A compact material testing system is configured to expose multiple samples housed within separate sample chambers to simulated fluid, thermal, and mechanical loading conditions. The system includes multiple independent load actuators positioned to extend actuator rods into corresponding sample chambers to apply mechanical loading to the test sample within. A fluid control system is included to bathe each test sample in a fluid medium and replenish the fluid medium within its sample chamber as needed. Each sample chamber includes a gas inlet and gas outlet to provide non-turbulent circulation and control of atmospheric composition above the fluid medium inside the chamber. A logic programmable controller is provided for input of test parameters and automated simultaneous control of mechanical loading, fluid flow, and temperature in the sample chambers.

Disclosed is a real-time nondestructive observation and two-phase seepage test system for a fracture of an in-situ fractured gas-bearing reservoir, which comprises a stress loading system, a high-voltage electric pulse fracturing operation system, a water-gas two-phase seepage system and an in-situ CT scanning system; the stress loading system comprises a pressure chamber, an axial pressure loading module and a confining pressure loading module; the high-voltage electric pulse fracturing operation system comprises a high-voltage electric pulse generation module, a high-voltage electric pulse signal monitoring module and a protection module; the water-gas two-phase seepage system comprises a water-gas pressure loading module and a flow data acquisition module; and the in-situ CT scanning system comprises a radiation source, a flat panel detector and a CT scanning detection mechanism.

Disclosed is a pressure-bearing device for simulating an excavation unloading test of a high-energy-storage rock mass. The pressure-bearing device comprises pressure-bearing blocks, a casing pipe and sealing rings, wherein the two pressure-bearing blocks are respectively arranged at two ends of a to-be-tested rock mass; the casing pipe can be arranged outside the to-be-tested rock mass and the pressure-bearing blocks in a sleeving mode and is attached to the to-be-tested rock mass and the pressure-bearing blocks; and the sealing rings are arranged outside the pressure-bearing blocks and the casing pipe in a sleeving mode, so that the sealing rings can be tightly pressed on the casing pipe and the pressure-bearing blocks through fastening elements. Further disclosed is a sealing method for simulating an excavation unloading test of a high-energy-storage rock mass.

An instrument and method for mechanical properties in situ testing of materials under a high temperature and complex mechanical loads are provided. The instrument includes: a support frame module used to provide a stable support and an effective vibration isolation for each functional module of the instrument; a high-frequency fatigue load applying module used to apply a high-frequency fatigue load on a tested sample; a static-dynamic mechanical load applying module used to apply a combination of static-dynamic tension/compression/bending loads on the tested sample; a high/low temperature applying module used to apply a variable temperature environment from a low temperature to a high temperature on the tested sample; and an in-situ monitoring module that may integrate a surface deformation damage measurement assembly, a three-dimensional strain measurement assembly, a microstructure measurement assembly, and an internal damage detection assembly according to a practical testing requirement.

A monitoring device includes an acquisition unit configured to acquire a captured image of a display panel of a control device configured to control an analyzer, an image storage unit configured to store the captured image, and a state determination unit configured to determine a state of the analyzer based on the captured image.

A soil parameter required when civil engineering/mechanical simulations for various grounds are performed is appropriately determined. A parameter determination device determines a parameter of a particle model used in a ground analysis system. The parameter determination device includes a triaxial compression test numerical analysis unit configured to determine the parameter so that the adhesive force and the shear resistance angle of a virtual ground respectively match the adhesive force and the shear resistance angle of an actual ground with a predetermined accuracy, and a pull-out test numerical analysis unit configured to determine the parameter so that a ground reaction force coefficient of the virtual ground matches a ground reaction force coefficient of the actual ground with a predetermined accuracy.

Provided is a material performance testing system under a fixed multi-field coupling effect in a hypergravity environment, including a hoisted sealed cabin, a bearing frame, a high-temperature furnace, a mechanical test device, and a buffer device. The bearing frame and the high-temperature furnace are fixedly mounted inside the hoisted sealed cabin. The bearing frame is covered on the high-temperature furnace. The buffer device is mounted at a bottom of the high-temperature furnace. Upper and lower ends of the mechanical test device are connected in a top of the bearing frame and the bottom of the high-temperature furnace. A sample is connected and mounted at an end of the mechanical test device.

The present invention relates to a jig for evaluating a buffer pad. The jig includes a first plate configured to be positioned on one surface of the buffer pad and configured to press the buffer pad; a second plate configured to be positioned on another surface of the buffer pad and configured to press the buffer pad from the other surface; and a magnet member configured to be positioned between the first plate and the second plate. A recessed portion, which is recessed to allow the magnet member to be disposed, is defined at an edge of at least one of the first plate and the second plate.

A predicting system and method for the uniaxial compressive strength of rock include a point loading strength test module, a longitudinal wave velocity test module, a rock rebound value test module and a strength prediction module, wherein the longitudinal wave velocity test module performs longitudinal wave velocity tests on the rock, and transfers the longitudinal wave velocity of the rock to the strength prediction module; the rock rebound test module performs rebound test on the rock, and transfers the rebound value of the rock to the strength prediction module; the point loading strength test module performs image acquisition on a fracture surface of the rock after being loaded and fractured by the point loading test, and calculates the area of the fracture surface; and the strength prediction module outputs a uniaxial compressive strength prediction result of the rock according to the received information and a preset prediction model.

Overburden stress is applied to a core rock sample in a sleeve. Pressure is applied to pores in the core rock sample. An overburden fluid pressure indicative of the overburden stress and pore fluid pressure indicative of the pore pressure is measured. A difference between the overburden fluid pressure and pore fluid pressure is determined. The measuring and determination of the difference is repeated over a period of time. A rate of change of the difference over the period of time is determined. An indication of the rate of change meeting a threshold level is output indicative of the overburden stress transferring into and throughout the core rock sample.