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In-situ rock probing using the ultrasonic/sonic driller/corer (usdc)... The device is based on the novel Ultrasonic/Sonic Driller/Corer (USDC) technology, which was co-developed by the Non-Destructive Evaluation and Advanced Actuator laboratory (NDEAA

général - core.ac.uk - PDF: citeseerx.ist.psu.edu

Blaster-driller occupational analysisThe purpose of this report is to describe as accurately as possible the blaster-driller occupation as currently practiced in Quebec’s construction industry....

PDF: www.ccq.org

Design and analysis of ultrasonic horn for usdc (ultrasonic/sonic driller/corer),” spie smart structures and materials symposium, paper #5387-58... To address these key challenges to the NASA objective of planetary in-situ rock sampling and analysis, a drilling technology called ultrasonic/sonic driller/corer (USDC) was developed....

PDF: citeseerx.ist.psu.edu

Truck driver and driller discussing shooting well, southern california, 1936Photograph of truck driver and driller discussing shooting will, Southern California, 1936....

PDF: digitallibrary.usc.edu

Study on diffusive wear and hardness of driller of machining deep hole in sheet... The processing technology of machining deep hole in thin sheet is a kind of process using friction between driller and workpiece and plasticity of workpiece to form hole....

PDF: www.scientific.net