本文選題：多相流 + 風(fēng)機(jī)葉片�。� 參考：《新疆大學(xué)》2015年碩士論文

【摘要】：新疆的風(fēng)能資源非常豐富,但是環(huán)境較惡劣,沙塵天氣較多,風(fēng)沙運(yùn)動(dòng)會(huì)對(duì)各種物體造成強(qiáng)烈的風(fēng)蝕作用。風(fēng)電機(jī)組會(huì)受到風(fēng)蝕作用,尤其是復(fù)合材料風(fēng)機(jī)葉片,長(zhǎng)期的風(fēng)蝕必將造成材料失效報(bào)廢。在風(fēng)機(jī)運(yùn)行過程中,葉片不但要承受復(fù)雜的載荷,而且要抵擋風(fēng)沙的沖刷。針對(duì)新疆的特殊情況,本課題主要研究風(fēng)機(jī)葉片復(fù)合材料的風(fēng)沙沖蝕磨損行為及其力學(xué)性能,為葉片復(fù)合材料保護(hù)提供一定的參考。本論文首先介紹了國內(nèi)外風(fēng)電產(chǎn)業(yè)的發(fā)展概況,以及多相流沖刷磨損的定義及其影響因素。接著介紹了玻璃纖維增強(qiáng)樹脂基復(fù)合材料的制備過程。其次,根據(jù)力學(xué)性能實(shí)驗(yàn)標(biāo)準(zhǔn),采用巴氏硬度計(jì)測(cè)試了玻璃纖維增強(qiáng)樹脂基復(fù)合材料表面的巴氏硬度,采用電子萬能試驗(yàn)機(jī)分別對(duì)試樣進(jìn)行了壓縮及彎曲力學(xué)性能測(cè)試,獲得了巴氏硬度值、壓縮強(qiáng)度及模量、彎曲強(qiáng)度及模量。然后,根據(jù)三因素三水平的正交試驗(yàn)方法,選取氣流速度、沙粒粒徑和沖擊角度作為主要考核指標(biāo),用多相流沖蝕試驗(yàn)機(jī)分別對(duì)兩組復(fù)合材料試樣進(jìn)行氣固兩相流、氣固液三相流的沖刷磨損試驗(yàn)。沖刷試驗(yàn)過程中,需稱量試樣磨損前后的質(zhì)量,計(jì)算磨損失重量。最后,使用PGI非球面測(cè)量?jī)x對(duì)沖刷試樣的沖蝕坑進(jìn)行線掃描,獲得了沖蝕坑掃描曲線,定性分析了各試樣的沖蝕程度;使用場(chǎng)發(fā)射掃描電鏡觀察復(fù)合材料表面沖刷磨損形貌,分析了材料的沖刷磨損機(jī)理。
[Abstract]:The wind energy resources in Xinjiang are very rich, but the environment is bad and the dust weather is more. The wind-sand sports meet causes strong wind erosion to various objects. Wind turbine will be affected by wind erosion, especially composite fan blades, the long-term wind erosion will lead to material failure and scrap. During the operation of the fan, the blade should not only bear complicated load, but also resist the erosion of wind sand. In view of the special situation of Xinjiang, this subject mainly studies the wind sand erosion wear behavior and mechanical properties of fan blade composite material, and provides a certain reference for the protection of blade composite material. In this paper, the development of wind power industry at home and abroad, the definition of multiphase flow scour wear and its influencing factors are introduced. Then the preparation process of glass fiber reinforced resin matrix composites was introduced. Secondly, according to the experimental standard of mechanical properties, the pasteurized hardness of glass fiber reinforced resin matrix composites was tested by using pasteurian hardness meter, and the compression and bending mechanical properties of the samples were tested by electronic universal testing machine. The values of Pasteur hardness, compression strength and modulus, bending strength and modulus were obtained. Then, according to the orthogonal test method of three factors and three levels, the airflow velocity, sand particle size and impact angle were selected as the main assessment indexes, and the gas-solid two-phase flow was carried out on the two groups of composite materials by multi-phase flow erosion testing machine. Erosion wear test of gas-solid-liquid three-phase flow. In the process of scouring test, the weight of wear loss should be calculated by weighing the quality of the sample before and after wear. Finally, the scour pits of the scour samples were scanned by PGI aspheric measuring instrument, and the scanning curves of the scour pits were obtained, the erosion degree of the samples was analyzed qualitatively, and the erosion and wear morphology of the composite surface was observed by field emission scanning electron microscope. The erosion wear mechanism of the materials was analyzed.
【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB33

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本文編號(hào)：1861129