Определение параметров формования отверстий в неотвержденном тканом композите методом прокалывания заостренным индентором

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Определение параметров формования отверстий в неотвержденном тканом…
Инженерный журнал: наука и инновации # 9·2017 13
Defining parameters of apertures moulding in the uncured
woven composite using the technique of puncturing
with the pointed indentor
© M.A. Komkov, Yu.Z. Bolotin, T.V. Vasilyeva
Bauman Moscow State Technical University, Moscow, 105005, Russia
We introduce experimental research of the alternative approach to obtaining cylindrical
holes in the uncured woven composite, i.e. the puncturing technique. Apertures moulding
in the woven prepreg was performed with the pointed metal core (indentor). The article
provides numeric values for the duration and feed rate of the indentor in the multilayered
woven bags depending on the diameter of the tool, the thickness of the specimen and the
viscosity of the bonding material. We have developed a mathematical model and a proce-
dure for calculating the strain-stress state of the shoot and the basis of the fiberglass
cloth Т-13 in the area of indentor. It has been established that for the test specimens of
the given thickness the maximum values of the obtained holes fall within the limits corre-
sponding to the area of practical diameters dimensions of the rivets, screws and bolts
used in the assembly joints of the rocket and space equipment.
Keywords: fiberglass cloth, woven prepreg, apertures moulding, puncturing technique,
indentor
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