JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Fielding a Structural Health Monitoring System on Legacy Military Aircraft: a Business Perspective
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Fielding a Structural Health Monitoring System on Legacy Military Aircraft: a Business Perspective
Bos, Marcel J.;
  PDF(new window)
 Abstract
An important trend in the sustainment of military aircraft is the transition from preventative maintenance to condition based maintenance (CBM). For CBM, it is essential that the actual system condition can be measured and the measured condition can be reliably extrapolated to a convenient moment in the future in order to facilitate the planning process while maintaining flight safety. Much research effort is currently being made for the development of technologies that enable CBM, including structural health monitoring (SHM) systems. Great progress has already been made in sensors, sensor networks, data acquisition, models and algorithms, data fusion/mining techniques, etc. However, the transition of these technologies into service is very slow. This is because business cases are difficult to define and the certification of the SHM systems is very challenging. This paper describes a possibility for fielding a SHM system on legacy military aircraft with a minimum amount of certification issues and with a good prospect of a positive return on investment. For appropriate areas in the airframe the application of SHM will reconcile the fail-safety and slow crack growth damage tolerance approaches that can be used for safeguarding the continuing airworthiness of these areas, combining the benefits of both approaches and eliminating the drawbacks.
 Keywords
Structural Health Monitoring;Condition Based Maintenance;Certification;Business Case;
 Language
English
 Cited by
 References
1.
K. Pipe, "Barriers to implementation of CBM," NATO-STO AVT-172 Technical Evaluation Report (2014)

2.
C. F. Tiffany, J. P. Gallagher and C. A. Babish, "Threats to aircraft structural safety, including a compendium of selected structural accidents/incidents," USAF Report ASC-TR-2010-5002 of the Engineering Directorate, Aeronautical Systems Center (2010)

3.
U. S. Department of Defense, "Airplane Damage Tolerance Requirements," Military Specification MIL-A-83444 (1974)

4.
J. B. De Jonge, "The requirement of damage tolerance; an analysis of damage tolerance requirements with specific reference to MIL-A-83444," NLR Report TR 77005U, (1976)

5.
U. S. Department of Defense, "Aircraft Structures. Joint Service Specification Guide," JSSG 2006, (1998)

6.
U. S. Department of Defense, "Revised damage tolerance requirements for slow crack growth design concepts for metallic structures," USAF Structures Bulletin EN-SB-08-002 (2008)

7.
U.S. Department of Defense, "In-service inspection flaw assumptions for metallic structures," USAF Structures Bulletin EN-SB-08-012, Revision C (2013)

8.
F. P. Grooteman, "A stochastic approach to determine lifetimes and inspection schemes for aircraft components," International Journal of Fatigue, Vol. 30, No. 1, pp. 138-149 (2008) crossref(new window)

9.
U. S. Department of Defense, "Revised damage tolerance requirements for fail-safe metallic structures," USAF Structures Bulletin EN-SB-08-001, Revision A, (2011)

10.
K. Jones, B. Harris and J. Killian, "Challenges and lessons learned from conformal eddy current probe acquisition and implementatio," Presentation Given at the ASIP Conference in San Antonio, TX, USA (2012)

11.
S. McMillan, "Alleviating maintenance burden; converting F-16 fleet management from slow crack growth to fail-safety," Presentation Given at the ASIP Conference in San Antonio, TX, USA (2012)

12.
M. J. Bos, J. S. Hwang, F. P. Grooteman, J.A.J.A. Dominicus and C. Y. Park, "Load monitoring and structural health monitoring within the Royal Netherlands Air Force," NLR Technical Publication NLR-TP-2013-479 (2013)

13.
D. Roach, "Real time crack detection using mountable comparative vacuum monitoring sensors," Smart Structures and Systems, Vol. 5, No. 4, pp. 317-328 (2009) crossref(new window)

14.
N. Goldfine, T. Dunford, A. Washabaugh, S. Haque and S. Denenberg, " MWM(R)-array electromagnetic techniques for crack sizing, weld assessment, thickness measurement, and mechanical damage profilometry," JENTEK Sensors, Inc. Techn. Document TR_2012_05_02 (2012)

15.
M. E. Ibrahim and R. J. Ditchburn, "Monitoring of fatigue cracks using permanently-mounted conformable eddy current sensors," Materials Forum, Vol. 33 (2009)