production and reduce costs.</abstract>

Relationship between surface roughness and chip morphology when turning hardened steel

<abstract xmlns="http://www.w3.org/1999/xhtml">The article presents a case study; an analysis and a proposal concerning the improvement of the conditions of occupational health and safety in a reloading terminal of a logistics company. The specificity of the workplace means that employees are exposed to a permanent overload of the musculoskeletal system, which is determined in the process of transporting loads of significant mass. After the analysis, the introduction of changes in the conditions of safe and hygienic work at selected positions was suggested. Qualitative research using the observation method, as well as a quantitative approach after introducing changes in working conditions show a change in employees’ attitudes to their work, as well as their higher performance. After a year of operation of the proposed and introduced changes, it was decided to introduce them for new employees and external companies working at the transshipment terminal.</abstract>

Selected problems of managing work safety - case study

<abstract xmlns="http://www.w3.org/1999/xhtml">In the past, it was enough for the airport to have a runway and a modest terminal. The development of air traffic has also increased customer requirements (passengers, airlines, etc.), which has affected the need for airport infrastructure development. Throughout the world, passenger terminals have been built, many of which, according to architectural solutions, represent works of art. The design and functionality are tailored in such a way as to enable longer stay and meet the requirements of passengers and other users. Content and concept offer solutions that airport operators provide for additional revenue. One part of the content and service is offered in passenger terminal buildings, while the other part is provided outside them, whether in or outside the airport. Part of this content is offered by Airport City (AC). AC phenomenon represents the integration of infrastructure, superstructures, information and operations. It represents a part of the Supply Chain (SC) and usually includes facilities such as: passenger terminals, runways and other airport activities such as: ground handling, logistics, office space, shops, hotels, etc. In this paper, authors use a method of systems theory, a modeling method and a comparative method as a general and some specific scientific methods of cognition, to researching the problem to which different AC models and their structure can contribute to the optimal SC flow as its essential part and bring the results of the AC phenomenon as a part of the SC.</abstract>

Ltd & Department of Sustainable Mobility and Logistic

Department of Sustainable Mobility and Logistic

Faculty of Transport and Traffic Sciences

The role and position of Airport City in the Supply Chain

<abstract xmlns="http://www.w3.org/1999/xhtml">The multitude of concepts and methods of management and control related to the word “visual” in the area of production and quality management may cause difficulties with their perception, proper understanding and use of these terms by researchers from various backgrounds (not necessarily related to production) and countries, including Poland. In particular, the noticed inaccuracies in the use of terms with the word “visual” concern such terms as visual: management, control, inspection, and testing, where, for example, in the Polish language the first three different terms in English are named with the same phrase, which sometimes causes some confusion. The aim of the article was an attempt to distinguish, sometimes “troublesome” definitions, to indicate the area of their application, to define possible relations between them, which is a peculiar novelty. The article is an analysis of the literature related to these concepts, systematizes the types of visual concepts and methods in the area of production and quality. It defines in what context the indicated terms should be used by researchers and what is the relationship between them, and under what conditions they can be used separately or jointly. The article is an attempt to indicating and analysis of the interrelation between concepts in which the word “visual” appears concerning production practice. Concepts visual: management, control, inspection, and testing, as the author proves in the article, they should be translated into English with due diligence, due to the differences between them. It has been shown that there is a strong relationship between type definition pairs as visual management &amp; visual control and visual inspection &amp; visual testing, where it is not a mistake to use them interchangeably, and cases, where all these concepts can intertwine, are also given.</abstract>

Indicating and analysis the interrelation between terms – visual: management, control, inspection and testing

<abstract xmlns="http://www.w3.org/1999/xhtml">This work is about the effect of fine aggregate properties on the physicomechanical characteristics of hardened mortars. The results indicated that the increase in grain-size of fine aggregate increases the bulk density of hardened mortars. The strength of mortars including limestone fine aggregate is higher than that of the silica-sand. Regardless of the aggregate origin, the strength of the mortars with well-graded fine aggregate for all grain-size is greater than of with uniform fine aggregate. This indicates that grading of fine aggregate increases the strength, while uniformity decreases it.The strength of mortars with well-graded fine aggregate increases as the grain-size increases. Regardless of the aggregate origin, the strength of mortars with uniform fine aggregate increases with increasing grain-size until the grain-size range of 425-1000 µm, but after this range it decreases with increasing grain-size. The thermal conductivity increases with the increase in the grain-size. Notedly, the relationship between thermal conductivity and maximum grain-size of well-graded fine aggregate has a very strong positive correlation. Further, the thermal conductivity value for mortars formed with uniform fine limestone aggregate is minimum at the grain-size range of 425-1000 µm, while it has greatest values close together from this grain-size range</abstract>

