Downloaded from https://www.everyspec.com ADS-79D-HDBK *Size not provided in literature **Enough particles to bridge gap 255 TABLE M-II:
Wear debris detection methods Instrument Size Range Sample Media Advantages Disadvantages Military Users AES-Rotrode 0.1 to 10 Oil sample Provides elements, fast, easy, deployable Off-aircraft (lab) All AES RFS 0.1 to 25* Oil sample Provides elements, analyzes slightly larger particles than Rotrode Off-aircraft (lab), variable data A few labs in test AES-ICP 0.1 to 3 Oil sample Provides elements, fastest, automated Off-aircraft (lab), requires gas (Argon) (Commercial labs) XRF-SEM 80 to 1000+ Chips – from any source Provides counts, size and alloy Off-aircraft (at-line), expensive, most difficult to operate USAF, some Allied XRF-chips 80 to 1000+ Chips – from any source Easy, provides counts, size and alloy Off-aircraft (at-line) In test USAF XRF-filter All Filter Provides particle count, size, elements & interprets alloy composition Off-aircraft (at-line) US Navy, Allied Forces Magnetic coil sensors 120 to 1000+ N/A On-aircraft, provides counts, size, mass, ferrous and non- ferrous Retrofit or design on- aircraft USAF & Navy (& commercial) Magnetic chip detectors Ferrous** N/A On-aircraft Retrofit or design on- aircraft, only sees partial oil flow, ferrous only All