Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan)

This study deals with the braided composite cylinder and its mechanical properties. The braided composites are fabricated from glass fiber under various braiding angle and epoxy resin.
The lateral compressive tests are carried out in order to specify the mechanical properties of braided composites. The theoretical prediction of the braided composite cylinders is performed by using the curved beam theorem. The following results are obtained.
1) The braided construction can be fabricated by using the braiding machine with simple mechanism.
2) The braiding angle has considerable effects on the flexibility of the cylinders under lateral compressive load.
3) The theoretical prediction using the curved beam theory is in agreement with the experimental result.

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Hole pressure error, Pe, in the Poiseulle flow of viscoelastic fluids between two parallel plates was calculated numerically by means of Marker-and-Cell (MAC) method which is easy to develop into the calculations in a three-dimensional flow. The constitutive model used is the Rivlin-Ericksen second-order fluid model with variable coefficients.
First, the calculations in a two-dimensional flow were carried out in order to clarify effects of geometric dimensions and shear-thinning viscosity on Pe. Pe is found to be dependent on the geometry, i.e., the width and depth of the slot and the channel height, and the shear-thinning viscosity. Next, the calculation in a three-dimensional flow across square holes was attempted in order to consider effect of the second normal stress difference. It is shown that the value of Pe increases consistently with increasing-N2/Ni, where NI and N2 are the first and second normal stress differences.

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