發(fā)布時(shí)間：2018-03-29 07:28

  本文選題：濕熱老化　切入點(diǎn)：復(fù)合材料　出處：《航空材料學(xué)報(bào)》2017年05期

【摘要】：通過(guò)短梁法和雙切口法研究濕熱老化對(duì)T700/TDE-85復(fù)合材料層間剪切強(qiáng)度的影響,討論兩者吸濕規(guī)律隨老化時(shí)間的變化關(guān)系,并對(duì)試件斷口形貌進(jìn)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(shí)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(cè)層間剪切強(qiáng)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(qiáng)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(qiáng)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(shí)間的增長(zhǎng)變化比雙切口更為復(fù)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(xué)能源與動(dòng)力學(xué)院江蘇省航空動(dòng)力系統(tǒng)重點(diǎn)實(shí)驗(yàn)室;先進(jìn)航空發(fā)動(dòng)機(jī)協(xié)同創(chuàng)新中心;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51605218) 中國(guó)博士后科學(xué)基金(2015M571754) 中央高校基本科研業(yè)務(wù)費(fèi)專(zhuān)項(xiàng)資金(NS2016029)
【分類(lèi)號(hào)】：TB332

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