Results 51 to 60 of about 10,746 (231)

Failure of Glass Fiber‐Reinforced iPP in Static and Cyclic Loading Characterized by Factorizability of Time, Temperature, and Fiber Orientation

Journal of Applied Polymer Science, Volume 143, Issue 2, January 10, 2026.
By characterizing the deformation rate‐ and temperature‐dependent yield stress on an arbitrary reference fiber orientation and multiplying it with the anisotropic scaling function obtained from the yield stresses measured for various fiber orientations at a single temperature and deformation rate, it is possible to perform lifetime predictions for both
S. J. J. van den Broek, L. E. Govaert, T. A. P. Engels   +2 more
wiley   +1 more source

Extended state observer–based fractional order proportional–integral–derivative controller for a novel electro-hydraulic servo system with iso-actuation balancing and positioning

Advances in Mechanical Engineering, 2015
Aiming at balancing and positioning of a new electro-hydraulic servo system with iso-actuation configuration, an extended state observer–based fractional order proportional–integral–derivative controller is proposed in this study. To meet the lightweight
Qiang Gao, Yuanlong Hou, Tongbin Deng, Chao Wang, Runmin Hou   +4 more
doaj   +1 more source

A New Classification Method of Surrounding Rock Quality for Phyllite Tunnels Under the Condition of Layer Orientation Parallel to the Orientation of Tunnel Axis

Energy Science &Engineering, Volume 14, Issue 1, Page 47-60, January 2026.
Modified Mass Classification of Layered Rock Masses Based on the HC Method. ABSTRACT The HC method for hydropower is a commonly used rock mass quality classification technique in China's hydropower industry. Due to the anisotropic nature of the layered schist in the study area, and the varying angles between different tunnel layers and the tunnel axis,
Jing Yang, Jingyong Wang, Hao Luo, Ping Wang, Chengfeng Wu, Rui Zeng, Yupeng Lu, Hao Man, Feng Ji   +8 more
wiley   +1 more source

Position Tracking Control of an Electro-Hydraulic Servo System Based on Nonlinear Disturbance Observers

IEEE Access
In order to ensure a precisely controlled electro hydraulic servo system, a sliding mode control algorithm based on nonlinear disturbance observers (NDOB-SMC) is developed in this study.
Qingqing Xu, Yaxing Lu, Mingxing Yang, Xing Zhang   +3 more
doaj   +1 more source

THE VELOCITY CONTROL OF THE ELECTRO-HYDRAULIC SERVO SYSTEM

International Journal of Research in Engineering and Technology, 2014
In general two basic methods are used for controlling the velocity of a hydraulic cylinder. First by an axial variable-displacement pump for controls flow to the cylinder. This configuration is commonly known as a hydrostatic transmission. Second by proportional valve powered by a constant-pressure source, such as a pressure compensated pump, drives ...
openaire   +1 more source

Influence of Pore Water on Energy Dissipation of Concrete and Its Quantitative Calculation Method

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Pore water is widely recognized as a critical factor that exerts a substantial impact on the mechanical strength of concrete materials. The present study centers on investigating the energy dissipation behavior of concrete under various conditions.
Xiaohong Chen, Pei Ge, Chengyi Ai, Wei Li, Yijun Wang, Junwen Zhou, Arnab Biswas   +6 more
wiley   +1 more source

Simulation research on control system of CST for scraper conveyor

Gong-kuang zidonghua, 2016
Start characteristics and electro-hydraulic servo control characteristics of CST for scraper conveyor were analyzed, compositions and working principles of both CST and its control system were introduced.
WANG Yabin, LIAN Zisheng, CUI Hongwei
doaj   +1 more source

Improving Aircraft Engines Prognostics and Health Management via Anticipated Model-Based Validation of Health Indicators [PDF]

, 2014
The aircraft engines manufacturing industry is subjected to many dependability constraints from certification authorities and economic background. In particular, the costs induced by unscheduled maintenance and delays and cancellations impose to ensure a
LAMOUREUX, Benjamin, MASSÉ, Jean-Rémi, MECHBAL, Nazih   +2 more
core   +6 more sources

Deterioration Mechanism of Fractured Coal–Rock Combined Body Under Coupled Chemical Corrosion and Time Effects

Geofluids, Volume 2026, Issue 1, 2026.
Addressing the stability issues of coal mine underground reservoir dams caused by long‐term erosion from highly acidic/alkaline mine water, this study investigates the mechanical property deterioration of fractured coal–rock combined bodies under the action of solutions with different pH values (3, 5, 7, and 9) and immersion times (7–35 days) through ...
Liya Yu, Guangbo Chen, Guanxian Kang, He Yongliang   +3 more
wiley   +1 more source

Influence of Vibration on Servo Valve Performance and Vibration Suppression in Electro-Hydraulic Shaking Table

Machines
With the rapid progress of industrial technology in recent years, servo controllers have the characteristics of precise control and short response time and are widely used in different industrial fields.
Tao Wang, Sizhuo Liu, Zhenyu Guo, Yuelei Lu   +3 more
doaj   +1 more source