IRF: Institutional Repository FHNW
Welcome to the publication and research database of the FHNW University of Applied Sciences and Arts Northwestern Switzerland.
The institutional repository contains publications, projects and student theses.
Further information can be found in the IRF manual (available in German).
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Recently added
Plädoyer für einen reflexiven Umgang mit dem ambivalenten Charakter von Barrieren in der (sonder)pädagogischen Gestaltung
(Reinhardt, 2012) Reutlinger, Christian; Lingg, Eva
01A - Journal article
Fracture toughening of carbon fiber composites based on electrospun nanofiber interleafs
(MDPI, 2026) Schär, Matthias; Yoosefinejad, Ata; Sanandiya, Naresh; Heravi, Hamed; Adl, Peyman; Tischhauser, Frederick; Eglitis, Edgars; Hajikazemi, Mohammad; Brauner, Christian
Delamination is a critical failure mode in composite laminates that degrades the structural performance and load-carrying capacity. This study investigates the improvement of Mode I and Mode II interlaminar fracture toughness of carbon fiber-reinforced polymer (CFRP) laminates through the interleaving of electrospun thermoplastic nanofiber mats. Nanofiber veils were inserted between carbon fiber plies to enhance resistance to delamination under tensile opening (Mode I) and in-plane shear (Mode II) loading. The effects of nanofiber interleaving were evaluated using double cantilever beam (DCB) tests for Mode I and end notch flexure (ENF) tests for Mode II. Both tests were conducted on a symmetric quasi-isotropic laminate [-45/45/90/05]s containing a thick unidirectional 0° ply at the mid-plane. Thermally induced residual stresses resulting from mismatches in ply coefficients of thermal expansion and unsymmetric arm lay-ups were accounted for in the experimental determination of fracture toughness. These stresses, generated during cooling from the cure temperature, influence the effective strain energy release rate and were included in the fracture toughness calculations to ensure accurate toughness evaluation and consistency with numerical predictions. The results demonstrate improved delamination fracture toughness, highlighting the potential of nanofiber interleaving for aerospace and wind energy applications.
01A - Journal article
Der ambivalente Charakter von Barrieren – Zum reflexiven Umgang mit Barrierefreiheit in der (sonder)pädagogischen Gestaltung
(Psychosozial-Verlag, 2011) Reutlinger, Christian; Lingg, Eva
01A - Journal article
Von der Sozialraumorientierung zur Sozialraumarbeit. Eine Entwicklungsperspektive für die Sozialpädagogik?
(Beltz Juventa, 2008) Reutlinger, Christian; Wigger, Annegret
01A - Journal article