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".
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、 …
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 .
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（ …
引伸计 | 应变测量设备 | ZwickRoell
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典型值包括拉伸模量、 …
An Extensometer Explained: What It Is and How It Works - Flintec
An extensometer is a precision instrument used to measure the deformation, displacement, or elongation of materials when subjected to stress. They are commonly used in material testing environments to measure strain, the deformation or displacement in a …
Exploring Extensometers - What Are They and Why Are They Used - AZoM.com
Mar 5, 2021 · Extensometers measure the extension, compression, or shear deformation of a material sample when force is applied in a testing machine. Critical properties such as elastic modulus, offset yield, and complete stress-strain curves are …
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 …
11 Types of Extensometers – How they Work and their Uses
Aug 29, 2023 · Extensometers are devices used in the measurement of length of objects. It has a high precision and used in stress-strain measurements and also in tensile strength tests. There are basically two major types of extensometers based on their principle of operation: They are the contact extensometers and the Non-contact extensometers.
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