A Comparison of the Elevated Temperature Strength Loss in High Tensile Strength Graphite/Epoxy Composite Laminates Due to Ambient and Accelerated Aging

1975 ◽  
Vol 3 (6) ◽  
pp. 423 ◽  
Author(s):  
RL Meltzer ◽  
YR Fiorini ◽  
RT Horstman ◽  
IC Moore ◽  
AL Batik ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Elevated Temperature ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Accelerated Aging ◽  
Strength Loss ◽  
High Tensile Strength ◽  
Elevated Temperature Strength

scholarly journals Investigation of Atmospheric Moisture during Heat Treatment of Glass Fibres

Fibers ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 27 ◽  
Author(s):  
Peter Jenkins ◽  
Liu Yang ◽  
James Thomason
Keyword(s):  
Heat Treatment ◽  
Tensile Strength ◽  
Elevated Temperature ◽  
Glass Fibre ◽  
Room Temperature ◽  
Strength Loss ◽  
Fibre Strength ◽  
Atmospheric Moisture ◽  
Glass Fibres ◽  
Alternative Theories

The tensile strength of single water-sized E-glass fibres that were thermally conditioned, either in air or under vacuum, was investigated. The vacuum removed water from the conditioning atmosphere, as well as the fibre surfaces, at room temperature but retained tensile strength of fibres treated in the absence of water were not significantly different from those thermally conditioned in a standard air furnace. The results suggest that water, either in the treatment atmosphere or on the surface of the fibres, is not a significant factor in fundamental glass fibre strength loss at an elevated temperature. It may, therefore, be necessary to consider alternative theories to explain this strength loss.

Microstructure and Mechanical Properties of Extruded Mg-Zn-Nd-Y-Zr-Ca Alloy

2005 ◽  
Vol 488-489 ◽  
pp. 385-388
Author(s):  
Qiang Li ◽  
Qu Dong Wang ◽  
Xiao Qing Zeng ◽  
Wen Jiang Ding ◽  
Quanbo Tang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Elevated Temperature ◽  
Room Temperature ◽  
Cast Alloy ◽  
Casting Process ◽  
Elevated Temperature Strength ◽  
The Matrix ◽  
Zr Alloys

Nd, Y and Ca containing Mg-Zn-Zr alloys are produced by electromagnetic direct-chilling casting process, and extruded at a temperature of 643K with two extrusion ratios of 38:1 and 22:1, respectively. The grain size is markedly reduced from 80µm in as-cast alloy to 2~5µm in as-extruded alloy due to dynamic recrystallization, and lamellar eutectics at grain boundaries in as-cast alloy are broken up and fine precipitates in the matrix come forth during hot extrusions. Mechanical properties of the alloys are measured by tensile test from room temperature to 523K. Nd, Y and Ca are favorable to the strength of the hot-extruded alloy, especially the elevated-temperature strength, which is above 200MPa in ultimate tensile strength at 523K.

scholarly journals Mechanical Properties and Tensile Fatigue of Graphene Nanoplatelets Reinforced Polymer Nanocomposites

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Ming-Yuan Shen ◽  
Tung-Yu Chang ◽  
Tsung-Han Hsieh ◽  
Yi-Luen Li ◽  
Chin-Lung Chiang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fatigue Life ◽  
Carbon Fiber ◽  
Ultimate Tensile Strength ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Fiber Composite ◽  
Graphene Nanoplatelets ◽  
Carbon Fiber Composite

Graphene nanoplatelets (GNPs) are novel nanofillers possessing attractive characteristics, including robust compatibility with most polymers, high absolute strength, and cost effectiveness. In this study, GNPs were used to reinforce epoxy composite and epoxy/carbon fiber composite laminates to enhance their mechanical properties. The mechanical properties of GNPs/epoxy nanocomposite, such as ultimate tensile strength and flexure properties, were investigated. The fatigue life of epoxy/carbon fiber composite laminate with GPs-added 0.25 wt% was increased over that of neat laminates at all levels of cyclic stress. Consequently, significant improvement in the mechanical properties of ultimate tensile strength, flexure, and fatigue life was attained for these epoxy resin composites and carbon fiber-reinforced epoxy composite laminates.

