Standard Article

Value Assessment Approaches for Structural Life Management

Principles of SHM-based Structural Monitoring, Design and Maintenance

Management

  1. Enrique A. Medina1,
  2. John C. Aldrin2

Published Online: 15 SEP 2009

DOI: 10.1002/9780470061626.shm189

Encyclopedia of Structural Health Monitoring

Encyclopedia of Structural Health Monitoring

How to Cite

Medina, E. A. and Aldrin, J. C. 2009. Value Assessment Approaches for Structural Life Management. Encyclopedia of Structural Health Monitoring. .

Author Information

  1. 1

    Radiance Technologies Inc., Dayton, OH, USA

  2. 2

    Computational Tools, Gurnee, IL, USA

Publication History

  1. Published Online: 15 SEP 2009

Abstract

This article presents an overview of the basic principles of value assessment for structural health monitoring (SHM) technology as part of life-cycle management of aerospace structures. By evaluating and optimizing trade-offs among reliability, availability, and life-cycle costs, value assessment methods can help decide whether and how SHM technologies should be implemented as part of structural life management in conjunction with nondestructive evaluation (NDE) techniques. We review various methods of value assessment, including cost-benefit analysis and multicriteria optimization. We describe several deterministic and probabilistic modeling tools available in the market and present several application examples. These analyses use a method for estimating total life-cycle cost of various maintenance options including SHM and compare these options based on costs and system reliability benefits. We also present several examples that use a value assessment method based on multicriteria optimization and show how these tools enable optimization of trade-offs among various reliability and cost objectives of the hybrid NDE-SHM (nondestructive evaluation/structural health monitoring) life management design problem. Finally, we discuss the need for improved data to enable better life management strategies.

Keywords:

  • value assessment of structures;
  • structural health monitoring;
  • structures life-cycle management;
  • life-cycle management strategies;
  • SHM value assessment;
  • life-cycle optimization