DEVELOPMENT OF DIFFERENCE EXTENSOMETER
Lu Chongwu ;and Yang Jiang
Institute of Seismology,CEA, Wuhan 430071
Abstract The structure,principle of the difference extensometer and the experimental results are introduced. The results show that difference extensometer is better than available instruments in the capability for antijamming, especially, it can particularly restrain the interference of common mode from the environmental vibration, the power fail in a moment and power noise.
Key words ：
extensometer
strain
difference
anti-jamming
test
Received: 01 January 1900
Corresponding Authors:
Lu Chongwu
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