Room Temperature Curing Resin Systems for Graphite/Epoxy Composite Repair.

1979 ◽  
Author(s):  
D. J. Crabtree
Keyword(s):  
Room Temperature ◽  
Epoxy Composite ◽  
Composite Repair

Bonded boron-epoxy composite repair and reinforcement of cracked aluminium structures

1996 ◽  
Vol 34 (3) ◽  
pp. 339-347 ◽  
Author(s):  
T.E. Tay ◽  
F.S. Chau ◽  
C.J. Er
Keyword(s):  
Epoxy Composite ◽  
Composite Repair

FRICTIONAL PROPERTIES OF PALM KERNEL ACTIVATED CARBON-EPOXY COMPOSITE UNDER VARIOUS NORMAL LOADS

2015 ◽  
Vol 76 (10) ◽  
Author(s):  
Khai Wei Chua ◽  
Mohd Fadzli Bin Abdollah ◽  
Noor Ayuma Mat Tahir ◽  
Hilmi Amiruddin
Keyword(s):  
Activated Carbon ◽  
Room Temperature ◽  
Epoxy Composite ◽  
Normal Load ◽  
Palm Kernel ◽  
Molding Method ◽  
Frictional Properties ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Sliding Test

This study investigates the effect of normal load on the frictional properties of palm kernel activated carbon-epoxy (PKAC-E) composite. The PKAC-E composite specimen was fabricated by hot compression molding method. The dry sliding test was performed by using a pin-on-disc tribometer at various normal loads, range from 5 – 100N. The sliding speed and distance were constant. All tests were performed at room temperature. It was found that the coefficient of friction decreases with normal load, though at 60N, friction coefficient increases slightly and remains almost invariant at about 0.04 with normal load. The main conclusion of this study is that PKAC-E composite has a potential for tribological material application but only limited at low normal load under unlubricated conditions.

Disbond effects on bonded boron/epoxy composite repair to aluminium plates

2008 ◽  
Vol 42 (2) ◽  
pp. 220-227 ◽  
Author(s):  
B. Bachir Bouiadjra ◽  
D. Ouinas ◽  
B. Serier ◽  
N. Benderdouche
Keyword(s):  
Epoxy Composite ◽  
Composite Repair

Experimental Investigations on the Effects of Thermal Residual Stresses on the Efficiency of Repaired Panels with Glass/Epoxy Composite Patch

2008 ◽  
Vol 385-387 ◽  
pp. 141-144 ◽  
Author(s):  
Hossein Hosseini-Toudeshky ◽  
M. Shamboli ◽  
Bijan Mohammadi
Keyword(s):  
Crack Growth ◽  
Room Temperature ◽  
Epoxy Composite ◽  
Initial Crack ◽  
Experimental Investigations ◽  
Thermal Residual Stresses ◽  
R Ratio ◽  
Single Side ◽  
Front Shape ◽  
Remote Stress

The aim of this experimental investigation is to study the effect of various curing temperatures on crack-front shape and crack growth life of centrally cracked aluminium panels in mode-I condition with single-side glass/epoxy composite patches. The aluminium panels are made of Al 2024-T3 with the thicknesses of 2.29 mm. Unidirectional four layers lay-up perpendicular to the initial crack length were used for the patches of all specimens and the adhesive was Araldite LY564. The cyclic remote stress of 118 MPa with the R-ratio of 0.05 was applied for all models. The experiments were performed for different curing temperatures of room temperature, 50oC, 80oC, 100oC and 120oC. It is shown that the fatigue crack growth life of the repaired panels with curing temperatures of 100oC and 120oC is considerably smaller than those obtained for specimens cured at room temperature and 50oC.

scholarly journals The influence of high and low temperatures on the impact properties of glass-epoxy composites

2007 ◽  
Vol 72 (7) ◽  
pp. 713-722 ◽  
Author(s):  
Slavisa Putic ◽  
Marina Stamenovic ◽  
Branislav Bajceta ◽  
Predrag Stajcic ◽  
Srdjan Bosnjak
Keyword(s):  
Low Temperatures ◽  
Composite Structures ◽  
Room Temperature ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Temperature Influence ◽  
Impact Properties ◽  
Different Temperatures ◽  
High And Low Temperatures ◽  
The Impact

The aim of this paper is to present the influence of high and low temperatures on the impact properties glass-epoxy composites. The impact strength an is presented for four different glass-epoxy composite structures at three different temperatures, i.e., at room temperature t=20?C, at an elevated temperature t=+50?C and at a low temperature t=-50?C. Standard mechanical testing was carried out on the composite materials with specific masses of reinforcement of 210 g m-2 and 550 g m-2 and orientations 0?/90? and ?45?. Micromechanical analysis of the failure was performed in order to determine real models and mechanisms of crack and temperature influence on the impact properties. .

