Compressive Strength of Boron-Epoxy Composites

1969 ◽  
Vol 3 (1) ◽  
pp. 48-56 ◽  
Author(s):  
John R. Lager ◽  
Reid R. June
2018 ◽  
Vol 913 ◽  
pp. 529-535
Author(s):  
Zhi Ming Yang ◽  
Jin Xu Liu ◽  
Xin Ya Feng ◽  
Shu Kui Li ◽  
Xin Lei Wang ◽  
...  

In order to improve the mechanical properties of basalt fiber/epoxy composites, carboxylic CNTs were filled into the epoxy matrix of basalt fiber/epoxy composites. Firstly, the carboxylic CNTs filled epoxy composites with different carboxylic CNTs content were studied. Quasi-static and dynamic compression results show that when the content of carboxylic CNTs increased from 0wt% to 1wt%, both ultimate quasi-static and dynamic compressive strength of CNTs filled epoxy composites showed increasing tendencies. However when the content of carboxylic CNTs increased from 1 wt% to 1.5 wt% both ultimate quasi-static and dynamic compressive had decreasing tendencies. Base on above results, carboxylic CNTs (1wt%) filled basalt fiber/epoxy composites were fabricated by mould pressing method. Quasi-static and dynamic compression results showed that both ultimate quasi-static and ultimate dynamic compressive strength of carboxylic CNTs filled basalt fiber/epoxy composite were enhanced compared with those of basalt fiber/epoxy composites without CNTs. However, the critical failure strain were all lower than those of basalt fiber/epoxy composites without CNTs. Failure mechanism analysis showed that the carboxylic CNTs was beneficial for forming good interfacial bonding between epoxy matrix and basalt fibers, and the advantage of high axial tensile strength of basalt fibers could be fully utilized, which is responsible for the enhanced ultimate compressive strength of carboxylic CNTs filled basalt fiber/epoxy composites.


Composites ◽  
1975 ◽  
Vol 6 (5) ◽  
pp. 217-225 ◽  
Author(s):  
S.V. Kulkarni ◽  
J.S. Rice ◽  
B.W. Rosen

2005 ◽  
Vol 297-300 ◽  
pp. 2909-2914
Author(s):  
J.C. Liu ◽  
Tie Jun Wang ◽  
W. Zhang

Effect of resin content on the mechanical properties of satin carbon fabric/epoxy composites is studied in this paper. Mechanical properties of the satin carbon fabric/epoxy composites are experimentally measured. The compressive strength and conversion ratio of strength of carbon fiber in the fabric composites are measured and compared with the experimental data of composite laminates reinforced by unidirectional fiber tape.


2016 ◽  
Vol 842 ◽  
pp. 31-35
Author(s):  
Bambang K. Hadi ◽  
Rahmah S. Trisolicha

Reliable experimental data on compressive strength of composite material are important, especially for designing structures having dominant compressive stresses, such as bolted joints. Composite materials usually have lower compressive strengths compared to tensile strengths. Woven composites added more complications. Initial waviness in woven composites makes the compressive strengths even much lower. Therefore, in this paper, experimental study on the compressive strengths of woven composites will be presented. The experiments used standard ASTM D3410M-03. Woven glass-epoxy will be tested extensively. The specimens were produced using standard hand layup techniques. Several layup configurations were tested, namely (0/90)s, (0/90/±45)s and (±45)s. The results showed that woven glass-epoxy generated failure modes specifically found in compressive tests of composites, such as: fiber micro-buckling, fiber crushing and shear band-formation. It was also found that unlike in the case of tensile tests, the layup configurations did not affect the compressive strength values. It seems that the fiber orientation will not affect significantly the compressive strengths. The epoxy matrix played more dominant role on the compressive behavior of woven glass-epoxy composites.


2021 ◽  
Vol 87 (8) ◽  
pp. 34-41
Author(s):  
D. L. Starokadomsky ◽  
M. N. Reshetnyk

The goal of the study is to compare the properties of epoxy composites with initial and water-treated (hydrated) water-hardening binders (gypsum and cement). The effect of 50% filling of ED20 epoxy resin with initial and water-treated binders (cement and gypsum) on the strength of composites, their structure and physicomechanical properties is considered. An increase in such indicators as the elastic modulus value, fire- and heat resistance, as well as the resistance to organic solvents was observed. Optical and SEM microscopy revealed a difference in their structure compared to the original composites. However, there was no noticeable effect on the strength characteristics of conventional heat treatment (50 – 60°C). After heating at 250°C, the effect of thermal hardening (and thermoplasticization) was observed for filled composites: a significant increase in the compressive strength (and plasticity), microhardness, and abrasion resistance, compared to an unfilled polymer. The results obtained can be used to develop polyepoxide materials with new properties necessary for solving important production applications.


2019 ◽  
Vol 130 ◽  
pp. 25-33 ◽  
Author(s):  
Christophe Baley ◽  
Camille Goudenhooft ◽  
Patrick Perré ◽  
Pin Lu ◽  
Floran Pierre ◽  
...  

1971 ◽  
Vol 5 (3) ◽  
pp. 362-377 ◽  
Author(s):  
R.L. S ◽  
G.E. Nevill ◽  
C.A. Ross ◽  
E.R. Jones

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