Influence of thermo-oxidative aging on the impact property of conventional and graphene-based carbon fabric composites

2014 ◽  
Vol 34 (2) ◽  
pp. 116-130 ◽  
Author(s):  
Wei Fan ◽  
Jia-lu Li ◽  
Huan Wang ◽  
Dan-dan Guo
2015 ◽  
Vol 137 (1) ◽  
Author(s):  
Xinrui Zhang ◽  
Xianqiang Pei ◽  
Qihua Wang ◽  
Tingmei Wang

Carbon fabric/phenolic composites modified with potassium titanate whisker (PTW) were prepared by a dip-coating and hot-press molding technique, and the tribological properties of the resulting composites were investigated systematically using a ring-on-block arrangement under different sliding conditions. Experimental results showed that the optimal PTW significantly decreased the wear-rate. The worn surfaces of the composites and the transfer film formed on the counterpart steel ring were examined by scanning electron microscopy (SEM) to reveal the wear mechanisms. The transfer films formed on the counterpart surfaces made contributions to the improvement of the tribological behavior of the carbon fabric composites. The friction and wear of the filled carbon fabric composites was significantly dependent on the sliding conditions. It is observed that the wear-rate increased with increasing applied load and sliding speeds.


2011 ◽  
Vol 66-68 ◽  
pp. 683-687 ◽  
Author(s):  
Li Zhang ◽  
Yan Jue Gong ◽  
Shuo Zhang

By designing the different formulations of the composites and adopting optimized technology including extrusion and molding, the effects of the Micro-capsules on the properties of nylon composites are analyzed by the impact property test. The mechanical impact property of the glass fiber reinforced nylon composites is influenced little if the content of the self-healing microcapsules added is less than 3.5%, and the technology of self-healing microcapsules used in the polymer composite gear is feasible.


2021 ◽  
Vol 1037 ◽  
pp. 161-166
Author(s):  
Phone Thant Kyaw ◽  
Pyae Phyo Maung ◽  
Galina V. Malysheva

This paper presents the development of methods for improving the thermal conductivity of fiber reinforcing materials based on the fabric structures. The thermal analysis of fabric structure in thermal load calculation is performed by Fourier’s Law of Thermal Conduction and Steady-State Thermal calculation in Siemens NX. This study leads to the development of thermal conductivity in manufacturing technology of fiber reinforcing materials. Keywords: Thermal conductivity, fabric structure, polymer composite materials


1996 ◽  
Vol 5 (2) ◽  
pp. 096369359600500 ◽  
Author(s):  
Yasunobu Hirai ◽  
Hiroyuki Hamada ◽  
Jang-Kyo Kim

Instrumented impact test was used to assess the impact performance of E-glass woven fabric reinforced vinyl ester matrix composites. Evaluation of the damages with the aid of optical microscopy revealed substantial differences in the shape, mode and area of damage between the front and back surfaces of impact and between laminates with different fibre surface treatments. Apart from the extensive delamination in the central damage region, interface debonding occurred along the warp and weft directions in the surrounding regions near the back face of impact which contributed significantly to the total damage area of the laminate.


1978 ◽  
Vol 51 (1) ◽  
pp. 1-6 ◽  
Author(s):  
R. A. Pett ◽  
R. J. Tabar

Abstract For the type of natural rubber compound used in the impact absorbing bumper system, it has been shown that an apparent zero order reaction rate is valid for the degradation of tensile strength, elongation at break and tear strength during oven aging. The zero order rate applies to aging times beyond an induction period and prior to the onset of hardening. Since the rates follow the Arrhenius equation for rate-temperature dependence, accelerated aging can be readily applied to the prediction of long term changes in properties (within the temperature range of 82–171°C). The magnitude of the activation energy determined from losses in mechanical properties indicates the dominance of oxidative degradation as the mechanism of the losses in properties.


2017 ◽  
Vol 107 (10) ◽  
pp. 743-747
Author(s):  
M. Prof. Liewald ◽  
L. Marx

Das Institut für Umformtechnik (IFU) an der Universität Stuttgart befasst sich derzeit mit der Entwicklung eines neuartigen Verfahrens zum formschlüssigen Fügen von Aluminium- und Carbonstrukturen. Zwei Aluminiumbleche werden dabei lokal auf ein Temperaturniveau knapp oberhalb ihrer Solidustemperatur erwärmt, sodass ein dazwischenliegendes Carbongewebe durch die dann teilflüssige Aluminiummatrix infiltriert werden kann. Dieser Fachartikel befasst sich mit dem Einfluss wichtiger Prozessparameter.   The Institute for Metal Forming Technology (IFU) of the University of Stuttgart aims at the development of a novel joining method for combining aluminium and carbon fibre structures. Two aluminium sheets with carbon fabric in between are conductively heated by two electrodes up to semi-solid state, so the woven carbon fabric is infiltrated with aluminium. This paper focuses on the impact of different process and sample parameters on the quality of the joint.


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