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Krzysztof M. Maj

Summary

This is an attempt at outlining the philosophical and literary framework of Leopold Staff’s The Island. Rarely analyzed, the poem, made distinct by its universalist tone, does invite a fresh reading, especially one going beyond the narrow contexts and procedures of literary history. This approach is premised on the potential co-existence of the differentiae specificae of Staff’s poetic philosophy and the phenomena that are determined by it even though validated by a different discursive principle. Crucial to this analysis are two philosophical categories, mythical teleovitalism (a term coined by Jerzy Kwiatkowski and suited like no other to capture the specific quality of Staff’s poetry,) and a utopian aphasia (ie. a critical distance towards all utopias undercut by a longing for some form of utopian projection - an attitude that can be found across a wide range of classicist poetics). It is argued that these two categories have a key role in organizing the structure of the poem which deals with the submerged tensions between an appreciative and an unapproving view of a dream about ‘a mystery island’.

Open access

J. Piekło and M. Maj

Abstract

Rapid development of the methods of additive manufacturing (AM) introduces a number of changes to the design of foundry equipment. AM methods are of particular importance in the development of technology to make small lots of castings or single cast items of complex shapes, such as skeleton castings manufactured also by means of other technologies [1]. AM methods create the possibility of making single-use moulds, cores and wax patterns, as well as patterns made from plastics for repeated use. The development of AM techniques gives theoretically unlimited possibilities in the choice of the designed casting configurations. This fact can be used during the analysis of casting mechanical properties based on the methods of topology optimisation [2], [3], [17], when the said optimisation carried out at the initial stage of design ”matches” the shape of parts to the field of stresses or displacements caused by external load and fixing mode. The article discusses the possibilities and advantages that result from combining the new methods of shaping the casting endurance with AM technologies.

Open access

Krzysztof M. Maj

Summary

This article attempts to revise the categories of hypertexuality, multimodality and transmediality in the context of the idea of multi-layered narration in Jacek Dukaj’s essay Bibliomachia and his novel The Old Axolot: Hardware Dreams (e-book, 2015). The principal aim of this analysis is to map the broad spectrum of narrative techniques and experiments that augment and upgrade the traditional concept of the represented world to that of the cognitive narrative world. The latter term holds out a promise of getting a better grip on certain innovative narrative projects whose harbinger is The Old Axolot. The world-building strategy of this novel is twofold: it shapes its narrative world and the marketing campaign of its bilingual e-book edition. At the same time, the introduction of the Fictionary word game and an evolving concept of worldness makes The Old Axolot both an epitome of worldcentred narration, characteristic of both the culture of media convergence and the poetics of fantasy fiction, and a teaser, inviting us to re-examine our understanding of literature at the time of the World-building Turn.

Open access

M. Maj and W. Oliferuk

In the present paper the onset of plastic strain localization was determined using two independent methods based on strain and temperature field analysis. The strain field was obtained from markers displacement recorded using visible light camera. In the same time, on the other side of the specimen, the temperature field was determined by means of infrared camera. The objective of this work was to specify the conditions when the non-uniform temperature distribution can be properly used as the indicator of plastic strain localization. In order to attain the objective an analysis of strain and temperature fields for different deformation rates were performed. It has been shown, that for given experimental conditions, the displacement rate 2000 mm/min is a threshold, above which the non-uniform temperature distribution can be used as the indicator of plastic strain localization.

Open access

M. Maj

Abstract

In this study, the mechanical tests were carried out on ductile iron of EN-GJS-600-3 grade and on grey cast iron of EN-GJL-250 grade. The fatigue life was evaluated in a modified low-cycle fatigue test (MLCF), which enables the determination of parameters resulting from the Manson-Coffin-Morrow relationship. The qualitative and quantitative metallographic studies conducted by light microscopy on selected samples of ductile iron with spheroidal graphite and grey cast iron with lamellar graphite (showing only small variations in mechanical properties,) confirmed also small variations in the geometrical parameters of graphite related with its content and morphological features.

Open access

M. Maj, K. Pietrzak and J. Piekło

Abstract

The study describes the investigations of fatigue life carried out on selected grades of the G20Mn5 cast steel by two methods, i.e. the standard low-cycle fatigue test (LCF test) and modified low-cycle fatigue test (MLCF). The aim of these investigations was to verify the reliability of tests conducted by the novel method of MLCF [1, 2, 3].

Table 1 shows the results of mechanical tests carried out in accordance with the MLCF methodology on the G20Mn5 cast steel, while Figures 1a-b and 2 show the selected σ = f (ε) curves. Similar studies were carried out for the Mn-Ni cast steel [4].

Low-cycle fatigue tests (LCF) were carried out on an MTS 810 testing machine with control of force exerted on specimens whose dimensions were specified in [2].

Open access

S. Pysz, M. Maj and E. Czekaj

Abstract

Of great importance in the selection of materials for cast structures is keeping a proper balance between the mechanical and plastic properties, while preserving the relevant casting properties. This study has been devoted to an analysis of the choice and application of high-strength aluminium-based alloys maintaining sufficient level of casting properties. The high level of tensile strength (Rm > 500 MPa) matched with satisfactory elongation (A > 3%) is important because materials of this type are used for cast parts operating in the aerospace, automotive, and military industries. These beneficial relationships between the high tensile strength and toughness are relatively easy to obtain in the Al-Zn-Mg-Cu alloys subjected to plastic forming and proper heat treatment. In gravity cast products, on the other hand, whether poured into sand moulds or metal moulds (dies), obtaining this favourable combination of properties poses a number of research problems (mostly resulting from the alloy chemical composition) as well as technical and technological difficulties.

Open access

J. Piekło and M. Maj

Abstract

The article presents various aspects of the analysis of the state of stress in carbon block induced by the effect of temperature when a steel pin is connected to the block by pouring a shaped groove with cast iron. Changes in the temperature and state of stress in the block were examined by FEM (Abaqus program). The numerical model was validated by experimental measurements of pin deflection during pouring of the groove with cast iron.

Open access

M. Maj and K. Pietrzak

Abstract

This study discloses the characteristic features of the modified low-cycle fatigue test used for the determination of the mechanical properties of two types of cast iron, i.e. EN-GJL-250 and EN-GJS-600-3. For selected materials, metallographic studies were also conducted in the range of light microscopy and scanning microscopy.

Open access

M. Maj, J. Werrtz and J. Piekło

Abstract

• Theory and practice of environmental protection in the case of foundries in Europe and Asia • Experience resulting from the cooperation with the foundries in a few European countries, China and India • Phenomena and factors affecting the pollution of the natural environment and the implementation of measures aiming at the environmental protection. Every specialist dealing with foundry processes and their impact on environmental pollution must have encountered in their professional careers numerous situations in which the theory of environmental protection confronts the stark reality. The discrepancy between theory and practice can particularly be noticed in foundry engineering in developing countries where the contrasts between different countries and casting plants are extremely striking. The comparison of working conditions in European and Asian foundries provides a vast scope for further observations and analyses. Environmental protection seems not only a concern of manufacturers of castings, but also of their customers whose opinion exerts a significant influence on both the acceptability of working conditions and on the approach to environmental pollution adopted in metal casting industry. The article presents a number of examples of various outlooks on environmental issues in foundries manufacturing a wide range of cast steel and cast iron castings, where different technologies and production processes are applied.