Results 31 to 40 of about 100,934 (288)

Advanced Wind Turbine Program Next Generation Turbine Development Project: June 17, 1997--April 30, 2005 [PDF]

open access: yes, 2006
This document reports the technical results of the Next Generation Turbine Development Project conducted by GE Wind Energy LLC. This project is jointly funded by GE and the U.S. Department of Energy's National Renewable Energy Laboratory.The goal of this
GE Wind Energy, LLC
core   +1 more source

Predictive plots for conical pick performance using mechanical and elastoplastic properties of rocks

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2020
Conical picks are by far the most widely used drag type cutting tools employed on partial face rock excavation machines. The cutting force and specific energy are two important design parameters for the conical pick performance, and the rock cutting ...
Serdar Yasar
doaj   +1 more source

Analysis of the effect of the cutting speed on specific cutting energy in turning process [PDF]

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract In machining process, the cutting temperature and cutting force produced is an important parameter need to be control or reduce. The cutting temperature and cutting force will effected the tool life thus effected the tool cost.
openaire   +1 more source

Mechanical specific energy versus depth of cut in rock cutting and drilling

open access: yesInternational Journal of Rock Mechanics and Mining Sciences, 2017
Abstract The relationship between Mechanical Specific Energy (MSE) and the Rate of Penetration (ROP), or equivalently the depth of cut per revolution, provides an important measure for strategizing a drilling operation. This study explores how MSE evolves with depth of cut, and presents a concerted effort that encompasses analytical, computational ...
Yaneng Zhou   +3 more
openaire   +2 more sources

Research on collaborative optimization of cutting and conveying of separated auger drill

open access: yesMeitan kexue jishu, 2023
Auger drilling tool is widely used in mining, exploration and security and other fields, is an important part of mine equipment, aiming at the best cutting speed and conveying speed of drill tool mismatch.
Qiang ZHANG   +4 more
doaj   +1 more source

Studies on cutting temperature by dimensional analysis (Influence of cutting conditions in turning with Al2O3 cutting tool)

open access: yesNihon Kikai Gakkai ronbunshu, 2018
The equation, which expresses the influence of cutting conditions such as cutting speed, depth of cut and feed rate on the cutting temperature of the workpiece, is investigated by the dimensional analysis.
Takashi UEDA   +3 more
doaj   +1 more source

Experimental investigation on the influence of microwave exposure on the cutting performance of TBM disc cutter cutting of hard rocks

open access: yesResults in Engineering, 2021
Microwave energy has been demonstrated to be able to assist mechanical rock breaking in geotechnical and mining engineering. The aim of this research is to study the influences of the interaction between microwave energy and rocks on the performance of ...
Gaoming Lu   +3 more
doaj   +1 more source

Estimating specific energy from the brittleness indexes in cutting metallic ores [PDF]

open access: yesJournal of the Southern African Institute of Mining and Metallurgy, 2016
Specific energy (SE) is a very useful parameter for assessing rock excavation by machine. Predicting the SE from the brittleness will be practical, especially for preliminary studies, due to the fact that determining the SE from cutting tests is difficult and expensive. In this study, the predictability of the SE from different brittleness concepts was
Çomaklı, R.   +3 more
openaire   +4 more sources

Effect of Cone Indenter Hardness on Specific Energy of Rock Cutting

open access: yesSüleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2017
The effects of rock mechanics parameters on performance of various tunneling and excavation machines used in tunneling application has been an important issue in conventional, NATM, and TBM tunneling. Mechanical feature of machine performance is important for cutting specific energy and cutting parameters.
DOĞRUÖZ, Cihan, BÖLÜKBAŞI, Naci
openaire   +6 more sources

A 6-components mechanistic model of cutting forces and moments in milling

open access: yesForces in Mechanics, 2022
Most of the cutting models developed in the literature attest only to the presence of cutting forces in the balance of mechanical energy resulting from cutting.
Maël Jeulin   +3 more
doaj   +1 more source

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