An apparatus for performing a contact mechanics test on a substrate includes a stylus, a core configured to engage the stylus against the substrate, a stylus engagement mechanism configured to induce a contact load or a penetration depth to the stylus, a core engagement mechanism configured to maintain contact of the core and to move the core along the substrate surface, a frame configured to be fixed with respect to the apparatus or to be moved together with the core engagement mechanism as an assembly, a frame engagement mechanism configured to engage the frame with the substrate surface; and a substrate monitoring device configured to measure characteristics of substrate contact response and/or collect material machined from the substrate. Methods of performing a contact mechanics test are also provided.

Disclosed is a test method for measuring a force situation of a tree-shaped spatial node, and the test method is realized by a reaction frame device. The reaction frame device includes a raft foundation and a reaction frame fixedly mounted on the raft foundation, a cavity is formed inside the reaction frame to accommodate a tree-shaped spatial node; a main pipe of the tree-shaped spatial node is plumb-fastened to the raft foundation, and a force measurement assembly is arranged in an upper space of the cavity, which can simultaneously apply force of a set value to each branch pipe in the tree-shaped spatial node and detect a combined force applied to the tree-shaped spatial node. The method can simultaneously and accurately apply static force to each branch pipe, thereby effectively predicting the overall working condition of the tree-shaped spatial node.

The present disclosure provides an in-situ testing system of metal materials under high temperature and complex loads. The testing system includes a fatigue testing unit, a high-temperature loading unit, a signal detecting unit and a base. The fatigue testing unit is configured for pre-tightening a sample and then performing a fatigue testing on the sample. The high-temperature loading unit is configured for heating the sample to a high temperature. The signal detecting unit includes a pressure sensor and a displacement sensor. The pressure sensor is configured for monitoring the tensile force on the sample. The displacement sensor is configured for monitoring the displacement of the sample after being stretched during the pre-tightening of the sample. The base is configured for bearing the fatigue testing unit, the high-temperature loading unit and the signal detecting unit, and can be positioned on a scanning electron microscope stage or an open microscopic device.

A method of analyzing influencing factors of a contribution rate of elastic energy of a top plate during catastrophe of a coal body; the specific steps are: taking a core on site and processing the core into a standard test piece; obtaining, by means of an indoor mechanical test, elastic moduli of the top plate and of gas-containing coal, respectively; substituting the obtained elastic moduli and thicknesses of the top plate and of the gas-containing coal into a calculation formula so as to obtain the contribution rate of the elastic energy of the top plate; and analyzing the influence of the contribution rate of the elastic energy of the top plate in the two situations of configuring the same thickness ratio and a different elastic modulus ratio and the same elastic modulus ratio and a different thickness ratio. The method has important theoretical significance and practical engineering value.

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.

Bend test apparatus (100) for a hydraulic hose (200), the apparatus (100) comprising a main rack (10), at least one sliding rail (11) extending in a longitudinal direction (L) and a carriage (13) which is slidable on the sliding rail (11) in the longitudinal direction (L) and which can be displaced by an actuator (20), wherein the apparatus (100) further comprises a first fixture (1) that is rigidly attached to the main rack (10) to retain a first end (201) of the hydraulic hose (200) and a second fixture (2) that is rigidly attached to the carriage (13) to retain a second end (201) of the hydraulic hose (200), and wherein the apparatus (100) comprises a load cell (30) that is attached between the carriage (13) and the actuator (20) so as to detect a force (F) which is applied via the actuator (20) onto the carriage (13) and thereby onto the hydraulic hose (200) in the longitudinal direction (L).

A mechanical testing system for deformable samples, such as gels or tissues, is disclosed. The system includes a container for holding a liquid, and a floatable platform configured to float on the liquid. The platform includes attachments for connecting to a deformable sample and a force sensor assembly. The system allows for the application of unidirectional tension to the sample and the measurement of the resulting force by the force sensor assembly. The design of the system minimizes off-target forces and sample vibration, and allows for submerged testing and simultaneous imaging of the sample. The system is particularly suitable for testing small, soft materials such as extracellular matrix polymers.

A glass strength evaluation apparatus includes a support unit, a plate disposed on the support unit and including a surface on which a glass article, which is a target to be tested, is disposed, a fixing jig disposed on the plate and a power unit lifting up or down the fixing jig in a vertical direction toward the surface of the plate. The fixing jig includes a body portion, which extends in the vertical direction and lower fixing bolts. A press-fitting member insertion opening is recessed from a bottom of the body portion to extend in an upward direction, lower fixing bolt insertion holes penetrate the body portion, from one side of the body portion, in a first horizontal direction intersecting the vertical direction, to be extended to the press-fitting insertion opening, and lower fixing bolts are coupled into the lower fixing bolt insertion holes.

Techniques are described for configuring a materials test system to perform materials tests on sample material(s). Such a materials test system may include a test controller and materials test device(s), which are connected to the test controller. In an embodiment, the materials test system receives input selecting a test controller type for the test controller of the materials test system and input for configuring a materials test device. Without the materials test system being connected with the test controller and the materials test device, generating configuration data based on the inputs. The generated configuration data may be loaded into the test controller, thereby configuring the materials test system.

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.