scholarly journals Experimental study of steered fibre composite production

2017 ◽  
Vol 66 (3) ◽  
pp. 295 ◽  
Author(s):  
A Haavajõe ◽  
M Mikola ◽  
H Osali ◽  
M Pohlak ◽  
H Herranen
2010 ◽  
Vol 19 (4) ◽  
pp. 096369351001900 ◽  
Author(s):  
K. O. Low ◽  
J. L. Lim ◽  
K. J. Wong

Bamboo fibre has been used as reinforcement in epoxy. The influence of bamboo fibres orientation on the scratch characteristics has been studied by single pass scratching action and evaluated in terms of scratch force and scratch hardness. The composites are prepared for three different fibre orientations, longitudinal, transverse and 10 mm random. Five values of applied load (2 N, 5 N, 10 N, 12 N, 15 N) and two scratching speeds (5.6 mm s−1, 11.2 mm s−1) are considered. The results revealed that the introduction of bamboo fibres tends to increase the scratch force for all composites considered except for longitudinal orientated fibre composite. The scratch hardness shows improvement when bamboo fibre is introduced, except for the longitudinal case. The best result for scratch hardness is exhibited by transversely orientated bamboo fibre reinforced epoxy corresponding to 35 % improvement.


1999 ◽  
Vol 8 (5) ◽  
pp. 096369359900800
Author(s):  
Gerard M. Van Erp

This paper presents preliminary findings of an experimental study into the structural behaviour of a new composite beam designed specifically for the civil engineering market. The Filled Resin Core (FRC) beam eliminates most problems associated with standard pultruded beams and is capable of carrying very high loads at a cost similar to steel and concrete beams. Principles of the new design are discussed and test results for three different types of beams are presented.


Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.


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