Prize: Prize (including medals and awards)
A handheld magnetic scanner, using an array of highly sensitive Quantum Well Hall Effect (QWHE) sensors, has been designed and fabricated. The new transducer comprises a programmable electromagnet coil for AC and DC magnetic field illumination and QWHE sensor arrays oriented orthogonally to capture 2D magnetic field variation in defective materials in a single pass, which is not possible in competing Non-Destructive (NDT) systems. Usually, separate NDT techniques like Alternating Current Field Measurement (ACFM) and Magnetic Flux Leakage (MFL) are now combined in a single unit that makes it possible to perform testing on both magnetic and non-magnetic materials. Although there will always be limitations to designs, there still is room to improve the accuracy and versatile use of electromagnetic based defect testing systems, the use of QWHE sensors being a case in point