Study on Semi-Circular Bending Test Using Digital Image Correlation Method

Abstract:

Fracture toughness J_C is sensitive to the characteristic of the material itself, as an effective indicator to appreciate the fracture resistance of the asphalt mixtures, is adopted by more and more researchers. The Semi-Circular Bending Test (SCB) can evaluate the fracture resistance of asphalt mixtures with different kinds of molding means. But currently, the fracture toughness J_C is measured by multi specimens (at least two), the experimental consumption is high, the single specimen calculation formula didnt appear. Using Digital Image Correlation Method (DICM) can compute the J-contour integral of a single specimen, compared with the results obtained from multi specimens, the repeatability is better, the accuracy is higher. Test and analytic results show that the DICM provide a new approach to study and investigate the fracture toughness J_C.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 421-429
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.421
• Online since: October 2013
• Authors: Peng Fei Li, Jing Hui Liu
• Keywords: Asphalt Mixture (AC), Digital Image Correlation Method (DICM), Fracture Resistance, Fracture Toughness, Semi-Circular Bending Test

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DOI: 10.1177/0361198106197000120

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