A device and method of using infrared radiation to observe coal rock fracture development processes, for use in experiments to monitor coal rock fracture development using infrared radiation comprises three telescopic box bodies sleeved together. An infrared thermal imager connected to a computer is arranged at the front end of the telescopic box bodies, and a light-blocking plate is installed on a rear end. The distance between a coal rock test block and a lens of the infrared thermal imager can be freely adjusted via the three telescopic box bodies. The telescopic box bodies are installed on a rock press, and a loading test is performed on the coal rock test block.

Techniques for determining rock properties include exerting a compressive load with a test apparatus across a rock sample that includes a specified length-to-diameter ratio; measuring, with a strain gauge, a strain on the rock sample during the compressive loading; determining, based at least in part on the compressive load, a mechanical property of the rock sample; and determining, based at least in part on the measured strain and the compressive load, an elastic property of the rock sample.

A reflective granular composition including a reflective pigment material including a majority of kaolin clay and a hardening additive including a sodium salt or another salt. A method for making a reflective granular composition includes the steps of mixing together a reflective pigment material including a majority of kaolin clay and a hardening additive including a sodium salt or another salt to form a particulate mixture, forming a slurry from the particulate mixture by adding to the particulate mixture water and a binder material, granulating the slurry, drying the granulated slurry, and kilning the dried, granulated slurry to form the reflective granular composition. Methods of analyzing the strength of a reflective granular composition are also disclosed.

A device and method of using infrared radiation to observe coal rock fracture development processes, for use in experiments to monitor coal rock fracture development using infrared radiation comprises three telescopic box bodies sleeved together. An infrared thermal imager connected to a computer is arranged at the front end of the telescopic box bodies, and a light-blocking plate is installed on a rear end. The distance between a coal rock test block and a lens of the infrared thermal imager can be freely adjusted via the three telescopic box bodies. The telescopic box bodies are installed on a rock press, and a loading test is performed on the coal rock test block.

A method of facilitating hardness measurement of a rock sample involves receiving force information representing forces applied to the rock sample during roll crushing, determining size information representing a size of the rock sample, and determining, based on at least the force information and the size information, at least one hardness parameter representing hardness of the rock sample. A method of facilitating hardness measurement of a rock sample from a drill core involves receiving force information representing forces applied to the rock sample during roll crushing of the rock sample, determining, based on at least the force information, at least one hardness parameter representing hardness of the rock sample, and associating the at least one hardness parameter with at least one location from which the rock sample was extracted. Other apparatuses, methods, systems, and computer-readable media are provided.

An apparatus for providing pressure to a sample. The apparatus comprises a housing having a cavity, an elastomer within the cavity, and a means for providing pressure to the elastomer within the cavity. The housing and the elastomer are configured to allow a sample to be inserted into the cavity, such that the sample is surrounded by the elastomer and such that the elastomer and the sample together fill the cavity.

A method of facilitating hardness measurement of a rock sample involves receiving force information representing forces applied to the rock sample during roll crushing, determining size information representing a size of the rock sample, and determining, based on at least the force information and the size information, at least one hardness parameter representing hardness of the rock sample. A method of facilitating hardness measurement of a rock sample from a drill core involves receiving force information representing forces applied to the rock sample during roll crushing of the rock sample, determining, based on at least the force information, at least one hardness parameter representing hardness of the rock sample, and associating the at least one hardness parameter with at least one location from which the rock sample was extracted. Other apparatuses, methods, systems, and computer-readable media are provided.

A direct tensile and acoustic testing machine under rock seepage includes a sample and a support frame. A top of the support frame is fixed with a top plate, a bearing plate is provided above the top plate, the bearing plate is provided with a plurality of vertical force transferring rods, the force transferring rods vertically penetrate through the top plate and sliding fit with the top plate, lower ends of the force transferring rods are provided with a tensile base, a top of the tensile base is provided with a lower clamp holder, a bottom of the top plate is provided with an upper clamp holder, and a clamp center of the upper clamp holder overlaps with a clamp center of the lower clamp holder. An acoustic component and a seepage component are provided in the upper clamp holder and the lower clamp holder.

A test apparatus for a ceramic matrix composite (CMC) component. The test apparatus includes a first support member configured to mechanically support a CMC component from a first side. The CMC component includes a T-joint and a pinhole. The test apparatus includes a second support member configured to mechanically support the CMC component from a second side opposite the first side. The first support member and the second support member are configured to be forced toward each other to cause the CMC component to fail at the pinhole and not at the T-joint.

A solid pharmaceutical dosage form testing apparatus and a method are presented. The solid pharmaceutical dosage form testing apparatus includes a striker component, an impact platform, a sensor data acquisition system, and a solid dosage form placement mechanism. The solid dosage form placement mechanism has first and second push components that are movable toward each other to position a solid dosage form at an impact site. The method includes performing an impact strike test on a first plurality of solid dosage forms, and measuring a plurality of peak impact force values. The method may include performing a drop test on a second plurality of solid dosage forms, and measuring a plurality of physical defect rates. The method may include determining a model that describes a relationship between peak impact force values and physical defect rates, and determining, based on the model, a predicted physical defect rate.