Operational Evaluation of a Health and Usage Monitoring System (HUMS)
Operational Evaluation of a Health and Usage Monitoring System (HUMS)

Author:

Publisher:

Published: 1998

Total Pages: 62

ISBN-13:

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This report describes the results of a research program to evaluate structural usage monitoring and damage tolerance methodology using data collected concurrently during a helicopter flight program. The helicopter (a Bell Model 412 equipped with a Health and Usage Monitoring System (HUMS) and data recorder) was operated by Petroleum Helicopters Inc. (PHI) during the 1996 Summer Olympic Games in Atlanta, Georgia, under the FAA's Project HeliSTAR. The mission was referred to as the Atlanta Short Haul Mission (ASHM) and involved many short flights to provide pick up and delivery service at the Olympics. The usage data collected for the ASHM was used to perform fatigue life calculations and damage tolerance evaluations on selected rotor system components know as Principal Structural Elements (PSE's). The usage data from the ASHM were compared to certification data and to data from a previous study for a mission called the Gulf Coast Mission (GCM) which involved primarily long cruise flights. Although the usage was more severe for the ASHM than the CGM, the results of the comparison showed that usage monitoring would provide benefits in extending retirement times or inspection intervals, compared to certification, especially if high/low altitude effects were considered. In addition to usage monitoring evaluations, guidelines for HUMS certification are discussed along with potential economic benefits and simplified "mini-HUMS" approaches to provide low cost systems with high paybacks.

Prognostics and Health Management of Electronics
Prognostics and Health Management of Electronics

Author: Michael G. Pecht

Publisher: John Wiley & Sons

Published: 2008-09-11

Total Pages: 335

ISBN-13: 0470385839

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The first book on Prognostics and Health Management of Electronics Recently, the field of prognostics for electronic products has received increased attention due to the potential to provide early warning of system failures, forecast maintenance as needed, and reduce life cycle costs. In response to the subject's growing interest among industry, government, and academic professionals, this book provides a road map to the current challenges and opportunities for research and development in Prognostics and Health Management (PHM). The book begins with a review of PHM and the techniques being developed to enable a prognostics approach for electronic products and systems. building on this foundation, the book then presents the state of the art in sensor systems for in-situ health and usage monitoring. Next, it discusses the various models and algorithms that can be utilized in PHM. Finally, it concludes with a discussion of the opportunities in future research. Readers can use the information in this book to: Detect and isolate faults Reduce the occurrence of No Fault Found (NFF) Provide advanced warning of system failures Enable condition-based (predictive) maintenance Obtain knowledge of load history for future design, qualification, and root cause analysis Increase system availability through an extension of maintenance cycles and/or timely repair actions Subtract life cycle costs of equipment from reduction in inspection costs, down time, and inventory Prognostics and Health Management of Electronics is an indispensable reference for electrical engineers in manufacturing, systems maintenance, and management, as well as design engineers in all areas of electronics.

System Health Management
System Health Management

Author: Stephen B. Johnson

Publisher: John Wiley & Sons

Published: 2011-06-01

Total Pages: 659

ISBN-13: 1119998735

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System Health Management: with Aerospace Applications provides the first complete reference text for System Health Management (SHM), the set of technologies and processes used to improve system dependability. Edited by a team of engineers and consultants with SHM design, development, and research experience from NASA, industry, and academia, each heading up sections in their own areas of expertise and co-coordinating contributions from leading experts, the book collates together in one text the state-of-the-art in SHM research, technology, and applications. It has been written primarily as a reference text for practitioners, for those in related disciplines, and for graduate students in aerospace or systems engineering. There are many technologies involved in SHM and no single person can be an expert in all aspects of the discipline.System Health Management: with Aerospace Applications provides an introduction to the major technologies, issues, and references in these disparate but related SHM areas. Since SHM has evolved most rapidly in aerospace, the various applications described in this book are taken primarily from the aerospace industry. However, the theories, techniques, and technologies discussed are applicable to many engineering disciplines and application areas. Readers will find sections on the basic theories and concepts of SHM, how it is applied in the system life cycle (architecture, design, verification and validation, etc.), the most important methods used (reliability, quality assurance, diagnostics, prognostics, etc.), and how SHM is applied in operations (commercial aircraft, launch operations, logistics, etc.), to subsystems (electrical power, structures, flight controls, etc.) and to system applications (robotic spacecraft, tactical missiles, rotorcraft, etc.).