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 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.

An automatic test system and method for mechanical parameters of surrounding rock applicable to a TBM. The system includes: an aggregate portion collecting a rock slag in a TBM tunneling process in real time; a gripping portion gripping any rock slag from obtained rock slags; a visual processing apparatus performing three-dimensional imaging for a rock slag under test in an infrared ranging manner; calculating positions of loading points for an abrasiveness test experiment, and determining, based on a spacing between loading points, whether rock slag under test meets a requirement; and determining actual positions of loading points if the rock slag under test meets the requirement, and determining a region, on a surface of rock slag, that meets a set condition as an action region for abrasiveness test experiment; and a rock abrasiveness test apparatus automatically performing an abrasiveness test for a rock slag under test that meets a requirement.

An automatic test system and method for mechanical parameters of surrounding rock applicable to a TBM. The system includes: an aggregate portion collecting a rock slag in a TBM tunneling process in real time; a gripping portion gripping any rock slag from obtained rock slags; a visual processing apparatus performing three-dimensional imaging for a rock slag under test in an infrared ranging manner; calculating positions of loading points for an abrasiveness test experiment, and determining, based on a spacing between loading points, whether rock slag under test meets a requirement; and determining actual positions of loading points if the rock slag under test meets the requirement, and determining a region, on a surface of rock slag, that meets a set condition as an action region for abrasiveness test experiment; and a rock abrasiveness test apparatus automatically performing an abrasiveness test for a rock slag under test that meets a requirement.

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.

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.

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.

An apparatus for measuring mechanical properties of a downhole material, including first and second fixtures each of the fixtures containing a force application fixture to apply a stress to a specimen of the downhole material. A confining sleeve wraps around portions of the first and second fixtures to form a sealed specimen chamber defined by an inner surface of the confining sleeve and ends of the first and second fixtures nearest the specimen. Wall of a confining chamber contain the first and second fixtures, the confining sleeve and the specimen therein. The confining chamber holds a hydraulic fluid therein such that the hydraulic fluid can exert a confining pressure on the confining sleeve to maintain the seal of the specimen chamber and to maintain contact between the inner surface of the confining sleeve and the specimen when the stress is applied to the specimen. First channels pass though one or more of the walls of the confining chamber to add and remove the hydraulic fluid to and from the confining chamber. Second channels pass though one or more of the walls of the confining chamber and through one of the first and second fixtures to add and remove a pore space fluid to and from specimen chamber ports open to the specimen chamber to maintain a pore pressure at the specimen chamber ports that is equal to or less than the confining pressure while the stress is applied to the specimen. A system and method are also disclosed.

An apparatus for measuring mechanical properties of a downhole material, including first and second fixtures each of the fixtures containing a force application fixture to apply a stress to a specimen of the downhole material. A confining sleeve wraps around portions of the first and second fixtures to form a sealed specimen chamber defined by an inner surface of the confining sleeve and ends of the first and second fixtures nearest the specimen. Wall of a confining chamber contain the first and second fixtures, the confining sleeve and the specimen therein. The confining chamber holds a hydraulic fluid therein such that the hydraulic fluid can exert a confining pressure on the confining sleeve to maintain the seal of the specimen chamber and to maintain contact between the inner surface of the confining sleeve and the specimen when the stress is applied to the specimen. First channels pass though one or more of the walls of the confining chamber to add and remove the hydraulic fluid to and from the confining chamber. Second channels pass though one or more of the walls of the confining chamber and through one of the first and second fixtures to add and remove a pore space fluid to and from specimen chamber ports open to the specimen chamber to maintain a pore pressure at the specimen chamber ports that is equal to or less than the confining pressure while the stress is applied to the specimen. A system and method are also disclosed.