Evaluation of friction using cylinder compression test: two novel approaches based on the barreling deformation and forging force

In this paper, two novel and simple approaches are presented for the evaluation of friction in the metal forming processed.By employing the data obtained from a cylinder compression test in addition to the flow curve, the friction coefficient of the process can also be evaluated.Hence, no extra measurement is required.Two new exponential parameters

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APPLICATION OF STATISTICAL METHODS TO ASSESS THE METROLOGICAL CHARACTERISTICS OF RADIO-HOLOGRAPHIC MEASURING COMPLEXES

Practical application of the radio-holographic method for measuring the characteristics of antennas, especially when conducting acceptance testing of systems, requires an adequate assessment of the errors in the recovery of long-range characteristics.These errors appear to be a superposition composed of various sources, having different nature, dif

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