Results 31 to 40 of about 96,883 (287)

Research on Interdependence between Specific Rock Cutting Energy and Specific Drilling Energy

open access: yesApplied Sciences, 2023
A method based on extensive laboratory and field measurements was developed to determine the dependence of specific rock cutting energy (SEc) on specific drilling energy (SEd) for machines with different operating and design characteristics and similar ...
Davor Antoljak   +3 more
doaj   +1 more source

Innovative solution for reducing the run-down time of the chipper disc using a brake clamp device [PDF]

open access: yes, 2017
Wood-chippers are widely used machines in the forestry, urban and agricultural sectors. The use of these machines implies various risks for workers, primarily the risk of contact with moving and cutting parts.
Cecchini, Massimo   +6 more
core   +1 more source

High - speed power hydraulic actuator of reciprocating motion [PDF]

open access: yesE3S Web of Conferences, 2023
As an object of research in this paper, we use a hydro-mechanical system of high-speed technological equipment with reciprocating movement of the output link on the example of a cyclic perforating press hammer with a force of 1600 kN and a speed of up to
Golubeva Olesya   +2 more
doaj   +1 more source

A study on stabilization of operation time for hydraulic operating circuit breaker (Stability of hydraulic operation stabilizing system holding constant high pressure)

open access: yesNihon Kikai Gakkai ronbunshu, 2016
Stability of a hydraulic operation stabilization system during valve returning motion was investigated by the measurement and numerical analysis of the hydraulic circuit.
Tohru YAMASHITA   +4 more
doaj   +1 more source

Advanced Exergy Analysis in the Dynamic Framework for Assessing Building Thermal Systems [PDF]

open access: yes, 2019
This work applies the Dynamic Advanced Exergy Analysis (DAEA) to a heating and domestic hot water (DHW) facility supplied by a Stirling engine and a condensing boiler. For the first time, an advanced exergy analysis using dynamic conditions is applied to
Picallo-Perez, Ana   +3 more
core   +1 more source

Experimental campaign tests on ultra micro gas turbines, fuel supply comparison and optimization [PDF]

open access: yes, 2018
The increasing demand for miniaturized radio-controlled vehicles inspired the following research. The uses of these unmanned miniaturized/micro vehicles range from aero-modeling to drones for urban control and military applications too.
Capata, Roberto, Saracchini, Matteo
core   +2 more sources

Construction of a Bearing Testing Apparatus to Assess Lifetime of Large-Scale Bearings

open access: yesCommunications, 2009
This article discusses steps towards the design, construction and production of a device used for lifetime assessment of large-scale bearings. The machine is reviewed as a mechatronic entity, comprised of three parts - mechanical, electro technical and ...
Slavomir Hrcek   +4 more
doaj   +1 more source

DESIGN AND STUDY OF DRIVE SWIVEL JOINTS FOR HYDRAULIC MANIPULATION SYSTEMS OF MOBILE TRANSPORT-TECHNOLOGICAL MACHINES [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2018
The paper presents the design and principle of operation of a new type of articulated connection of adjacent links of manipulation systems of mobile transport and technological machines – the drive swivel joints to provide a rotary rela-tive movement of ...
Lagerev A.V., Lagerev I.A.
doaj   +1 more source

Analysis of the Batychron Research Project

open access: yesScientific Journal of Gdynia Maritime University, 2022
The article presents the research project called ‘Batychron’. Batychron is a flexible underwater bell patented by the Gdynia Maritime University as a ‘device applicable in hydraulic engineering for underwater transport and diving with the safety of ...
Julia Kosiek   +2 more
doaj   +1 more source

A new test methodology based on structural resonance for mode I fatigue delamination growth in an unidirectional composite [PDF]

open access: yes, 2013
A specific device has been set up to test by vibration resonance the mode I fatigue delamination growth onset of composite laminates. This test system, based on the DCB test specimen, is a mass-spring-specimen dynamic system designed to resonate.
Fressinet, Mathieu   +4 more
core   +4 more sources

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