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Laser aided part-repair is an emerging trend that has great potential for future industrial applications. Part-repair technologies are currently used in repairing military and civilian equipment. The focus of this paper is to review the current repair processes, which use the laseraided metal deposition technology. Many metal parts, which are worn by continual use, can be restored to working condition by the deposition of metal with a laser and machining. This not only extends the life of the part, but also, saves on cost. A comparison between various processes, their parameters, efficiency, cost, and etc. are also presented. The process limitations, materials, and areas that are best suited for each process are also discussed. ; This research was supported by the National Science Foundation Grant Number DMI-9871185, Missouri Research Board, and a grant from the Missouri Department of Economic Development through the MRTC grant. ; Mechanical Engineering

Fred Oldenburg ; Mit dt. Zsfassung ; Volltext // Exemplar mit der Signatur: München, Bayerische Staatsbibliothek -- 4 Z 68.247-1988,48/57

The spectacle of the wounded body figured prominently in the Middle Ages, from images of Christ's wounds on the cross, to the ripped and torn bodies of tortured saints who miraculously heal through divine intervention, to graphic accounts of battlefield and tournament wounds—evidence of which survives in the archaeological record—and literary episodes of fatal (or not so fatal) wounds. This volume offers a comprehensive look at the complexity of wounding and wound repair in medieval literature and culture, bringing together essays from a wide range of sources and disciplines including arms and armaments, military history, medical history, literature, art history, hagiography, and archaeology across medieval and early modern Europe. Contributors are Stephen Atkinson, Debby Banham, Albrecht Classen, Joshua Easterling, Charlene M. Eska, Carmel Ferragud, M.R. Geldof, Elina Gertsman, Barbara A. Goodman, Máire Johnson, Rachel E. Kellett, Ilana Krug, Virginia Langum, Michael Livingston, Iain A. MacInnes, Timothy May, Vibeke Olson, Salvador Ryan, William Sayers, Patricia Skinner, Alicia Spencer-Hall, Wendy J. Turner, Christine Voth, and Robert C. Woosnam-Savage.

Increasing product lifespans is one of the most effective environmental strategies and therefore repair is a part of the circular economy approach that aims to keep products and materials longer in use. This article explores drivers and barriers for repair from consumers' and commercial repair actors' viewpoints, in order to understand how the repair rates of household appliances, mobile phones and clothing could be increased. The study is based on a consumer survey of 1196 respondents in Norway, and 15 qualitative interviews with actors in the commercial repair industry working with repairs of household consumer goods. A surprisingly high share of repairs was conducted by consumers themselves. The main barrier is the consistently low price of new products, and often of poor quality, which contributes to low profitability in repair work for businesses and low motivation from consumers. Furthermore, access to competent personnel is a major challenge for the repair industry, a need which is expected to increase in the coming years. Both the industry and consumers agree that better quality of products is a starting point for increased product lifespans, and this will also increase the motivation and the number of profitable repairs. These results have political implications on how to promote longer product lifespans through repair such as increased utilization and knowledge of consumers' complaint and warranty rights. ; The research project was supported by the Norwegian Ministry of Children and Families. Article writing was supported by the Consumption Research Norway (SIFO), Oslo Metropolitan University and Research Council of Norway [grant number 303080]. ; publishedVersion