Special Coverage

Soft Robot “Walks” on Any Terrain
Defense Advanced Research Projects Agency
Using Microwaves to Produce High-Quality Graphene
Transducer-Actuator Systems for On-Machine Measurements and Automatic Part Alignment
Wide-Area Surveillance Using HD LWIR Uncooled Sensors
Heavy Lift Wing in Ground (WIG) Cargo Flying Boat
Technique Provides Security for Multi-Robot Systems
Bringing New Vision to Laser Material Processing Systems
NASA Tests Lasers’ Ability to Transmit Data from Space
Converting from Hydraulic Cylinders to Electric Actuators
Automating Optimization and Design Tasks Across Disciplines
A network of tiny sensors can be sprayed onto a structure to provide health condition information.

Sprayed sensors were developed that can be networked to render real-time information on the health status of a structure, detecting hidden flaws. The sprayed nanocomposite sensors and an ultrasound actuator are used to actively detect the health condition of the structure to which they are fixed.

The sensors can also be sprayed on the surface of a moving structure to transmit the structural health information in a real-time manner. Each sensor is connected to a network via a wire printed on the structure. By analyzing and comparing the electrical signals converted from the electric resistivity, the network can spot the defect in a structure, as well as translate the signals into 3D images.

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