New approach for assessing uniaxial compressive strength of rocks using measurement from nanoindentation experiments

Komadja, Gbétoglo Charles; Stanislas, Tido Tiwa; Munganyinka, Pauline; Anye, Vitalis C.; Pradhan, Sarada Prasad; Adebayo, Babatunde; Onwualu, Azikiwe Peter

doi:10.1007/s10064-022-02801-0

Cited by 8 publications

(1 citation statement)

References 46 publications

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“…where, ET and Ei are the elastic modulus of the sample and the indenter, respectively, GPa; 𝜇T and 𝜇i are the Poisson's ratio of the sample and the indenter, respectively, which are obtained by tests. The indenter is diamond material in the nanoindentation test, and 𝜇i and Ei are 0.07 and 1140 GPa, respectively [23].…”

Section: Nanoindentation Principlementioning

confidence: 99%

Micro-mechanical properties of the Song Dynasty stone tiles based on nanoindentation tests and homogenization approach

Wang,

Hu,

Wang

et al. 2024

Preprint

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The Song Dynasty stone tiles are one of the representatives of ancient Chinese building materials and reflect the technical level and the aesthetic concept of architecture in the Song Dynasty. Studying the mechanical properties of the Song Dynasty stone tiles is a great significance to design and develop restoration materials. The stone cultural relics are different from modern buildings, because of their particularity, cultural relics protection should preserve their original historical features as much as possible. It is a challenge to sample and perform traditional tests, which require numerous large specimens. The nanoindentation technique and the homogenization calculation method based on the Mori-Tanaka model were proposed to calculate the mechanical parameters of the Song Dynasty stone tiles. With the help of X-ray diffraction (XRD) and scanning electron microscope (SEM), the indentation morphology and mineral composition in indentation area were quantitatively analyzed. The mechanical properties, such as elastic modulus, hardness and fracture toughness of the Song Dynasty stone tiles in Henan, China, were investigated by nanoindentation test. The homogenization approach based on the Mori-Tanaka model was developed to upscale mechanical parameters from micro-scale to meso-scale, which were further compared with uniaxial compression results of non-standard samples. The results show that there is a positive linear correlation between elastic modulus, hardness and the fracture toughness under micro-scale. The average elastic modulus of red stone tiles and green stone tiles are 29.47GPa and 30.21GPa respectively. Compared with the parameter results obtained by upscaling, the deviation rates are 10.3% and 9.6%, respectively. The mechanical parameters of the Song Dynasty stone tiles obtained by nanoindentation test and homogenization approach is reliable.The proposed methods in this work provide the basis and reference for obtaining the mechanical strength index of the Song Dynasty stone tiles.

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Section: Nanoindentation Principlementioning

confidence: 99%

Micro-mechanical properties of the Song Dynasty stone tiles based on nanoindentation tests and homogenization approach

Wang,

Hu,

Wang

et al. 2024

Preprint

View full text Add to dashboard Cite

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Estimating the Mechanical Properties of Rocks and Rock Masses Based on Mineral Micromechanics Testing

Liu,

Xu,

et al. 2024

Rock Mech Rock Eng

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The mechanical properties of rocks, including the elastic modulus and uniaxial 28 compressive strength, play a crucial role in rock engineering design and analysis. However, in 29 specific working conditions such as high-stress rock mass with prominent core discing, 30 heavily jointed rock mass, and extraterrestrial rock mass, acquiring standard cylindrical rock 31 specimens that meet testing requirements can be challenging. To address this issue, we propose 32 an innovative methodology for estimating the mechanical properties of rocks and rock masses 33 based on mineral micromechanical testing. This methodology utilizes the phase-positioned 34 indentation technique and statistical deconvolution indentation technique to determine the 35 micromechanical properties of constituent minerals in rocks. Subsequently, by employing the 36 multiple linear regression technique and generalized means method, the micromechanical 37 properties of these minerals are upscaled to estimate the elastic modulus and uniaxial 38 compressive strength of rocks. Furthermore, the previously estimated properties of rocks are 39 further upscaled using the Hoek-Brown failure criterion and the geological strength index 40 system to estimate the mechanical properties of rock masses. Our findings demonstrate the 41 4 accuracy of this methodology in estimating the mechanical properties of rocks, validated 42 through comparisons with experimental data and other models. This methodology provides a 43 feasible tool for preliminary predictions of the mechanical behavior of rock masses, 44 particularly in situations where obtaining standard cylindrical rock specimens is challenging.

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Micro-mechanical Properties of Main Rock-Forming Minerals in Granite Under Microwave Irradiation

Bai,

Gao,

Xie

et al. 2024

Rock Mech Rock Eng

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New approach for assessing uniaxial compressive strength of rocks using measurement from nanoindentation experiments

Cited by 8 publications

References 46 publications

Micro-mechanical properties of the Song Dynasty stone tiles based on nanoindentation tests and homogenization approach

Micro-mechanical properties of the Song Dynasty stone tiles based on nanoindentation tests and homogenization approach

Estimating the Mechanical Properties of Rocks and Rock Masses Based on Mineral Micromechanics Testing

Micro-mechanical Properties of Main Rock-Forming Minerals in Granite Under Microwave Irradiation

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