Tensile Test of Metalic Materials with Clip-on Extensometer by Strain Control (ISO 6892 and JIS Z2241) - Tensile Test of Metallic Material by Strain Rate Control Using a Strain Gauge Extensometer

Introduction

When the international standard for tensile testing of metallic materials, ISO 6892, was revised in 2009 and the corresponding Japanese Industrial Standard, JIS Z 2241, was revised in 2011, a strain rate control method (measurement of strain with an extensometer) was added as a test item in addition to stress rate control as a method for loading materials to their yield point. Accompanying these changes, requests for tensile tests of metallic materials by strain rate control are now increasing. A highly accurate extensometer is necessary when conducting strain rate control. The Shimadzu SSG-H series of stain gauge extensometers are precision extensometers utilizing a strain gauge and have a variety of outstanding features, including a wide elongation measurement range, light weight, and a one-touch clip-on design. The SSG-H series can be applied to both rod and flat plate specimens. This article introduces an example in which the possibility of conducting ISO 6892-1:2019 compliant strain rate control was verified using a Shimadzu Autograph AGX^TM-100 kNV precision universal testing machine and an SSG50-10 SH strain gauge type one-touch extensometer.

June 1, 2020 GMT