Technical Transactions iss. 26. Mechanics iss. 4-M

Technical Transactions iss. 26. Mechanics iss. 4-M

Type: Collection of magazine numbers
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Collection items (16)



The poles method for second-order linear time-varying systems

Siwczyński, Maciej, Jaraczewski, Marcin
Article
2015
In dynamic linear systems described by differential equations with constant parameters, the poles of the rational function (transfer function of the system) play an important role. This article attempts to expand the poles concept in a situation where the system is described by the second-order linear system with timevarying parameters. It then introduces the concept of characteristic equations and time-dependent poles.

Rapid e-learning tools on the Moodle platform

Walasek, Tomasz A., Kucharczyk, Zygmunt, Szewczyk, Krzysztof, Morawska-Walasek, Dorota
Article
2015
One of the most frequently highlighted problems regarding online teaching reported by teachers is the time and effort required to prepare and regularly update attractive e-content. This is particularly true for multimedia content. On the other hand, the problem often reported by students is the low aesthetic value and teachers’ failure to produce materials that students deem to be aesthetically attractive. This article presents some suggestions on possible ways to control and manage the visual side of e-content.

Innovative approach to postgraduate education in the field of fluid power technology

Pobędza, Janusz, Guzowski, Artur
Article
2015
The article presents the developed, innovative model of postgraduate education in the area of fluid drive and control technology, launched in the Cracow University of Technology. The program of postgraduate studies was elaborated in accordance with the CETOP guidelines. Characteristics of education on hydraulic and pneumatic systems are presented together with the proposed model of studies and its innovative components.

Investigations of strength and leak tightness of wave-ring gaskets

Trojnacki, Andrzej, Szybiński, Bogdan
Article
2015
The paper deals with stress-strain analysis and estimation of leak tightness of wave-ring gaskets. The investigations are carried out using the simplified analytical approach. A cylindrical shell of constant mean thickness is introduced to simulate the gasket. It is assumed that the shell is simply supported at the inner surface of the seat. The influence of certain geometric and assembly parameters on the strength and leak tightness of the closure is analytically investigated. The results are presented in dimensionless variables in order to generalise the conclusions. The analytical solution is verified by FEM calculations and compared with the experimental results.

The influence of molibdenum on corrosion resistance of sintered austenitic stainless steels

Szewczyk-Nykiel, Aneta
Article
2015
Molybdenum was introduced into sintered austenitic stainless steels to improve their corrosion resistance. The influence of different Mo contents on the pitting corrosion resistance of AISI 304L and 316L steels in 0.1 M sodium chloride solution has been investigated. The corrosion behaviour was evaluated by potentiodynamic polarisation method. Sintered Mo-containing 304L steel is less prone to pitting corrosion in environment containing chlorides than 316L with Mo addition. The introduction of molybdenum to 304L steel resulted in an improvement of corrosion resistance. This steel exhibits the highest value of polarisation resistance as well as the lowest value of corrosion rate.

The Moodle platform’s Lesson module as an example of effective e-learning

Hernik, Szymon
Article
2015
In the era of distance communication, areas such as education can try to find a place in the digital world. The possibility of distance learning, due to widespread access to the Internet, can provide valuable educational activities without the necessity for the student to leave their home. A perfect example of this approach is the module ‘Lesson’ contained within the Moodle platform. This allows not only the opportunity to present attractive knowledge but also the possibility for student evaluation on an ongoing basis whilst they are still learning. This functionality is one of the most dynamic components of the platform – it enables two-way interactivity between teacher and student.

Power engineering – the Ministry-commissioned course of study carried out at Czestochowa University of Technology from 2012 to 2015

Dużyński, Adam
Article
2015
This study discusses the progress of the engineers’ studies in the Ministry-commissioned Power Engineering course conducted in the Faculty of Mechanical Engineering and Computer Science at Czestochowa University of Technology (FMECS, CUT) in the period 2012–2015.

Evaluation of the suitability of study visits to external companies as a strategy for familiarising students with a business environment

Frączek, Ewa, Plichta, Anna, Plichta, Piotr, Wiszniewska, Danuta
Article
2015
This paper presents the results of the evaluation of several study visits. On that basis, it discusses the issue of the suitability of study visits in external companies for the wider process of familiarising students with the business and market environment.

The possibility of using multi-criteria methods as innovative tools for supporting postgraduate education

Korniejenko, Kinga
Article
2015
The aim of the article is to analyse the possibility of using multi-criteria methods for support in planning the postgraduate program, their implementation and their evaluation. Multi-criteria methods, which are used to support the decision-making process, are a response to the complexity of contemporary problems, including uncertainty, incomplete data and changing environment. One of these issues is matching the postgraduate program to the current requirements of potential students. The research methods used in this article are a critical analysis of literary sources and a case study of the ‘PIT Mobile postgraduate studies in collaboration with industry’ project, financed by the European Social Fund.