期刊
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
卷 22, 期 12, 页码 1359-1370出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X11416029
关键词
structural health monitoring; piezoelectric; sensors; PWAS; SHM; space applications; satellites; space vehicles; international space station; orbital plane
资金
- NASA STTR through NextGen Aeronautics, Inc. [T7-02]
- National Science Foundation [CMS-0925466]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0925466] Funding Source: National Science Foundation
Piezoelectric wafer active sensors (PWAS) are lightweight and inexpensive enablers for a large class of structural health monitoring (SHM) applications. This paper presents and discusses the challenges and opportunities related to the use of PWAS in the structures specific to space applications. The challenges posed by space structures are often different from those encountered in conventional structures. After a review of PWAS principles, the paper discusses the multi-physics power and energy transduction between structurally guided waves and PWAS; predictive modeling results using a simplified analytical approach are presented. Experimental results on space-like specimen structures are presented. Survivability of PWAS transducers under cryogenic space-like conditions is experimentally verified. The paper ends with conclusions and suggestions for further work.
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