Acoustic and Emission Control of the Hereditable Stress and Strain State of the Metal Surface Layer during Cutting and Surface Plastic Deformation

Abstract:

Methods and experimental findings shown describe how mechanical parameters of the surface layer behavior and acoustic emission signals are interconnected.Experimental study was carried out under conditions of simple single-and dual stage compression. Graphic and analytic dependencies between the counting rate of the acoustic emission Ṅ and the shear deformation degree Λ were revealed. The findings describing dual compression show that the acoustic emission method is sensitive to the material stressing history.The dependency of the acoustic emission signal energy on the pre-stressing program was found, which helped establish that, with values of the plasticity reserve depletion being equal for all experimental specimens, the accumulated shear deformation degree Λ was different.The findings describing the hereditable physical state of the strengthened surface layer of parts during cutting and surface plastic deformation are presented in the paper. The study was carried out using the methods of property accumulation control in deformation sites depending on treatment modes with real-time monitoring of acoustic emission signals. A peculiar feature of these methods is the use of visual recording of the metal plastic flow to be further used in calculating the hereditable parameters of the surface layer quality.

• Periodical: Applied Mechanics and Materials (Volume 788)
• Pages: 3-10
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.788.3
• Online since: August 2015
• Authors: Valeriy Yu. Blumenstein*, Fyodor I. Panteleenko, Igor V. Miroshin, Oleg A. Ostanin
• Keywords: Acoustic Emission, Deformation Site, Orthogonal Metal Cutting, Strain State, Stress, Surface Layer, Surface Plastic Deformation

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