Damage localization on composite structures: Radial basis function application

Stefano Cuomo, Gian Piero M. Fierro, Michele Meo

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

Abstract

The main purpose of Structural Health Monitoring (SHM) is to determine the integrity of a structure or component during their operational life. This is done, in order to schedule proper and effective actions to remove or mitigate any damage/defect that could affect the integrity of the system. Composite materials, widely used in aerospace applications, are characterized by low out-of-plane mechanical properties. An impulsive event such as low velocity impact (LVI) on this class of materials could cause barely visible impact damage (BVID) that is not detectable by a simple visual inspection, reducing the strength of the structure. This research work proposes an improved damage detection technique overcoming the limitations of the methods presented in literature (knowledge of the mechanical properties, the direction dependency of the wave speed, the attenuation and dispersion effects). The damage detection and localization technique is based on an active approach, using an array of sparse piezo sensors. One transducer is used as an acoustic actuator, inducing ultrasonic waves which propagate through the component, and the others are used as receiving sensors. The routine is based on the signal power of the response in the sensor's location and their interpolation by the radial basis function, from which the location of the damage is determined. The experimental campaign was performed on a simple carbon fiber reinforced plate fitted with eight piezo transducers, with multiple configurations of sending-receiving pairs. Good results were obtained with a good level of accuracy in damage localization estimation.

Original languageEnglish
Title of host publicationNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIV
EditorsTzu-Yang Yu, H. Felix Wu, Peter J. Shull, Andrew L. Gyekenyesi
PublisherSPIE
ISBN (Electronic)9781510635371
DOIs
Publication statusPublished - 23 Apr 2020
EventNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIV 2020 - None, USA United States
Duration: 27 Apr 20208 May 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11380
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIV 2020
CountryUSA United States
CityNone
Period27/04/208/05/20

Keywords

  • BVID
  • Damage detection
  • Low velocity impact (LVI)
  • Piezo sensors
  • Radial basis function
  • SHM
  • Ultrasounds

ASJC Scopus subject areas

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

Cite this

Cuomo, S., Fierro, G. P. M., & Meo, M. (2020). Damage localization on composite structures: Radial basis function application. In T-Y. Yu, H. F. Wu, P. J. Shull, & A. L. Gyekenyesi (Eds.), Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIV [113800C] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11380). SPIE. https://doi.org/10.1117/12.2559213