NASA NTRS · 20090008649
Ultrasonic/Sonic Anchor
Abstract
The ultrasonic/sonic anchor (U/S anchor) is an anchoring device that drills a hole for itself in rock, concrete, or other similar material. The U/S anchor is a recent addition to a series of related devices, the first of which were reported in "Ultrasonic/Sonic Drill/Corers With Integrated Sensors"
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Bar-Cohen, Yoseph, Sherrit, Stewart. 2009-02-01. Ultrasonic/Sonic Anchor. https://ntrs.nasa.gov/citations/20090008649
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