Micromechanics of failure in brittle geomaterials. Final technical report (for 7/1/1994 - 8/31/2000) Metadata

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  • Main Title Micromechanics of failure in brittle geomaterials. Final technical report (for 7/1/1994 - 8/31/2000)


  • Author: Wong, Teng-fong
    Creator Type: Personal


  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research (ER) (United States)


  • Name: Department of Geosciences, State University of New York at Stony Brook, Stony Brook, NY (United States)
    Place of Publication: United States


  • Creation: 2000-12-01


  • English


  • Content Description: The overall objective was to provide a fundamental understanding of brittle failure processes in porous and compact geomaterials. This information is central to energy-related programs such as oil and gas exploration/production, reservoir engineering, drilling technology, geothermal energy recovery, nuclear waste isolation, and environmental remediation. The effects of key parameters such as grain boundary structure and cementation, damage state, and load path on the deformation and failure model of brittle geomaterials are still largely unknown. The research methodology emphasized the integration of experimental rock mechanical testing, quantitative microscopy, and detailed analysis using fracture mechanics, continuum plasticity theory, and numerical methods. Significant progress was made in elucidating the micromechanics of brittle failure in compact crystalline rocks, as well as high-porosity siliciclastic and carbonate rocks. Substantial effort was expended toward applying a new quantitative three-dimensional imaging technique to geomaterials and for developing enhanced image analysis capabilities. The research is presented under the following topics: technique for imaging the 3-D pore structure of geomaterials; mechanics of compressive failure in sandstone; effect of water on compressive failure of sandstone; micromechanics of compressive failure: observation and model; and the brittle-ductile transition in porous carbonate rocks.
  • Physical Description: 4 p.


  • Keyword: Geothermal Energy
  • STI Subject Categories: 36 Materials Science
  • Keyword: Radioactive Wastes
  • Keyword: Reservoir Engineering
  • Keyword: Porous Materials
  • Keyword: Dilatancy
  • Keyword: Sandstones Geothermal Legacy
  • Keyword: Sandstones
  • Keyword: Interstitial Water
  • Keyword: Brittle-Ductile Transitions
  • STI Subject Categories: 58 Geosciences
  • STI Subject Categories: 15 Geothermal Energy
  • Keyword: Compressive Strength
  • Keyword: Geothermal Legacy
  • Keyword: Metamorphic Rocks
  • Keyword: Failures
  • Keyword: Rock Mechanics
  • Keyword: Progress Report
  • Keyword: Images
  • Keyword: Igneous Rocks
  • Keyword: Carbonate Rocks
  • STI Subject Categories: 02 Petroleum
  • Keyword: Fracture Mechanics
  • Keyword: Pore Structure
  • Keyword: Grain Boundaries
  • STI Subject Categories: 12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities
  • Keyword: Deformation


  • Other Information: PBD: 1 Dec 2000


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report


  • Text


  • Report No.: DOE/ER/14455--1
  • Grant Number: FG02-94ER14455
  • DOI: 10.2172/809810
  • Office of Scientific & Technical Information Report Number: 809810
  • Archival Resource Key: ark:/67531/metadc733923


  • Display Note: OSTI as DE00809810
  • Display Note: Medium: P; Size: 4 pages