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本文阐述了一种应变式引伸计,灵敏度、精度都很高,测量范围大。当前在一般的材料试验机上利用静态电阻应变仪,可测定材料的弹性模量和条件屈服极限。配置拉力传感器和动态电阻应变仪测定材料的载荷——变形曲线,获得材料的机械性能指标。
This article describes a strain-based extensometer with high sensitivity and accuracy and a large measuring range. Static resistance strain gauges are currently used on general material testing machines to determine the material’s elastic modulus and conditional yield limits. Tension sensors and dynamic resistance strain gauges are used to determine the material loading-deformation curve and obtain the mechanical properties of the material.