Measurement of Tensile Strength of Natural Rubber Vulcanizates at Elevated Temperature

1982 ◽  
Vol 55 (1) ◽  
pp. 66-75 ◽  
Author(s):  
C. L. M. Bell ◽  
D. Stinson ◽  
A. G. Thomas
Keyword(s):  
Tensile Strength ◽  
Elevated Temperature ◽  
Critical Temperature ◽  
Natural Rubber ◽  
Test Piece ◽  
Flaw Size ◽  
High Tensile Strength ◽  
Test Pieces ◽  
Naturally Occurring ◽  
Natural Rubber Vulcanizates

Abstract The tensile strength of test pieces made from natural rubber vulcanizates drops abruptly at a critical temperature which can vary from 40 to 130°C. This variation in critical temperature is shown here to be a result of the variation in critical cut length with temperature. When the naturally occurring flaws in the test piece are smaller than the critical cut length, high tensile strength values occur, but when the flaws are longer than the critical cut length, low tensile strength values occur. The critical cut length decreases as the temperature increases, and the abrupt drop in tensile strength occurs as the critical cut length reaches the natural flaw size in the test piece. The natural flaw size in tensile test pieces depends on the sharpness of the cutter, and for tensile strength measurements at elevated temperature, it is shown that even a slightly blunt cutter may give markedly different results from a sharp one.

Evaluation of Tensile Strength of Woven Carbon/Epoxy Composite Laminates at Cryogenic Temperatures Using the Open Hole Specimens

2011 ◽  
Vol 39 (4) ◽  
pp. 103132 ◽  
Author(s):  
M. R. Mitchell ◽  
R. E. Link ◽  
Shinya Watanabe ◽  
Yasuhide Shindo ◽  
Tomo Takeda ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Cryogenic Temperatures ◽  
Open Hole

Effects of Interlaminal Contaminants on Mechanical Properties of Composite Laminates

2011 ◽  
Vol 320 ◽  
pp. 52-57
Author(s):  
Liang Luo ◽  
Dong Li Ma ◽  
Li Gong Zhan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Laminates ◽  
Water Contamination ◽  
Epoxy Composite ◽  
Curing Kinetics ◽  
Curing Temperature ◽  
Oil Contamination ◽  
Water Contaminant ◽  
Dsc Curves

In this paper, the influence of interlaminal contaminations of water, oil and paper on the mechanical properties of carbon fiber reinforced epoxy composite laminates was researched. The results showed that the existence of interlaminal layered contaminations greatly degraded the mechanical properties of composite laminates. The deterioration of mechanical properties resulted from oil contamination was most serious. It was concluded that the ultimate tensile strength (UTS), compression strength and ILSS were more seriously influenced than corresponding modules. How those contaminations affected the mechanical properties was discussed. For further understanding of the effecting mechanism of water contamination on the curing kinetics, the DSC curves of prepregs contaminated by water were compared with that of normal prepregs. It was found that the initial curing temperature of specimens with water contaminant was lower than that of control prepregs.

Tensile strength of notched woven fabric hybrid glass, carbon/epoxy composite laminates

2012 ◽  
Vol 43 (3) ◽  
pp. 383-395 ◽  
Author(s):  
Haleh Allameh Haery ◽  
Rizal Zahari ◽  
Wahyu Kuntjoro ◽  
Yakub Md Taib
Keyword(s):  
Tensile Strength ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Woven Fabric ◽  
Glass Carbon

The Static Mechanical Properties of Carbon/Epoxy Composite Laminates with Voids

2013 ◽  
Vol 652-654 ◽  
pp. 29-32
Author(s):  
A Ying Zhang ◽  
Dong Xing Zhang
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Empirical Models ◽  
Compressive Properties ◽  
Cfrp Laminates ◽  
Static Mechanical ◽  
Evolution Laws ◽  
Static Mechanical Properties

The effects of voids on the tensile and compressive properties of CFRP laminates were discussed in this paper. The tensile and compressive strength of specimens decreased with the porosity increasing from 0.33% to 1.50%. The empirical models of the tensile strength and the compressive strength of CFRP laminates with different porosities are established by using ORIGIN software. The evolution laws of the tensile strength and the compressive strength with different porosities were corresponding to the form of exponential function.

Sign in / Sign up

Export Citation Format

Share Document