Explanipedia

Plasma electrolytic oxidation coating for aluminium and glass-fibre polyamide 6 bonding Open

Aleksey Yerokhin, D.T.A. Matthews, Laurent Warnet, Matthijn de Rooij, Jamal Seyyed Monfared Zanjani · 2025

Quantifying the Heat Load to Conductors Due to Strain Energy Release in CTD-101 K Magnet Impregnant Open

Jan van Steenlandt, A. Kario, S. Otten, Laurent Warnet, S. Wessel , et al. · 2025

State-of-the-art Nb3Sn superconducting accelerator magnets are still prone to lengthy training. This study investigates whether direct heat from fractures in commonly used magnet impregnant is sufficient to cause the instabilities during t…

On the thickness and layup dependence on failure mechanisms during unfolding of curved woven composites Open

R.D.R. Sitohang, Sam Benou, Laurent Warnet, Remko Akkerman · 2025

This study investigates the failure mechanisms of curved woven Glass/Polyphenylene sulfide (G/PPS) composites and characterizes the critical strains associated with the occurrence of damages during unfolding. Tensile-bending tests were car…

Modeling anisotropic friction in triaxial overbraiding simulations Open

Anh Ngoc Vu, W.J.B. Grouve, Laurent Warnet, Remko Akkerman · 2023

Triaxial overbraiding is a highly intricate textile manufacturing process that involves interlacing yarns in three directions, enhancing reinforcement of the final composite compared to biaxial braids. Predictive process simulation is a co…

DESIGN METHODOLOGY OF A COMPOSITE SHEAR RESISTANT FLEXURE FOR A MORPHING STRUCTURE Open

Maureen Materman, Sam Benou, Laurent Warnet, R.D.R. Sitohang, Wouter Van der Eijk , et al. · 2023

This paper reports on the methodology behind the development of fiber reinforced thermoplastic flexures meant for a movable morphing application.A concept using a flexible skin and these so-called Shear Resistant Flexure (SRF) connect a fi…

The relation between in-plane fiber waviness severity and first ply failure in thermoplastic composite laminates Open

R.D.R. Sitohang, W.J.B. Grouve, Laurent Warnet, Sebastiaan Wijskamp, Remko Akkerman · 2022

The influence of in-plane fiber waviness on the first ply failure of quasi-isotropic thermoplastic composite laminates was investigated. The failure mode and stress at first failure were studied by using a four-point bending test and an en…

Effect of in-plane fiber waviness defects on the compressive properties of quasi-isotropic thermoplastic composites Open

R.D.R. Sitohang, W.J.B. Grouve, Laurent Warnet, Remko Akkerman · 2021

The influence of in-plane fiber waviness defects on the compressive properties of quasi-isotropic (QI) carbon polyether-ether-ketone (C/PEEK) composites was investigated experimentally. Specimens with localized waviness were manufactured u…

Long‐term failure of transversely loaded glass/<span>iPP</span> Open

Ozan Erartsın, Stijn A. J. J. Arntz, Enrico M. Troisi, Leonid V. Pastukhov, Martin van Drongelen , et al. · 2021

Herein, temperature‐dependent long‐term behavior of polypropylene and its transversely loaded unidirectional glass fiber reinforced composite is investigated and a lifetime prediction method is proposed, which is based on the observed long…

Tool-ply interaction in the formation of waviness during C/PEEK consolidation Open

E.T.M. Krämer, W.J.B. Grouve, Laurent Warnet, Sotiris Koussios, Remko Akkerman · 2021

It is well established that fiber waviness in continuous fiber-reinforced polymer composites is a defect rather than an aesthetic flaw, as it potentially leads to a severe knockdown of the mechanical properties. Consequently, it is desirab…

35 years of standardization and research on fracture of polymers, polymer composites and adhesives in ESIS TC4: Past achievements and future directions Open

Andreas J. Brunner, Laurent Warnet, B.R.K. Blackman · 2021

Since its first meeting in 1985, ESIS TC4 has held regular semiannual meetings with between 15 and 35 participants, has organized a series of conferences (the first in 1994, then triennial since 1999) and has developed six ISO test standar…

Determination of the Fracture Resistance of Ductile Polymers: The ESIS TC4 Recent Experience Open

Francesco Baldi, Silvia Agnelli, Luca Andena, B.R.K. Blackman, Leonardo Castellani , et al. · 2020

Round-robin (RR) tests carried out under the direction of the Technical Committee 4, “Polymers, Polymer Composites and Adhesives,” of the European Structural Integrity Society (ESIS TC4) showed that the multispecimen methodology employed f…

On an application of multi-material composite laminates in the aerospace sector Open

Hans Luinge, Laurent Warnet · 2020

This paper explores the possibility to use shredded thermoplastic laminates as one of the plies within a laminate. The focus lies in potential performance decrease due to the presence of such compounds within the laminate. For this purpose…

Real-time observation of waviness formation during C/PEEK consolidation Open

E.T.M. Krämer, W.J.B. Grouve, Sotiris Koussios, Laurent Warnet, Remko Akkerman · 2020

