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Studies of Wave and Fracture Propagation in Rock Media

I. M. Daniel / R. E. Rowlands

Experimental stress analysis techniques were used to study wave and fracture propagation in rock and rocklike media. Transparent birefringent specimens of CR-39, Plexiglas and Homalite-100 were loaded with explosive charges and isochromatic fringe patterns and crack propagation were recorded with a multiple spark camera operating at a rate of 200,000 frames per second. Dilatational wave, shear wave and crack propagation velocities were measured. Marble and granite plates were loaded explosively and isochromatic fringe patterns on bonded photoelastic coatings and moire fringe patterns were recorded with a Beckman and Whitley camera operating at rates from 250,000 to 1,000,000 frames per second. Dilatational, shear and Rayleigh wave velocities were measured. Experimental results obtained were discussed and interpreted for their relevance to the rapid excavation process in rock. (Modified author abstract)

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Studies of Wave and Fracture Propagation in Rock Media

I. M. Daniel / R. E. Rowlands

Experimental stress analysis techniques were used to study wave and fracture propagation in rock and rocklike media. Transparent birefringent specimens of CR-39, Plexiglas and Homalite-100 were loaded with explosive charges and isochromatic fringe patterns and crack propagation were recorded with a multiple spark camera operating at a rate of 200,000 frames per second. Dilatational wave, shear wave and crack propagation velocities were measured. Marble and granite plates were loaded explosively and isochromatic fringe patterns on bonded photoelastic coatings and moire fringe patterns were recorded with a Beckman and Whitley camera operating at rates from 250,000 to 1,000,000 frames per second. Dilatational, shear and Rayleigh wave velocities were measured. Experimental results obtained were discussed and interpreted for their relevance to the rapid excavation process in rock. (Modified author abstract)

Studies of Wave and Fracture Propagation in Rock Media

I. M. Daniel / R. E. Rowlands

Experimental stress analysis techniques were used to study wave and fracture propagation in rock and rocklike media. Transparent birefringent specimens of CR-39, Plexiglas and Homalite-100 were loaded with explosive charges and isochromatic fringe patterns and crack propagation were recorded with a multiple spark camera operating at a rate of 200,000 frames per second. Dilatational wave, shear wave and crack propagation velocities were measured. Marble and granite plates were loaded explosively and isochromatic fringe patterns on bonded photoelastic coatings and moire fringe patterns were recorded with a Beckman and Whitley camera operating at rates from 250,000 to 1,000,000 frames per second. Dilatational, shear and Rayleigh wave velocities were measured. Experimental results obtained were discussed and interpreted for their relevance to the rapid excavation process in rock. (Modified author abstract)

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Title:

Studies of Wave and Fracture Propagation in Rock Media

Contributors:

I. M. Daniel (author) / R. E. Rowlands (author)

Publication date:

1973

Size:

93 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Civil Engineering , Geology & Geophysics , Rock(Geology) , Construction , Crack propagation , Underground , Stresses , Strain(Mechanics) , Fracture(Mechanics) , Mechanical waves , Failure(Mechanics) , Deformation , Rock mechanics , Wave propagation , Stress analysis

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