Abstract
Artificial 3D-printed sandstone samples have the potential to replicate the physical characteristics of natural sandstones, allowing the creation of reproducible rock specimens. If successful, such materials could be used to replicate heterogeneous specimens for destructive testing in a number of different configurations and across different test types. In this study, we consider to what degree such artificial samples can match the tensile and compressive failure behavior of natural sandstones.
Specifically, 3D printed sandstone samples were subjected to both indirect Brazilian and unconfined compression tests. Two different types of 3D printed and three natural sandstones were tested, comparing their 1) tensile and compressive strength; 2) strain path to failure; 3) failure mode; and 4) fracture geometry after failure.
The artificial sandstone samples demonstrated tensile strengths and failure modes similar to those exhibited in weak natural sandstones. Moreover, the ratio of tensile to compressive strength was found to be similar across all materials tested including the 3D printed materials. Finally, the small-scale fracture surface roughness is comparable between artificial and natural specimens of similar tensile strength – suggesting similar grain- and macro-scale failure behavior between the 3D printed and natural sandstone samples.
Specifically, 3D printed sandstone samples were subjected to both indirect Brazilian and unconfined compression tests. Two different types of 3D printed and three natural sandstones were tested, comparing their 1) tensile and compressive strength; 2) strain path to failure; 3) failure mode; and 4) fracture geometry after failure.
The artificial sandstone samples demonstrated tensile strengths and failure modes similar to those exhibited in weak natural sandstones. Moreover, the ratio of tensile to compressive strength was found to be similar across all materials tested including the 3D printed materials. Finally, the small-scale fracture surface roughness is comparable between artificial and natural specimens of similar tensile strength – suggesting similar grain- and macro-scale failure behavior between the 3D printed and natural sandstone samples.
| Original language | English |
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| Publication status | Published - 2016 |
| Externally published | Yes |
| Event | Fall Meeting of the American-Geophysical-Union 2016 - San Francisco, United States of America Duration: 12 Dec 2016 → 16 Dec 2016 |
Conference
| Conference | Fall Meeting of the American-Geophysical-Union 2016 |
|---|---|
| Abbreviated title | AGU |
| Country/Territory | United States of America |
| City | San Francisco |
| Period | 12/12/16 → 16/12/16 |