Abstract: A device for testing a stiffener of an aircraft structure made from composite materials. At least one ultrasound sensor is configured to provide measurements relative to a material health state of the stiffener. The device includes a protective enclosure for housing the ultrasound sensor and a mobile gantry configured to move along the stiffener. The protective enclosure with the ultrasound sensor is mounted inside the mobile gantry. A driver is configured to drive the mobile gantry along the stiffener. A clamper is rigidly connected to the protective enclosure and configured to hold the ultrasound sensor pressed against the surface of the stiffener to be controlled. A locator to synchronize each area of the surface of the stiffener with the measurement of the ultrasound sensor.

Abstract: A device for testing a stiffener of an aircraft structure made from composite materials. At least one ultrasound sensor is configured to provide measurements relative to a material health state of the stiffener. The device includes a protective enclosure for housing the ultrasound sensor and a mobile gantry configured to move along the stiffener. The protective enclosure with the ultrasound sensor is mounted inside the mobile gantry. A driver is configured to drive the mobile gantry along the stiffener. A clamper is rigidly connected to the protective enclosure and configured to hold the ultrasound sensor pressed against the surface of the stiffener to be controlled. A locator to synchronize each area of the surface of the stiffener with the measurement of the ultrasound sensor.

Abstract: A strain gauge includes a substrate (2) for mounting an element (3) to be reversibly lengthened by a force applied while displaying a variation in the resistance thereof, the element (3) lengthening itself along an axis for measurement by the gauge. The gauge includes at least one contrast target (5, 6) capable of reflecting an incident light beam, the at least one contrast target (5, 6) being placed on the gauge in a predetermined position that makes it possible to predetermine the center of the axis (4), for measurement by the strain gauge (1), by detecting the position of the at least one contrast target (5, 6).

Abstract: A strain gauge includes a substrate (2) for mounting an element (3) to be reversibly lengthened by a force applied while displaying a variation in the resistance thereof, the element (3) lengthening itself along an axis for measurement by the gauge. The gauge includes at least one contrast target (5, 6) capable of reflecting an incident light beam, the at least one contrast target (5, 6) being placed on the gauge in a predetermined position that makes it possible to predetermine the center of the axis (4), for measurement by the strain gauge (1), by detecting the position of the at least one contrast target (5, 6).