AFRL scientists led the integrated product team (IPT) that developed program requirements for the disassembly, nondestructive evaluation, and metallographic analysis of the selected C-5A components. Multiple subcontractors are performing the various component evaluations, and the IPT-established requirements will ensure standardization of test and data reporting procedures throughout the program.

AFRL materials scientists are also conducting independent audits of several of the subcontractors identified as project participants. These audits will verify each organization’s ability to follow procedures and report results that WR-ALC, AMC, and the C-5 Systems Group can use. The scientists will employ a damage tolerance analysis software program to process collected data and enable accurate life-cycle predictions for the aircraft and its components.

The IPT also identified several high-priority components for AFRL in-house evaluation; these components include the inboard engine pylon attachment fitting (see Figure 2), the aft pressure bulkhead, and the contour box beam fitting. AFRL’s in-house evaluations will determine each component’s fatigue and stress corrosion cracking issues. In addition to investigating those components initially identified, AFRL scientists will evaluate any components subsequently found to require more thorough analysis.

Capt Lewis C. Lietch and Mr. Timothy Anderl (Anteon Corporation), of the Air Force Research Laboratory’s Materials and Manufacturing Directorate, wrote this article. For more information, contact TECH CONNECT at (800) 203-6451 or place a request at http://www.afrl.af.mil/techconn_index.asp. Reference document ML-H-05-02.