Film single-axis bidirectional decline micro-stretching device and method for measuring
Title：
Film single-axis bidirectional decline micro-stretching device and method for measuring
Application Number：
 200710120711
Application Date：
 2007/08/24
Announcement Date：
 2008/01/23
Pub. Date：
Publication Number：
 101109680
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G01N 3/28G01N 3/00G01N 19/00G01N 13/16G01B 11/16
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Li Xide, Wu Wenwang, Zhang Weibao, Lin Shutian
Key Words：
 Film, single-axis, bidirectional, micro-stretch, device, measuring method
Abstract：
 The invention provides a film single-shaft bidirectional tensing mechanism and a measuring method for the deformation in the film, and pertains to the field of precision machinery. The mechanism uses two piezoelectric ceramics 8 to push from two directions respectively a slider 4 and an adjustable slider 3 that can move along a slideway 2, between the slider 4/the adjustable slider 3 and a support 1, limit springs 9 are used for limiting; on the slider 4 and the adjustable slider 3, a force sensing arm 6 is fixedly connected respectively; the top of the force sensing arm 6 is connected with a stage. At measuring, first a film specimen to be measured is clamped on the stage; then the piezoelectric ceramics 8 are applied with voltage continuously, so that the two force sensing arms 6 will have mini displacement opposite to each other; meanwhile, the images and mechanic parameters of the film deformation are recorded by a real-time acquisition system and stress pieces 5 attached on the force sensing arms 6. By the invention, the measuring area can be observed continuously, and measurement of wider range can be carried out by force sensing arms of different measuring ranges.
Claim：
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PCT：
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