The Stress Detection of Stainless Steel AISI 304, AISI 316L and AISI 316Ti During Three-point Bending Cyclic Loading

Abstract

The article will describe investigation of the elastic and the plastic deformation of stainless steel during three-point bending cyclic loading with using thermovision. The analysis will prove different temperature response to external loading and dependence of elastic or plastic deformation development on material's state. The input data which are necessary for this analysis we will can get from temperature field of specimen surface. Process of elastic and plastic deformation is in dependence on radiation emitted by the object. For obtain thermal fields we will use thermal camera FLIR SC7000 with the highest sensitivity. For comparison, we will make also FEM analysis of three-point bending for this material. Stainless steel is resistance to corrosion and staining, low maintenance and familiar lustre make it an ideal material for many applications. There are over 150 grades of stainless steel, of which maybe fifteen are most commonly used. For our analysis we will use three of them: AISI 304 (DIN 1.4301), AISI 316L (DIN 1.4404) and AISI 316Ti (DIN 1.4571).