
Proceedings Paper
Reliability analysis of fiber optic sensors for structural health monitoring applicationsFormat | Member Price | Non-Member Price |
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Paper Abstract
The paper parametrically explores the design sensitivity of a fiber optic pressure sensor (FOPS), based on the potential
failure mechanisms expected in the sensor diaphragm. The product under study is a miniature FOPS that can be
embedded in, or installed on, a structure for pressure monitoring applications. The field operating conditions are defined
in terms of temperature, pressure, and vibration loading. The FOPS probe has a Fabry-Perot cavity, with the fiber tip and
a miniature diaphragm acting as the two mirrors. The cavity length changes when the diaphragm deflects under
pressure. However, due to field operating conditions, several failure mechanisms may affect the structural and optical
characteristics of the sensor, such as cracks in the diaphragm and/or high residual stresses in the optical fiber. With the
aid of finite element analysis, this article investigates conflicting design constraints due to structural failure mechanisms
in the diaphragm and elaborates on the severity of each one by parametric design sensitivity studies.
Paper Details
Date Published: 30 March 2009
PDF: 10 pages
Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72923E (30 March 2009); doi: 10.1117/12.815831
Published in SPIE Proceedings Vol. 7292:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009
Masayoshi Tomizuka, Editor(s)
PDF: 10 pages
Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72923E (30 March 2009); doi: 10.1117/12.815831
Show Author Affiliations
Yasir Majeed, Univ. of Maryland, College Park (United States)
Moustafa Al-Bassyiouni, Univ. of Maryland, College Park (United States)
Moustafa Al-Bassyiouni, Univ. of Maryland, College Park (United States)
Abhijit Dasgupta, Univ. of Maryland, College Park (United States)
Published in SPIE Proceedings Vol. 7292:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009
Masayoshi Tomizuka, Editor(s)
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