Fundamental Studies in the Use of Sonic Power for Rock Cutting
Abstract
Preliminary studies in the penetration of rock faces with tools which are driven by sonic transducers, are reported in the system development section of this report. The high-power sonic transducers, which were developed in previous research programs, operate from fixed-frequency electrical supply systems, and are coupled to the tool by intermittent contact. Supply frequencies are in the 10 kHz range. The system analysis portion of the report relates to two areas of fundamental investigation. A study of sonic tool impact on rock concludes that the use of a simple rigid-mass model of the impact tool is suitable; elastic wave-effects within the tool are not of primary importance if short tools are considered. A study of system interactions during sonic drilling describes stress levels and energy transfer into various types of work surfaces including rock. Results are also reported on experiments of tool impact on rock and on a sonic transducer tip.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1971
- Accession Number
- AD0740808
Entities
People
- Karl F. Graff
Organizations
- Ohio State University