Extensometer - Wikipedia
网页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". It was invented by Charles Huston who described it in an article in the Journal of the Franklin Institute in 1879.
为什么材料拉伸试验要用“引伸计” - 知乎专栏
网页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 …
What is an Extensometer? Basic Extensometer Guide - Epsilon Tech
网页Extensometers measure the extension, compression, or shear deformation of a material sample when force is applied in a testing machine. They are often used to measure the test piece’s strain, which is calculated by dividing the change in the test specimen’s length by its original gauge length.
Extensometer: Types, How It Works, Applications - Encardio Rite
网页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.
Extensometers - Instron
网页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 meet our own stringent accuracy standards.
引伸计（测量仪器）_百度百科
网页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。. 中文名. 引伸计. 外文名. extensometer. 简 介. 一种仪器. 组 成. 由传感器、放大器和记录器组成.
Extensometers | Strain measurement devices | ZwickRoell
网页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 .
引伸计 | 应变测量设备 | ZwickRoell
网页引伸计 是一种用于测量材料在载荷作用下伸长量的 应变测量设备。 材料的延伸是一种物理变形，发生在材料承受诸如 拉伸试验 中的拉力等负载时。 除了由拉伸载荷引起的应变外，引伸计还可以帮助测定在施加不同类型载荷时的压缩变形或挠度，包括 循环试验（含疲劳试验） 、 压缩试验 和 弯曲试验。 引伸计直接在试样上测量应变。 这消除了其他测试部件对测量的影响，并提高了准确性。 应变测量是测定材料特性值所必需的。 使用引伸计可以测定的 …
Extensometers - SpringerLink
网页Extensometers are the most convenient and widely used instruments for the measurement of strain in a material test specimen. Traditionally extensometers have been based around contacting techniques, however noncontacting optical techniques are becoming more important and the two approaches are compared in this chapter.
What Is an Extensometer - Instron
网页What Is an Extensometer? Strain measurement is a key component of mechanical testing and is required by nearly all relevant ASTM and ISO standards. Instron® offers a wide range of strain measurement devices to suit every material and application.