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FATIGUE LIFE PREDICTION OF THICK CFRP LAMINATES WITH TOUGHENED INTERLAMINAR LAYERS IN THE OUT-OF-PLANE DIRECTION AT DIFFERENT STRESS RATIOS

Atsushi Hosoi (Waseda University) Shiwon Tsuge (Waseda University) Sen Seki (Waseda University) Yuzo Fujita (Composite Materials Research Laboratories, Toray Industries) Ichiro Taketa (Toray) Hiroyuki Kawada (Waseda University)

 

The fatigue properties in the out-of-plane direction of thick CFRP laminates with toughened interlaminar layers were evaluated at different stress ratios. A model proposed to predict the fatigue life showed good agreement with experimental results.

 

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PROGRESSIVE FATIGUE DAMAGE MODELING OF COMPOSITE CURVED STRUCTURES USED IN OFFLOADING HOSES

Maikson Luiz Passaia Tonatto (Universidade Federal do Rio Grande do Sul) Maria Madalena de Camargo Forte (Universidade Federal do Rio Grande do Sul) Volnei Tita (USP) Sandro Amico (Universidade Federal do Rio Grande do Sul)

 

A progressive fatigue damage modeling is proposed in order to simulate the fatigue behavior of unidirectional curved structure made of carbon fiber composite materials.

 

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USE OF NON-CONTACTING STRAIN MEASUREMENT TECHNIQUES IN FATIGUE TESTING OF POLYMER MATRIX COMPOSITES

Peter Bailey (Instron) M. Higham (Instron)

 

This paper presents a short investigation of the benefits of non-contact strain measurement for monitoring and control of fatigue tests on composites, better simulation, and helping understand the effects of strain rate on properties.

 

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EXPERIMENTAL AND NUMERICAL CHARACTERIZATION OF THE HYGROTHERMAL AND STRAIN-RATE DEPENDENT BEHAVIOUR OF WOVEN GLASS FIBRE REINFORCED POLYAMIDE

Kodjo Mawuli Armattoe (Institut de Recherche Technologique (IRT) Jules Verne) Patrick Rozycki (Institut de Recherche en Génie Civil et Mécanique) Mamadou Mbacke (Institut de Recherche Technologique (IRT) Jules Verne)

 

This paper dealts with the influence of environmental conditions (temperature and humidity) and strain rate effect on the behavior of woven glass fiber reinforced polyamid 66.

 

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DYNAMIC CHARACTERISTICS OF COMPOSITE TAPERED TUBES

Sang-Kyun Hwang (Andong National Unversity) Hui Yun Hwang (Andong National Unversity)

 

 

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INVESTIGATION OF NOVEL BAGASSE FIBRE HYBRID CRASH BARRIERS USING NUMERICAL SIMULATION

Karthik Ram Ramakrishnan (Ecole des Mines d'Alès) Krishna Shankar (Univeristy of New South Wales, Canberra) Boju Hoo (University of New South Wales ) Alan Fien (University of New South Wales )

 

This paper presented the viability of designing deformable hybrid crash barriers with the natural fibres derived from sugarcane bagasse. Full-scale crash simulation was conducted using FE software LS-Dyna on two designs of hybrid composites.

 

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NUMERICAL MODELING OF DYNAMIC RESPONSE OF FABRIC MATERIALS SUBJECTED TO IMPACT LOADING

Efthimis Giannaros (University of Patras) Athanasios Kotzakolios (University of Patras) Stavros Tsantzalis (University of Patras) George Sotiriadis (University of Patras) Vassilis Kostopoulos (University of Patras)

 

The present research investigates the dynamic response of fabric materials subjected to impact loading. The major purpose of study is the implementation, calibration and validation of meso-scale technique and material model for fabrics modeling.

 

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RESEARCH OF MECHANICAL PROPERTIES OF HIGHLY-FILLED POLYMER COMPOSITES UNDER COMPLEX HARMONIC LOADINGS

Andrey Yankin (Perm National Research Polytechnic University) Roman Bulbovich (Perm National Research Polytechnic University) Valery E. Wildemann (Perm National Research Polytechnic University) Stanislav Slovikov (Perm National Research Polytechnic University)

 

In this work, nonlinear representations of stress and strain under two-frequency loadings were presented, and it was proposed to describe dynamic modules and loss angles by polynomials and to use a time-temperature superposition.

 

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INFLUENCES OF WATER ABSORPTION ON THE MECHANICAL PROPERTIES OF DISCONTINUOUS CF/PA6 AND CF/PP

Hao Piao (University of Tokyo) Yoshiaki Kiryu (University of Tokyo) Lubai Chen (University of Tokyo) Shinichiro Yamashita (University of Tokyo) Haowen Wei (University of Tokyo) Isamu Ohsawa (University of Tokyo) Jun Takahashi (University of Tokyo)

 

Influences of water absorption on the mechanical properties of discontinuous CF/PA6 composites were investigated. The mechanical properties of CF/PA6 composite present relatively present relatively high sensitivity on the water absorption.

 

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PREDICTION OF TENSILE CREEP FAILURE TIME

Yoshiki Kobayashi (Kanazawa Institute of Technology) Masayuki Nakada (Kanazawa Institute of Technology) Yasushi Miyano (Kanazawa Institute of Technology)

 

We propose the statistical prediction of creep failure time under the tension loading along the longitudinal direction of unidirectional CFRP based on the viscoelasticity of matrix resin. The applicability of our method is discussed experimentally.

 

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