Book of Abstracts

R. Joffe, L. Pupure, J. Varna, L. Wallström (Editors)

PROGRAM

Keynote lecture chaired by J. Varna
8:30-9:15
TESTING AND MODELLING OF NCF AND THIN PLY COMPOSITES DURING IMPACT, CRASH AND TRIAXIAL LOADING

Robin Olsson1

1RISE SICOMP, Box 104, SE-431 22 Mölndal, Sweden

Keywords: Polymer composites, NCF, Thin ply composites, Impact, Crash

Oral Session "Strain rate and energy absorption ‐ 1" chaired by Y. Swolfs and M. Quaresimin
9:15-10:35
9:15-9:35 BEARING FATIGUE LIFETIME AND CAI CAPABILITY OF FIBRE METAL LAMINATES (ID 103)

B. Fiedler1, R. Adelung2, M. Baytekin-Gerngross2, E. Sprecher1, J. Wegner1, M.-D. Gerngross2, J. Carstensen2, B. Bosbach1

11Institute of Polymer and Composites, Hamburg University of Technology, Denickestr. 15, 21073 Hamburg, Germany
2Chair for Functional Nanomaterials, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany

Keywords: Hybrid, FML, impact behaviour, surface treatment, nanoscale sculpturing

9:35-9:55 OFF-AXIS IBUS TEST FOR HIGH STRAIN RATE TESTING OF UD COMPOSITES (ID 104)

Xavier Régal1, Fabrice Pierron1

1Faculty of Engineering and Physical Sciences, University of Southampton, University Road, Southampton SO17 1BJ, UK

Keywords: High strain rate, high speed imaging, Virtual Fields Method, Grid Method, ultrasonics

9:55-10:15 FRICTION TESTS FOR SIMULATION OF ENERGY ABSORBING COMPOSITE STRUCTURES (ID 114)

Thomas Bru1, and Robin Olsson1

1RISE SICOMP, PO Box 104, SE-431 22 Mölndal, Sweden

Keywords: Friction test, Non-crimp fabric, Finite element analysis

10:15-10:35 HIGH STRAIN RATE MICROMECHANICAL TESTING OF COMPOSITE MATERIALS (ID 115)

Mario Rueda-Ruiz1,2, Ben D. Beake3 and Jon M. Molina-Aldareguia1

11IMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, Spain
2Department of Materials Science, Universidad Politécnica de Madrid, E. T. S. de Ingenieros de Caminos, 28040 Madrid, Spain
3Micro Materials Ltd, Willow House, Yale Business Village, Ellice Way, Wrexham LL13 7YL, UK

Keywords: Micromechanics of composite materials, Nano-impact, Dynamic mechanical properties, Finite element modelling

Coffee Break
10:35-11:10
Oral session "Strain rate and energy absorption ‐ 2" chaired by R. Olsson and B. Fiedler
11:10-12:30
11:10-11:30 CHARACTERISATION OF BEARING ENERGY ABSORPTION OF THIN-PLY BASED DISCONTINUOUS COMPOSITE (ID 116)

Sachin Francis1, Christopher Cameron1, Leif E. Asp2 and Maciej Wysocki3

1RISE SICOMP, Argongatan 30, SE 431 53, Gothenburg, Sweden
2Department of Industrial and Material Science, Chalmers University of Technology, Hörsalsvägen 7A, SE 412 96, Gothenburg, Sweden
3RISE Research Institute of Sweden, Box 857, SE 501 15, Borås, Sweden

Keywords: Discontinuous Composite, Bearing, Mechanical properties, Energy absorption

11:30-11:50 REALISING IMPACT DAMAGE TOLERANT BOULIGAND AND HERRINGBONE/BOULIGAND THIN-PLY CFRP STRUCTURES (ID 119)

Lorenzo Mencattelli1, and Silvestre T. Pinho1

1Department of Aeronautics, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom

Keywords: Herringbone, Damage tolerance, Bouligand, Bio-inspired, CFRP

11:50-12:10 INFLUENCE OF TEMPERATURE AND IMPACT ENERGY ON LOW-VELOCITY IMPACT DAMAGE AND RESIDUAL COMPRESSIVE STRENGTH OF CFRP (ID 129)

Johann Körbelin1, Bodo Fiedler1

1Institute of Polymer Composites, Hamburg University of Technology, Denickestraße 15, 21073 Hamburg, Germany