The Effect of Gradation and Grain-Size Properties of Fine Aggregate on the Building Mortars

<abstract xmlns="http://www.w3.org/1999/xhtml">In the recent years, additive manufacturing became an interesting topic in many fields due to the ease of manufacturing complex objects. However, it is impossible to determine the mechanical properties of any additive manufacturing parts without testing them. In this work, the mechanical properties with focus on ultimate tensile strength and modulus of elasticity of 3D printed acrylonitrile butadi-ene styrene (ABS) specimens were investigated. The tensile tests were carried using Zwick Z005 loading machine with a capacity of 5KN according to the American Society for Testing and Materials (ASTM) D638 standard test methods for tensile properties of plastics. The aim of this study is to investigate the influence of printing direction on the mechanical properties of the printed specimens. Thus, for each printing direction ( and ), five specimens were printed. Tensile testing of the 3D printed ABS specimens showed that the printing direction made the strongest specimen at an ultimate tensile strength of 22 MPa while at printing direction it showed 12 MPa. No influence on the modulus of elasticity was noticed. The experimental results are presented in the manuscript.</abstract>

Influence of printing direction on 3D printed ABS specimens

AHEAD OF PRINT

Volume 30 (2024): Issue 1 (March 2024)

Volume 29 (2023): Issue 4 (December 2023)

Volume 29 (2023): Issue 3 (September 2023)

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Volume 29 (2023): Issue 1 (March 2023)

Volume 28 (2022): Issue 4 (December 2022)

Volume 28 (2022): Issue 3 (September 2022)

Volume 28 (2022): Issue 2 (June 2022)

Volume 28 (2022): Issue 1 (March 2022)

Volume 27 (2021): Issue 4 (December 2021)

Volume 27 (2021): Issue 3 (September 2021)

Volume 27 (2021): Issue 2 (June 2021)

Volume 27 (2021): Issue 1 (March 2021)

Volume 26 (2020): Issue 4 (December 2020)

Volume 26 (2020): Issue 3 (September 2020)

Volume 26 (2020): Issue 2 (June 2020)

Volume 26 (2020): Issue 1 (March 2020)

Volume 25 (2019): Issue 25 (December 2019)

Volume 24 (2019): Issue 24 (September 2019)

Volume 23 (2019): Issue 23 (June 2019)

Volume 22 (2019): Issue 22 (March 2019)

Volume 21 (2018): Issue 21 (December 2018)

Volume 20 (2018): Issue 20 (September 2018)

Volume 19 (2018): Issue 19 (June 2018)

Volume 18 (2018): Issue 18 (March 2018)

Volume 17 (2017): Issue 17 (December 2017)

Volume 16 (2017): Issue 16 (September 2017)

Volume 15 (2017): Issue 15 (June 2017)

Volume 14 (2017): Issue 14 (March 2017)

Production Engineering Archives

 The Journal of "Production Engineering Archives" has been published by the Publishing Office of Quality and Production Managers Association since 2013 as a quarterly. It is an international peer-reviewed, open access journal published four times per year only in the English language. It is published both in printed and electronic versions.  The works papers which are published in the PEA Journal are devoted to production engineering, quality of materials and technology. The PEA journal accepts review articles, original scientific articles, short communications, case studies. All articles published in Production Engineering Archives are permanently free for everyone to read and download. The journal is on the list of scientific journals of the Polish Ministry of Science and Higher Education. Presently (since 2013) each paper is awarded with 5 points (the list B, pos. 2039).   The Journal "Production Engineering Archives" is the international platform of the scientific exchange within the theory of the production engineering systems organizing, management and functioning theory. The area of interest focuses on the following systems: production, quality, total productive maintenance, materials engineering, environmental protection, occupational health and safety, human resources management including elements of innovation and continuous improvement. Published works include technical, economic and social issues. The articles are published in English. Each manuscript submitted for publication in the PEA journal is reviewed (double blind peer-review). All works published in PEA are available on the Journal's website. The members of the Scientific Committee are eminent specialists in the field of production engineering, materials engineering, quality and safety management, human resources, who are working in Poland and abroad. ScopeSubject areas, suitable for publication, include the following fields:    Production engineering  Quality and production management  Improvement of production processes  Safety system  Quality and improvement in materials engineering  TPM (Total Productive Maintenance)  Advanced technology  Intellectual potential management in production engineering   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 