Optical sensing of the fatigue damage state of CFRP under realistic aeronautical load sequences

Zuluaga Ramírez, Pablo and Arconada Sousa, Álvaro and Frövel, Malte and Belenguer, Tomás and Salazar Bloise, Félix José (2015). Optical sensing of the fatigue damage state of CFRP under realistic aeronautical load sequences. "Sensors", v. 15 (n. 3); pp. 5710-5721. ISSN 1424-8220. https://doi.org/10.3390/s150305710.

Description

Title: Optical sensing of the fatigue damage state of CFRP under realistic aeronautical load sequences
Author/s:
  • Zuluaga Ramírez, Pablo
  • Arconada Sousa, Álvaro
  • Frövel, Malte
  • Belenguer, Tomás
  • Salazar Bloise, Félix José
Item Type: Article
Título de Revista/Publicación: Sensors
Date: March 2015
ISSN: 1424-8220
Volume: 15
Subjects:
Faculty: E.T.S.I. Minas (UPM)
Department: Física Aplicada [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We present an optical sensing methodology to estimate the fatigue damage state of structures made of carbon fiber reinforced polymer (CFRP), by measuring variations on the surface roughness. Variable amplitude loads (VAL), which represent realistic loads during aeronautical missions of fighter aircraft (FALSTAFF) have been applied to coupons until failure. Stiffness degradation and surface roughness variations have been measured during the life of the coupons obtaining a Pearson correlation of 0.75 between both variables. The data were compared with a previous study for Constant Amplitude Load (CAL) obtaining similar results. Conclusions suggest that the surface roughness measured in strategic zones is a useful technique for structural health monitoring of CFRP structures, and that it is independent of the type of load applied. Surface roughness can be measured in the field by optical techniques such as speckle, confocal perfilometers and interferometry, among others.

More information

Item ID: 41476
DC Identifier: http://oa.upm.es/41476/
OAI Identifier: oai:oa.upm.es:41476
DOI: 10.3390/s150305710
Official URL: http://www.mdpi.com/1424-8220/15/3/5710
Deposited by: Memoria Investigacion
Deposited on: 24 Jun 2016 08:52
Last Modified: 24 Jun 2016 08:52
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