A device to intercept a falling ball and prevent a second impact in a hardness or other test of a product and a falling ball impact tester including the device are disclosed. The device includes a sensor for detecting a position of the falling ball, an interception plate defining a catching groove, and a driving member connected to the interception plate and the sensor and providing motion. The driving member can move the interception plate to a position where the catching groove is in a falling path of the falling ball or is just outside such path, according to detection by the sensor.

A device to intercept a falling ball and prevent a second impact in a hardness or other test of a product and a falling ball impact tester including the device are disclosed. The device includes a sensor for detecting a position of the falling ball, an interception plate defining a catching groove, and a driving member connected to the interception plate and the sensor and providing motion. The driving member can move the interception plate to a position where the catching groove is in a falling path of the falling ball or is just outside such path, according to detection by the sensor.

A bend test device and bend test method enable a mandrel bend test to be automatically performed. The bend test device includes a controlled motor, a drive shaft coupled to the motor, a nose piece coupled to the drive shaft, and a nose clamp for securing a device under test (DUT) to the nose piece. A control system connected to the bend test device uses a programmed control algorithm to control the bend test device. The motor is connected to the drive shaft and rotates the drive shaft in response to control signaling provided by the control system. The rotating drive shaft in turn rotates the nose piece. Rotation of the nose piece bends the mounted DUT. The motor rotates the drive shaft as defined by the software parameters and the DUT is bent back and forth across a defined radius edge.

A bend test device and bend test method enable a mandrel bend test to be automatically performed. The bend test device includes a controlled motor, a drive shaft coupled to the motor, a nose piece coupled to the drive shaft, and a nose clamp for securing a device under test (DUT) to the nose piece. A control system connected to the bend test device uses a programmed control algorithm to control the bend test device. The motor is connected to the drive shaft and rotates the drive shaft in response to control signaling provided by the control system. The rotating drive shaft in turn rotates the nose piece. Rotation of the nose piece bends the mounted DUT. The motor rotates the drive shaft as defined by the software parameters and the DUT is bent back and forth across a defined radius edge.

Disclosed is a detachable device for repeatedly measuring textural characteristics of food. To this end, the present invention includes: a fixing unit having a probe guide member having, at a center thereof, a predetermined guide hole, having therein a predetermined space, and extending downward; a cylindrical probe configured to move upward and downward while surrounding the probe guide member and having multiple holes formed in a lower surface thereof so that a part of food is extracted in accordance with a degree of compression at the time of compressing the food; a food sample cup positioned below the cylindrical probe and having therein a space in which the food is placed; and multiple position fixing guides positioned between the fixing unit and the food sample cup.

Disclosed is a detachable device for repeatedly measuring textural characteristics of food. To this end, the present invention includes: a fixing unit having a probe guide member having, at a center thereof, a predetermined guide hole, having therein a predetermined space, and extending downward; a cylindrical probe configured to move upward and downward while surrounding the probe guide member and having multiple holes formed in a lower surface thereof so that a part of food is extracted in accordance with a degree of compression at the time of compressing the food; a food sample cup positioned below the cylindrical probe and having therein a space in which the food is placed; and multiple position fixing guides positioned between the fixing unit and the food sample cup.

Fully automatic true triaxial tunnel and underground project model test system, including a triaxial loading device for loading model test piece, automatic data collection and analysis device, power system and control system; triaxial loading device includes test bench, vertical loading system, horizontal front and back, and left and right loading systems, and the vertical, horizontal front and back, and left and right loading systems apply three-way pressure to model test body; test bench functions for supporting, fixing, and providing counter-force; automatic data collection and analysis device includes micro optical fiber sensor embedded in model test piece, optical fiber monitoring system, micro pressure box and strain brick, and can collect multi-field information.

Fully automatic true triaxial tunnel and underground project model test system, including a triaxial loading device for loading model test piece, automatic data collection and analysis device, power system and control system; triaxial loading device includes test bench, vertical loading system, horizontal front and back, and left and right loading systems, and the vertical, horizontal front and back, and left and right loading systems apply three-way pressure to model test body; test bench functions for supporting, fixing, and providing counter-force; automatic data collection and analysis device includes micro optical fiber sensor embedded in model test piece, optical fiber monitoring system, micro pressure box and strain brick, and can collect multi-field information.

A concrete temperature stress testing machine system including: a concrete temperature stress testing machine and a walk-in environment simulation laboratory system; and the walk-in environment simulation laboratory system includes a walk-in environment simulation laboratory, a host control cabinet, a compressor set room, an environment room control cabinet and a computer. The concrete temperature stress testing machine achieves the temperature deformation self-compensation by using the combination of different proportions of invar and No. 45 steel, an embedded type directly measuring deformation technology of the concrete temperature stress testing is achieved by the fit between the upper and side embedded parts, the embedded rod and the extending rod. The concrete temperature stress testing machine system according to embodiments of the present disclosure may compensate the impact of the temperature deformation by itself and directly measure the true deformation of concrete, thereby having high accuracy, good long-term stability, easy operation and other advantages.

A concrete temperature stress testing machine system including: a concrete temperature stress testing machine and a walk-in environment simulation laboratory system; and the walk-in environment simulation laboratory system includes a walk-in environment simulation laboratory, a host control cabinet, a compressor set room, an environment room control cabinet and a computer. The concrete temperature stress testing machine achieves the temperature deformation self-compensation by using the combination of different proportions of invar and No. 45 steel, an embedded type directly measuring deformation technology of the concrete temperature stress testing is achieved by the fit between the upper and side embedded parts, the embedded rod and the extending rod. The concrete temperature stress testing machine system according to embodiments of the present disclosure may compensate the impact of the temperature deformation by itself and directly measure the true deformation of concrete, thereby having high accuracy, good long-term stability, easy operation and other advantages.