Peter G. Kelly, Benjamin H. Gallup and Joseph D. Roy-Mayhew
Many additively manufactured parts suffer from reduced interlayer strength. This anisotropy is necessarily tied to the orientation during manufacture. When individual features on…
Abstract
Purpose
Many additively manufactured parts suffer from reduced interlayer strength. This anisotropy is necessarily tied to the orientation during manufacture. When individual features on a part have conflicting optimal orientations, the part is unavoidably compromised. This paper aims to demonstrate a strategy in which conflicting features can be functionally separated into “co-parts” which are individually aligned in an optimal orientation, selectively reinforced with continuous fiber, printed simultaneously and, finally, assembled into a composite part with substantially improved performance.
Design/methodology/approach
Several candidate parts were selected for co-part decomposition. They were printed as standard fused filament fabrication plastic parts, parts reinforced with continuous fiber in one plane and co-part assemblies both with and without continuous fiber reinforcement (CFR). All parts were loaded until failure. Additionally, parts representative of common suboptimally oriented features (“unit tests”) were similarly printed and tested.
Findings
CFR delivered substantial improvement over unreinforced plastic-only parts in both standard parts and co-part assemblies, as expected. Reinforced parts held up to 2.5x the ultimate load of equivalent plastic-only parts. The co-part strategy delivered even greater improvement, particularly when also reinforced with continuous fiber. Plastic-only co-part assemblies held up to 3.2x the ultimate load of equivalent plastic only parts. Continuous fiber reinforced co-part assemblies held up to 6.4x the ultimate load of equivalent plastic-only parts. Additionally, the thought process behind general co-part design is explored and a vision of simulation-driven automated co-part implementation is discussed.
Originality/value
This technique is a novel way to overcome one of the most common challenges preventing the functional use of additively manufactured parts. It delivers compelling performance with continuous carbon fiber reinforcement in 3D printed parts. Further study could extend the technique to any anisotropic manufacturing method, additive or otherwise.
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Pawan Budhwar, Andy Crane, Annette Davies, Rick Delbridge, Tim Edwards, Mahmoud Ezzamel, Lloyd Harris, Emmanuel Ogbonna and Robyn Thomas
Wonders whether companies actually have employees best interests at heart across physical, mental and spiritual spheres. Posits that most organizations ignore their workforce �…
Abstract
Wonders whether companies actually have employees best interests at heart across physical, mental and spiritual spheres. Posits that most organizations ignore their workforce – not even, in many cases, describing workers as assets! Describes many studies to back up this claim in theis work based on the 2002 Employment Research Unit Annual Conference, in Cardiff, Wales.
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Looks at the 2000 Employment Research Unit Annual Conference held at the University of Cardiff in Wales on 6/7 September 2000. Spotlights the 76 or so presentations within and…
Abstract
Looks at the 2000 Employment Research Unit Annual Conference held at the University of Cardiff in Wales on 6/7 September 2000. Spotlights the 76 or so presentations within and shows that these are in many, differing, areas across management research from: retail finance; precarious jobs and decisions; methodological lessons from feminism; call centre experience and disability discrimination. These and all points east and west are covered and laid out in a simple, abstract style, including, where applicable, references, endnotes and bibliography in an easy‐to‐follow manner. Summarizes each paper and also gives conclusions where needed, in a comfortable modern format.
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Briefly reviews previous literature by the author before presenting an original 12 step system integration protocol designed to ensure the success of companies or countries in…
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Briefly reviews previous literature by the author before presenting an original 12 step system integration protocol designed to ensure the success of companies or countries in their efforts to develop and market new products. Looks at the issues from different strategic levels such as corporate, international, military and economic. Presents 31 case studies, including the success of Japan in microchips to the failure of Xerox to sell its invention of the Alto personal computer 3 years before Apple: from the success in DNA and Superconductor research to the success of Sunbeam in inventing and marketing food processors: and from the daring invention and production of atomic energy for survival to the successes of sewing machine inventor Howe in co‐operating on patents to compete in markets. Includes 306 questions and answers in order to qualify concepts introduced.
