Links Between Machining Parameters and Surface Integrity in Drilling Ni-Superalloy [PDF]
, 2010 In aerospace industry, the manufacturing of critical parts (high energy components) requires an important validation process to guarantee the quality of the produced parts, and thus their fatigue lifecycle.
Alexis, Joël +3 more
core +3 more sources
RESULTS AND CHARACTERISTICS OF 5G HOLE DRILLING AND THE FIRST TAPPING OF LAKE VOSTOK
Лëд и снег, 2015 We present here a brief description of the drilling operations in the deep 5G hole at the Russian Vostok Station with more detailed account of the final stage of this long-term project successfully ended on February 5, 2012 with the first Lake Vostok ...
N. I. Vasil’ev +4 more
doaj +1 more source
Method for calculation of drilling-and-blasting operations parameters for emulsion explosives [PDF]
, 2019 Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well as physical and mechanical ...
Khomenko, O +3 more
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Abrasive water jet drilling of advanced sustainable bio-fibre-reinforced polymer/hybrid composites : a comprehensive analysis of machining-induced damage responses [PDF]
, 2018 This paper aims at investigating the effects of variable traverse speeds on machining-induced damage of fibre-reinforced composites, using the abrasive water jet (AWJ) drilling.
A Alberdi +44 more
core +3 more sources
Thermal osteonecrosis and bone drilling parameters revisited
Archives of Orthopaedic and Trauma Surgery, 2007 During the drilling of the bone, the temperature could increase above 47 degrees C and cause irreversible osteonecrosis. The result is weakened contact of implants with bone and possible loss of rigid fixation. The aim of this study was to find an optimal condition where the increase in bone temperature during bone drilling process would be minimal ...
Augustin, Goran +5 more
openaire +3 more sources
Improvement of hole drilling technology for ore drawing intensification [PDF]
, 2018 Purpose. The improvement of hole drilling for increasing the mineral recovery ratio by ore drawing improvement through blasting. Methods. The drilling parameters were examined for rock dumps.
Gaponenko, I +3 more
core +1 more source
Research and practice of high speed spiral compound drilling technology in complex weak coal seam
Meikuang Anquan, 2022 In view of the difficult problems of drilling and discharging slag and low hole forming rate in complex weak coal seam of Wangpo Coal Mine, the high speed spiral compound drilling technology is studied, and the performance characteristics of ZDY6000LR ...
LI Yingxi
doaj +1 more source
Fuzzy Logic Controller Design for Intelligent Drilling System [PDF]
, 2016 An intelligent drilling system can be commercially very profitable in terms of reduction in crude material and labor involvement. The use of fuzzy logic based controller in the intelligent cutting and drilling operations has become a popular practice in ...
Ahamed, Nizam Uddin +8 more
core +1 more source
Optimization Drilling Parameters Performance During Drilling in Gas Wells [PDF]
International Journal of Oil, Gas and Coal Engineering, 2017 The objective of the present work is to optimize drilling parameters such as WOB, ROP, RPM, flow rate and drill diameter of hole. The research contribution to investigation and analysis field data. This paper focuses on the optimization of drilling parameters.
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Weathered rock characterization using drilling parameters [PDF]
Canadian Geotechnical Journal, 2003 The characterization of weathered rocks by the use of drilling parameters is presented. Drilling parameters obtained from the drilling process monitoring system during the installation of soil nails into weathered rocks are used in this investigation. A new drilling index Pi, simplified from the concept of the specific energy, is used in an attempt to
Law, KT +4 more
openaire +3 more sources