TESTING APPARATUS FOR TESTING AIR PERMEABILITY ON THICKNESS DIRECTION OF PLASTIC MATRIX, AND METHOD THEREFOR
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United States of America Patent
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Issued Date -
Jan 16, 2014
app pub date -
Dec 31, 2011
filing date -
Jan 27, 2011
priority date (Note) -
Abandoned
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Abstract
An apparatus for testing the air permeability in the thickness direction of a resin matrix composite material layer includes a mold having a cavity and a covering plate, a loading apparatus, a temperature controlling apparatus, a vacuuming apparatus, and a flow detecting element. An air inlet is connected to the flow detecting element, and an air outlet is connected to the vacuuming apparatus. The covering plate has a through-hole with upper and lower ventilation pieces. The loading apparatus addresses the upper ventilation piece. A test specimen is laid flat between the ventilation pieces. Employment of the present invention allows for accurate testing of air permeability of pre-impregnated material in the thickness direction of the resin matrix composite material layer under different pressure and temperature conditions.
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