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Adjustable frequency high sensitivity hydrophone, has shell formed as cylindrical shell, adjustable acoustic array magnifier main body connected to return circuit, and converging array component arranged on piezoelectric body. 专利
申请日期: 2018-01-01, 公开日期: 2018-06-01
作者:  ZHAO J YAN P GAO R LIU P SUN C ZHAN
收藏  |  浏览/下载:8/0  |  提交时间:2019/12/02
Ultrasonic guided wave based T-shaped stringer defect locating method, involves determining transverse defect position of T-shaped stringer according to detection result of selected frequency and different transverse defect sensitivity. 专利
申请日期: 2018-01-01, 公开日期: 2018-06-12
作者:  WU Z ZHANG J YANG Z LIU K ZHENG Y Z
收藏  |  浏览/下载:8/0  |  提交时间:2019/12/02
Rocket engine thrust vector and rotation calibration method, involves establishing sensitivity analysis model, performing calibration loading experiment, obtaining test result by using calibrating system, and separating measurement error. 专利
申请日期: 2018-01-01, 公开日期: 2018-03-23
作者:  ZHANG J JIA Z TIAN Y REN Z CHANG Q
收藏  |  浏览/下载:6/0  |  提交时间:2019/12/02


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