The Study of Residual Stresses in the Surface Layer

Abstract

Gora. Completed his doctorate at the University of Poznan. Member of the Faculty of Mechanical Engineering. Specialist professional engineering, engineering of the surface layer, automation and robotics, manufacturing technologies.

Estructura y propiedades mecánicas del hierro dúctil GJS-500-7

“…Other parameters such as stress distributions and microhardness do not present any contraindications, which is reported in the literature (Janik and Kuryło, 1999;Kuryło and Janik, 2000;Kuryło, 2003;Kuryło, 2013;Kuryło et al, 2015). In the unannealed casts within surface layers, hardness distribution depends mainly on the wall thickness.…”

“…A mathematical model, described with the relation presented below, was assumed for the hardness tests (second degree polynomial with double interactions) (Kuryło, 2013;Kuryło et al, 2015):…”

“…The structure, and thus the properties of cast iron (in particular its mechanical properties), are also affected by temperature of the cast iron at the spout, casting temperature, the melting method, the type of feedstock, cooling rate, etc. Basing on years of observation, it was found that the decisive factors are (Kuryło, 2013;Kuryło et al, 2015):…”

Bristled Micromachines

“…It means that it is not possible to use conventional simplified Bernoulli differential equation for bristle deflection description. It is necessary to use exact form of Bernoulli differential equation or different kind of description [1][2][3][4][5][6].…”

“…Equation 1 -simplified Bernoulli equation comes from exact Bernoulli equation (3). In case of large deformation the equation 1 is not valid and it is necessary to use exact form -equation 3.…”