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  本文關(guān)鍵詞： 復合材料 孔隙率 超聲檢測 滌綸長絲 標準試塊　出處：《復合材料學報》2017年01期 　論文類型：期刊論文

【摘要】：采用50D中空滌綸長絲埋入復合材料,模擬復合材料的孔隙,制備孔隙率標準試塊。通過制備三種厚度(1.5,3.0和5.0mm)和五種孔隙率(0~5.76%)的碳纖維增強環(huán)氧樹脂復合材料,采用超聲C掃描測定不同孔隙率下復合材料的超聲衰減,并和波音公司的標準試塊進行了對比。研究了滌綸排列密度和在厚度方向上的排列位置對復合材料超聲衰減的影響。結(jié)果表明,制備的標準試塊和波音公司標準試塊具有良好的一致性,用滌綸中空纖維模擬復合材料的孔隙率是可行的;隨著滌綸排列密度的增加,孔隙率增加,超聲衰減增加;在孔隙率不變的情況下,滌綸分布在不同的厚度位置上時,其復合材料的超聲衰減基本一致。
[Abstract]:Carbon fiber reinforced epoxy resin composites were prepared by embedding 50 D hollow polyester filaments into composite materials, simulating the porosity of composites and preparing standard test blocks of porosity. Three kinds of carbon fiber reinforced epoxy composites with different thickness (1.5mm, 3.0 and 5.0 mm) and five kinds of porosity (0% or 5.76) were prepared. Ultrasonic C scan was used to measure the ultrasonic attenuation of composites with different porosity. The effects of the arrangement density and the arrangement position in the thickness direction on the ultrasonic attenuation of the composite were studied. It is feasible to simulate the porosity of the composites by using the polyester hollow fiber, and the porosity increases with the increase of the arrangement density of polyester fibers, and the ultrasonic attenuation increases with the increase of the density of polyester fibers. When the porosity is constant, the ultrasonic attenuation of the composite is basically the same when the polyester fiber is distributed in different thickness positions.
【作者單位】： 上海飛機制造有限公司;東華大學紡織學院;
【基金】：國家商用飛機制造工程技術(shù)研究中心創(chuàng)新基金(SAMC14-JS-15-048;SAMC14-JS-15-049)
【分類號】：TB332

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本文編號：1540720