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Sarah Bone, Alasdair MacGruer and Rebecca Kelly
Presents the three winning entries from the 1997 Scottish Schools Essay Competition, organized by the University of Paisley Library and sponsored by John Smith & Son Bookshops…
Abstract
Presents the three winning entries from the 1997 Scottish Schools Essay Competition, organized by the University of Paisley Library and sponsored by John Smith & Son Bookshops Limited. Sarah Bone’s first prize winning entry discusses J.M. Barrie’s Peter Pan and explores the darker and more disturbing aspects of the book. Alasdair MacGruer discusses the theme of social progress through science as shown in H.G. Wells’ The Time Machine. Rebecca Kelly discusses E. Nesbit’s The Railway Children and its relevance today.
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Lori Anderson Snyder, Peter Y. Chen, Paula L. Grubb, Rashaun K. Roberts, Steven L. Sauter and Naomi G. Swanson
This chapter examines aggression at work perpetrated by individual insiders by bringing together streams of research that have often been examined separately. A comparison of the…
Abstract
This chapter examines aggression at work perpetrated by individual insiders by bringing together streams of research that have often been examined separately. A comparison of the similarities and differences of aggression toward individuals, such as verbal abuse or physical attack, and aggression toward organizations, such as embezzlement or work slowdowns, is shown to provide important insights about the causes and consequences of workplace aggression. We propose a comprehensive model based on the integration of prior theoretical treatments and empirical findings. The model attempts to offer a framework to systematically examine psychological and organizational mechanisms underlying workplace aggression, and to explain the reasons why workplace violence policies and procedures sometimes fail. A set of research propositions is also suggested to assist in achieving this end in future research.
In the last four years, since Volume I of this Bibliography first appeared, there has been an explosion of literature in all the main functional areas of business. This wealth of…
Abstract
In the last four years, since Volume I of this Bibliography first appeared, there has been an explosion of literature in all the main functional areas of business. This wealth of material poses problems for the researcher in management studies — and, of course, for the librarian: uncovering what has been written in any one area is not an easy task. This volume aims to help the librarian and the researcher overcome some of the immediate problems of identification of material. It is an annotated bibliography of management, drawing on the wide variety of literature produced by MCB University Press. Over the last four years, MCB University Press has produced an extensive range of books and serial publications covering most of the established and many of the developing areas of management. This volume, in conjunction with Volume I, provides a guide to all the material published so far.
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Paul Blyton, Edmund Heery and Peter Turnbull
Presents 35 abstracts from the 2001 Employment Research Unit Annual conference held at Cardiff Business School in September 2001. Attempts to explore the theme of changing…
Abstract
Presents 35 abstracts from the 2001 Employment Research Unit Annual conference held at Cardiff Business School in September 2001. Attempts to explore the theme of changing politics of employment relations beyond and within the nation state, against a background of concern in the developed economies at the erosion of relatively advanced conditions of work and social welfare through increasing competition and international agitation for more effective global labour standards. Divides this concept into two areas, addressing the erosion of employment standards through processes of restructuring and examining attempts by governments, trade unions and agencies to re‐create effective systems of regulation. Gives case examples from areas such as India, Wales, London, Ireland, South Africa, Europe and Japan. Covers subjects such as the Disability Discrimination Act, minimum wage, training, contract workers and managing change.
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This study examines the experiences of five teachers working in two English secondary school subject departments after being given the opportunity to engage with Lesson Study (LS…
Abstract
Purpose
This study examines the experiences of five teachers working in two English secondary school subject departments after being given the opportunity to engage with Lesson Study (LS) to increase student performance in their subject areas. This study aimed to reveal the drivers for the teachers' engagement in LS, and how this experience of Joint Professional Development (JPD) might be contributing to their learning as teachers.
Design/methodology/approach
This study applies an analytic approach to evidencing teacher learning, based on the work of Knud Illeris, offering this as a methodological contribution to the field of professional development literature.
Findings
Findings reveal that, despite all the teachers developing a passion for learning through LS, there are constraints on its sustainability and impact which can be attributed to the teachers' broader contexts and which affected them differently. The constraints centre on tensions between priorities and agendas within and beyond the school, related largely to budgets and visions of staff development.
Research limitations/implications
This focused study on two subject departments engaging in LS limits its generalisability in terms of findings. However, the study offers a practical research application of a model of learning for analysis of teacher reflections on collaborative learning experiences.
Originality/value
Understanding individual teacher reflections on LS experiences is under-represented in the literature, in particular studies providing insights into conditions conducive and constraining to JPD.