Results 31 to 40 of about 1,439,925 (246)
A study on acoustic metamaterial to control reflection sound
Nihon Kikai Gakkai ronbunshu, 2017 Acoustic metamaterial can have arbitrary acoustic characteristics , and there is possibility to improve acoustic performance of any products dramatically. As metamaterial, many kind of types have been propounded and studied.
Yukihide NAGAYO +2 more
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Materials & Design, 2022 The water-lubricated bearing will be in a state of poor lubrication when marine stern shafts operate under low speed and heavy load conditions, which could cause severe wear and vibration, endangering the stealth performance of underwater vehicles.
Yinsong Liu +4 more
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Advanced Applications in Acoustics, Noise and Vibration, 2018 Preface. 1. SINGLE DEGREE OF FREEDOM SYSTEMS. Introduction. Spring-Mass System. Spring-Mass-Damper System. Forced Response. Transfer Functions and Frequency Methods. Measurement and Testing. Stability. Design and Control of Vibrations.
D. Inman
semanticscholar +1 more source
Experimental study of controlling tip clearance flow in a pump-jet propulsor
Zhongguo Jianchuan Yanjiu, 2023 ObjectiveThis paper aims to suppress the adverse effects of tip clearance flow on the hydrodynamic performance and unsteady excitation force of a pump-jet propulsor. MethodAs for the pre-swirl stator pump-jet propulsor, an annular flexible seal structure
Ruilin HAN +5 more
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Design and testing of a smart rubber stave for marine water-lubricated bearings
Science and Engineering of Composite Materials, 2022 The water-lubricated bearing is mainly installed at the stern of the ship to support the rotation of the main shaft of the ship, which is an important component of the ship’s power plant.
Yu Xiao-feng +5 more
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Modelling, simulation and evaluation of ground vibration caused by rail vehicles*
Vehicle System Dynamics, 2019 There is a great need to develop rail networks over long distances and within cities as more sustainable transport options. However, noise and vibration are seen as a negative environmental consequence.
D. Thompson, G. Kouroussis, E. Ntotsios
semanticscholar +1 more source
Performance research and safety verification of compound structure air spring
Advances in Mechanical Engineering, 2020 To further reduce the vertical stiffness of the air spring, appropriately reduce its lateral stiffness to attenuate the transmission of vibration along the lateral and longitudinal directions, a compound structure air spring (CSAS) was designed.
Lihang Yin +4 more
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Vibration syndrome and vibration in pedestal grinding. [PDF]
Occupational and Environmental Medicine, 1983 At one Finnish foundry all the workers had typical symptoms of vibration induced white finger (VWF) after they began using a new type of pedestal grinding machine. The objectives of this study were to establish the severity of the symptoms and the difference in vibration exposure between the new and the old machines.
Jukka Starck +4 more
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INSPECTING A BUMP TEST IN THE MAINTENANCE OF A 1200-CC DAIHATSU SIGRA DISC BRAKE
Jurnal Ilmiah SINERGI, 2019 A motorized vehicle needs a system that can not only reduce the speed and stop the vehicle but can also serve as a safety tool and ensure a safe distribution which is called a braking system. It is important to conduct maintenance of a disc brake that is
Subekti Subekti +3 more
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