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Bin Zhang, Hongyi Lu, Shun Liu, Yucheng Yang and Doudou Sang
Multi-stage disc rotor assembly is an important part of the aero-engine rotor manufacturing process. To solve the problem that excessive unbalance of assembly affects the vibration of the whole machine, this paper presents an optimization method for aero...
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Shijie Liang, Mingde Duan, Zhuangya Zhang, Sier Deng and Fenwu Gao
In this paper, we have developedand investigated a novel mechanism that allows for the high-speed rotation of cylindrical rollers without damaging their surfaces, facilitating dynamic unbalance detection.
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Shan Zeng, Sigui Luo, Fei Wang, Xifan Lan, Xinrui Ma and Yuxin Lu
Squeeze film dampers are often used to suppress vibration in turbine engines and play an important role in rotor systems. In this paper, the nonlinear dynamic characteristics of an industrial turbine engine fitted with squeeze film dampers are investigat...
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Cristina Hegedus, Simona-Nicoleta Pa?calau, Luisa Andronie, Ancuta-Simona Rotaru, Alexandra-Antonia Cucu and Daniel Severus Dezmirean
Nowadays, there are a multitude of sources of heavy metal pollution which have unwanted effects on this super organism, the soil, which is capable of self-regulation, but limited. Living a healthy life through the consumption of fruits and vegetables, mu...
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Bernardo Duarte, Alexandra Baeta, João Carlos Marques and Isabel Caçador
Atmospheric CO2 enrichment, which is caused to a large extent by anthropogenic activities, is known to interfere with sediment microbial communities via plant rhizospheres. The present work aimed to evaluate this interaction in Spartina maritima ((Curtis...
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Chun-Jung Huang, Jer-Rong Chang, Ting-Nung Shiau and Kuan-Hung Chen
In this paper, the tool-tip responses for ball end milling, due to the coupling effects of a flexible rotor-bearing system, are investigated numerically. The milling machine tool spindle is modelled as the flexible rotor-bearing system. The critical spee...
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Huibin Zhang, Mingwei Wang, Zhiang Li, Jingtao Zhou, Kexin Zhang, Xin Ma and Manxian Wang
An aero engine fan rotor is composed of a multi-stage disk and multi-stage blades. Excessive unbalance of the aero engine fan rotor after assembly is the main cause of aero engine vibration. In the rotor assembly process, blade sequencing optimization an...
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Andrea Curatolo, Anton Bahu and Dario Modenini
Dynamic spacecraft simulators are becoming a widespread tool to enable effective on-ground verification of the attitude determination and control subsystem (ADCS). In such facilities, the on-orbit rotational dynamics shall be simulated, thereby requiring...
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Wenbo Zhang, Weidong Liu and Le Li
The issue of underwater image restoration was investigated in this paper. Specifically, the color constancy of a single image was used to estimate the transmission map (TM), which can be used in the image formation model to restore the underwater image. ...
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M. El Arayshi, C. M. Verrelli, G. Saggio, M. Iosa, A. E. Gentile, L. Chessa, M. Ruggieri and A. Polizzi
Background. It has been shown in the very recent literature that human walking generates rhythmic motor patterns with hidden time harmonic structures that are represented (at the subject?s comfortable speed) by the occurrence of the golden ratio as the t...
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