Results 31 to 40 of about 1,486,164 (204)

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

Energy Transformations in a Relativistic Engine

open access: yes, 2020
In a previous paper we have shown that Newton's third law cannot strictly hold in a distributed system of which the different parts are at a finite distance from each other.
Qin, Hong   +2 more
core   +1 more source

Mesoscale design of multifunctional 3D graphene networks [PDF]

open access: yes, 2016
Three-dimensional graphene networks are emerging as a new class of multifunctional constructs with a wide range of potential applications from energy storage to bioelectronics.
Mattevi, C, Sherrell, PC
core   +1 more source

Analysis of the Effect of the Tool Shape on the Performance of Pre-Cutting Machines during Tunneling Using Linear Cutting Tests

open access: yesApplied Sciences, 2022
Owing to several advantages, mechanical pre-cutting techniques were first introduced in the United States and subsequently used in Europe for tunneling.
Han-eol Kim   +4 more
doaj   +1 more source

Identification of coronal heating events in 3D simulations

open access: yes, 2017
The solar coronal heating problem is an open question since 1939. One proposed model for the transport and release of mechanical energy generated in the sub-phorospheric layers and photosphere is the nanoflare model that incorporates Ohmic heating which ...
Gudiksen, Boris V., Kanella, Charalambos
core   +1 more source

Mechanical properties and energy absorbing capabilities of Z-pinned aluminum foam sandwich [PDF]

open access: yes, 2019
Aluminum foam sandwich (AFS) structures are suitable for impact protection in lightweight structural components due to their specific energy absorption capability under compression.
Kadkhodapour, Javad   +2 more
core   +2 more sources

Specific Energy Based Characterization of Surface Integrity in Mechanical Machining

open access: yesProcedia Manufacturing, 2017
In mechanical machining operations, process mechanisms and machining efficiency can be characterized by the cutting tool geometry, process parameters and workpiece materials. These variables are vital parameters to evaluating the specific cutting energy demand as indication to sustainable manufacture. In today's manufacturing environment, where minimum
Balogun, Vincent A., Mativenga, Paul T.
openaire   +2 more sources

Intelligent Identification and Prediction of Roof Deterioration Areas Based on Measurements While Drilling

open access: yesSensors
During roadway excavation, the presence of roof deterioration zones, such as layered spaces and weak interlayers, significantly affects the stability of the surrounding rock.
Jing Wu   +5 more
doaj   +1 more source

Influence of PDC Cutter Diameter on Cutting Force

open access: yesShiyou jixie, 2023
PDC bit design needs to be customized depending upon the formation lithology characteristics, and especially the diameter of PDC cutter is an important parameter in bit design optimization.A series of laboratory simulation tests were conducted to explore
Wei Jiusen   +4 more
doaj  

Characterization of cassava starch processed in an internal mixer

open access: yesPolímeros, 2013
An internal mixer connected to a torque rheometer was used to investigate the effect of moisture content (13.2 to 46.8 g.100g- 1), rotation speed (13.2 to 46.8 rpm) and processing temperature (53.2 to 86.8 °C), applying a factorial central composite ...
Marcia Cristina da Silva   +4 more
doaj   +1 more source

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