Traditionally, the primary analytical instrument that monitors the "health" of mechanical oil systems in the U.S. Department of Defense (DoD) and Canadian Department of National Defence (CDND) is rotrode atomic emission spectroscopy (AES). The engine oil filter installed in the F-18 engine captures particles from the engine oil stream as small as 0.3 microns. This phenomenon renders AES surveillance of the F-18 engine oil system ineffective in detecting abnormal wear ...