A method for determining constitutive parameters of a subject material includes collecting a force sensor output from a force sensor unit for measuring reactive forces applied to a deformation tool from a subject material travelling in a predefined direction relative to the deformation tool, collecting an image sequence output from a camera unit depicting a deformation zone formed between the deformation tool and the subject material as the subject material is plastically deformed by the deformation tool, and estimating a constitutive parameter of the subject material based on the force sensor output and the image sequence output.

A dynamic mechanical analysis system provides an actuator that imparts expansion and contraction forces (e.g. shear force) to a viscoelastic material at high frequencies. Such high frequency analysis allows for the direct and accurate measurement of the characteristics of the material at high expansion/contraction frequencies directly, without the use of additional predictive analysis techniques, such as time-temperature superposition. The system also utilizes a clamping system, whereby two different sections of the viscoelastic material are held in place between by a pair of fixed clamps and a force member that is moved by the actuator. As such, the system is able to subject the viscoelastic material sample to simulated road conditions to identify various performance properties associated with the material sample.

The disclosure provides a rock stratum grouting water blocking test device and method under a mining coupling condition, and relates to the technical field of permeability testing. The device includes a solution box, a test box, a pressing plate replacement box, a grouting pump, a recovery pool and a water pump, the solution box is connected with the test box through a liquid injection pipe, the bottom of the test box is connected with the pressing plate replacement box, the pressing plate replacement box is connected with a bottom plate, and the bottom plate is connected with a control panel. The device can be used for testing the influence of the single-factor or multi-factor coupling action of temperature, water quality, water pressure, water flow and grouting pressure on the grouting effect.

Proposed is a universal mechanical tester for measuring friction and wear characteristics of materials. The tester allows performing multiple test protocols with a single machine. The tester consists of a frame that supports a carriage moveable in a vertical direction, a force sensor assembly attached to the carriage, a positioning stage with a slide and a platform, and a plurality of modular sample stages interchangeably installable on the platform for executing linear and rotary motions of the lower sample relative to the upper sample in various directions and planes. The tester is provided with a set of electronic identification devices for identifying a modular sample stage installed on the platform and the force sensor assembly attached to the carriage.

An abrasion tester and testing method. The testing method comprises setting a running speed of a rubber sample fixed to an outer surface of an annular belt member stretched between a pair of pulleys to a desired speed; setting a pressing load applied by a contact member to a desired pressing load via an anchor member; selecting, as the contact member, a desired contact member from a plurality of types of contact members with different rubber sample surface contacting tip specifications; pressing the contact member against the surface of the rubber sample running by the rotation of the pulleys; and obtaining an amount of scratch abrasion of the rubber sample using a calculation unit on the basis of a cross-sectional shape of the surface of the rubber sample detected by a shape sensor.

The invention is a method of assessing at least one petroleum characteristic of a rock sample. Starting from a temperature ranging between 50 C. and 120 C., the temperature of a rock sample is raised to a temperature ranging between 180 C. and 220 C. which is maintained for a predetermined time duration. The temperature of the sample is increased to a temperature ranging between 330 C. and 370 C. which is maintained for a predetermined time duration. The temperature of the sample is then raised to a temperature ranging between 630 C. and 670 C. Three quantities representative of the amount of hydrocarbon compounds released during the temperature change stages are measured and at least one petroleum characteristic of the sample is deduced from these quantities.

A method of laser bond inspection is provided. The method includes applying a thermochromatic energy-absorbing material to an inspection site of a test article. The method includes delivering a first amount of energy to the inspection site using a laser. The first amount of energy generates stresses in the test article. The method includes absorbing the first amount of energy into the thermochromatic energy-absorbing material to produce an observable thermal response that correlates to the first amount of energy.

The disclosure provides a rock stratum grouting water blocking test device and method under a mining coupling condition, and relates to the technical field of permeability testing. The device includes a solution box, a test box, a pressing plate replacement box, a grouting pump, a recovery pool and a water pump, the solution box is connected with the test box through a liquid injection pipe, the bottom of the test box is connected with the pressing plate replacement box, the pressing plate replacement box is connected with a bottom plate, and the bottom plate is connected with a control panel. The device can be used for testing the influence of the single-factor or multi-factor coupling action of temperature, water quality, water pressure, water flow and grouting pressure on the grouting effect.

Proposed is a universal mechanical tester for measuring friction and wear characteristics of materials. The tester allows performing multiple test protocols with a single machine. The tester consists of a frame that supports a carriage moveable in a vertical direction, a force sensor assembly attached to the carriage, a positioning stage with a slide and a platform, and a plurality of modular sample stages interchangeably installable on the platform for executing linear and rotary motions of the lower sample relative to the upper sample in various directions and planes. The tester is provided with a set of identification units for identifying a modular sample stage installed on the platform and the force sensor assembly attached to the carriage.

A collapsible shelf assembly that may be adapted to be supportably engaged by a cooking structure. The collapsible shelf assembly may comprise a first support panel and a second support panel for supporting a shelf panel, and may be stabilized by stabilizer members. The collapsible shelf assembly may be moveable between a stowed position and a deployed position.