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Laihu Peng, Yuan Sun, Yubao Qi and Xin Ru
In order to solve the problem of low response frequency and poor consistency of conventional yarn grippers in weft accumulators, in this study, a piezoelectric yarn gripper is used instead of conventional yarn grippers and the motion characteristics of i...
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Dexin Wei, Chongyou Wu, Lan Jiang, Gang Wang and Hui Chen
At present, Chinese corn grain harvesters lack cleaning loss monitoring. Cleaning parameters cannot be automatically adjusted, and the loss rate is high. In view of the above problems, a cleaning loss monitoring sensor is designed, composed of a metal im...
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Fan Zhang, Bo-Chuan Chen, Zhen-Zhen Gui, Jian-Hui Zhang, Xi Huang, Jia-Li Liang, Yao-Hua Zeng, Tian Tan, Tang Xie, Yu-Xin Wen and Jia-Long Wang
Dynamic mesh atomizers have been widely used in various fields because of their compact structure, low energy consumption, and low production costs. The finite element method is an important technique to analyze the factors affecting the atomization perf...
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Min Son, Michael Börner, Wolfgang Armbruster and Justin S. Hardi
To investigate a hypothesis of the orifice flow-induced instability in rocket engine thrust chambers, a single liquid oxygen (LOX) injector with an optically accessible orifice module was used for experiments, with water as a simulant for LOX. The unstea...
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Alexander V. Cherpakov, Ivan A. Parinov and Rakesh Kumar Haldkar
A computational and experimental approach to modeling oscillations of a new axial-type piezoelectric generator (PEG) with an attached mass and an active base is considered. A pair of cylindrical piezoelements located along the generator axis is used as a...
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Vincenzo Gattulli, Francesco Potenza and Giulio Piccirillo
This paper presents the results of an experimental dynamic campaign carried out on a reinforced concrete multi-span arch bridge. Five expeditious ambient vibration tests were conducted separately on five spans (one test in each span) of the bridge using ...
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Michaël Lematre and Marc Lethiecq
This paper presents the possibility of enhancement of the generation and detection of poorly energetic acoustic-guided waves in multilayered structures using a new design for a V(z) transducer. By defining a modified V(z) transducer composed of segmented...
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Ilaria Ronconi, Roberta Salierno, Ling Liu, Andrea Giglio, Francesco Ripamonti and Ingrid Paoletti
The limitations of active noise control (ANC) in coping with low frequencies and of passive noise control (PNC) in coping with middle-high frequencies are objects of research that present the potentialities of hybrid noise control (HBC). It aims at combi...
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Sang-Hyub Moon, Kyung Hwa Chang, Hyun Mok Park, Bong Joo Park, Sun Kook Yoo and Ki Chang Nam
The functional components of vibrating mesh nebulizers are a piezoelectric ceramic with a mesh mounted on one side, a reservoir, and a driving circuit. The piezoelectric material vibrates at a specific intrinsic frequency, and when the mechanical resonan...
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Zhongsheng Chen, Yeping Xiong and Yongxiang Wei
Piezoelectric metamaterial plate (PMP) is being investigated for structural vibration energy harvesting (SVEH), in which an interface circuit is often used. Thus, it is a challenge to perform bandgap optimization of such an elastic?electro?mechanical cou...
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