NDLI: Powder-collection system for ultrasonic/sonic drill/corer

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Powder-collection system for ultrasonic/sonic drill/corer

Content Provider	NASA Technical Reports Server (NTRS)
Author	Chang, Zensheu Bar-Cohen, Yoseph Blake, David Bao, Xiaoqi Bryson Sr., Charles Sherrit, Stewart
Copyright Year	2005
Description	A system for collecting samples of powdered rock has been devised for use in conjunction with an ultrasonic/sonic drill/corer (USDC) -- a lightweight, lowpower apparatus designed to cut into, and acquire samples of, rock or other hard material for scientific analysis. The USDC includes a drill bit, corer, or other tool bit, in which ultrasonic and sonic vibrations are excited by an electronically driven piezoelectric actuator. The USDC advances into the rock or other material of interest by means of a hammering action and a resulting chiseling action at the tip of the tool bit. The hammering and chiseling actions are so effective that unlike in conventional twist drilling, a negligible amount of axial force is needed to make the USDC advance into the material. Also unlike a conventional twist drill, the USDC operates without need for torsional restraint, lubricant, or a sharp bit. The USDC generates powder as a byproduct of the drilling or coring process. The purpose served by the present samplecollection system is to remove the powder from the tool-bit/rock interface and deliver the powder to one or more designated location(s) for analysis or storage
File Size	195710
Page Count	1
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20110014691
Archival Resource Key	ark:/13960/t36160m1n
Language	English
Publisher Date	2005-01-01
Access Restriction	Open
Subject Keyword	Mechanical Engineering Piezoelectricity Collection Drills Powder Particles Drill Bits Ultrasonics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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