Keywords: Carbon Fibre, Damage Tolerance, Delamination, Thermomechanical, Mechanical testing

12:10-12:30 IMPROVING THE WEAK IMPACT RESISTANCE AND TOLERANCE OF THIN PLY BASED THIN LAMINATES USING NOVEL UNSYMMETRICAL LAMINATE DESIGN (ID 137)

Aravind Sasikumar1, Josep Costa1, Daniel Trias1, Peter Linde2,3

1AMADE, University of Girona, Campus Montilivi s/n 17073, Girona, Spain
2Airbus Operations GmbH, Kreetslag 10, 21129 Hamburg, Germany
3Chalmers University of Technology, Department of Industrial and Materials Science, S-41296, Gothenburg, Sweden

Keywords: Thin plies, Non-crimp fabrics, Impact behaviour, Damage tolerance, Unsymmetrical laminates

Lunch
12:30-13:30
Mini oral session chaired by R. Joffe
13:30-14:30
MECHANICAL AND FUNCTIONAL CHARACTERISATION OF FLAX / RECYCLED CARBON FIBRE HYBRID COMPOSITES (ID 105)

Marco L. Longana1, Vaclav Ondra1, and Ian Hamerton1

1Bristol Composites Institute (ACCIS), Department of Aerospace Engineering, School of Civil, Aerospace, and Mechanical Engineering, Queen's Building, University of Bristol, University Walk, Bristol, BS8 1TR, UK

Keywords: Flax Fibres, Recycled Carbon Fibres, Vibration Damping, Tensile Properties

MICROMECHANICAL MODEL OF CROSS-OVER FIBER BRIDGING (ID 110)

Frode Grytten1, Bent F. Sørensen2, Stergios Goutianos2, Reidar K. Joki3 and Jens K. Jørgensen1

1SINTEF Industry, Department of Materials and Nanotechnology, PB 124 Blindern, NO-0314 Oslo, Norway
2Department of Wind Energy, Technical University of Denmark, DK-4000 Roskilde, Denmark
33FiReCo AS, Storgata 15, NO-1607 Fredrikstad, Norway

Keywords: Polymer composites, Fracture resistance, Bridging laws

DEVELOPMENT AND FINITE ELEMENTS ASSESSMENT OF STACKING SEQUENCES FOR INTERLAMINAR FRACTURE TOUGHNESS TESTING OF ANGLE-PLY INTERFACES (ID 111)

Torquato Garulli1,2, Anita Catapano3, Daniele Fanteria2 and Julien Jumel1

1University of Bordeaux, Laboratory I2M CNRS UMR 5295, 33400 Talence, France
2University of Pisa, Civil and Industrial Engineering Department, Aerospace Section, 56122 Pisa, Italy
3Bordeaux INP, University of Bordeaux, Laboratory I2M CNRS UMR 5295, 33400 Talence, France

Keywords: Delamination, Fracture toughness, Laminated composites, Finite elements analysis, Angle-ply interfaces

A NOVEL TEST METHOD FOR THE INVESTIGATION OF THE COMBINED INFLUENCE OF THROUGH-THICKNESS COMPRESSION AND SHEAR STRESSES ON THE LONGITUDINAL FIBRE TENSILE STRENGTH OF CARBON FIBRE REINFORCED POLYMERS (ID 112)

Kilian Gruebler1, Stephen R. Hallett1 and Michael R. Wisnom1

1Bristol Composites Institute (ACCIS), University of Bristol, Queen’s Building, University Walk, Bristol, BS8 1TR, UK

Keywords: Fibre Failure, Complex Stress State, Polymer Composites, Digital Image Correlation, Finite Elements

AN INTEGRATED MACHINE LEARNING AND FINITE ELEMENT ANALYSIS FRAMEWORK, APPLIED TO COMPOSITE SUBSTRUCTURES INCLUDING DAMAGE (ID 113)

Tom Gulikers1, and Boyang Chen1

1Faculty of Aerospace Engineering, TU Delft, Kluyverweg 1, 2629 HS, Delft, The Netherlands

Keywords: Machine learning, Neural networks, Finite elements, Substructures, Homogenisation

DEFORMATION RATE EFFECTS ON TENSILE PROPERTIES OF NaOH TREATED RAMIE FIBER/PLA/PBAT COMPOSITES (ID 118)

