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Proceedings Paper

Wireless/integrated strain monitoring and simulation system
Author(s): Frank Abdi; R. Dutton; Tatsuya Takahashi; Cody Godines; Galib Abumeri
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Paper Abstract

This paper addresses the development and real time test validation of an integrated hardware and software environment that will be able to measure real-time in-situ strain and deformation fields using a state-of-the-art wireless sensor system to enhance structural durability and damage tolerance (D&DT), reliability via real-time structural health monitoring (SHM) for sensorized aerospace structures. The tool will be a vital extension of existing suite of structural health monitoring (SHM) and diagnostic prognostic system (DPS). The goal of the extended SHM-DPS is to apply a multi-scale nonlinear physics-based finite element analyses (FEA) to the "as-is" structural configuration to determine multi-site damage evolution, residual strength, remaining service life, and future inspection intervals and procedures. Information from a distributed system of wireless sensors will be used to determine the "as-is" state of the structure versus the "as-designed" target. The approach enables active monitoring of aerospace structural component performance and realization of DPS-based conditioned based maintenance. Software enhancements will incorporate information from a sensor network system that is distributed over an aerospace structural component. As case study DPS application a realistic composite stiffened panel representative of fuselage/wing components is selected. Two stiffened panels is manufactured and instrumented; a) embedded internally between composite layers, and b) surface mounted with wireless sensors; the second of which with an optimized sensor network. The panels will be tested in compression following low-velocity impact. The sensor system output will be routed and integrated with a finite element analysis (FEA) tool to determine the panel's, multi-site damage locations, and associated failure mechanisms, residual strength, remaining service life, and future inspection interval. The FEA model utilizes the web/internet based GENOA progressive failure analysis commercial software suite, durability and damage tolerance (D&DT), and reliability software capable of evaluating both metallic and advanced composite structural panels under service loading conditions. The approach utilizes a building block validation strategy, and real-time structural health monitoring system.

Paper Details

Date Published: 26 May 2011
PDF: 14 pages
Proc. SPIE 8026, Photonic Applications for Aerospace, Transportation, and Harsh Environment II, 80260G (26 May 2011); doi: 10.1117/12.885331
Show Author Affiliations
Frank Abdi, AlphaSTAR Corp. (United States)
R. Dutton, AlphaSTAR Corp. (United States)
Tatsuya Takahashi, AlphaSTAR Corp. (United States)
Cody Godines, AlphaSTAR Corp. (United States)
Galib Abumeri, AlphaSTAR Corp. (United States)

Published in SPIE Proceedings Vol. 8026:
Photonic Applications for Aerospace, Transportation, and Harsh Environment II
Alex A. Kazemi; Bernard Kress; Eric Y. Chan; Nabeel A. Riza; Lothar U. Kempen, Editor(s)

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