CALIBRATION TEST OF SS-Y EXTENSOMETER CALIBRATION DEVICE
Wu Tao 1,2) ;Zhou Yunyao 1,2) ; and Yang Jiang 1,2)
1)Institute of Seismology, CEA, Wuhan 4300712)Laboratory of Crustal Movement and Earth Observation，Wuhan 430071
Abstract As SSYtype extensometer of high precision, good stability, it is widely used in the crustal deformation observation.The use of new diaphragm has greatly increased the displacement calibration repetition accuracy and constant precision of extensometer. However for such a diaphragm calibration device a comparative measurement traceability has not yet made up to date. Diaphragm we use the laser interference technique to recalibrate the calibration device through the line, the laser energy source, therefore, the diaphragm after such a calibration calibrator is accurate and reliable.
Key words ：
extensometer
patch
calibration device
laser
interferometry
Received: 01 January 1900
Corresponding Authors:
Wu Tao
Cite this article:
Wu Tao,Zhou Yunyao,and Yang Jiang. CALIBRATION TEST OF SS-Y EXTENSOMETER CALIBRATION DEVICE[J]. , 2010, 30(Supp.2): 136-137.
Wu Tao,Zhou Yunyao,and Yang Jiang. CALIBRATION TEST OF SS-Y EXTENSOMETER CALIBRATION DEVICE[J]. jgg, 2010, 30(Supp.2): 136-137.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2010/V30/ISupp.2/136
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