High temperature compressive behavior of three-dimensional five-directional braided composites
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Jiayi Liu
Abstract
An experimental study was performed to investigate the high temperature compressive properties and failure mechanism of three-dimensional (3D) five-directional braided composites. The compression tests of 3D braided composites were conducted at six different temperatures. The failure modes, stress-strain curves, compressive modulus and strength at high temperature were analyzed and compared with those at room temperature. The results showed that temperature has a visible impact on these parameters. The 3D braided composites failed due to shear fracture, and the stress-strain curves exhibited obvious linear elasticity and a brittle failure feature at 20 and 50 °C, while the failure was characterized by fiber/matrix interface debonding, fiber bundles loosening and by outward expansion, and the stress-strain curves exhibited an obvious non-linear trend and a plastic failure feature at 70, 90, 110 and 130 °C. The compressive modulus and strength decreased as temperature increased. The compressive modulus and strength decreased by 92.9 % and 94.1 % as the temperature increased from 20 °C to 130 °C, which was mainly due to the degradation of the matrix properties and fiber/matrix interface properties at high temperature.
Kurzfassung
Die Hochtemperatur-Kompressionseigenschaften und der Versagensmechanismus von dreidimensional und in fünf Richtungen geflochtenen Kompositen wurden für diesen Beitrag experimentell untersucht. Die Kompressionstests der 3D geflochtenen Komposite wurden bei sechs verschiedenen Temperaturen durchgeführt. Es wurden die Versagensmodi, die Spannungs-Dehnungs-Kurven, der Druckmodul und die Festigkeit bei hohen Temperaturen analysiert und mit denen bei Raumtemperatur verglichen. Die Ergebnisse zeigen, dass die Temperatur einen sichtbaren Einfluss auf diese Werkstoffeigenschaften hat. Die dreidimensional geflochtenen Komposite versagten durch Schubspannungsbruch, und die Spannungs-Dehnungs-Kurven zeigten eine lineare Elastizität und ein sprödes Versagen bei 20 und 50 °C, während das Versagen durch eine Trennung der Faser-Matrix-Grenzfläche, eine Lockerung der Faserbündel und auswärts gerichtete Verlängerung charakterisiert wurde und die Spannungs-Dehnungs-Kurven einen sichtbaren nichtlinearen Trend und Merkmale plastischen Versagens bei 70, 90, 110 und 130 °C aufwiesen. Der Druckmodul und die Festigkeit nahmen um 92.9 % und 94.1 % ab, als die Temperatur von 20 auf 130 °C anstieg, was hauptsächlich auf die Degradation der Matrixeigenschaften und der Eigenschaften der Faser-Matrix-Grenzfläche bei hohen Temperaturen zurückzuführen war.
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© 2018, Carl Hanser Verlag, München
Artikel in diesem Heft
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- An investigation of the crash performance of magnesium, aluminum and advanced high strength steels and different cross-sections for vehicle thin-walled energy absorbers
- Model-based correlation between change of electrical resistance and change of dislocation density of fatigued-loaded ICE R7 wheel steel specimens
- Tensile strength of 3D printed materials: Review and reassessment of test parameters
- Numerical calculation of stress concentration of various subsurface and undercutting pit types
- Chemical composition of chosen phase constituents in austempered ductile cast iron
- Investigation of initial yielding in the small punch creep test
- Optimization and characterization of friction surfaced coatings of ferrous alloys
- Influence of the milling process on TiB2 particle reinforced Al-7 wt.-% Si matrix composites
- In-situ compaction and sintering of Al2O3 – GNP nanoparticles using a high-frequency induction system
- Strain-rate controlled Gleeble experiments to determine the stress-strain behavior of HSLA steel S960QL
- Thermography using a 1D laser array – From planar to structured heating
- Schichtdickenbestimmung von Oberflächenschutzsystemen für Beton mit Impulsthermografie
- Microstructure and mechanical properties of fly ash particulate reinforced AA8011 aluminum alloy composites
- High temperature compressive behavior of three-dimensional five-directional braided composites
- Dry sliding behavior of the aluminum alloy 8011 composite with 8 % fly ash
- Review on nanostructures from catalytic pyrolysis of gas and liquid carbon sources
Artikel in diesem Heft
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- An investigation of the crash performance of magnesium, aluminum and advanced high strength steels and different cross-sections for vehicle thin-walled energy absorbers
- Model-based correlation between change of electrical resistance and change of dislocation density of fatigued-loaded ICE R7 wheel steel specimens
- Tensile strength of 3D printed materials: Review and reassessment of test parameters
- Numerical calculation of stress concentration of various subsurface and undercutting pit types
- Chemical composition of chosen phase constituents in austempered ductile cast iron
- Investigation of initial yielding in the small punch creep test
- Optimization and characterization of friction surfaced coatings of ferrous alloys
- Influence of the milling process on TiB2 particle reinforced Al-7 wt.-% Si matrix composites
- In-situ compaction and sintering of Al2O3 – GNP nanoparticles using a high-frequency induction system
- Strain-rate controlled Gleeble experiments to determine the stress-strain behavior of HSLA steel S960QL
- Thermography using a 1D laser array – From planar to structured heating
- Schichtdickenbestimmung von Oberflächenschutzsystemen für Beton mit Impulsthermografie
- Microstructure and mechanical properties of fly ash particulate reinforced AA8011 aluminum alloy composites
- High temperature compressive behavior of three-dimensional five-directional braided composites
- Dry sliding behavior of the aluminum alloy 8011 composite with 8 % fly ash
- Review on nanostructures from catalytic pyrolysis of gas and liquid carbon sources