To address the NASA need for advanced nondestructive evaluation (NDE) sensor technologies for structural components of space flight hardware, Intellisense Systems Inc. (ISS) proposes to develop a new Terahertz Imaging Nondestructive Tomography (TINT) system, based on the novel integration of new compact terahertz (THz) source and THz/optical imaging sensors, and comprehensive capture and analysis software. TINT utilizes THz and optical imaging sensor fusion to enable quick identification of surface locations of potential defects or damages, followed by see-through THz 3D tomography of nonconducting parts for further evaluation. The TINT system integrates with a high-power THz illuminator, imaging sensors, and onboard position tracking to accurately register scanner/part relative positions and overlay sensor data to target locations. This advanced information processing and display aid the flight crew to precisely pinpoint defects and make critical assessments quickly. In Phase I, ISS plans to design the TINT system architecture, define subsystem requirements, acquire components, assemble a prototype, and develop software for sensor fusion and registration. The proof-of-concept prototype will be demonstrated in a laboratory environment, and a preliminary Phase II prototype, with its concept of operation to structures, will be described. In Phase II, ISS will refine the TINT design, enhance the subsystems, and develop an improved TRL-6 prototype for testing. Full reports of development and test results will be developed, together with a plan for applying the prototype to applicable structures or material systems. A commercialization plan will be made identifying and summarizing market opportunities.
