A robust procedure for damage identification in a lattice spacecraft structural element by mean of Strain field pattern recognition techniques. Sierra, J., Frövel, M., Del Olmo, E., Pintado, J., & Güemes, A. 2014. cited By 0![A robust procedure for damage identification in a lattice spacecraft structural element by mean of Strain field pattern recognition techniques [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex A high stiffness and low weight lattice structure for launcher applications made with high modulus carbon fiber was manufactured by EADS CASA Space by using a new cost efficient fiber placement technology. The structure consisted of a composite lattice of intertwined, unidirectional carbon fiber bars. Several Fiber Bragg Gratings (FBGs) were bonded along these bars in order to measure strain during different tests performed on the structure. A robust procedure for defect detection based on Principal Component Analysis (PCA) and strain field pattern recognition techniques was used in order to identify different defects induced in the structure during static testing conducted until fracture. A test campaign of smaller, iso-grid structures was conducted with the aim of studying the sensitivity to detect small defects in the lattice structure. A PCA model was built for the healthy structure. Subsequently, different known damage conditions were projected into the PCA model (baseline). From this projection, various damage indices and detection thresholds were calculated. The results showed that even small damages located far away from the sensors could be detected by this technique.
@Conference{Sierra2014,
author={Sierra, J.a and Frövel, M.b and Del Olmo, E.c and Pintado, J.M.b and Güemes, A.d },
title={A robust procedure for damage identification in a lattice spacecraft structural element by mean of Strain field pattern recognition techniques},
journal={16th European Conference on Composite Materials, ECCM 2014},
year={2014},
note={cited By 0},
url={https://www.scopus.com/inward/record.url?eid=2-s2.0-84915746874&partnerID=40&md5=6a05e3ea8cc1e0b2279c172f9c70eccd},
affiliation={Facultad de Ingeniería Aeronáutica, Grupo de Investigación en Ingeniería Aeroespacial, Universidad Pontificia Bolivariana, Medellín, Colombia; Área de Materiales Compuestos, Departamento de Materiales y Estructuras, INTA, Spanish Nacional Institute for Aerospace Technology, Madrid, Spain; AIRBUS Defence and Space, Les Mureaux Cedex, France; Departamento de Materiales y Producción Aeroespacial, Universidad Politécnica de Madrid, Spain},
abstract={A high stiffness and low weight lattice structure for launcher applications made with high modulus carbon fiber was manufactured by EADS CASA Space by using a new cost efficient fiber placement technology. The structure consisted of a composite lattice of intertwined, unidirectional carbon fiber bars. Several Fiber Bragg Gratings (FBGs) were bonded along these bars in order to measure strain during different tests performed on the structure. A robust procedure for defect detection based on Principal Component Analysis (PCA) and strain field pattern recognition techniques was used in order to identify different defects induced in the structure during static testing conducted until fracture. A test campaign of smaller, iso-grid structures was conducted with the aim of studying the sensitivity to detect small defects in the lattice structure. A PCA model was built for the healthy structure. Subsequently, different known damage conditions were projected into the PCA model (baseline). From this projection, various damage indices and detection thresholds were calculated. The results showed that even small damages located far away from the sensors could be detected by this technique.},
author_keywords={Fiber optic sensors; Isogrid; Principal component analysis; Strain field},
document_type={Conference Paper},
source={Scopus},
}
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