Results 1 to 10 of about 922,337 (292)
A parametric study for the design of an optimized ultrasonic-percussive planetary drill tool [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2016 Traditional rotary drilling for planetary rock sampling, in situ analysis, and sample return are challenging because the axial force and holding torque requirements are not necessarily compatible with lightweight spacecraft architectures in low-gravity ...
Harkness, Patrick +4 more
core +2 more sources
Interactive Data Exploration with Smart Drill-Down
IEEE International Conference on Data Engineering, 2016 We present {\em smart drill-down}, an operator for interactively exploring a relational table to discover and summarize "interesting" groups of tuples. Each group of tuples is described by a {\em rule}.
Garcia-Molina, Hector +2 more
core +2 more sources
Design and Development of a Warning System for Seed Blockage in a One Row Grain Drill [PDF]
Journal of Agricultural Machinery, 2021 Introduction The use of new technology in planters is one of the most important factors in the advancement of agricultural science. In the present study, an electronic warning system has been designed and implemented to prevent large seeds from falling ...
O Esmand +2 more
doaj +1 more source
Energies, 2021 Drilling volumes should be increased in order to increase hydrocarbon production, but this is impossible without the usage of high-quality drilling tools made of modern structural materials.
O. Bazaluk +5 more
semanticscholar +1 more source
Thermo-Mechanical and Delamination Properties in Drilling GFRP Composites by Various Drill Angles
Polymers, 2021 This manuscript aims to study the effects of drilling factors on the thermal-mechanical properties and delamination experimentally during the drilling of glass fiber reinforced polymer (GFRP).
U. Khashaba +5 more
semanticscholar +1 more source
Classifying the surrounding rock of tunnel face using machine learning
Frontiers in Earth Science, 2023 Accurately classifying the surrounding rock of tunnel face is essential. In this paper, we propose a machine learning-based automatic classification and dynamic prediction method of the surrounding rocks of tunnel face using the data monitored by a ...
Shubao Song +7 more
doaj +1 more source
Creation of promising technologies for producing holes in parts of a high-frequency ion engine
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2022 The article considers application areas of various machining methods for perforating holes in parts with unpredictable surface fluctuations. The most effective methods of obtaining holes in parts of a high-frequency ion engine are shown.
A. Yu. Ryazantsev +2 more
doaj +1 more source
Jurnal Pensil, 2021 Abstrak Tujuan penelitian ini adalah untuk meningkatkan kompetensi menghitung konstruksi balok sederhana melalui model Problem Based Learning dipadukan dengan Metode Drill.
Windri Eka Candri
doaj +1 more source
BMC Oral Health, 2020 Virtual implant planning systems integrate (cone beam-) computed tomography data to assess bone quantity and virtual models for the design of the implant-retained prosthesis and drill guides.
F. Kernen +5 more
semanticscholar +1 more source