Methods, devices, and systems for testing the flexibility of a sample such as an electronic device are provided herein. A testing system can have a motor operably connected to a mandrel such that the motor causes the mandrel to accurately and precisely rotate and cause the sample to conform to an outer surface of the mandrel. Moreover, a proximal end of the sample is secured to the outer surface of the mandrel, and the opposing distal end is controlled by a retractable holder such that the entire sample is subjected to a constant bend radius as the mandrel rotates. Other aspects and features such as controlling the environment around the mandrel and securing small samples to the mandrel are also described herein.

An apparatus for testing a sheet of brittle material 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.

The invention relates to a device for carrying out bending tests on panel-shaped or beam-shaped samples (1), in which two rotary drives are arranged at a distance from one another and a flange (3) is fastened to each of the drive shafts of the rotary drives, said drive shafts being oriented parallel to one another. At least two bar-shaped bending elements (2) oriented parallel to the axis of rotation of the drive shafts and arranged at a distance from the axis of rotation and at a distance from one another are provided on each of the flanges (3). A panel-shaped or beam-shaped sample (1) can be introduced between the two bar-shaped bending elements (2) on the two flanges (3). In the event of rotation of the rotary drives in opposite directions of rotation, bending forces are exerted on the sample (1) and each of the two rotary drives can be controlled individually and connected to an electronic open-loop or closed-loop control unit.

A tribological testing simulator includes a base having a pair of catchers that clamp onto a specimen, a punch that is drawn through the specimen, and a plurality of sensors that take measurements of respective regions of the specimen. The sensors measure their respective regions of the specimen as it is drawn from an un-deformed state to a deformed state, and facilitate conducting a tensile strip friction test. In some embodiments, the catchers have flat inserts that facilitate conducting a strip stretch or draw test simultaneously with a tensile strip friction test. In other embodiments, the catchers include drawbead inserts that facilitate conducting a drawbead friction test simultaneously with a tensile strip friction test.

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.

The present invention relates to a test system and method capable of simultaneously carrying out a high-throughput test of mechanical properties for miniature specimens. The system comprises one workstation (17) and a plurality of specimen test modules (16) installed horizontally or vertically on a workbench (15), wherein the workstation (17) comprises an operation interface, a data processing unit and a load output unit; each specimen test module (16) comprises a drive unit (5), an interchangeable clamp unit (8), a displacement sensor (2), and a load sensor (14); the workstation (17) controls the drive unit (5) of the specimen test module (16) and receives detection data of the displacement sensor (2) and the load sensor (14); each specimen test module (16) optionally performs mechanical property testing independently; and the workstation (17) controls simultaneously started testing of a plurality of specimens (9). The present invention can achieve tensile, bending, compression bending, stress-rupture, relaxation, and fatigue strength tests on a plurality of specimens at the same time.

A method for testing an arresting unit (15) for locking a foldable wing tip portion (11) to a wing (5) that includes a fixed wing (9), a foldable wing tip portion (11), and a folded position, an actuation unit (13) for actuating movement of the foldable wing tip portion (11), and an arresting unit (15) for locking the foldable wing tip portion (11). The method includes: locking the foldable wing tip portion (11) in the extended position by the arresting unit (15), controlling the actuation unit (13) to move the foldable wing tip portion (11) in the direction towards the folded position, such that the foldable wing tip portion (11) urges against the arresting unit (15) with a predefined test load, detecting deformation of the arresting unit (15) during or after application of the test load, and comparing the detected deformation to a predefined threshold deformation.

A universal folding test device for a foldable display is proposed. The universal folding test device includes: a support plate having a flat-plate shape, being arranged horizontally with a Z axis as a normal line in a space formed by three coordinate axes of X, Y, and Z that are orthogonal to each other, and having opposite sides thereof formed parallel to the Y axis; and a rotary plate being arranged symmetrically on each of the opposite sides of the support plate, being formed as a flat plate having a side thereof adjacent to the support plate and parallel to the Y axis, having a Y-axis rotation actuator formed thereon where the side adjacent to the support plate becomes a rotary shaft, and having a X and Z-axis transfer actuator coupled thereto, wherein a foldable display substrate is attached to the support plate and the rotary plate.

A bending test apparatus includes a jig including first to third supporting members arranged in a first direction; a shaft member including a first shaft, a second shaft, and a third shaft extending in a second direction intersecting the first direction and respectively connected to the first to third supporting members; a driving member connected to the first shaft and providing a rotation force to the first shaft; a sliding member including a first slider and a second slider respectively connected to the second shaft and the third shaft; and a rail member extending in the first direction and guiding movements of the first slider and the second slider. When the first shaft rotates the first supporting member in a first rotation direction, the second and third supporting members rotate in a second rotation direction opposite to the first rotation direction.

A method and apparatus for rotating a test specimen and simultaneously applying a torque, bending moment, and an axial load without the applied forces interfering with each other.