Abstract: A composite panel includes a first carbon fiber layer and a first glass fiber layer. A first carbon fiber sensor includes a first plurality of carbon fiber tows. The composite panel includes a second glass fiber layer and a second carbon fiber layer. The first carbon fiber sensor is arranged between the first glass fiber layer and the second glass fiber layer. The first carbon fiber layer and the second carbon fiber layer are arranged adjacent to the first glass fiber layer and the second glass fiber layer, respectively.

Abstract: A composite panel includes a first carbon fiber layer and a first glass fiber layer. A first carbon fiber sensor includes a first plurality of carbon fiber tows. The composite panel includes a second glass fiber layer and a second carbon fiber layer. The first carbon fiber sensor is arranged between the first glass fiber layer and the second glass fiber layer. The first carbon fiber layer and the second carbon fiber layer are arranged adjacent to the first glass fiber layer and the second glass fiber layer, respectively.

Abstract: Techniques for vision-based sensing of structural displacement of an object, are disclosed. An example system includes digital video cameras adapted to generate digital image information corresponding to features of the object, an input to receive the digital image information corresponding to the one or more features, a converter configured to convert the digital image information into templates, and a comparator to compare the templates in sequence and to subtract displacement of stationary reference features.

Abstract: Techniques for vision-based sensing of structural displacement of an object, are disclosed. An example system includes digital video cameras adapted to generate digital image information corresponding to features of the object, an input to receive the digital image information corresponding to the one or more features, a converter configured to convert the digital image information into templates, and a comparator to compare the templates in sequence and to subtract displacement of stationary reference features.

Abstract: Displacement is measured using two overlaid parallel optic gratings as the sensing elements of a sensor head. Optic fibers are employed as the transmission media between the sensor head and a central signal processing unit. The light intensity signals of Moire fringes generated by the overlaid optic gratings are transmitted through optic fibers to the central signal processing unit. By digitally counting the number of Moire fringes, the changes in both direction and magnitude of the displacement are measured. A number of sensor heads employing the overlaid optic gratings as sensing elements are multiplexed through a common optic fiber link to comprise a multipoint sensor system. By similarly modifying the sensor head, this sensor system also measures other physical quantities such as strain, acceleration, and pressure.