Showing papers in "Materials & Design in 1984"

TL;DR: In this paper, the fundamental phenomena of ultrasonic welding are investigated, covering the sound field, energy conversion and energy transmission, and the significance of joining pressure for welded seam quality.

TL;DR: In this paper, the authors summarise present practice in the production industries and outline the wealth of background research information available from non-US sources to assist in dealing with future problems.

TL;DR: In this article, a model law for matching is derived from this and illustrated with an example, and a theoretically derived joining displacement equation is shown for the connection process, where the influence of temperature and pressure on joining displacement is estimated.

TL;DR: The Replicast CS process developed at the Steel Castings Research and Trade Association, Sheffield, England, uses disposable, high quality, expanded polystyrene patterns to facilitate the manufacture of exceptionally thin, highly refractory ceramic shell moulds without parting lines or cores as discussed by the authors.

TL;DR: The importance of inconceivable events increases with growing complexity of designs and increasing consequences of failures as mentioned in this paper, and it is difficult to deal with such events because they usually depend on interference by some factors which are not readily included in the models and systems used for design of industrial products with respect to normal performance.

TL;DR: In this article, a shot-peening of predictable compressive stresses at the surface of components is used to improve the fatigue strength of a component by 20% to 40% with the help of a standardised control of the process.

TL;DR: In this article, an account is given of some of the duplex steels available, their properties and in particular means of welding them, and an account of their use in various applications.

TL;DR: A review of the physical processes occurring during plasma carburising shows how they promote a carburizing method which offers considerable advantages over the more conventional treatments as discussed by the authors, which is readily controllable and simple to operate in practice.

TL;DR: In order to proceed successfully in computerization of engineering materials data, one has to examine users' attitudes and problem solving processes, using experts on service management and cognitive and social psychology.

TL;DR: The continued investigation of superconductivity, particularly of platinum metal compounds, has resulted in a growing understanding of the phenomenon as mentioned in this paper, which in time must surely find both theoretical explanation and industrial application.

TL;DR: In this article, the main conclusion is that whilst there is a steady increase in use of ceramics in components, evolution rather than revolution will occur in engine design to take best advantage of their properties as these are steadily improved.

TL;DR: In this paper, an accelerated laboratory test involving 60 days exposure in filtered seawater has been proposed and the results showed that stainless steels with at least 25% chromium and 3 1 2 % molybdenum perform well in this test.

TL;DR: In this article, the authors describe some of the associated problems in connection with the formulation and use of intumescent paints, and present a solution to the problems associated with these problems.

TL;DR: The factors governing the application of new materials and manufacturing process are reviewed and the criteria for successful exploitation are described in this article, where it is shown that developments should be targetted on specific components but there should preferably be several of these in different industries to reduce the risk and maximise the benefits of success.

TL;DR: The system of computer aided engineering [CAD/CAM°] both for design and for manufacture shown in the following, is now firmly established in British and German industry for the design and manufacture of complex shapes.

TL;DR: The application of zirconia grain stablised technology to this problem has now resulted in the production of a composite trimetallic material, designated ZGS Platinum “TriM”.

TL;DR: In this article, the methode et cycle des operations are used to define dimensions de pieces pouvant etre soudees par ce procede. Essais des joints soudes

TL;DR: In this article, the essential features and advantages of the process are described, and application in the preparation of a range of ceramic materials is emphasised, and the application of this process is discussed.

TL;DR: In this paper, the basic principles of finite element analysis are outlined by means of a simple example, some applications given and the way is explained in which finite element analyses are carried out.

TL;DR: Favourable experience with lined pipes for transmission of abrasive slurries made at ECLP Engineering has encouraged the firm to extend a manufacturing service to all industry as mentioned in this paper...