Detection of nonlinear behaviour of composite components before and after endurance trials

D. Di Maio*, A. delli Carri, Fabrizio Magi, I. A. Sever

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

Composite components are being studied by many researchers due to complex nature of their nonlinear dynamic behaviour. This behaviour can be a function of several factors, such as lay-up configuration and/or visco-elastic material properties etc. Recent studies on failure criteria of composite structures under endurance testing have shown that vibration forced responses can be nonlinear because of structural modification occurring during a test. Typically, endurance testing can cause initiation and propagation of a delamination(s) of the test structure, shifting dynamics of composites from quasi linear to non-linear regime. This transition was observed during laboratory experiments but very little effort was made to generate an understanding of the phenomenon. The aim of this paper is to focus on the study of nonlinear behaviour of composites before and after endurance trials. Recently, tools capable of addressing detection, characterisation, localisation and quantification aspects of nonlinearity have been developed. Some of these tools will be used in this exercise with an overall objective of quantifying the level of nonlinearity.

Original languageEnglish
Title of host publicationConference Proceedings of the Society for Experimental Mechanics Series
PublisherSpringer, New York, NY
Pages83-95
Number of pages13
Volume2
ISBN (Print)9783319045214
DOIs
Publication statusPublished - 2014
Event32nd IMAC Conference and Exposition on Structural Dynamics, 2014 - Orlando, FL, United States
Duration: 3 Feb 20146 Feb 2014

Conference

Conference32nd IMAC Conference and Exposition on Structural Dynamics, 2014
CountryUnited States
CityOrlando, FL
Period3/02/146/02/14

Keywords

  • Composites
  • Endurance
  • Modal testing
  • Nonlinearity

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