Does piezoelectric stack directly drive grand biaxial stretching that combines a little of type fatigue test system

• Main Authors: ZHANG FU, QIAO YUANSEN, HONG KUN, YANG LIGUO, WANG ZHIWEI, YU MIAO, LIU HANG, REN ZHUANG, ZHOU MINGXING, XIAO HUIQIONG, WANG SHUNBO, FAN ZUNQIANG, LIU QIUCHENG, XUE BORAN
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2017
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The utility model relates to a does piezoelectric stack directly drive grand biaxial stretching that combines a little of type fatigue test system belongs to accurate scientific instrument field. Mainly by ultra -precision driving drive unit, CCD formation of image detecting element, mechanics and deformation signal detecting element, test piece centre gripping unit, piezoelectric stack driver unit part are constituteed. Among the test procedure, CCD formation of image detecting element carries out the normal position to the test piece central point to be observed, in case the central point takes place the skew, the big rigidity of accessible, high frequency response piezoelectric stack driver unit carry out real time offset and move the compensation, guarantee the position relatively fixed of central point in test procedure of test piece. This test system range of application is wide, can realize the test of unipolar biaxial stretching respectively, and unipolar biaxial stretching fatigue test has good compa