FUNDEMENTAL STUDIES IN THE CASE OF SONIC POWER FOR ROCK CUTTING

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 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. /TRRL/

• Corporate Authors:

  Ohio State University, Columbus

  Annual Technical Report
  ,   United States 
• Authors:
  • Graff, U F
• Publication Date: 1972-12

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 6 p.

Subject/Index Terms

• TRT Terms: Drilling; Electrical equipment; Excavations; Frequency (Electromagnetism); Pendulum tests; Rocks; Sonics; Transducers
• Old TRIS Terms: Sonic drilling
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00230473
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: R&d Rept
• Files: TRIS
• Created Date: Jan 11 1974 12:00AM