Study of Adherend Thickness Influence on the Bond Strength of Carbon/Epoxy Composite Joints

2013 ◽  
Vol 785-786 ◽  
pp. 323-327 ◽  
Author(s):  
Li Hong Liu ◽  
Jian Guang Zhang ◽  
Yong Hai Wen
Keyword(s):  
Elevated Temperature ◽  
Bond Strength ◽  
Room Temperature ◽  
Epoxy Composite ◽  
Adhesive System ◽  
Epoxy Composites ◽  
Aging Condition ◽  
Adhesive Film ◽  
Lap Shear ◽  
Different Thickness

In this paper, adherend thickness influence on the bond strength was evaluated by single-lap shear testing. The adherend for joining was carbon/epoxy composites with four different thickness made of fabric prepregs. The adhesive system for joining included two types of adhesive film, namely J-135 and J-95. The results showed that adherend thickness have a significant influence on the bond strength. In the range of adherend thicness from 2.26 mm to 4.52 mm, the bond strength demonstrated a wavy change with increasing adherend thickness. Through comparison of the bond strength of joints with two adhesives at room temperature and aging condition, adhesive J-95 was proved to have better resistance to elevated temperature and humidity than J-135.

scholarly journals Microstructural characterization of glass-epoxy composites subjected to tensile testing

2013 ◽  
pp. 151-162 ◽  
Author(s):  
Jelena Petrovic ◽  
Dragoljub Bekric ◽  
Ivica Vujicic ◽  
Ivana Dimic ◽  
Slavisa Putic
Keyword(s):  
Tensile Testing ◽  
Room Temperature ◽  
Epoxy Composite ◽  
Microstructural Characterization ◽  
Mechanical Analysis ◽  
Destruction Process ◽  
Tension Properties ◽  
Statistical Mechanical ◽  
Electronic Microscope

The main objective of the research presented in this paper was to carry out a statistical-mechanical analysis concerning the tensile test of glass-epoxy composite materials in order to calculate their relevant tension properties and micromechanical structure destruction process. The analysis was done at room temperature, and its results were derived based on the structure of the glass woven 280 g/m?, ?twill texture? with the width value of 100 cm, type - Interglass 92125, and epoxy resin type MGS L 135. Samples were shaped by hands with 35% of fabric volume part. The consumed portion of resin was 220 g/m?, the thickness of the laminate was 0.308 mm, and the mass of the laminate was 500 g/m2. There were a total of eight layers built in the panel. The micromechanical analysis was derived from the crack surfaces data collected on a scanning electronic microscope, and it showed the mechanisms of damage, and development of cracks until the occurrence of the final break under the tension load.

scholarly journals Low-temperature tension properties of glass-epoxy composite materials

2005 ◽  
pp. 123-134
Author(s):  
Slavisa Putic ◽  
Marina Stamenovic ◽  
Branislav Bajceta ◽  
Predrag Stajcic ◽  
Srdjan Bosnjak
Keyword(s):  
Tensile Strength ◽  
Composite Material ◽  
Composite Materials ◽  
Room Temperature ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Tension Properties ◽  
Different Temperatures ◽  
Stereo Microscope

The aim of this paper was to present the determination of tensile strength Rm and modulus of elasticity Et of glass-epoxy composites at two different temperatures (at room temperature t=20?C, and at t =?50?C). Standard mechanical testing was carried out on glass woven-epoxy composite material with different structures (two specific weights of reinforcement, 210 g/m2 and 550 g/m2) and orientations (0?/90? and ?45?). Micromechanical analysis of failure was performed on a stereo microscope and SEM in order to determine real models and mechanisms of crack.

Flame-retardant corrugated paper/epoxy composite materials

2019 ◽  
Vol 33 (14n15) ◽  
pp. 1940004
Author(s):  
Jieng-Chiang Chen ◽  
Bo-Yan Huang
Keyword(s):  
Composite Materials ◽  
Water Absorption ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Room Temperature ◽  
Epoxy Composite ◽  
Composite Panels ◽  
Sandwich Composites ◽  
Flame Retardant Properties ◽  
Corrugated Paper

The waterproof and flame-retardant properties of corrugated paper (CP) reinforced epoxy resin sandwich composites are discussed. Two composites, a CP-reinforced epoxy composite (CP/E composite) and a CP-reinforced flame-retardant epoxy composite (CP/FRE composite), were developed in this study. A dipping bath was developed for impregnating the paper with epoxy and a flame-retardant epoxy solution to make the CP/P and CP/FRE composite panels. A room-temperature-cured epoxy resin was blended with various contents (10%, 20%, and 30%) of phosphorus-based flame-retardant compounds and then was used as a matrix to make CP/FRE-10, CP/FRE-20, and CP/FRE-30 composite materials. Water absorption tests of these composites were used to estimate the waterproof properties. In addition, vertical and horizontal burning tests were used to evaluate the flame-retardant properties of the composites.

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