EXPERIMENTAL STUDY OF MECHANICS OF ROCK FRACTURE BY WATER JET

Research output: Contribution to journalArticlepeer-review

Abstract

DYNAMIC PHOTOELASTICITY, HIGH-SPEED PHOTOGRAPHY AND EMBEDDED STRAIN GAUGES WERE USED TO STUDY PHENOMENA OF DEFORMATION AND FRACTURE OF BRITTLE MATERIALS BY WATER JET.A DEVICE FOR PRODUCING WATER JETS AT VELOCITIES BETWEEN 700 MS/SUP -1/ AND 2800 MS/SUP -1/ WAS USED.JET IMPACT ON PHOTOELASTIC MATERIALS WAS STUDIED BY MEANS OF A SPARK GAP CAMERA OPERATING AT 180,000 FRAMES PER SECOND AND BY MEANS OF A PULSED RUBY LASER.STRESS WAVE PROPAGATION, STRESS DISTRIBUTIONS AND FRACTURE WERE DISCUSSED.A THRESHOLD LEVEL OF 850 MS/SUP -1/ WAS FOUND BELOW WHICH JETS DID NOT PRODUCE STRESS WAVES BUT RESULTED IN LOCALIZED FRACTURE.JET IMPACT ON CONCRETE WAS STUDIED WITH EMBEDDED GAUGES.CRATER VOLUMES IN ROCK WERE FOUND TO VARY WITH POWERS OF UP TO 5.84 OF JET VELOCITY.(A) (MICROFICHE)

Original languageEnglish (US)
Journal[No source information available]
StatePublished - Jan 1 1975

ASJC Scopus subject areas

  • Engineering(all)

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