scholarly journals Effect of Various Filler Materials on Interlaminar Shear Strength (ILSS) of Glass/Epoxy Composite Materials

2016 ◽  
Vol 6 (5) ◽  
pp. 22-29 ◽  
Author(s):  
C.Venkateshwar Reddy ◽  
◽  
P.Ramesh Babu ◽  
R. Ramnarayanan
Keyword(s):  
Shear Strength ◽  
Composite Materials ◽  
Epoxy Composite ◽  
Interlaminar Shear Strength ◽  
Filler Materials ◽  
Interlaminar Shear

Analysis of methods of determining the interlaminar shear strength of composite materials

1977 ◽  
Vol 12 (4) ◽  
pp. 573-580 ◽  
Author(s):  
I. G. Zhigun ◽  
V. A. Yakushin ◽  
Yu. N. Ivonin
Keyword(s):  
Shear Strength ◽  
Composite Materials ◽  
Interlaminar Shear Strength ◽  
Interlaminar Shear

DEGRADATION OF CARBON FIBER/EPOXY COMPOSITES BY XE LAMP AND HUMIDITY

2006 ◽  
Vol 20 (25n27) ◽  
pp. 3686-3691 ◽  
Author(s):  
XIAOJUN LV ◽  
QI ZHANG ◽  
GUOJUN XIE ◽  
GUANJIE LIU
Keyword(s):  
Shear Strength ◽  
Carbon Fiber ◽  
Epoxy Composite ◽  
Interlaminar Shear Strength ◽  
Epoxy Composites ◽  
Radiation Temperature ◽  
Transverse Tensile ◽  
Interlaminar Shear ◽  
Transverse Tensile Strength ◽  
Carbon Fiber Epoxy

In order to understand the effect of natural environmental factors on the carbon fiber/epoxy composites, the degradation of carbon fiber/epoxy composite was studied. The specimens were exposed in a Xe lamp chamber and suffered to ultraviolet light radiation, temperature and/or humidity conditions. The results show that the radiation, temperature and/or humidity could cause extensive corrosion to the surface and interior of the carbon/epoxy composite and attack the interface between matrix and carbon fiber, resulting in an obvious reduction of the transverse tensile strength and interlaminar shear strength. On the contrary, the longitudinal transverse shear strength was not affected much by the radiation, temperature and/or humidity. The results indicate that the radiation, temperature and/or humidity can result in the corrosion of the carbon/epoxy composite and consequently affect the mechanical properties of the carbon/epoxy composite partially.

The Edge Shear Test - An Alternative Testing Method for the Determination of the Interlaminar Shear Strength in Composite Materials

2015 ◽  
Vol 825-826 ◽  
pp. 806-813 ◽  
Author(s):  
Kay André Weidenmann ◽  
Lisa Baumgärtner ◽  
Benedikt Haspel
Keyword(s):  
Shear Strength ◽  
Composite Materials ◽  
Shear Test ◽  
Shear Failure ◽  
Interlaminar Shear Strength ◽  
Shear Load ◽  
Testing Method ◽  
Shear Loads ◽  
Interlaminar Shear

The interlaminar shear strength is a characteristic value describing the mechanical behavior of composite materials such as laminates. Several methods for the determination of the interlaminar shear strength are described in open literature by several authors. Among these methods, the ILSS test (DIN EN ISO 14130) measuring the apparent interlaminar shear strength by using a modified bending test is the state of the art technique, as both the necessary testing equipment and the sample geometry are quite common. However, the ILSS tests implements shear loads indirectly by bending often leading to sample failure which is then not solely initiated by shear loads. Particularly for ductile matrices or those showing pronounced elastic behavior under bending, no interlaminar shear failure can be implemented and the interlaminar shear strength can not been determined or – if the user is not sensitized to the identification of non-shear failure behavior – the determined value is not correct.Up to now, alternative methods for determining the interlaminar shear strength implementing a shear load directly to the sample are quite elaborate regarding the test equipment to be used or the specimen preparation and geometry. In this contribution the authors present a novel test setup for an edge shear test which allows both a direct shear load and at the same time a reduced complexity of the specimen geometry which is comparable to those used in the ILSS test. The authors present results based on this novel testing method in comparison to conventional ILSS tests.

Synergistic effect of nano-ZrO2/graphene oxide hybrid system on the high-velocity impact behavior and interlaminar shear strength of basalt fiber/epoxy composite

2019 ◽  
pp. 152808371987992 ◽  
Author(s):  
Davood Toorchi ◽  
Hamed Khosravi ◽  
Esmaeil Tohidlou
Keyword(s):  
Shear Strength ◽  
Graphene Oxide ◽  
High Velocity ◽  
Zirconium Oxide ◽  
Epoxy Composite ◽  
Basalt Fiber ◽  
Interlaminar Shear Strength ◽  
High Velocity Impact ◽  
Velocity Impact ◽  
Interlaminar Shear

The aim of this work was to study the influence of nano-zirconium oxide, graphene oxide, and nano-zirconium oxide + graphene oxide hybrid system on the high-velocity impact behavior and interlaminar shear strength of basalt fiber/epoxy composite. Initially, the nano-zirconium oxide and graphene oxide were functionalized by using a silane-coupling agent namely 3-aminopropyltrimethoxysilane. In order to confirm the surface functionalization of nano-zirconium oxide and graphene oxide, Fourier transform infrared spectroscopy and energy-dispersive X-ray spectroscopy were carried out on both untreated and silanized fillers. Then, 15 types of specimens containing various amounts of nano-zirconium oxide (1, 2, and 3 wt.%), graphene oxide (0.1, 0.3, and 0.5 wt.%), or nano-zirconium oxide + graphene oxide hybrid in the matrix were prepared. The comparative results of the experiments showed that the specimen with 2 wt.% nano-zirconium oxide + 0.1 wt.% graphene oxide had the highest values of energy absorption, impact limit velocity, and interlaminar shear strength. The energy absorption and limit velocity of this specimen enhanced by 67 and 30%, respectively, as compared to the neat basalt fiber/epoxy composite, while its interlaminar shear strength increased by 77%. The fracture surfaces of the specimens demonstrated that the introduction of nanofillers in the matrix improved the adhesion between the basalt fibers and polymeric matrix. The findings of this work clearly showed that the simultaneous addition of graphene oxide and nano-zirconium oxide is a promising method for improving the high-velocity impact properties and interlaminar shear strength of fibrous composites.

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