Assessing the Scaling Subtraction Method for Impact Damage Detection in Composite Plates

The scaling subtraction method (SSM) is a non-destructive measurement approach used to extract nonlinear features from the elastic response of a structure. As such it can be used for damage detection purposes by identifying nonlinearities that may result from the presence of micro cracks or inclusio...

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Bibliographic Details
Published inJournal of nondestructive evaluation Vol. 36; no. 2; pp. 1 - 16
Main Authors Porcu, Maria Cristina, Pieczonka, Lukasz, Frau, Andrea, Staszewski, Wieslaw Jerzy, Aymerich, Francesco
Format Journal Article
LanguageEnglish
Published New York Springer US 01.06.2017
Springer Nature B.V
Subjects
Amplitudes
Characterization and Evaluation of Materials
Classical Mechanics
Composite materials
Composite structures
Control
Damage assessment
Damage detection
Dynamical Systems
Engineering
Excitation
Flaw detection
Impact damage
Inclusions
Laminar composites
Nondestructive testing
Nonlinear response
Nonlinearity
Reference signals
Resonant frequencies
Solid Mechanics
Subtraction
Vibration
Vibration measurement
Non-linear behaviour
Composite plates
Impact damage detection
Scaling subtraction method
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Summary:The scaling subtraction method (SSM) is a non-destructive measurement approach used to extract nonlinear features from the elastic response of a structure. As such it can be used for damage detection purposes by identifying nonlinearities that may result from the presence of micro cracks or inclusions in granular and metallic materials. The effectiveness of such a technique to detect the presence of damage modes typical of laminated composite materials has not been yet assessed. With the purpose of filling this gap, in this paper the SSM is applied to inspect two laminated composite plates with different sizes, impact positions and sensor arrangement. Intact and damaged specimens are tested under harmonic excitations of different amplitude and frequency (the latter selected among the ultrasonic natural frequencies of the two plates). For each excitation case the recorded vibration signals are subtracted from the linearly rescaled reference signals and the SSM nonlinear indicators are calculated. The sensitivity of the method to the presence of damage is assessed in different sensor-receiver scenarios as well as for different excitation frequency and amplitude levels. Finite element numerical investigations are also performed to make comparisons with the experimental results.
ISSN:0195-9298
1573-4862
DOI:10.1007/s10921-017-0413-9