Peter Prakash F., Muthukannan Duraiselvam, Natarajan S. and Kannan Ganesa Balamurugan
This paper aims to investigate the effect of laser surface texturing (LST) on the wear behavior of C-263 nickel-based superalloy and to identify the optimum wear operating…
Abstract
Purpose
This paper aims to investigate the effect of laser surface texturing (LST) on the wear behavior of C-263 nickel-based superalloy and to identify the optimum wear operating condition.
Design/methodology/approach
C-263 nickel-based superalloy was selected as substrate material and pico-second Nd-YAG laser was used to fabricate the waviness groove texture on their surface. Wear experiments were designed based on Box-Bhenken design with three factors of sliding velocity, sliding distance and applied load. Wear experiments were performed using pin on disc tribometer. Morphologies of textures and worn-out surfaces were evaluated by scanning electron microscopy and energy dispersive spectroscopy. Surface topographies and surface roughness of the textures were evaluated by weight light interferometry. The response surface methodology was adopted to identify the optimum wear operating condition and ANOVA to identify the significant factors.
Findings
LST improves the wear resistance of C-263 nickel-based superalloy by appeoximately 82 per cent. Higher wear rate occurs at maximum values of all operating conditions, and applied load affects the coefficient of friction. Applied load significantly affects the wear rate of un-textured specimen. The interaction of sliding velocity and applied load also affects the wear rate of textured specimens. The optimum parameters to get minimum wear rate for un-textured specimens are 1.5 m/s sliding velocity, 725 m sliding distance and 31 N of applied load. For textured specimens, the optimum values are 1.5 m/s sliding distance, 500 m sliding distance and 40 N of the applied load.
Originality/value
Literature on laser texturing on nickel-based superalloy is very scarce. Specifically, the effect of laser texturing on wear behavior of the nickel-based superalloy C-263 alloy is not yet reported.
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Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some…
Abstract
Aim of the present monograph is the economic analysis of the role of MNEs regarding globalisation and digital economy and in parallel there is a reference and examination of some legal aspects concerning MNEs, cyberspace and e‐commerce as the means of expression of the digital economy. The whole effort of the author is focused on the examination of various aspects of MNEs and their impact upon globalisation and vice versa and how and if we are moving towards a global digital economy.
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Through a survey of 200 employees working in five of the thirty establishments analysed in previous research about the microeconomic effects of reducing the working time (Cahier…
Abstract
Through a survey of 200 employees working in five of the thirty establishments analysed in previous research about the microeconomic effects of reducing the working time (Cahier 25), the consequences on employees of such a reduction can be assessed; and relevant attitudes and aspirations better known.
This chapter complements the one that appeared as “History of the AIB Fellows: 1975–2008” in Volume 14 of this series (International Business Scholarship: AIB Fellows on the First…
Abstract
This chapter complements the one that appeared as “History of the AIB Fellows: 1975–2008” in Volume 14 of this series (International Business Scholarship: AIB Fellows on the First 50 Years and Beyond, Jean J. Boddewyn, Editor). It traces what happened under the deanship of Alan Rugman (2011–2014) who took many initiatives reported here while his death in July 2014 generated trenchant, funny, and loving comments from more than half of the AIB Fellows. The lives and contributions of many other major international business scholars who passed away from 2008 to 2014 are also evoked here: Endel Kolde, Lee Nehrt, Howard Perlmutter, Stefan Robock, John Ryans, Vern Terpstra, and Daniel Van Den Bulcke.
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Maxine Berg, Timothy Davies, Meike Fellinger, Felicia Gottmann, Hanna Hodacs and Chris Nierstrasz
Our research is about the trade in material goods from Asia to Europe over this period, and its impact on Europe’s consumer and industrial cultures. It entails a comparative study…
Abstract
Our research is about the trade in material goods from Asia to Europe over this period, and its impact on Europe’s consumer and industrial cultures. It entails a comparative study of Europe’s East India Companies and the private trade from Asia over the period. The commodities trade was heavily dependent on private trade. The historiography to date has left a blind spot in this area, concentrating instead on corruption and malfeasance. Taking a global history approach we investigate the trade in specific consumer goods in many qualities and varieties that linked merchant communities and stimulated information flows. We set out how private trade functioned alongside and in connection with the various European East India companies; we investigate how this changed over time, how it drew on the Company infrastructure, and how it took the risks and developed new and niche markets for specific Asian commodities that the Companies could not sustain.
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Kristoffer Edelgaard Christensen
Against the grain of the paradigmatic postcolonial analytics of the colonial state, this chapter presents a non-dichotomous comparison of two regimes within the late 18th century…
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Against the grain of the paradigmatic postcolonial analytics of the colonial state, this chapter presents a non-dichotomous comparison of two regimes within the late 18th century Danish empire, which are commonly presumed to be of essentially different kinds – namely the colonial state in Tranquebar in South East India and the metropolitan government of rural Danish society. By focusing, firstly, on practices of policing and, secondly, on the general technology of power that targeted these significantly different socio-political spheres, it is argued that these regimes were governing according to similar strategies: seeking, on one hand, to deploy societal mechanisms of self-regulation and, on the other, to provide a balance and order to the otherwise chaotic forces of the population. On the basis of a Foucauldian vocabulary of government, it is thereby argued that colonialism, at this time and place, had not yet clearly constituted itself as a particular form of rule.
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The transformations in the existing forms of governmentality and power regimes are deeply rooted within the political economy of advanced neoliberalism, having profound…
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The transformations in the existing forms of governmentality and power regimes are deeply rooted within the political economy of advanced neoliberalism, having profound implications in the governance matrix. The new rationalities and instrumentalities of governance involve ‘governing without government’ (Rhodes, 1996) following the delegitimisation and deconstruction of the Keynesian Welfare State and the gradual enactment of what Jessop (2002) calls the Schumpeterian Competition State. This chapter throws open the play field for competing standpoints on governing the mega corporates. Various theorists consider that there is emptiness within the existing global regulatory armoury concerning the operational activities of TNCs. The convolution of ‘steering’ in this poly-centred, globalised societies with its innate uncertainty makes it tricky to keep an eye on the fix of ‘who actually steers whom’ and ‘with what means’. There also appears to be huge disinclination to spot systemic technical description of the evolving modern institutional structure of economic regulation in a composite and practical manner. Thus, the complexity of international issues, their overlapping nature and the turmoil within the arena in which they surface defy tidy theorizing about effective supervision.
This brings in the wider questions dealt with in the chapter – Is globalisation then a product of material conditions of fundamental technical and economic change or is it collective construct of an artifact of the means we have preferred to arrange political and economic activity? The new reflexive, self-regulatory and horizontal spaces of governance are getting modelled following the logic of competitive market relations whereby multiple formally equal actors (acting or aspiring to act as sources of authority) consult, trade and compete over the deployment of various instruments of authority both intrinsically and in their relations with each other (Shamir, 2008). The chapter also looks into these messy and fluid intersections to situate the key actors at the heart of processes of ‘rearticulation’ and ‘recalibration’ of different modes of governance which operates through a somewhat fuzzy amalgamation of the terrain by corporates, state hierarchy and networks all calibrating and competing to pull off the finest probable’s in metagovernance landscape. Unambiguously, this chapter seeks to elaborate on an institutional-discursive conceptualization of governance while stitching in and out of the complex terrain a weave of governances for modern leviathan – the global corporates.