A hybrid method for damage detection and quantification in advanced X-COR composite structures

Rajesh Kumar Neerukatti, Abhishek Rajadas, Luke Borkowski, Aditi Chattopadhyay, Daniel W. Huff

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Advanced composite structures, such as foam core carbon fiber reinforced polymer composites, are increasingly being used in applications which require high strength, high in-plane and flexural stiffness, and low weight. However, the presence of in situ damage due to manufacturing defects and/or service conditions can complicate the failure mechanisms and compromise their strength and reliability. In this paper, the capability of detecting damages such as delaminations and foam-core separations in X-COR composite structures using non-destructive evaluation (NDE) and structural health monitoring (SHM) techniques is investigated. Two NDE techniques, flash thermography and low frequency ultrasonics, were used to detect and quantify the damage size and locations. Macro fiber composites (MFCs) were used as actuators and sensors to study the interaction of Lamb waves with delaminations and foam-core separations. The results indicate that both flash thermography and low frequency ultrasonics were capable of detecting damage in X-COR sandwich structures, although low frequency ultrasonic methods were capable of detecting through thickness damages more accurately than flash thermography. It was also observed that the presence of foam-core separations significantly changes the wave behavior when compared to delamination, which complicates the use of wave based SHM techniques. Further, a wave propagation model was developed to model the wave interaction with damages at different locations on the X-COR sandwich plate.

Original languageEnglish (US)
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016
PublisherSPIE
Volume9803
ISBN (Electronic)9781510600447
DOIs
StatePublished - 2016
Externally publishedYes
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016 - Las Vegas, United States
Duration: Mar 21 2016Mar 24 2016

Other

OtherSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016
CountryUnited States
CityLas Vegas
Period3/21/163/24/16

Keywords

  • Damage detection
  • Sandwich composite
  • Wave propagation
  • X-COR composites

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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  • Cite this

    Neerukatti, R. K., Rajadas, A., Borkowski, L., Chattopadhyay, A., & Huff, D. W. (2016). A hybrid method for damage detection and quantification in advanced X-COR composite structures. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016 (Vol. 9803). [980326] SPIE. https://doi.org/10.1117/12.2219266