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This article presents the process of determining reduced stress which occurs during the deformation of the flexspline of the toothed harmonic drive. The discussed issue is complex as the stress distribution results from the deformation of the flexspline by the generator and from the load it carries. The article takes into account flexsplines of various tooth profiles: involute, rectilinear and convexo-concave...
Structural elements made of nickel-based superalloys are often plastically formed at elevated temperature (e.g. by stamping) so detailed characterization of their deformation behaviour is crucial. Some alloys exhibit unstable plastic flow at elevated temperature characterized by serrated yielding, known as Portevin-Le Chatelier (PLC) effect. This phenomenon is usually attributed to dynamic strain...
In the paper the results of welding of girth welded joints of steel pipe API 5L grade X70 (L485M) are presented. Manual metal arc (MMA) and metal active gas welding (MAG) were applied. Two welding filler metals for MMA were used to weld the girth welded joints and one for MAG process. The results of mechanical tests and distribution of residual stress of the girth welded joints are presented. Results...
Electrochemical machining process (ECM) can be applied for shaping advanced materials which are difficult or impossible for machining using conventional methods. In electrochemical machining the workpiece is an anode and material is removed as a result of electrochemical reactions “atom” by “atom”, without mechanical forces. This mechanism of material removal makes it possible to obtain high quality...
The basic factor limiting the use of glasses is their unsatisfactory mechanical strength. The improvement of the mechanical strength of glasses is usually obtained by applying their respective thin surface layers. The object of the research was glass coated with zirconium oxide. For the application of zirconium oxide layer, LPPS (Low Pressure Plasma Spraying) method was used. The resulting materials...
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