This disclosure relates to flexible display screen testing technology. A bending test device for a flexible display panel is provided. The bending test device includes a first bracket, a second bracket disposed in parallel to a side of the first bracket, and at least two first carriers laminated between the first bracket and the second bracket. Each of the first carriers is configured for bending and carrying a flexible display panel. The bending test for a plurality of flexible display panels can be simultaneously performed by laminating the first carrier.

Provided is a material testing machine capable of giving an appropriate testing force to a testing piece. The material testing machine performs a three-point bending test on a testing piece and includes a support mechanism that supports the testing piece, an indenter that is connected to an ultrasonic oscillator and gives ultrasonic vibration to the testing piece by abutting against the testing piece, and a load mechanism that presses the indenter to the testing piece supported by the support mechanism. The support mechanism includes: a spherical seat that has a lower member equipped with a spherical-surface-shaped concave portion or convex portion, and an upper member equipped with a spherical-surface-shaped concave portion or convex portion having a shape corresponding to the concave portion or convex portion in the lower member; a holding portion; and a first movable member.

A bending apparatus for a sample is disclosed. The bending apparatus includes a translation mechanism that translates a vertical displacement/force into a horizontal displacement/force for bending. Components of the bending apparatus are fabricated from a strong, radiolucent material. In these ways, the bending apparatus is compatible with micro-CT imaging, and as such, may be used to bend a sample during imaging. In a particular application, the bending apparatus may be used to measure biomechanical properties of a bone, such as bone strength, bone material properties, fracture toughness, and fracture propagation.

A test apparatus used for simulating debonding between a carbon fiber reinforced polymer (CFRP) and concrete in a CFRP-strengthened structure consists of a primary structural block, a secondary structural block, an adjustable hanger, a receiving slot, an attachment mechanism, a pull-off disk, a connecting plate having a plurality of rods. The adjustable hanger and the secondary structural block are slidably positioned into the receiving slot that traverses into a structural body of the primary structural block. The adjustable hanger is mainly used during double-shearing tests and mixed-mode tests, wherein both shearing and peeling is analyzed in mixed-mode tests. The secondary structural block is used in double-shear tests, mixed-mode tests, single-shear tests, tension pull-off tests, and beam-bend tests. The attachment mechanism, which holds the primary structural block, the secondary structural block, and the adjustable hanger together, is also used during single-shear tests and beam-bend tests.

A test apparatus used for simulating debonding between a carbon fiber reinforced polymer (CFRP) and concrete in a CFRP-strengthened structure consists of a primary structural block, a secondary structural block, an adjustable hanger, a receiving slot, an attachment mechanism, a pull-off disk, a connecting plate having a plurality of rods. The adjustable hanger and the secondary structural block are slidably positioned into the receiving slot that traverses into a structural body of the primary structural block. The adjustable hanger is mainly used during double-shearing tests and mixed-mode tests, wherein both shearing and peeling is analyzed in mixed-mode tests. The secondary structural block is used in double-shear tests, mixed-mode tests, single-shear tests, tension pull-off tests, and beam-bend tests. The attachment mechanism, which holds the primary structural block, the secondary structural block, and the adjustable hanger together, is also used during single-shear tests and beam-bend tests.

A method and device for performing a bending test on a display panel are disclosed. The method includes the steps of: providing a fixing member, a pressure exerting member and a driving device, and forming a space in the fixing member; fixing the display panel vertically onto the fixing member, wherein the display panel matches with the space to provide a corresponding space for deformation of the display panel; and driving the pressure exerting member to move in a direction perpendicular to the display panel to exert a pressure onto the display panel. If the pressure exerted onto the display panel is equal to a predetermined pressure for a predetermined time, the driving device controls the pressure exerting member to stop exerting the pressure onto the display panel. The predetermined pressure is a pressure required to drive the display panel to deform and reach a predetermined curvature.

An apparatus for testing the edge strength of a discrete sheet of material such as glass where the sheet has an irregular free-form shaped outline is disclosed. The apparatus can include a plurality of assemblies configured for selectively applying a 3-point bending load on an edge of the sheet of material in a test region of the apparatus, a detection mechanism that optically measures strain in the sheet of material in the region, and a processor that determines the stress in the sheet based on the measured strain by calculating the stress that would be required to produce the measured strain in the sheet of material.

A disconnection detecting system for detecting disconnection of any of a plurality of wires included in a cable is provided. The disconnection detecting system includes: a bending mechanism configured to periodically apply force to the cable so as to cause the cable to reciprocate between a first bending state to be bent in one direction of clockwise and counterclockwise directions and a second bending state to be bent in the other direction; and a measuring apparatus configured to measure a resistance value of the cable, which varies on a time series basis in accordance with the reciprocation of the bending mechanism, and extract a component of a bending frequency for reciprocating between the first and second bending states once from frequency components included in time-series variation in the resistance value of the cable. The disconnection is detected on a basis of amplitude of the component of the bending frequency.

A system for composite material delamination testing at elevated temperatures is disclosed. The system includes a testing machine, means for increasing temperature of a test article, a specimen made from composite material, and a specimen mount for coupling the specimen to the testing machine. The specimen mount is configured to endure temperatures greater than ambient applied to the specimen so as to enable elevated temperature testing.

Provided is a system for measuring rigidity characteristics that measures a CT value of a golf club head based on an acceleration occurring in an impactor when the impactor is caused to strike the golf club head. Correlation data is calculated by measuring a representative CT value of the golf club head, which is calculated based on CT values measured multiple times by changing the impact velocity of the impactor, and a test velocity CT value, which is a CT value when the impact velocity is set to a predetermined test velocity, for each of a plurality of the golf club heads of an identical model. A rigidity characteristic value measuring device measures the test velocity CT value for another golf club head of the model. A computer estimates the representative CT value of the other golf club head based on the test velocity CT value and the correlation data.