Masahiro Nishida1, Shigeru Bito1, Hiroaki Ito2 and Norio Fukuda3

1Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, Japan
2Aichi Center for Industry and Science Technology, Owari Textiles Research Center, 35 Aza-Miyaura, Mabiki, Yamato-cho, Ichinomiya, Aichi, Japan
33Aichi Center for Industry and Science Technology, Industrial Research Center, 1-157-1 Onda-cho, Kariya, Aichi, Japan

Keywords: Natural fiber, Fiber treatment, Green Composites, Polymer blend

STUDY OF INFLUENCE OF MODIFY MANUFACTURING PARAMETERS ON DELAMINATION PROPERTIES IN A UNDIRECTIONAL GLASS FIBER/EPOXY RESIN COMPOSITE (ID 131)

Luis Torres1, Victor Tuninetti2, Paulo Flores3 and Gonzalo Pincheira1

1Department of Industrial Technologies, University of Talca, Camino a los Niches km1, Curicó, Chile
2Department of Mechanical Engineering, UFRO, Francisco Salazar 1145, Temuco, Chile
3Department of Mechanical Engineering, UDEC, Edmundo Larenas S/N, Concepción, Chile

Keywords: Fiber volume fraction, Glass fiber/epoxy, Delamination, Carbon nanotube, Interface angle

THE TRANSLAMINAR FRACTURE TOUGHNESS OF HIGH-PERFORMANCE POLYMER FIBRE COMPOSITES AND THEIR CARBON FIBRE HYBRIDS (ID 132)

Yoran Geboes1,2, Amalia Katalagarianakis1, Jan Ivens1, Yentl Swolfs1

1Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44 box 2450, 3001 Leuven, Belgium
2SIM vzw, Technologiepark 48, BE-9052 Zwijnaarde, Belgium

Keywords: Polymer composites, Translaminar fracture toughness, High-performance polymer fibres, Compact tension

THE EFFECT OF STEAM EXPLODED FIBRES ON THE MECHANICAL PERFORMANCE OF POLYMER COMPOSITE (ID 135)

Pooria Khalili1, Brina Blinzler1 and Roland Kádár2

1Division of Materials and Computational Mechanics, Department of Industrial and Materials Science, Chalmers University of Technology, Se-412 96 Gothenburg, Sweden
2Division os Engineering Materials, Department of Industrial and Materials Science, Chalmers University of Technology, Se-412 96 Gothenburg, Sweden

Keywords: Thermoplastic composites, Steam exploded fibres, Mechanical properties

POLYETHER SULFONE INTERLEAVED GLASS/CARBON HYBRID COMPOSITE UNDER IMPACT LOADING (ID 142)

Sakineh Fotouhi1, Joseph Clamp2, Amir Bolouri2, Mohamad Fotouhi1

1Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran
2Department of Engineering Design and Mathematics, University of the West of England (UWE), Bristol, BS16 1QY, UK

Keywords: Glass/Carbon, Hybrid, Impact, Interleaving, Polyether sulfone

MODEL OF ELASTICITY OF A LAMINATED COMPOSITE WITH ANISOTROPIC HETEROMODULAR LAYERS (ID 153)

Alexander I. Oleinikov1, Tatyana A. Kuzmina2

1Central Aerohydrodynamic Institute, 1 Zhukovsky Street, Zhukovsky, Moscow Region, 140180, Russian Federation
2Moscow Institute of Physics and Technology, 16 Gagarin street, Zhukovsky, Moscow Region, 140180, Russian Federation

Keywords: Laminated composites, Bimodulus, Behavior elastic model, Stiffness, Compliance

A REVIEW OF STRATEGIES FOR LOWERING STRESS CONCENTRATIONS DURING TENSILE TESTING OF COMPOSITE MATERIALS (ID 161)

Babak Fazlali1, Stepan V. Lomov1 and Yentl Swolfs1

1Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44 box 2450, 3001 Leuven, Belgium

Keywords: Unidirectional composites, Geometry effects, Tensile test, Tension-Tension Fatigue

EXPERIMENTAL INVESTIGATION OF DAMAGE FORMATION IN THIN-PLY COMPOSITES (ID 162)

Konstantinos Giannadakis1, Mohamed Sahbi Loukil1,2 and Florence Rinn3

1RISE SICOMP, Bröderna Ugglas Gata, Hus 208, Linköping, Sweden
2Linköping University, Division of Engineering Materials, 581 83 Linköping
3Oxeon AB, Företagsgatan 24, 504 64 Borås, Sweden

