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https://nap.nationalacademies.org/catalog/27432/critical-issues-in-transportation-for-2024-and-beyond

ULTRASONICS: INTENSE ENERGY WITH A DELICATE TOUCH

NEW APPLICATIONS IN ULTRASONICS ARE SUGGESTED IN MANUFACTURING OPERATIONS FOR ALL KINDS OF FORMING, MACHINING, JOINING, AND FINISHING OPERATIONS ON ANY METAL (EVEN THE REFRACTORIES), AT ROOM TEMPERATURE, WITH NO BURRS OR FRACTURES, AND WITH NO INDUCED STRESSES. THERE IS ALREADY WIDE SPREAD USE OF ULTRASONICS IN CLEANING JOBS, MACHINING OF CERAMICS, NONDESTRUCTIVE INSPECTION AND TESTING, AND THE ASSEMBLY OF PLASTIC PARTS. THE VARIOUS EFFECTS ACHIEVED BY ULTRASONICS ARE NOT COMPLETELY UNDERSTOOD. RESULTS OF ALL APPLICATIONS OF ULTRASONICS TO METAL WORKING ARE MORE EVIDENT THAN THE REASONS THAT IT WORKS. IMPROVEMENTS OVER OTHER FORMS OF METAL WORKING INCLUDE LOWERED TOOL LOADING, BETTER METAL FLOW, BETTER SURFACE FINISH, CHANGES IN RECRYSTALIZATION BEHAVIOR AND THEIR FORMATION TEXTURE AND CHANGES IN WORK HARDENING. ACCORDING TO ACCEPTED HYPOTHESES, THE EFFECTS ARE BROUGHT ABOUT BY TWO DIFFERENT ASPECTS OF HIGH-FREQUENCY SOUND WAVES: THE SURFACE EFFECT AND THE VOLUME EFFECT. THESE EFFECTS ARE DISCUSSED. DESIGN OF AN ULTRASONIC SYSTEM IS DESCRIBED FROM THE VIEWPOINT OF THE THREE BASIC SYSTEM COMPONENTS: AN ELECTRO-MECHANICAL TRANSDUCER (GENERATOR), A CONNECTING BODY (COUPLING), AND A TOOL, OR HORN. NONDESTRUCTIVE TESTING IS DESCRIBED USING HIGH-FREQUENCY SOUND WAVES IN VARIOUS APPLICATIONS. THE RANGE OF ULTRASONIC APPLICATIONS IS BEING EXTENDED BY NEW HIGHER- POWERED EQUIPMENT AND BY NEW EFFICIENCY THAT MAY EVENTUALLY PRODUCE TWICE THE RESULT WITH THE SAME POWER.

  • Supplemental Notes:
    • Vol 39, No 9, PP 103-110, 2 FIG, 9 PHOT
  • Authors:
    • Kevern, John
  • Publication Date: 1968-4-22

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  • Accession Number: 00216369
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 18 1994 12:00AM