FraMCoS 2 1995 Zurich, Switzerland

Size Effect Aspects of Measurement of Fracture Characteristics of Quasibrittle Material

paper, represents the text of an introductory report at Cardiff workshop in 1 99 5, reviews size effect from two different viewpoints: 1) the need to eliminate or minimize the effect of specimen size on the measured material fracture characteristics,…

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Year 1995
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Abstract

paper, represents the text of an introductory report at Cardiff workshop in 1 99 5, reviews size effect from two different viewpoints: 1) the need to eliminate or minimize the effect of specimen size on the measured material fracture characteristics, and 2) the exploitation measured size effect on the nominal strent:,1:h for detennining fracture characteristics. Three methods of fracture testing are ..,"''~Ju ......... ,~ perspective of the size effect, and the merits and weaknesses various methods in regard to the size effect are pointed out. The parameters of three methods can be detennined by simple formulas and linear regression from measurements allowing calibration of two parameters of size effect law. WORDS: Concrete, quasibrittle materials, fracture mechanics, size effect, scaling, fracture testing, test specimens, standardization.