Comparison of Various Impedance Measurement Techniques for Assessing Degradation in Wiring Harness Shield Effectiveness and a Field Survey of FADEC Shield Integrity of In-Service Aircraft
Comparison of Various Impedance Measurement Techniques for Assessing Degradation in Wiring Harness Shield Effectiveness and a Field Survey of FADEC Shield Integrity of In-Service Aircraft
- Neue Suche nach: J. B. O'Loughlin
- Neue Suche nach: S. R. Skinner
- Neue Suche nach: J. B. O'Loughlin
- Neue Suche nach: S. R. Skinner
This report compares the performance of various impedance measurement techniques for measuring degradation in wire harness shield effectiveness. For field measurements, comparisons were made between a Boeing loop resistance tester (LRT) and a Hewlett-Packard (HP) network analyzer. For laboratory measurements, comparisons were made between an HP network analyzer, a Boeing LRT operating at 200 Hz, an Airbus LRT operating at 1000 Hz, and a Keithley Model 580 Micro-Ohmmeter. In the field survey, the electrical characteristics of shielded wire bundles of an aircrafts critical system were analyzed for increase in shield loop resistance from time of manufacture through 5 years of service. Full Authority Digital Engine Control (FADEC) wire harnesses from general aviation business jet aircraft were chosen for this shield degradation field survey.
Dokumentinformationen
Comparison of Various Impedance Measurement Techniques for Assessing Degradation in Wiring Harness Shield Effectiveness and a Field Survey of FADEC Shield Integrity of In-Service Aircraft
2004
38 pages
Report
Keine Angabe
Englisch