Results 121 to 130 of about 381,789 (309)

Extraction and Application of Hydraulic Support Safety Valve Characteristic Parameters Based on Roof Pressure Data. [PDF]

Sensors (Basel), 2023
Xing K, Cheng J, Wan Z, Sun X, Yan W, Lv J, Xue M.   +6 more
europepmc   +1 more source

Hydrogel‐Based 3D‐Printable Stretchable Pressure Sensor

Advanced Materials Technologies, EarlyView.
We present a carbon‐black‐functionalized double‐network granular hydrogel (DNGH) pressure sensor capable of detecting pressures from 200 Pa, equivalent to a light finger touch, up to 500 kPa. The sensor exhibits signal drifts below 3.5% after 800 cycles and response times around 80 ms. Leveraging this broad sensing range, we 3D print this material into
Tianyu Yuan, Chenzhuo Li, Antonia Georgopoulou, John M. Kolinski, Esther Amstad   +4 more
wiley   +1 more source

Design of height measurement sensor for hydraulic support in fully mechanized working face

Gong-kuang zidonghua
A hydraulic support height measueement sensor based on Pascal's law is designed to address the difficulties in measuring the height, reliability, and stability of hydraulic supports in fully mechanized working faces.
GAO Siwei, GU Minyong, LI Dianpeng
doaj   +1 more source

Dynamic response of a coal rock caving impact tail beam for hydraulic support. [PDF]

Sci Rep, 2022
Zhao L, Han L, Zhang H, Jin X, Wu T, Yang S.   +5 more
europepmc   +1 more source

3D Printed Multimaterial Microfluidic Transistors

Advanced Materials Technologies, EarlyView.
We introduce a biocompatible, high resolution photopolymer resin that closely mimics the Young's Modulus (elasticity) and reversible stretchability (no hysteresis) of poly(dimethylsiloxane) (PDMS), enabling the fabrication of microfluidic transistors (i.e., microvalves capable of proportional amplification) by multimaterial stereolithography (mSLA ...
Alireza Ahmadianyazdi, Wei Huang, Kaustav A. Gopinathan, Ivan Stepanov, Lisa Horowitz, Ting‐Yuan Tu, Mehmet Toner, Albert Folch   +7 more
wiley   +1 more source

Precise and fast digital twin mapping method for hydraulic support attitude

Gong-kuang zidonghua
A precise and fast digital twin mapping method for hydraulic support attitude in fully mechanized working face is proposed to address the problems of low precision, large time delay, and difficulty in balancing precision and time delay in implementing ...
LIU Meng, FU Xiang, JIANG Yulong, LIU Bin, YANG Yuqi, QIN Yifan, SUN Yan   +6 more
doaj   +1 more source

Analysis of the vibration characteristics of tail beam of the hydraulic support under random coal gangue particle slip conditions. [PDF]

PLoS One, 2022
Wan L, Wang J, Ma D, Zeng Q, Li Z, Yang Y.   +5 more
europepmc   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

Advanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani, Carlo Antonini, Teresa Gatti, Mengjiao Wang   +3 more
wiley   +1 more source

The High Speed Water Tunnel three-component balance [PDF]

, 1955
An experimental program was initiated in the High Speed Water Tunnel to measure force coefficients for hydrofoils under cavitating conditions. This program necessitated either a new force balance or a major modification of the existing one.
Hotz, G. M., McGraw, J. T.
core  

Data-driven regional characteristic analysis and partition prediction of support load in deep well and ultra-long working face

Meitan kexue jishu
Accurate prediction of hydraulic support load plays an important role in improving the adaptability of support and the stability of surrounding rock control, where high-quality and large-scale time series data and effective prediction methods are needed.
Shixin GONG
doaj   +1 more source