PUR sandwich FRP Pie muti-temperature panels for van . Sep 06, 2021 · 2010/3/1 · The static flexural test of composite sandwich beams was performed in accordance with the ASTM C393-00 standard .For specimen 4FSW-I, the load was applied at the third and at the two-third points of the span (Fig. 1a) while the load was applied at 0.4 and at 0.6