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Dynamic analysis of double racks gear 3D roll forming machine 被引量:2
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作者 那日苏 Li Qiang +1 位作者 Guan Yanzhi Yan Yu 《High Technology Letters》 EI CAS 2014年第4期429-435,共7页
3 D roll-forming for high strength steel sheets is a new technology at present.Double racks gear 3D roll forming machine developed by our research group can be used to perform variable cross section roll forming for h... 3 D roll-forming for high strength steel sheets is a new technology at present.Double racks gear 3D roll forming machine developed by our research group can be used to perform variable cross section roll forming for high strength steel.In the paper,a dynamic model of 8-DOF double rack gear 3D roll-forming machine is established by the method of Lagrange equation.The expression of the angle acceleration of the system response is obtained by solving the dynamic equations.Through an actual engineering example,the dynamical characters of the 3D roll forming machine are revealed.The results can support the design of 3D roll forming machine.Meanwhile,the research will play an active role in the development of control system. 展开更多
关键词 ultra high strength steel 3d roll-forming machine dynamic analysis variable cross section
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Ultrasonic signal detection based on Fabry–Perot cavity sensor 被引量:1
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作者 Wu Yang Chonglei Zhang +1 位作者 Jiaqi Zeng Wei Song 《Visual Computing for Industry,Biomedicine,and Art》 EI 2021年第1期70-75,共6页
Acoustic/ultrasonic sensors are devices that can convert mechanical energy into electrical signals.The Fabry–Perot cavity is processed on the end face of the double-clad fiber by a two-photon three-dimensional lithog... Acoustic/ultrasonic sensors are devices that can convert mechanical energy into electrical signals.The Fabry–Perot cavity is processed on the end face of the double-clad fiber by a two-photon three-dimensional lithography machine.In this study,the outer diameter of the core cladding was 250μm,the diameter of the core was 9μm,and the microcavity sensing unit was only 30μm.It could measure ultrasonic signals with high precision.The characteristics of the proposed ultrasonic sensor were investigated,and its feasibility was proven through experiments.Its design has a small size and can replace a larger ultrasonic detector device for photoacoustic signal detection.The sensor is applicable to the field of biomedical information technology,including medical diagnosis,photoacoustic endoscopy,and photoacoustic imaging. 展开更多
关键词 Fabry-Perot microcavity Double-clad fiber Acoustic sensor Endoscopic photoacoustic imaging Two-photon 3d lithography machine Full-optical detection
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