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Research on low density polyethylene (LDPE), recycled by advanced thermal analysis (DSC, TG)

100%

Siwczyk B. , Schlafka P. , Sąsiadek M. , Woźniak W.

International Journal of Applied Mechanics and Engineering

2023

tom Vol. 28, no. 2

113--124

This article presents the issue of recycling and maintaining the processing properties of materials made of plastics. For this purpose, samples from recycled, low-density, polyethylene were tested. The impact of the use of dyes and surface printing on the lifecycles of material and its quality was examined. For this purpose, an analysis was carried out using differential scanning calorimetry and thermos-gravimetry. It was found that the use of dyes may affect the quality of the material and increase the disposal costs of pre-used materials.

Studies on the Mechanical Properties of C45 Steel with Martensitic Structure after a High Tempering Process

88%

Woźniak W. , Sąsiadek M. , Jachowicz T. , Edl M. , Zając P.

Advances in Science and Technology. Research Journal

2022

tom Vol. 16, no 3

306--315

This article describes the studies of the mechanical properties of the martensitic structure of C45 steel, obtained as a result of heat treatment. This steel was subjected to high tempering, within the temperature range of 500 ÷ 700°C (every 50°C) and for various exposure times, from 15 minutes to 23 hours. Moreover, martensitic steel was subjected to tests by quenching at a temperature of 850°C for 20 minutes and then tempering it for 1 hour, within the temperature range of 50 ÷ 800°C (every 50°C). The resulting steel samples were subjected to strength tests, that is, to tensile and hardness tests and also to tests on the micro-structure. The results of these studies are presented and discussed, in detail, in terms of their practical application.

A New Effective Algorithm for Mechanical Assembly Sequence Planning

88%

Sąsiadek M. , Niedziela M. , Woźniak W. , Jachowicz T. , Mikušová N.

Advances in Science and Technology. Research Journal

2023

tom Vol. 17, no 5

56--67

This paper presents a new approach for searching the most favourable mechanical assembly sequence. The proposed method is described and its basic modules are presented. The concept is based on the assumption that the method should help the engineer in specifying the best assembly sequence with the short possible time calculation, taking into account the principles of design for assembly at an early stage of development of the product design. The algorithm for generating an accurate assembly sequence was described in detail and its application on real-life example was presented.

Rubber waste management

75%

Adamczyk J. , Gulba M. , Sąsiadek M. , Babirecki W. , Śliwa M. , Ociepa M.

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

2019

tom z. 137

7--21

The issue of rubber waste management, among others, due to the intensively developing branch of road transport, and hence a large number of manufactured car tyres, is particularly important for the sustainable development paradigm. Tyres are used not only in internal combustion cars, but also in electric cars, which are considered more ecological. Worn car tyres are not the only type of rubber waste; however, due to the scale of production, they occur most often. The article discusses laws related to this group of waste and methods of its recovery and recycling. All discussed methods of disposal of rubber waste have been characterised in terms of their advantages and disadvantages. An innovative, newly designed pyrolytic installation has also been discussed.