Results 31 to 40 of about 4,744 (161)
Ultrasonic rock sampling using longitudinal–torsional vibrations
Ultrasonics, 2010 In the last years several European and US space projects have been focused on the development of surface rovers for planetary missions, such as ExoMars and Mars Exploration Rovers. The main function of these vehicles consists of moving across planet surfaces, and drilling and retrieving samples for in situ analysis.
Cardoni, Andrea +2 more
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Vibration Reduction of Pneumatic Rock Drill for Rock Face Stabilisation Sector
ICHAV 2023, 2023 Workers in the rock face stabilisation sector are exposed to high levels of vibration from pneumatic rock drills, which can lead to vibration injuries. The work situation is also ergonomically challenging since the work often is performed on steep cliffs with heavy equipment and a substantial degree of dust exposure.
Hans Lindell +2 more
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Whole Body Vibration Analysis of Baby Hammock
MATEC Web of Conferences, 2018 Studies have been carried on the effect of rocking on a baby and concluded that baby sleeps easier while being rocked. In Malaysia, as in many Southeast Asian Countries, it is common to put babies to sleep in a baby hammock.
Ko Ying Hao, Geh Chia Sin
doaj +1 more source
Molecules, 2015 Experimentally determined activation energies of propane dehydrogenation catalyzed by ZSM-5 zeolites have been used to test the SET theory. The basis of this theory is that the catalyst system transfers vibrational energy via a resonance process to a ...
Ragnar Larsson
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MEMS Underwater Directional Acoustic Sensor in Near Neutral Buoyancy Configuration
Sensors, 2022 A MEMS directional acoustic sensor housed in an air cavity and operated underwater in a near-neutral buoyancy configuration is demonstrated. The sensor consists of two wings connected by a bridge and attached to a substrate by two centrally mounted ...
Fabio Alves +4 more
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Numerical Study on Dynamic Response of Pile Group Foundation of Geotechnical Centrifuge
MATEC Web of Conferences, 2015 Based on National Engineering Laboratory for Harbor Engineering Structure-Geotechnical Centrifuge Laboratory construction project, the dynamical response of piles foundation under horizontal-rocking vibration was analyzed by using finite element software
Mao Quansheng, Yue Tao, Zuo Dianjun
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Ring Laser Gyro G-Sensitive Misalignment Calibration in Linear Vibration Environments
Sensors, 2018 The ring laser gyro (RLG) dither axis will bend and exhibit errors due to the specific forces acting on the instrument, which are known as g-sensitive misalignments of the gyros.
Lin Wang +4 more
doaj +1 more source
Shock and Vibration, 2020 In the present paper, the amplitude-frequency characteristics of torsional vibration are discussed theoretically and experimentally for automotive powertrain.
Jinli Xu, Jiwei Zhu, Feifan Xia
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Understanding intracranial aneurysm sounds via high-fidelity fluid-structure-interaction modelling
Communications Medicine, 2023 Background Since the 1960s, the origins of intracranial aneurysm bruits and musical murmurs have been debated, with proposed mechanisms ranging from self-excitation (i.e., resonance) by stable pulsatile flow, to vibration caused by unstable (laminar ...
David A. Bruneau +2 more
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Lubricants, 2018 Drag reduction technologies mainly include the mechanical method and the chemical method. Mechanical drag reduction technologies are widespread in the drilling field due to their environmental friendliness and ease of use.
Xing-Ming Wang, Xing-Miao Yao
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