To address the Navys need for a novel nondestructive method for volumetric inspection of welds and corrosion under thick polymeric coatings in steel hull structures, Physical Optics Corporation (POC) proposes to develop a new Photonic Magnetometer-based Electric Current Perturbation (PHOME) nondestructive inspection system. The system design based on a novel optically interrogated magnetic sensor offers sensitivity of 1 pico-Tesla/square root Hz in a bandwidth of 0.1 to 1,000 Hz needed for complete volumetric inspection and detection of sub-millimeter defects and corrosion. Innovative 2D mapping based on tracking technology and magnetic image analyses enables location and sizing of the detected defects. The system offers single-sided inspection through 50 mm-thick polymer coatings, and detection, location, and sizing of corrosion (
Keywords: Photonic Magnetometer, Tracking Devices, Steel Hull Structures, Magnetic Image Analysis, Electric Current Perturbation, Polymer Coating, Nondestructiv