The strain transmits to the sensitive grid through a transition area whose range is related to the test strain, which introduces variations to the sensitivity coefficient of the electric resistance strain gauge instead if a commonly considered constant. This issue analyzes the test aberration due to the variations of the sensitivity coefficient, and offers some methods to reduce its influence.
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雷一鸣. 电阻应变计应变传递研究及误差分析[J]. 科学技术与工程, 2011, (32): . Lei Yiming. Strain Transmit Research and Aberration Analysis of Electric Resistance Strain Gauge[J]. Science Technology and Engineering,2011,(32).