Results 111 to 120 of about 10,283 (224)

Optimum step design for centering of pistons moving in an incompressible fluid [PDF]

Hydrodynamic effects are analyzed for a stepped piston moving within a tight clearance tube filled with an incompressible fluid. Hydrostatic effects are analyzed and a complete solution is obtained and an optimum step design for centering of the piston ...
Etsion, I., Hamrock, B. J.
core   +1 more source

Degradation Identification of an EHA Piston Pump by Analysis of Load-Holding States

Fluids
In pursuit of advancing the development of more electric aircraft, the present research explores the forefront capabilities of electro-hydrostatic actuators (EHAs) as potential replacements for conventional hydraulic flight control systems.
Yannick Duensing, Amos Merkel, Katharina Schmitz   +2 more
doaj   +1 more source

Piezoelectric coefficients of PMN-0.33PT single crystals [PDF]

, 2014
2000-2001 > Academic research: refereed > Refereed conference paperVersion of ...
Chan, HLW, Cheng, KC, Choy, CL, Luo, H, Yin, Q, Yin, Z   +5 more
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Mock-Up Test of Cast-in-Place Tunnel Lining for TBM Method

Infrastructures
Segmental tunnel linings represent a conventional method commonly employed in tunnel boring machine (TBM) operations. However, this approach presents notable limitations, including handling challenges and the presence of numerous joints prone to leakage.
Šárka Pešková, Vít Šmilauer, Pavel Horák, Rostislav Šulc, Martin Válek, Petr Vítek, Pavel Růžička   +6 more
doaj   +1 more source

Determining structural performance [PDF]

An overview of the methods and concepts developed to enhance and predict structural dynamic characteristics of advanced aeropropulsion systems is presented. Aeroelasticity, vibration control, dynamic systems, and computational structural methods are four
Brown, Gerald, Dirusso, Eliseo, Ernst, Michael A., Fleming, David, Janetzke, David, Kascak, Albert, Kaza, Krishna, Kielb, Robert, Kiraly, Louis J., Lawrence, Charles   +9 more
core   +1 more source

Fluid power products for motion control, including aerospace : 2006 [PDF]

, 2007
Current industrial report. Contains annual data for fluid power products for motion control, including aerospace products produced in the United ...

core  

Mechanism Design and Evaluation of a Threaded Rod-Driven Wheelchair-to-Bed Transformation System

Mehran University Research Journal of Engineering and Technology
This study presents the design and simulation-based evaluation of a low-cost, multifunctional wheelchair-to-bed transformation system powered by a threaded rod mechanism.
Bilal Khan, Mahad Aurangzeb, Mohammad Dawood Farukh, Abdul Muqsit, Komail Lodhi   +4 more
doaj   +1 more source

Investigating the effect of tunnelling on existing tunnels [PDF]

, 2015
A major research project investigating the effect of tunnelling on existing tunnels has been completed at Imperial College London. This subject is always of great concern during the planning and execution of underground tunnelling works in the urban ...
Afshan, S, Avgerinos, V, Burland, JB, Potts, DM, Standing, JR, Tsiampousi, A, Vollum, R, Wan, MSP, Yu, JB   +8 more
core  

Optimal energy-saving controller design for an electro-hydrostatic actuator integrated into a wheel loader

Advances in Mechanical Engineering
Electrifying non-road mobile machinery is vital for reducing emissions and improving energy efficiency. Replacing conventional hydraulic systems with electro-hydrostatic actuators is a key step in this transition.
Baoyan Hu, Jian Fu, Yandu Fan, Zheng Fu
doaj   +1 more source

A Machine Learning Model of Electro-Hydrostatic Actuators With the Low-Data Limit and Its Application to Fault Detection

IEEE Access
This paper presents a novel approach for modeling the dynamics of electro-hydrostatic actuators (EHAs) using the sparse identification of nonlinear dynamics (SINDy) algorithm. SINDy is a machine learning algorithm that identifies governing equations from
Soleiman Hosseinpour, Witold Kinsner, Nariman Sepehri   +2 more
doaj   +1 more source