Statistics-assisted fracture modelling of small un-notched and large notched sandstone specimens with specimen-size/grain-size ratio from 30 to 900

•A linear closed-form model is proposed for quasi-brittle fracture of sandstone.•95 sandstone specimens with volume ratio close to 1000 were tested and analyzed.•One normal distribution considering scatters/reliability applies to all results.•The closed-form solution is a predictive model more suita...

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Veröffentlicht in:	Engineering fracture mechanics 2020-08, Vol.235, p.107134, Article 107134
Hauptverfasser:	Chen, Yi, Han, Xiangyu, Hu, Xiaozhi, Zhu, Wancheng
Format:	Artikel
Sprache:	eng
Schlagworte:	Boundary effect Closed form solutions Crack propagation Curve fitting Exact solutions Grain size Mathematical analysis Modelling Normal distribution Peak load Sandstone Size effect Size effects Statistical fracture Tensile strength
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