scholarly journals Fatigue behavior of non-crimp 3D orthogonal weave and multi-layer plain weave E-glass reinforced composites

2010 ◽  
Vol 70 (14) ◽  
pp. 2068-2076 ◽  
Author(s):  
Valter Carvelli ◽  
Giulia Gramellini ◽  
Stepan V. Lomov ◽  
Alexander E. Bogdanovich ◽  
Dmitri D. Mungalov ◽  
...  
Keyword(s):  
Fatigue Behavior ◽  
Reinforced Composites ◽  
Plain Weave ◽  
Glass Reinforced Composites

Fatigue Behavior of Impacted Plain-Weave Glass/Epoxy Composites under Tensile Fatigue Loading

2005 ◽  
Vol 297-300 ◽  
pp. 1291-1296 ◽  
Author(s):  
Ki Weon Kang ◽  
Jung Kyu Kim ◽  
Heung Seob Kim
Keyword(s):  
Fatigue Life ◽  
Impact Damage ◽  
Fatigue Behavior ◽  
Fatigue Loading ◽  
Epoxy Composites ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Damage Behavior ◽  
Plain Weave ◽  
The Impact

The goals of this paper are to identify the impact damage behavior of plain-weave E-glass/epoxy composites and predict the fatigue life of the composites with impact-induced damage under constant amplitude loading. To identify these behaviors, the low velocity impact and fatigue after impact tests are performed for glass/epoxy composites having two types of fiber orientations. The impact damage behavior is dependent on the fiber orientation of the composites. The fatigue life of the impacted composites can be identified through the prediction model, which was proposed on the carbon/epoxy laminates by authors regardless of fiber orientations.

Oxynitride Glass Reinforced Cement Composites

1990 ◽  
Vol 211 ◽  
Author(s):  
Gary. L. Leatherman ◽  
Tahar El-Korchi ◽  
Thomas M. Holmes ◽  
R. Nathan Katz
Keyword(s):  
Surface Chemistry ◽  
Accelerated Aging ◽  
Oxide Glass ◽  
Cement Composites ◽  
Reinforced Composites ◽  
Glass Fiber Reinforced ◽  
Oxynitride Glass ◽  
Reinforced Cement ◽  
The Difference ◽  
Glass Reinforced Composites

AbstractGlass fiber reinforced composites made with an oxynitride analogue of alkali resistant glass were tested in tension after accelerated aging. The results were compared to composites made from oxide alkali resistant glass. The strength of the oxynitride glass reinforced composites was almost double that of the oxide glass based material. The results are related to the improved properties of oxynitride glass over oxide glass. In particular previous work has shown that surface chemistry of the oxynitride glass inhibits the formation of a strong bond between fiber and matrix. The difference in surface chemistry was examined by measuring the contact angle of aqueous solutions with respect to nitrogen content of the glass.

Effects of environmental conditions on the axial tension–compression fatigue behavior of carbon/epoxy plain-weave laminates containing flaws

2020 ◽  
Vol 54 (27) ◽  
pp. 4215-4230
Author(s):  
Marc-Claudel Deluy ◽  
Mohamed Khay ◽  
Anh Dung Ngo ◽  
Martine Dubé ◽  
Rajamohan Ganesan
Keyword(s):  
Fatigue Life ◽  
Environmental Conditions ◽  
Cyclic Load ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Real Life ◽  
Compressive Load ◽  
Fatigue Loading ◽  
Plain Weave ◽  
Strain Increase

The objective of this work is to investigate the effects of environmental conditions on the axial fatigue behavior of a carbon/epoxy plain-weave laminate with an embedded flaw subjected to a partially reversed cyclic load (stress ratio R = −0.1) in tension–compression. This specific material is more commonly used in aerospace engineering for the manufacturing of aircraft structural parts, which are directly exposed to various environmental conditions during service. Specific environmental and loading conditions that are appropriate to simulate real-life conditions are considered to observe and collect information about the material's behavior. For the investigation, dry and wet coupons were submitted to room temperature, 82 and 121 ℃ under loading frequencies of 7 and 15 Hz. A maximum allowable strain increase criterion is used to monitor the flaw growth threshold or delamination onset, during fatigue testing. The ultrasonic imaging (C-scan) technique is used to verify and confirm the delamination onset. Results show that the delamination onset strain increase criterion, along with fatigue life, generally decreased as the operating temperature and humidity were increased and that frequency had little effect on the delamination onset fatigue life. The S– N curves obtained from the tension–compression fatigue data were then compared to those of a previous work carried out in tension–tension fatigue loading. Results show a clear degradation in the delamination onset fatigue life of the coupons tested under tension–tension cyclic loading when the minimum tensile component of the cyclic load was replaced with a compressive load of the same magnitude.

Glass Reinforced Composites Based on (Epoxy-Furfural-Acetone) Resin Blends

2000 ◽  
Vol 46 (1-2) ◽  
pp. 293-300 ◽  
Author(s):  
L. M. Raj ◽  
M. M. Raj ◽  
H. S. Patel ◽  
T. B. Shah
Keyword(s):  
Reinforced Composites ◽  
Glass Reinforced Composites

Microstructure and Elastic Properties of Dental Resin and Resin-Based Glass-Reinforced Composites: XRD, SEM and Ultrasonic Methods

1987 ◽  
Vol 110 ◽  
Author(s):  
Surendra Singh ◽  
J. Lawrence Katz ◽  
J. Antonucci ◽  
R. W. Penn ◽  
J. A. Tesk
Keyword(s):  
Elastic Properties ◽  
High Stress ◽  
Reinforced Composites ◽  
Ultrasonic Velocities ◽  
Dental Resin ◽  
Transmission Method ◽  
Buoyant Force ◽  
Ultrasonic Methods ◽  
Young’S Moduli ◽  
Glass Reinforced Composites

AbstractThe load-bearing ability of dental restorative materials under cyclic high-stress applications depends upon mechanical properties established by the composition and microstructure. The microstructure and the elastic properties of neat resin and two resin-based glass-reinforced composites have been studied. The microstructure of these materials has been examined using x-ray diffractometry (XRD), scanning electron microscopy (SEM) including energy dispersive spectrometry (EDS). The elastic properties, i.e., Young's, shear and bulk moduli and Poisson's ratio were determined from ultrasonic velocities and densities. The ultrasonic velocities were measured using a pulse-through transmission method; density was measured using a buoyant force method. These studies showed that: (1) these materials have amorphous structures; (2) these materials have Young's moduli of the order of 20 GPa, and (3) the silane couplant apparently did not significantly affect the elastic properties of these resin-based composites.

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