Experimental Investigation of the Size Effect of the Mode I Static Fracture Toughness of Limestone
Joint Authors
Zhang, Sheng
Wang, Longfei
Gao, Mingzhong
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-27
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
To study the size effect of the fracture toughness of notched semicircular bend (NSCB) specimens, the dimensionless energy release rate equation of the NSCB specimen was deduced on the basis of the Bažant energy release rate.
The influence of the crack length and the specimen size on the fracture toughness was analyzed.
The Bažant scale equation was obtained using the International Union of Laboratories and Experts in Construction Materials, Systems, and Structures (RILEM) method.
Finally, the Bažant equation was used to analyze the fracture toughness of an NSCB specimen with a radius of 75 mm, and the degree of variation was predicted.
The results show that a longer fracture is correlated with a lower fracture toughness value for the same sample size and that a larger specimen radius is correlated with a higher fracture toughness value for the same crack length.
The obtained Bažant equation correctly reflects the scale law of the fracture toughness of the NSCB specimen and provides highly accurate predictions of the fracture toughness of large specimens, with an error of not more than 3%.
The results obtained in this study provide a new reference method and theoretical basis for the future testing work.
American Psychological Association (APA)
Zhang, Sheng& Wang, Longfei& Gao, Mingzhong. 2019. Experimental Investigation of the Size Effect of the Mode I Static Fracture Toughness of Limestone. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1117185
Modern Language Association (MLA)
Zhang, Sheng…[et al.]. Experimental Investigation of the Size Effect of the Mode I Static Fracture Toughness of Limestone. Advances in Civil Engineering No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1117185
American Medical Association (AMA)
Zhang, Sheng& Wang, Longfei& Gao, Mingzhong. Experimental Investigation of the Size Effect of the Mode I Static Fracture Toughness of Limestone. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1117185
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1117185