Measurement of strain rate near cutting edge by image processing on micro-cutting commercially pure aluminum in SEM

Abstract

This paper visualizes the cutting mechanism of A1100–H18 and A1100–O of commercially pure aluminum for the measurement of the strain rate distribution near a cutting edge in orthogonal cutting. The distribution is measured using various methods in order. The methods are in-situ observation of cutting process in SEM, inputting image data, a computer image processing, calculating displacements by SSDA (Sequential Similarity Detection Algorithm) and calculating strain rates by FEM. The main results obtained are as follows: (1) It enables to measure a microscopic displacement near a cutting edge. (2) Cutting mechanism was made clear by measuring a strain rate distribution. (3) In cutting A1100–O, small fluctuations of the strain rate distribution were observed.