Mjölnir: a miniature triaxial rock deformation apparatus for 4D synchrotron X-ray microtomography.
Mjölnir: a miniature triaxial rock deformation apparatus for 4D synchrotron X-ray microtomography.
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DOI：
10.1107/s160057752001173x
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发表时间：
2020-11-01
影响因子：
2.5
通讯作者：
Flynn M
中科院分区：
文献类型：
--
作者：
Butler I;Fusseis F;Cartwright-Taylor A;Flynn M
介绍了一种用于地球科学中岩石变形和化学-力学耦合过程四维研究的X射线透明三轴变形室的设计、构造和组装细节。通过部署在四个不同的同步加速器光束线上，展示了该单元的便携性和灵活性。一个X射线透明的实验三轴岩石变形装置，这里命名为“Mjölnir”，使调查脆性岩石变形和破坏，以及耦合的热，化学和机械过程相关的一系列地球地下环境。Mjölnir设计用于外径达3.2 mm、长度达10 mm的圆柱形样品，可达到50 MPa的围压和超过600 MPa的轴向载荷。 加热器的增加将实验范围扩展到140°C。在同步加速器光束线上部署Mjolnir表明可以在几秒钟到几分钟内获得完整的3D数据集，这意味着可以对变形过程进行完整的4D研究。Mjölnir由现成的材料和组件制成，完整的技术图纸包含在支持信息中。
The design, construction and assembly details for an X-ray transparent triaxial deformation cell for 4D investigations of rock deformation and coupled chemical–mechanical processes in the geosciences are presented. The portability and flexibility of the cell are demonstrated by deployment on four different synchrotron beamlines. An X-ray transparent experimental triaxial rock deformation apparatus, here named ‘Mjölnir’, enables investigations of brittle-style rock deformation and failure, as well as coupled thermal, chemical and mechanical processes relevant to a range of Earth subsurface environments. Designed to operate with cylindrical samples up to 3.2 mm outside-diameter and up to 10 mm length, Mjölnir can attain up to 50 MPa confining pressure and in excess of 600 MPa axial load. The addition of heaters extends the experimental range to temperatures up to 140°C. Deployment of Mjolnir on synchrotron beamlines indicates that full 3D datasets may be acquired in a few seconds to a few minutes, meaning full 4D investigations of deformation processes can be undertaken. Mjölnir is constructed from readily available materials and components and complete technical drawings are included in the supporting information.