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Equivalence between Two Fracture Methods

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Abstract:

Two fracture parameters, i.e., the initiation fracture energy release GIcini and the unstable fracture energy release GIcun, are termed to distinguish the different crack propagation stages. Totally ten temperatures varying from 20oC to 600oC and the specimen size of 230×200×200 mm with initial-notch depth ratios 0.4 were considered. Wedge-splitting method is adopted to measure the loadcrack mouth opening displacement curves (PCMOD) and double-G fracture parameters are experimentally determined. In order to verify the feasibility of this model in post-fire concrete, the effective double-K fracture parameters converted by double-G fracture parameters using are compared with the double-K fracture parameters.

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Periodical:

Advanced Materials Research (Volume 746)

Pages:

337-341

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.746.337

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Online since:

August 2013

Authors:

Zhou Dao Lu, Ji Feng Chai

Keywords:

Energy Release Rate, Post-Fire, Wedge-Splitting Method

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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