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D. Wilk-Kołodziejczyk, A.S. Kluska-Nawarecka, K. Regulski, W. Adrian and K. Jaśkowiec

Abstract

The aim of this work was to propose a methodology supporting the task of collecting the comparative data on studies of the mechanical properties of ADI. Collecting of research data is an important step in the process of finding the optimum design solutions for newly made products - experimental data allow us properly calibrate the manufacturing process of ADI to let the final product achieve the required properties. Parameters of the ADI production process, i.e. the time and temperature of austenitising and austempering, as well as the alloying elements added to ductile iron affect the ADI properties. The design process can use research data collected, among others, from the Web. As stated in the article, the process of data acquisition can be supported by semantic technologies, including ontologies which are descriptive logic formalism.

Open access

B. Pawłowski, P. Bała and R. Dziurka

Abstract

Dilatometry is the most commonly method of producing CCT diagrams and analyzing phase transformations during cooling (as well as transformations during heating) and it permits the real-time monitoring of the extent of reaction in terms of dimensional changes due to phase transformation. All modern dilatometers are fitted with computerised systems which collect dimensional change signals versus temperature to plot a dilatometric curve and also to calculate and plot the derivative of the relative dimensional change with respect to temperature. Unfortunately, elaborated by dilatometers manufacturers software, in many cases could lead to wrong interpretation of phase transformations during cooling.

Open access

R. Kaczmarek and R. Krawczyk

Abstract

Basic factors which have an influence on conducting manual ultrasonic testing of joints in the welded constructions are presented in the following article. These factors are specified on the base of the guidelines referring to conditions and methods of carrying out examinations which are currently in force in the following standards PN-EN ISO 17640 and PN-EN ISO 22825. Due to the vastness of subject of ultrasonic testing the main aim of the following article is to collect all important information which relates to design and manufacture of constructions and has a key influence on the following examinations.

Open access

Xuebang Wu and Changsong Liu

Abstract

The general trend in soft matter is to study systems of increasing complexity covering a wide range in time and frequency. Mechanical spectroscopy is a powerful tool for understanding the structure and relaxation dynamics of these materials over a large temperature range and frequency scale. In this work, we collect a few recent applications using low-frequency mechanical spectroscopy for elucidating the structural changes and relaxation dynamics in soft matter, largely based on the author’s group. We illustrate the potential of mechanical spectroscopy with three kinds of soft materials: colloids, polymers and granular systems. Examples include structural changes in colloids, segmental relaxations in amorphous polymers, and resonant dissipation of grain chains in three-dimensional media. The present work shows that mechanical spectroscopy has been applied as a necessary and complementary tool to study the dynamics of such complex systems.

Open access

R. Kowalik

, K. Mech, P.R. Żabiński, Electrochemical deposition of CdS thin films from acid solutions. Rudyi Metale Nieżelazne 57 (9), 586-591 (2012). [25] M.S. Kazacos, B. Miller, Studies in selenious acid reduction and CdSe film deposition. Journal of The Electrochemical Society 127 (4), 869-873 (1980). [26] G. Pezzatini, F. Loglio, M. Innocenti, M.L. Foresti, Selenium(IV) electrochemistry on silver: A combined electrochemical quartz-crystal microbalance and cyclic voltammetric investigation. Collect Czech Chem C 68 (9), 1579-1595 (2003). [27] R. Kowalik, K