【摘要】：隨著科學(xué)技術(shù)的發(fā)展,紡織結(jié)構(gòu)復(fù)合材料的性能研究不斷深入、復(fù)合材料成型技術(shù)不斷提高,紡織結(jié)構(gòu)復(fù)合材料的性能不斷完善其應(yīng)用的領(lǐng)域得到不斷的拓展,目前紡織結(jié)構(gòu)復(fù)合材料被廣泛應(yīng)用于航空、航天、交通運(yùn)輸、建筑、等許多領(lǐng)域。本文旨在通過實(shí)驗(yàn)探討所設(shè)計(jì)的紡織結(jié)構(gòu)復(fù)合材料的隔聲和力學(xué)性能。本文以玻璃纖維為原料,設(shè)計(jì)了多種復(fù)合材料預(yù)成型件的組織結(jié)構(gòu),經(jīng)半自動SGA598小樣織機(jī)設(shè)備織造織物,利用真空輔助樹脂成型加工工藝將其制備成復(fù)合材料,結(jié)合縫合技術(shù),利用現(xiàn)有儀器探討復(fù)合材料的隔聲和力學(xué)性能,研究內(nèi)容分四個部分:一、在250hz至6300hz頻率范圍內(nèi)的同一頻率下,借助纖維體積分?jǐn)?shù)來探討斜紋、加強(qiáng)斜紋、平紋和緯二重復(fù)合材料的傳遞損失,結(jié)果表明:從纖維體積分?jǐn)?shù)的角度來看,斜紋、加強(qiáng)斜紋、平紋和緯二重復(fù)合材料的隔音性能也呈依次遞減趨勢。換而言之,體積分?jǐn)?shù)越大,傳遞損失越大,隔聲性能越好。因此,可以從復(fù)合材料的體積分?jǐn)?shù)著手,來提高其隔聲性能。二、測試縫合后的角聯(lián)鎖復(fù)合材料的隔聲性能并對其分析,結(jié)果表明:無論是對于織物還是復(fù)合材料而言,豎縫的效果均好于橫縫,但對于無縫合的來說,縫合技術(shù)對角聯(lián)鎖復(fù)合材料隔聲性能的影響沒有達(dá)到預(yù)期的研究效果與價值。即在所研究的頻率范圍內(nèi),縫合技術(shù)并沒有改善角聯(lián)鎖復(fù)合材料的隔聲性能。三、采用縫合技術(shù)探討研究其對平紋、斜紋復(fù)合材料的力學(xué)性能的影響,實(shí)踐證明:縫合技術(shù)使平紋、斜紋復(fù)合材料的力學(xué)性能得到改善。整體而言,不縫、橫縫、豎縫復(fù)合材料力學(xué)性能呈現(xiàn)依次遞增趨勢。但就縫合方式來看,豎縫的效果要好于橫縫,然而從最大位移來看,縫合后的數(shù)值均小于不縫的數(shù)值,但相差不大,表明縫合消弱了其彈性和韌性,但削減力度非常小。四、探討了縫合技術(shù)對四層角聯(lián)鎖復(fù)合材料力學(xué)性能的影響,實(shí)驗(yàn)結(jié)果表明:橫縫、豎縫、不縫的彎曲性能呈現(xiàn)依次遞增的趨勢,這說明縫合使復(fù)合材料彎曲性能下降,這是由于縫合破壞了部分角聯(lián)鎖組織,導(dǎo)致縫合處出現(xiàn)纖維局部劈裂、孔洞現(xiàn)象。從數(shù)據(jù)來看,雖然整體上縫合后的復(fù)合材料彎曲性能稍低于無縫的,但是其韌性卻得到了提高和改善。
[Abstract]:With the development of science and technology, the research on the properties of textile structural composites is deepening, the molding technology of textile structure composites is improving, and the application field of textile structural composites is constantly expanded. at present, textile structural composites are widely used in many fields, such as aviation, aerospace, transportation, architecture and so on. The purpose of this paper is to investigate the sound insulation and mechanical properties of the designed textile structure composites through experiments. In this paper, the microstructure of various composite preforms was designed with glass fiber as raw material. The fabric was woven by semi-automatic SGA598 sample looms and made into composite materials by vacuum assisted resin molding technology. combined with stitching technology, the sound insulation and mechanical properties of composites were discussed by using the existing instruments. The research contents are divided into four parts: first, at the same frequency in the frequency range from 250hz to 6300hz, The transfer loss of twill, reinforced twill, plain grain and weft double composites is discussed with the help of fiber volume fraction. The results show that the sound insulation properties of twill, reinforced twill, plain grain and weft double composites also decrease in turn from the point of view of fiber volume fraction. In other words, the larger the volume fraction, the greater the transmission loss, and the better the sound insulation performance. Therefore, the volume fraction of the composite can be used to improve its sound insulation performance. Second, the sound insulation properties of the stitched angular interlocking composites are tested and analyzed. The results show that the effect of vertical seams is better than that of transverse seams for both fabrics and composites, but for those without stitches, the effect of stitching technology on the sound insulation properties of angular interlocking composites has not achieved the expected research effect and value. That is to say, in the frequency range studied, the stitching technology does not improve the sound insulation properties of angular interlocking composites. Thirdly, the effect of suture technology on the mechanical properties of plain and twill composites is studied. The practice proves that the stitching technology improves the mechanical properties of plain and twill composites. On the whole, the mechanical properties of non-slit, transverse joint and vertical seam composites increased in turn. However, as far as the suture mode is concerned, the effect of vertical seam is better than that of transverse seam. However, from the point of view of maximum displacement, the value after suture is smaller than that without seam, but the difference is not great, which indicates that the suture weakens its elasticity and toughness, but the reduction intensity is very small. 4. The effect of suture technology on the mechanical properties of four-layer angular interlocking composites is discussed. the experimental results show that the bending properties of transverse seam, vertical joint and non-seam increase in turn, which indicates that the bending properties of the composite are decreased by stitching, which is due to the partial angular interlocking structure destroyed by suture, which leads to the local split of fiber and the phenomenon of holes in the joint. From the data, although the bending properties of the stitched composites as a whole are slightly lower than those of seamless composites, the toughness of the composites has been improved and improved.
【學(xué)位授予單位】：中原工學(xué)院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB332

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