The 3D-Printing Technology of Geological Models Using Rock-Like Materials

Feng, Xia‐Ting; Gong, Yanhua; Zhou, Yuanzhong; Li, Zhengwei; Liu, Xufeng

doi:10.1007/s00603-018-1703-y

Cited by 39 publications

(12 citation statements)

References 54 publications

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“…A main point of this manuscript is, finally, to illustrate how the 3D-printing technology can help with new experimental designs in Earth Sciences, and this technology is getting a growing attention from the community [Wang L. et al (2017), Squelch (2017), Wang et al (2018), Feng et al (2019, Braun et al (2020)], including the study of the frictional properties of 3D-printed fault analogs [Braun et al (2020)]. A direct continuation of the present work, for instance, could be to 3D-print and to test some faults surfaces beforehand filtered with various band-pass filters, in order to understand how the various wavelengths of the topography contribute to the global static friction coefficient, to the dynamical friction coefficient and to analyze the spatial distribution of the fault wear produced under various stresses and amounts of slip.…”

Section: Discussionmentioning

confidence: 99%

Frictional Anisotropy of 3D-Printed Fault Surfaces

et al. 2021

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The surface morphology of faults controls the spatial anisotropy of their frictional properties and hence their mechanical stability. Such anisotropy is only rarely studied in seismology models of fault slip, although it might be paramount to understand the seismic rupture in particular areas, notably where slip occurs in a direction different from that of the main striations of the fault. To quantify how the anisotropy of fault surfaces affects the friction coefficient during sliding, we sheared synthetic fault planes made of plaster of Paris. These fault planes were produced by 3D-printing real striated fault surfaces whose 3D roughness was measured in the field at spatial scales from millimeters to meters. Here, we show how the 3D-printing technology can help for the study of frictional slip. The results show that fault anisotropy controls the coefficient of static friction, with μS//, the friction coefficient along the striations being three to four times smaller than μS⊥, the friction coefficient along the orientation perpendicular to the striations. This is true both at the meter and the millimeter scales. The anisotropy in friction and the average coefficient of static friction are also shown to decrease with the normal stress applied to the faults, as a result of the increased surface wear under increased loading.

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Section: Discussionmentioning

confidence: 99%

Frictional Anisotropy of 3D-Printed Fault Surfaces

et al. 2021

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“…Our work shows how one can also characterise the mechanical anisotropy of rough rock contacts, for instance, along joints [39][40][41][42] and fractures [64,65] between or inside rock formations. A main point of this manuscript was, finally, to illustrate how the 3D-printing technology can help with new experimental designs in Earth Sciences, and this technology is getting a growing attention from the community [66][67][68][69]. A direct continuation of the present work, for instance, could be to 3D-print and to test some faults surfaces beforehand filtered with various band-pass filters, in order to understand how the various wavelengths of the topography contribute to the global static friction coefficient, to the dynamical friction coefficient and to analyse the spatial distribution of the fault wear produced under various stresses and amounts of slip.…”

Section: Discussionmentioning

confidence: 99%

Frictional anisotropy of 3D-printed fault surfaces

Vincent-Dospital,

Steyer,

Renard

et al. 2020

Preprint

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The surface morphology of faults controls the spatial anisotropy of their frictional properties, and hence their mechanical stability. Such anisotropy is only rarely studied in seismology models of fault slip, although it might be paramount to understand the seismic rupture in particular areas, notably where slip occurs in a direction different from that of the main striations of the fault. To quantify how the anisotropy of fault surfaces affects the friction coefficient during sliding, we sheared synthetic fault planes made of plaster of Paris. These fault planes were produced by 3D-printing real striated fault surfaces whose 3D roughness was measured in the field at spatial scales from millimeters to meters. Here, we show how the 3D-printing technology can help for the study of frictional slip. Results show that fault anisotropy controls the coefficient of static friction, with µ S// , the friction coefficient along the striations being three to four times smaller than µ S⊥ , the friction coefficient along the direction perpendicular to the striations. This is true both at the meter and the millimeter scales. The anisotropy in friction and the average coefficient of static friction are also shown to decrease with the normal stress applied to the faults, as a result of the increased surface wear under increased loading.

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“…Several studies have mixed the cement with printing materials when preparing the 3D printed specimens. For example, as is shown in Table 2, Feng et al [78] printed the specimens using 525R ordinary Portland cement and obtained the mechanical and failure characteristics of the specimens under uniaxial compression. The uniaxial compressive strength of specimens reached 60 MPa, and the elastic moduli reached about 5 GPa.…”

Section: Preparation Of Specimens In Laboratory Testsmentioning

confidence: 99%

Application of 3D Printing Technology in the Mechanical Testing of Complex Structural Rock Masses

et al. 2021

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In the engineering of underground construction, the discontinuous structures in rock mass have important influences on the mechanical behaviors of the subsurface of rock mass. The acquisition of mechanical parameters is the basis of rock mass engineering design, construction, safety, and stability evaluation. However, the mechanical parameters and failure characteristics of the same rock mass under different mechanical conditions cannot be obtained due to the limitations of specimen preparation techniques. In recent years, with the continuous development of 3D printing (3DP) technology, it has been successfully applied to the repetitive preparation of rock mass samples. The combinations of 3DP and other techniques, such as 3D scanning and CT scanning, provided a new approach to study the mechanical behavior of complex structural rock masses. In this study, through a comprehensive review of the technical progress, equipment situation, application fields, and challenges of the use of 3DP technology, the following conclusions were obtained: (1) 3DP technology has advantages over traditional rock mass specimen preparation techniques, and the verification of test results using 3D printed samples shows that the 3DP has broad application prospects in geotechnical engineering. (2) The combination of 3DP and other advanced techniques can be used to achieve the accurate reconstruction of complex structural rock masses and to obtain the mechanical and failure characteristics of the same rock mass structure under different mechanical boundary conditions. (3) The development of 3DP materials with high strength, high brittleness, and low ductility has become the major bottleneck in the application of 3DP in geotechnical engineering. (4) 3D printers need to meet the high precision and large size requirements while also having high strength and long-term printing ability. The development of 3D printers that can print different types of materials is also an important aspect of the application of 3DP in geotechnical engineering.

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The 3D-Printing Technology of Geological Models Using Rock-Like Materials

Cited by 39 publications

References 54 publications

Frictional Anisotropy of 3D-Printed Fault Surfaces

Frictional Anisotropy of 3D-Printed Fault Surfaces

Frictional anisotropy of 3D-printed fault surfaces

Application of 3D Printing Technology in the Mechanical Testing of Complex Structural Rock Masses

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