Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Andrei Andraș"'
Publikováno v:
Sensors, Vol 23, Iss 1, p 453 (2023)
Thermostats operate alongside intelligent home automation systems for ensuring both the comfort of the occupants as well as the responsible use of energy. The effectiveness of such solutions relies on the ability of the adopted control methodology to
Externí odkaz:
https://doaj.org/article/6570d9f0621546458baec66f31fb7362
Autor:
Ildiko Brînaș, Andrei Andraș, Sorin Mihai Radu, Florin Dumitru Popescu, Iosif Andraș, Bogdan Ioan Marc, Alexandru Robert Cioclu
Publikováno v:
Energies, Vol 14, Iss 13, p 3892 (2021)
Starting from the general principles of material cutting, with applicability to coal and overburden excavation using bucket wheel excavators (BWEs), this paper proposes another method for calculating the drive power of the bucket wheel excavator by c
Externí odkaz:
https://doaj.org/article/987843d959f147adbf0121f11ad012d6
Autor:
Florin Dumitru Popescu, Sorin Mihai Radu, Andrei Andraș, Ildiko Brînaș, Daniela Ioana Budilică, Valentin Popescu
Publikováno v:
Materials; Volume 15; Issue 9; Pages: 3363
This paper studies both the thermal and mechanical behavior of brake system models in the case of the emergency braking of a mine hoist model. Using a step-by-step approach inspired by studies conducted on small brake systems with high rotation speed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b3d7b5164b36f24887b7f38773d0937
https://pubmed.ncbi.nlm.nih.gov/35591697
https://pubmed.ncbi.nlm.nih.gov/35591697
Autor:
Andrei Andraș, Sorin Mihai Radu, Ildiko Brînaș, Florin Dumitru Popescu, Daniela Ioana Budilică, Eva Biro Korozsi
Publikováno v:
Materials; Volume 14; Issue 24; Pages: 7897
Materials, Vol 14, Iss 7897, p 7897 (2021)
Materials
Materials, Vol 14, Iss 7897, p 7897 (2021)
Materials
Breakdown of stackers and excavators in opencast mines is possible because of operating, manufacturing and structural causes, and it produces high financial losses. These can be prevented by using various measures, including analyses and strength tes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01627425a6f8ef9a1ab5dfeedf10fbcd
Publikováno v:
New Trends in Production Engineering. 2:153-167
The paper deals with the modal analysis and frequency response analysis of a bucket wheel excavator (BWE) boom, obtained by simulation, based on a virtual model of an existing BWE boom. The boom, which generally is realized as a spatial truss, is the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed728464687ca21b393848c348b1012d
https://doi.org/10.2478/ntpe-2019-0016
https://doi.org/10.2478/ntpe-2019-0016
Autor:
Sorin Mihai Radu, Florin Dumitru Popescu, Andrei Andraș, Zoltán Virág, Ildiko Brînaș, Manuel-Ionuț Draica
Publikováno v:
Materials; Volume 15; Issue 19; Pages: 6558
In this study, the fatigue usage factors for Findley and Matake stress-based criteria were determined in the case of an MK5×2 mine hoist drum brake system subjected to cyclic maneuver braking. The study was conducted for this type of brake system, b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::011d63083d0f126c21a9b9f286107934
https://doi.org/10.3390/ma15196558
https://doi.org/10.3390/ma15196558
Autor:
Florin Popescu, Andrei Andraș, Iosif Andraș, Sorin Mihai Radu, Ildiko Brînaș, Bogdan Ioan Marc, Alexandru Robert Cioclu
Publikováno v:
Energies; Volume 14; Issue 13; Pages: 3892
Energies, Vol 14, Iss 3892, p 3892 (2021)
Energies, Vol 14, Iss 3892, p 3892 (2021)
Starting from the general principles of material cutting, with applicability to coal and overburden excavation using bucket wheel excavators (BWEs), this paper proposes another method for calculating the drive power of the bucket wheel excavator by c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b77511c634887e757b6a702fcec3c3d
Publikováno v:
Sustainability
Volume 13
Issue 5
Sustainability, Vol 13, Iss 2874, p 2874 (2021)
Volume 13
Issue 5
Sustainability, Vol 13, Iss 2874, p 2874 (2021)
The sustainable exploitation of raw materials, with improved safety and increased productivity, is closely linked to the development of mechanical mining installations. Mine hoists are designed for the transport of material, equipment and personnel b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::405e09794c12dc0dabccdc8813bdf2df
Publikováno v:
Annals of the University of Petroşani. Mechanical Engineering, Vol 25, Pp 17-32 (2024)
The shield of the SMA-2 utilizes a quadrilateral mechanism with a corner cylinder generating a lemniscate. The synthesis of the quadrilateral mechanism, its geometric and kinematic analysis in correlation with the geometry and kinematics of the entir
Externí odkaz:
https://doaj.org/article/ff19dcd4ed494437bbac5d7af67131c4
Publikováno v:
Applied Sciences, Vol 14, Iss 21, p 9875 (2024)
Open-pit mining generates significant amounts of waste material, leading to the formation of large waste dumps that pose environmental risks such as land degradation and potential slope failures. The paper presents a stability analysis of waste dump
Externí odkaz:
https://doaj.org/article/b97f64c77d3744eaa6936d92e0facbb7