本文選題：濕熱老化　切入點：復合材料　出處：《航空材料學報》2017年05期

【摘要】：通過短梁法和雙切口法研究濕熱老化對T700/TDE-85復合材料層間剪切強度的影響,討論兩者吸濕規(guī)律隨老化時間的變化關(guān)系,并對試件斷口形貌進行分析。結(jié)果表明:兩種試件吸濕規(guī)律均符合Fick第二定律,但兩者平衡吸濕率和吸濕時間有所差別,雙切口法試件的吸濕速率和平衡吸濕率均比短梁法試件高;雙切口試件所測層間剪切強度受濕熱老化影響比短梁明顯,短梁試件每隔500 h層間剪切強度保持率為74.5%,61.0%,53.2%,50.6%,雙切口每隔500 h層間剪切強度保持率為60.9%,38.3%,42.6%,33.0%;短梁試件失效模式隨著濕熱老化時間的增長變化比雙切口更為復雜。
[Abstract]:The effect of wet-heat aging on interlaminar shear strength of T700/TDE-85 composites was studied by short beam method and double notch method. The relationship between the moisture absorption and aging time was discussed. The fracture morphology of the specimens was analyzed. The results showed that the moisture absorption law of the two specimens was in accordance with the second law of Fick, but the equilibrium moisture absorption rate and the moisture absorption time were different between the two kinds of specimens. The moisture absorption rate and equilibrium moisture absorption rate of double notch specimens are higher than those of short beam specimens, and the interlaminar shear strength measured by double notch specimens is more affected by hygrothermal aging than that of short beams. The shear strength retention rate between layers of short beam specimens is 74.51.0and 53.20.60.The shear strength retention rate is 60.938.3and 42.63.0.The failure mode of short beam specimens is more complicated than that of double incisions with the increase of hygrothermal aging time, and the retention rate of shear strength is 60.938.3and 42.60.The failure mode of short beam specimens is more complicated than that of double incisions with the increase of hygrothermal aging time.
【作者單位】： 南京航空航天大學能源與動力學院江蘇省航空動力系統(tǒng)重點實驗室;先進航空發(fā)動機協(xié)同創(chuàng)新中心;
【基金】：國家自然科學基金資助項目(51605218) 中國博士后科學基金(2015M571754) 中央高�；究蒲袠I(yè)務費專項資金(NS2016029)
【分類號】：TB332

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本文編號：1680118