Studying the Deformation and Temperature Distributions in a Specimen during Acoustic-Emission Testing of the Weld-Seam Welding and Cooling Process

摘要

The results of experimental studies of the weld-seam welding and cooling process in steel specimens using acoustic emission (AE) and strain gauging are presented. Deformation was measured by high-temperature strain gauges welded to specimens using spot welding. Temperature was measured by chromel—alumel thermocouples. Measurements were performed with measured with an MMTC-64.01 microprocessor strain-gauging system and a СЦАД -16.10 AE system. Computers of these two systems exchanged information. Residual strain deformations were recorded on a specimen after cooling of a weld seam. Metallographic studies of transverse sections, which were were cut out from the clusterization zones of a weld seam, confirmed the presence of cracks, pores, and faulty fusions.