A system and method for applying force to at least one device at least one force actuator including a processor accessing at least one description of the at least one device, the processor creating command information based at least on the at least one description, and a controller accessing the command information, the controller creating at least one motion command based on the command information, the controller issuing the at least one motion command, the motion command enabling the testing of the at least one device by controlling the at least one force actuator based on the at least one motion command.

A system and method for applying force to at least one device at least one force actuator including a processor accessing at least one description of the at least one device, the processor creating command information based at least on the at least one description, and a controller accessing the command information, the controller creating at least one motion command based on the command information, the controller issuing the at least one motion command, the motion command enabling the testing of the at least one device by controlling the at least one force actuator based on the at least one motion command.

A method of displaying stress distribution on a sample surface includes: step S4 of capturing images of the sample surface before loading, during the loading, and after unloading; step S5 of measuring a first strain amount for each pixel position based on correlation between the image before the loading and the image after the unloading; step S6 of measuring a second strain amount for each pixel position based on correlation between the image before the loading and the image during the loading; step S7 of calculating stress for each pixel position based on the difference between the first strain amount and the second strain amount; and step S8 of displaying the distribution of the calculated stress at each pixel position.

A method of displaying stress distribution on a sample surface includes: step S4 of capturing images of the sample surface before loading, during the loading, and after unloading; step S5 of measuring a first strain amount for each pixel position based on correlation between the image before the loading and the image after the unloading; step S6 of measuring a second strain amount for each pixel position based on correlation between the image before the loading and the image during the loading; step S7 of calculating stress for each pixel position based on the difference between the first strain amount and the second strain amount; and step S8 of displaying the distribution of the calculated stress at each pixel position.

A rolling apparatus for evaluating durability of a flexible material includes a base unit, a rolling unit rotatably coupled to the base unit and around which the flexible material is wound, and a sliding unit which grips an end of the flexible material wound around the rolling unit and is spaced apart from the rolling unit to be slidably coupled to the base unit. The sliding unit is set to at least one of a preset speed and torque in the direction in which the flexible material is pulled, and at least one of the speed and torque of the rolling unit for an unrolling operation of the rolling unit and a rolling operation of the rolling unit is controlled such that the flexible material can maintain a flat state.

A rolling apparatus for evaluating durability of a flexible material includes a base unit, a rolling unit rotatably coupled to the base unit and around which the flexible material is wound, and a sliding unit which grips an end of the flexible material wound around the rolling unit and is spaced apart from the rolling unit to be slidably coupled to the base unit. The sliding unit is set to at least one of a preset speed and torque in the direction in which the flexible material is pulled, and at least one of the speed and torque of the rolling unit for an unrolling operation of the rolling unit and a rolling operation of the rolling unit is controlled such that the flexible material can maintain a flat state.

A sliding apparatus for durability evaluation of a flexible material includes a base unit having a folding space formed therethrough, a sliding unit which is coupled to the base unit to be slidably movable and to which one side of a flexible material to be evaluated is fixed, and a folding unit which is arranged to be apart from the sliding unit, to which the other side of the flexible material is fixed, and which rotates with respect to the sliding unit to in-fold or out-fold the flexible material in an unfolded state. The sliding unit changes the position of the bent portion formed in the flexible material as the sliding unit slidably moves on the base unit with the flexible material in an in-folded state or out-folded state.

A sliding apparatus for durability evaluation of a flexible material includes a base unit having a folding space formed therethrough, a sliding unit which is coupled to the base unit to be slidably movable and to which one side of a flexible material to be evaluated is fixed, and a folding unit which is arranged to be apart from the sliding unit, to which the other side of the flexible material is fixed, and which rotates with respect to the sliding unit to in-fold or out-fold the flexible material in an unfolded state. The sliding unit changes the position of the bent portion formed in the flexible material as the sliding unit slidably moves on the base unit with the flexible material in an in-folded state or out-folded state.

An electronic apparatus includes a base substrate including a planar part and a folding part, which is connected to a side of the planar part and is foldable along a folding axis extending in a predetermined direction, where the base substrate includes a front surface including an active region and a peripheral region adjacent to the active region, when viewed from a plan view in a thickness thereof, a plurality of pixels disposed on the front surface and in the active region, an encapsulation layer covering the pixels, a strain-sensing pattern disposed on the front surface, in the active region, and on the folding part, and a plurality of pixel pads disposed on the peripheral region. The strain-sensing pattern is disposed between the base substrate and the encapsulation layer.

An electronic apparatus includes a base substrate including a planar part and a folding part, which is connected to a side of the planar part and is foldable along a folding axis extending in a predetermined direction, where the base substrate includes a front surface including an active region and a peripheral region adjacent to the active region, when viewed from a plan view in a thickness thereof, a plurality of pixels disposed on the front surface and in the active region, an encapsulation layer covering the pixels, a strain-sensing pattern disposed on the front surface, in the active region, and on the folding part, and a plurality of pixel pads disposed on the peripheral region. The strain-sensing pattern is disposed between the base substrate and the encapsulation layer.