为什么材料拉伸试验要用“引伸计” - 知乎专栏
引伸计是测量试件两点间线变形的一种仪器。 引伸计一般由传感器、放大器和记录器三部分 组成。 试验时，传感器与试件测量段（亦称“测量标距”）的两端点“固定”，传感器测得标距间的变形（伸长或缩短）并将其转化为其他信号（如电信号、光信号），经放大器放大并由记录器采集，从而获得数据。 引伸计包括 机械式引伸计 、光学引伸计、电子引伸计（图1）等。 目前 土木工程试验 中较常用电子引伸计，如各类材料的拉伸试验。 而电子引伸计又可分为轴向引伸计、横向 …
Extensometer - Wikipedia
An extensometer is a device that is used to measure changes in the length of an object. [1] It is useful for stress - strain measurements and tensile tests. Its name comes from "extension-meter".
引伸计（测量仪器）_百度百科
引伸计是测量构件及其他物体两点之间线变形的一种仪器，通常由传感器、放大器和记录器三部分组成。 传感器直接和被测构件接触。 构件上被测的两点之间的距离l为标距，标距的变化 l（ …
Extensometer: Types, How It Works, Applications - Encardio Rite
What Is An Extensometer? An extensometer is a high-precision instrument specially designed for geologists or civil engineers to measure the elongation of a material under stress. This instrument is perfect for tensile tests. It can also determine yield strength, tensile strength, yield point elongation, strain-hardening exponent, and strain ratio.
What is an Extensometer? Basic Extensometer Guide - Epsilon Tech
This guide aims to answer your basic extensometer questions such as what is an extensometer and how does an extensometer work. If you’re looking to purchase an extensometer you can view our full range of extensometers here .
Extensometers | Strain measurement devices | ZwickRoell
An extensometer is a strain measurement device used to measure the extension of a material under load. The extension of a material is a physical deformation that occurs when it is subjected to a load such as the pulling force associated with tensile testing .
Extensometers - Instron
Instron offers a wide range of strain measurement devices to suit every material and application. From simple bonded strain gauges to the most advanced video extensometry, all of our devices are designed and manufactured by Instron engineers to …
引伸计 - Instron
视频引伸计属于一种非接触式引伸计，它通过使用高分辨率数字影像技术跟踪试样上的两个附加标记的位移来测量变形。 视频引伸计的主要优点是，它们不对试样施加任何影响，解决了刀刃打滑的问题，也消除了活动件的惯性造成的误差。 随着试样处理需求量的增加，人们需要更加快速、可靠、准确的材料试验例程。 自动接触式引伸计具备这一能力，试验室可以利用自动标距长度定位和自动安装试样功能来提高试验室的工作效率。 静态试验的夹持式引伸计安装试样速度快，易于 …
Vector Extensometers - Imetrum
Vector accommodates multiple gauge lengths within one extensometer, including outputting in both strain and extension. Vector is suitable for a range of specimen geometries, environmental conditions and UTMs. Using Vector removes the need to manage delicate contactable extensometers and can test to failure uninterrupted.
Reliant Technology - Extensometers and accessories
Your source for innovative, high quality extensometry. Extensometers and accessories for strain measurement in materials testing.
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