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Optimal Placement of MEMS Sensors for Damage Detection in Composite Plates

[ Vol. 10 , Issue. 1 ]

Author(s):

Stefano Mariani*, Matteo Bruggi, Francesco Caimmi and Giovanni Capellari   Pages 65 - 74 ( 10 )

Abstract:


Objective: Inertial Micro Electro-Mechanical Systems (MEMS) have recently been proposed as sensing components of surface-mounted structural health monitoring systems aimed to detect damage in flexible plates, subjected to either quasi-static or dynamic loadings.

Method: In this paper, we discuss a topology optimization approach to smartly deploy an array of MEMS accelerometers over thin flexible plates, partially allowing for scattering in their placement.

Result: We assume damage (i.e. a reduction of the local bending stiffness of the plate) to be located anywhere, and we show how boundary conditions, symmetry conditions and the stacking sequence in case of a composite laminate can affect the optimal sensor placement.

Keywords:

Structural health monitoring, Micro-Electro-Mechanical Systems (MEMS), thin plates, composites, damage detection.

Affiliation:

Politecnico di Milano, Dipartimento di Ingegneria Civile e Ambientale, Piazza L. da Vinci 32, 20133 Milano, Politecnico di Milano, Dipartimento di Ingegneria Civile e Ambientale, Piazza L. da Vinci 32, 20133 Milano, Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica , Politecnico di Milano, Dipartimento di Ingegneria Civile e Ambientale, Piazza L. da Vinci 32, 20133 Milano

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