On Electro-Magnetic Measurements of Rock Drill Performances
نویسندگان
چکیده
منابع مشابه
Stochastic Drill-string Dynamics with Uncertainty on the Imposed Speed and on the Bit-rock Parameters
A drill string is a slender structure with nonlinear dynamics; it is an equipment used in the oil industry to drill rock in the search of oil and gas. The aim of this paper is to model the uncertainties related to the speed imposed at the top and uncertainties related to the bit-rock parameters, and to investigate how these uncertainties propagate throughout the system. The continuum system is ...
متن کاملUltrathin Single‐Crystalline Boron Nanosheets for Enhanced Electro‐Optical Performances
Large-scale single-crystalline ultrathin boron nanosheets (UBNSs, ≈10 nm) are fabricated through an effective vapor-solid process via thermal decomposition of diborane. The UBNSs have obvious advantages over thicker boron nanomaterials in many aspects. Specifically, the UBNSs demonstrate excellent field emission performances with a low turn-on field, Eto, of 3.60 V μm-1 and a good stability. Fu...
متن کاملRock on! An elementary model of customer satisfaction with musical performances
Local and regional entertainers typically perform without a star performer or national recognition. These performers are often an incidental backdrop for the festivities. Is audience satisfaction with the group more than a summation of the satisfaction with individual performers; do factors surrounding the performance aid in determining audience satisfaction? Answers to these questions may allo...
متن کاملVirtual instrumentation for electro–analytical measurements
This paper deals with some applications of Virtual Instrumentation to electroanalytical measurements. Virtual Instruments (VIs) are software programmes that simulate the external appearance and functions of a real instrument on the screen of a computer. In this work, programmes have been developed to control the potential of a working electrode (through a suitable potentiostat), acquire the cur...
متن کاملKeer electro-optic measurements in liquid dielectrics
Kerr electro-optic technique has been used to measure the electric field distribution in high voltage stressed dielectric liquids, where the difference between refractive indices for light polarized parallel and perpendicular to the local electric field is a function of the electric field intensity. For transformer oil, the most widely-used insulating liquids in power apparatus and high voltage...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Mining and Metallurgical Institute of Japan
سال: 1964
ISSN: 0369-4194,2185-6729
DOI: 10.2473/shigentosozai1953.80.914_665