000004936 001__ 4936
000004936 005__ 20141119144606.0
000004936 04107 $$aeng
000004936 046__ $$k2002-06-02
000004936 100__ $$aLawler, John S.
000004936 24500 $$aFRACTURE PROCESSES IN CONCRETE STUDIED WITH SUBREGION SCANNING COMPUTER VISION

000004936 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004936 260__ $$bColumbia University in the City of New York
000004936 506__ $$arestricted
000004936 520__ $$2eng$$aAn understanding of the fracture process is necessary for design and utilization of quasi-brittle materials since cracking characterizes their failure. Subregion Scanning Computer Vision (SSCV) is an effective tool for observing these processes in an experimental setting. SSCV, based on Digital Image Correlation (DIC), is a full-field technique for quantitatively examining the development of cracks, with 0.5 micron resolution. DIC uses correlation matching to measure sub-pixel displacement in a sequence of digital images captured of a specimen undergoing failure. Using this technique, the complete behavior of specimens with multiple cracks at incremented levels of fracture can be investigated. SSCV improves on single-image DIC by dividing the specimen into 56 smaller subregions, each of which is imaged separately and so much improves measurement resolution. In this paper, examples of the results obtained in studies of crack growth in a model concrete under compressive loading and in a fiber-reinforced mortar under tensile loading are presented.

000004936 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004936 653__ $$aDigital Image Correlation, concrete, fiber-reinforcement, fracture processes

000004936 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004936 720__ $$aLawler, John S.$$iShah, Surendra P.
000004936 8560_ $$ffischerc@itam.cas.cz
000004936 8564_ $$s7827074$$uhttps://invenio.itam.cas.cz/record/4936/files/581.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004936 962__ $$r4594
000004936 980__ $$aPAPER