Instron AVE2 - Chapter 1: Introduction; Overview

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Chapter 1
Introduction
• Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
• Product support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
• Product documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Overview
A video extensometer is designed to accurately measure specimen strain during a
materials test without the need to contact the specimen.
Advantages of the non-contacting measuring process include no mechanical influence
on the specimen, ease of use and reproducibility.
The principle of the video extensometer is based upon accurate detection of the gauge
length markers using a high resolution digital video camera.
There are two models of the second generation Instron video extensometer; the AVE2
(Advanced Video Extensometer) and the SVE2 (Standard Video Extensometer).
AVE2 includes:
• CDAT (Constant Density Air Tube) system of fans to control air flow between the
camera and specimen and minimize optical distortion caused by air currents,
enhancing the measurement noise performance
• an option to add transverse strain measurement
• an option to add DIC (Digital Image Correlation) capability
• an option for dynamic axial strain measurement and control using WaveMatrix™
SVE2 does not include the CDAT system and the transverse strain measurement, DIC
option and dynamic axial strain measurement are not available.