Keywords: Polymer composites, Digital Image Correlation, Mechanical properties, Finite elements

TIME-DEPENDENT PROPERTIES OF GRAPHENE REINFORCED HDPE (ID 163)

Zainab Al-Maqdasi1, Liva Pupure1, Nazanin Emami1 and Roberts Joffe1

1Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden

Keywords: Graphene nano-platelets, Polymer nano-composites, Viscoplasticity, Modelling

STRESSES IN DOUBLE-LAP ADHESIVE JOINT ANALYSED BY USE OF NUMERICAL MODEL WITH SPECIAL BOUNDARY CONDITIONS AND MATERIAL NON-LINEARITY (ID 166)

Nawres J. Al-Ramahi1,2, Roberts Joffe1 and Janis Varna1

1Division of Materials Science, Luleå University of Technology, SE-971 87 Luleå, Sweden
2Institute of Technology / Baghdad, Middle Technical University, Baghdad, Iraq

Keywords: Composites, Double-lap joint, Adhesive joints, Stress distribution, Finite element method

EFFECT OF LOCAL DELAMINATIONS ON THE IN-PLANE STIFFNESS OF CROSS-PLY LAMINATES (ID 167)

H. Ben Kahla1and Janis Varna1

1Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden

Keywords: Intralaminar cracks, Local delamination, COD, FEM

Coffee break and poster session
14:30-16:10
Oral session "Phenomena in complex loading ‐ 1" chaired by P.A. Carraro and F. Laurin
16:10-17:30
16:10-16:30 NONDESTRUCTIVE CHARACTERIZATION OF DAMAGE IN POLYMER MATRIX COMPOSITES FOR ENHANCED LIFE MANAGEMENT (ID 117)

Eric A. Lindgren1, John Aldrin2, John Wertz1, Norm Schehl3, John Welter1, David Zainey3, Victoria Kramb3, Michael Uchic1, and Sarah Wallentine1

1US Air Force Research Laboratory, 2230 10th Street, WP AFB, OH 45433, USA
2Computational Tools, Gurnee, Il 60031 USA
3University of Dayton Research Institute, 2230 10th Street, WP AFB OH 45433

Keywords: Polymer composites, Nondestructive evaluation, Ultrasound, Life management

16:30-16:50 FIBRE BREAKS IN INTERLAYER HYBRID COMPOSITES DETECTED WITH IN-SITU SYNCHROTRON COMPUTED TOMOGRAPHY AND SIMULATED WITH A FIBRE BREAK MODEL (ID 133)

Francisco Mesquita1, Christian Breite1, Yentl Swolfs1, Stepan V. Lomov1 and Larissa Gorbatikh1

1Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44 box 2450, 3001 Leuven, Belgium

Keywords: Synchrotron CT, Hybrid composites, Fibre breaks, Modelling

16:50-17:10 IMPROVING THE ARCAN SPECIMEN FOR COMBINED TENSION/COMPRESSION AND SHEAR TESTING OF FIBRE REINFORCED COMPOSITES (ID 140)

Tobias Laux1, Khong Wui Gan2, Janice M. Dulieu-Barton1 and Ole T. Thomsen1

1Faculty of Engineering and Physical Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK
2University of Southampton Malaysia, Kota Ilmu Educity at Iskandar, 79200 Iskandar Puteri, Johor, Malaysia

Keywords: Polymer composites, Multiaxial testing, Modified Arcan fixture, Specimen optimisation

17:10-17:30 REAL-TIME DIGITAL IMAGE CORRELATION APPLICATIONS TO COMPOSITE MECHANICAL TESTING (ID 159)

Victor Couty1, Eric Deletombe2, Julien Berthe2, Jean-François Witz1, Pauline Lecomte-Grosbras1 and Mathias Brieu3

1Univ. Lille, CNRS, Centrale Lille, FRE 2016 – LaMcube – Laboratoire de mécanique multiphysique multiéchelle, F-59000, Lille, France
2ONERA Lille, 5 rue des Fortifications, 59045 Lille, France
33Department of Mechanical Engineering, California State University-Los Angeles, 5151 State University Drive, Los Angeles, United States

Keywords: Digital Image Correlation, Proper Orthogonal Decomposition, Finite Elements, Identification, Multiaxial testing

Break
17:30-19:00
Conference Dinner
19:00