Tab 1 calibration data of extensometer .

表1引伸计标定数据。

Analysis on test results of differential extensometer .

差分式伸缩仪试验结果分析。

Measurement of the lateral strain can be accomplished using a lateral extensometer .

侧向应变可用侧向引伸仪来测量。

The structure , principle of the difference extensometer and the experimental results are introduced .

介绍差分式伸缩仪的基本原理、结构以及实验成果。

Abstract : the one-side electronic extensometer fastened on only one side of tensile specimen cannot eliminate the effect of bend of eccentric tension . The results of measurement of such electronic extensometer are instable and then more errors may be included .

摘要：目前，国内外使用的电子引伸计多数是测量拉伸试样单侧的变形，由于拉伸试样往往发生偏心拉伸，单侧测量的引伸计无法扣除偏心拉伸的影响，因而其测量结果极不稳定和产生比较大的误差。