Fully Recyclable Bio‐Based Thermoplastic Materials from Liquefied Wood Open

M. Pilar Ruiz, Janine Mijnders, Rogier Tweehuysen, Laurent Warnet, Martin van Drongelen , et al. · 2019

A novel, low‐cost, and fully recyclable thermoplastic material is produced from liquefied lignocellulosic biomass and natural fibers. The matrix, which is the heavy fraction of the liquefaction product, is characterized in terms of molecul…

Towards the combination of automated lay-up and stamp forming for consolidation of tailored composite components Open

T. K. Slange, W.J.B. Grouve, Laurent Warnet, Sebastiaan Wijskamp, Remko Akkerman · 2019

Rapid Manufacturing of a Tailored Spar by AFP and Stamp Forming Open

T. K. Slange, Yannick Martijn Buser, Sebastiaan Wijskamp, Laurent Warnet, Remko Akkerman · 2018

Effects of misalignments on thermally induced shapes of woven fabric reinforced laminates Open

Laurent Warnet, R H Schrijver, Remko Akkerman · 2018

Fabric misalignment leads to unsymmetry in fibre reinforced composite laminates. This unsymmetry induces out-of-plane deformation after processing. This paper evaluates the influence of fabric misalignment on the out-of-plane deformation o…

Assessment of failure and cohesive zone length in co-consolidated hybrid C/PEKK butt joint Open

İsmet Baran, Laurent Warnet, Remko Akkerman · 2018

Effect of cooling rate on the interlaminar fracture toughness of unidirectional Carbon/PPS laminates Open

Francisco Sacchetti, W.J.B. Grouve, Laurent Warnet, Irene Fernández Villegas · 2018

Effect of resin-rich bond line thickness and fibre migration on the toughness of unidirectional Carbon/PEEK joints Open

Francisco Sacchetti, W.J.B. Grouve, Laurent Warnet, Irene Fernández Villegas · 2018

Interlaminar fracture toughness of 5HS Carbon/PEEK laminates. A comparison between DCB, ELS and mandrel peel tests Open

Francisco Sacchetti, W.J.B. Grouve, Laurent Warnet, Irene Fernández Villegas · 2017

Deformability of a woven fabric modified with in-situ grown nanofibres Open

V. Koissin, Željko Kotanjac, Laurent Warnet, Leon Lefferts, Remko Akkerman · 2017

The deformability of a textile fabric (as received, or with in-situ grown carbon nano-fibres, or with a thermal treatment) is studied experimentally using bending, compression, in-plane shear, and friction. These tests reveal that the in-s…

Transverse crack initiation under combined thermal and mechanical loading of Fibre Metal Laminates and Glass Fibre Reinforced Polymers Open

W. van de Camp, M. Dhallé, Laurent Warnet, Wilhelm A.J. Wessel, G. S. Vos , et al. · 2017

The paper describes a temperature-dependent extension of the classical laminate theory (CLT) that may be used to predict the mechanical behaviour of Fibre Metal Laminates (FML) at cryogenic conditions, including crack initiation. FML are c…

Effects of release media on the fusion bonding of carbon/PEEK laminates Open

Francisco Sacchetti, W.J.B. Grouve, Laurent Warnet, Irene Fernández Villegas · 2016

Carbon Nanofibers Grown on Large Woven Cloths: Morphology and Properties of Growth Open

V. Koissin, T.C. Bor, Željko Kotanjac, Leon Lefferts, Laurent Warnet , et al. · 2016

The morphology and chemical composition of carbon nanofibers in situ grown on a large carbon-fiber woven fabric are studied using SEM measurements, X-ray Diffraction, X-ray Flourescence, and X-ray Photoelectron Spectroscopy. Results show t…

Vibro-acoustic modulation–based damage identification in a composite skin–stiffener structure Open

Ted Ooijevaar, Matthew D. Rogge, Richard Loendersloot, Laurent Warnet, Remko Akkerman , et al. · 2016

Vibro-acoustic modulation–based damage identification relies on the modulation of a high-frequency carrier signal by an intenser low-frequency vibration signal due to damage-induced structural nonlinearities. A time domain analysis of the …

Characterisation of metal–thermoplastic composite hybrid joints by means of a mandrel peel test Open

Yibo Su, Matthijn de Rooij, W.J.B. Grouve, Laurent Warnet · 2016

Woven fabric composites: Can we peel it? Open

Francisco Sacchetti, W.J.B. Grouve, Laurent Warnet, Irene Fernández Villegas · 2016

The present work focuses on the applicability of the mandrel peel test to quantify the fracture toughness of woven fabric Carbon/PEEK composites. For this purpose, the mandrel peel test was compared to the standardized DCB test. Unstable c…

Synthesis of Carbon Nanofibers on Large Woven Cloth Open

Željko Kotanjac, Leon Lefferts, V. Koissin, Laurent Warnet, Remko Akkerman · 2015

This experimental study aims at the in situ growth of carbon nano-fibers (CNFs) on relatively large (25 × 30 cm2) single-layer carbon-fiber fabrics. It is shown that CNFs can be grown with the distribution potentially suitable for a future…

Impact damage identification in composite skin-stiffener structures based on modal curvatures Open

Ted Ooijevaar, Laurent Warnet, Richard Loendersloot, Remko Akkerman, Tiedo Tinga · 2015

The feasibility of a vibration-based damage identification approach for impact damage in two advanced composite skin-stiffener structures is investigated in this paper. Mode shape curvatures combined with the modal strain energy damage ind…

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