Results 91 to 100 of about 922,436 (391)
Method for machining holes in composite materials [PDF]
, 1987 A method for boring well defined holes in a composite material such as graphite/epoxy is discussed. A slurry of silicon carbide powder and water is projected onto a work area of the composite material in which a hole is to be bored with a conventional ...
Clemons, Johnny M. +4 more
core +1 more source
A Dynamic Model For A Drill In The Drilling Process
, 2008 {"references": ["D. D. Rosard, \"Natural Frequency of Twisted Cantilever Beams,\" in 1952\nPro. ASME Paper No. 52-A-15,", "G. W. Jarrett and P. C. Warner, \"The Vibration of Rotating Tapered Twisted Beam,\" ASME, Journal of Applied Mechanics, pp. 381-389,1953.", "O. Tekinalp and A. G.
Bo Wun Huang +3 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong +11 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.The share of technical thermoplastics is expected to grow further in the e‐mobility segment. In this study, a detailed temperature‐based tribological characterization of technical thermoplastics is performed. The tribological properties are discussed in terms of the dynamic mechanical properties of polymers at different ambient temperatures. A proof of
Harsha Raghuram +2 more
wiley +1 more source
Influence of Drill Pipe Type on Drilling and Slagging in Soft Coal Seam
Meikuang Anquan, 2020 In view of the problem of pressure air exhaust slag by borehole along the soft coal seam, the minimum air pressure and its calculation method are determined by analyzing the variation law of the air pressure and air volume in the two kinds of drilling ...
LI Liangwei, WU Wenbin, TANG Jianping
doaj +1 more source
Push-and-Twist Drillstring Assemblies [PDF]
, 2017 Deep drilling using a rigid drillstring requires the assembly and disassembly of multiple drill pipes. The interfaces between these pipes provide a challenge for automation because they must transmit large drilling forces and movements while, at the same
Firstbrook, David G. +5 more
core
The impact of vibration mechanism’ installation place on the process of retrieving stuck drill pipe [PDF]
, 2016 Purpose. The present paper studies the dependence of the dynamic oscillatory movements in the area of drill string sticking on the parameters of vibrating mechanism and place of its installation in the heavy weight drill pipe.
Levchuk, K, Moisyshyn, V
core +2 more sources
Advanced Engineering Materials, EarlyView.A new experimental setup, incorporating digital image correlation and infrared thermography in combination with inductive‐conductive heating for precise temperature control, is used to analyze the mechanical behavior and microstructural changes of sheet metal under complex thermomechanical test conditions that represent quench and partitioning ...
Christian Illgen +4 more
wiley +1 more source
Jurnal Fisika Flux, 2017 Abstrak: Pembongkaran over burden di Pit Central PT. SIS dilakukan dengan kegiatan peledakan. Sebelum kegiatan peledakan, dilakukan kegiatan pemboran untuk penyediaan lubang ledak dengan geometri dan pola tertentu.
Didiet Try Setiadi +2 more
doaj +3 more sources
Rock drill for recovering samples [PDF]
, 1969 Rotary impact-type rock drill for recovering rock ...
Ford, A. G.
core +1 more source