Guidelines to Minimize Manufacturing Induced Anomalies in Critical Rotating Parts [2006]
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Guidelines to Minimize Manufacturing Induced Anomalies in Critical Rotating Parts [2006]

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      This report was developed by a partnership of the Aerospace Industries Association (AIA) Rotor Manufacturing Project Team (RoMan) and the Federal Aviation Administration in response to accidents and incidents caused by manufacturing induced anomalies in critical rotating parts. According to a 1997 summary from the AIA Rotor Integrity Sub-Committee, about 25% of recent rotor cracks/events have been caused by post-forging manufacturing induced anomalies. The guidelines contained herein represent an industry consensus on the currently available best practices to minimize manufacturing induced anomalies in critical rotating parts consistent with the AIA RoMan team charter and vision. Recommendations for nominal rotor manufacturing process development and control, including process validation, quality assurance, disposition of suspect parts, process monitoring, human factors and training, and non-destructive evaluation, are included to provide an overall framework for a highly reliable manufacturing process. Because critical rotating part reliability has demonstrated particular sensitivity to hole machining practices, specific recommendations for hole making are included. In addition, a section containing industry lessons learned is included to provide guidance on issues common in the industry. The term lessons learned generally refers to useful pieces of practical wisdom acquired by experience or study. Appendices are attached which include the team charter and vision and detailed information concerning process monitoring of holes and non-destructive evaluation.
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