Results 31 to 40 of about 202,741 (162)

Monitoring of Roof Bolting as an Element of the Project of the Introduction of Roof Bolting in Polish Coal Mines—Case Study

open access: yesEnergies, 2021
Roof bolting is the most popular type of support for underground mines’ workings. However, in Polish coal mines it is used only as a supplementary support.
Artur Dyczko   +5 more
doaj   +1 more source

A Novel 2D Micro-Displacement Measurement Method Based on the Elliptical Paraboloid

open access: yesApplied Sciences, 2019
The micro-displacement measurement system with 2D/3D has become increasingly important in the field of scientific research and technology application. In order to explore the application of an optical surface in micro-displacement measurement, a novel ...
Zekui Lv   +7 more
doaj   +1 more source

Thermo-Elastic Structural Analysis of a Machine Tool Using a Multi-Channel Absolute Laser Interferometer

open access: yesJournal of Machine Engineering, 2020
One of the main errors in the machining accuracy of machine tools is the displacement through thermal induced deformation. Modern design and construction methods aim to optimize the heat flow in the machine to achieve minimum displacement.
Jessica DEUTSCH   +6 more
doaj   +1 more source

Fast Displacement Estimation of Multiple Close Targets with MIMO Radar and MUSICAPES Method

open access: yesRemote Sensing, 2022
Interferometric radar is a hot research topic in manmade target displacement measuring applications, as it features high precision, a large operation range, and a remote multiple point measuring ability.
Jian Wang   +3 more
doaj   +1 more source

MIMO-SAR Interferometric Measurements for Structural Monitoring: Accuracy and Limitations

open access: yesRemote Sensing, 2021
Terrestrial Radar Interferometry (TRI) is a measurement technique capable of measuring displacements with high temporal resolution at high accuracy.
Andreas Baumann-Ouyang   +3 more
doaj   +1 more source

An Improved Large-Field Microscopic Speckle Interferometry System for Dynamic Displacement Measurement of MEMS

open access: yesPhotonics, 2021
The traditional microscopic speckle interferometer has limited applications in engineering due to its small field of view. In this paper, we propose a large-field microscopic speckle interferometer which embeds two doublet lens groups in the improved ...
Chenjia Gao   +5 more
doaj   +1 more source

Force-displacement measurements in tableting

open access: yesJournal of Pharmacy and Pharmacology, 1985
Abstract The influence of particle interaction, i.e. friction and bonding, on the net work (NETW) during compaction and on Heckel plots was tested by varying the particle size, the lubrication or the moisture content. The NETW was found to be significantly affected by particle interaction. The yield pressure, calculated from Heckel plots,
G, Ragnarsson, J, Sjögren
openaire   +2 more sources

A Large Range Linear Displacement Calibration System Based on Coordinate Measurement and Laser Interference

open access: yesMATEC Web of Conferences, 2018
The linear displacement sensor is widely used in industrial measurement. The linear displacement sensor with measuring range less than 200mm is usually measured on a universal length measuring instrument.
Jiang Zhihua, Zeng Yanhua, Cai Zhenglong
doaj   +1 more source

Design of Double-Layer Electrically Extremely Small-Size Displacement Sensor

open access: yesSensors, 2021
In this paper, a displacement sensor with an electrically extremely small size and high sensitivity is proposed based on an elaborately designed metamaterial element, i.e., coupled split-ring resonators (SRRs).
Yi-Dong Wang   +6 more
doaj   +1 more source

The Influence of Pillar Displacements on Geodetic Measurements [PDF]

open access: yesApplied Sciences, 2020
This paper deals with the effects that displacements of the measuring pillar have on precise geodetic measurements. The changes in the position of the control points on the object or its surroundings can only be determined with well stabilized and stable reference points.
Robert Močnik   +3 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy