|
Graphene-toughened carbon fibre composites to improve mechanical performances
11/13/2014 |
|
|
The School of Engineering at Cardiff University and Haydale demonstrate that plasma functionalisation technology produces improvements in mechanical performance and damage tolerance in carbon fibre composites.
These results, particularly the increased damage tolerance, could have implications for the development of future composite structures, demonstrating the potential in future aircraft design for weight saving and the consequent environmental benefits such as reductions in CO2 emissions.
The research was undertaken by the Cardiff School of Engineering with additional funding from the European Community's Seventh Framework programme under the Clean Sky Joint Technology Initiative. The Clean Sky Initiative is an European research programmes with the aim of accelerating technological advancements in aircraft design and green aviation technology. The project was based on requirements specified by the Centro Italiano Richerche Aerospaziale (CIRA) for developing new composite technologies for Green Regional Aircraft (GRA), and was managed by an integrated team from CIRA, Cardiff School of Engineering and Haydale.
The research investigated graphene nanoplatelet (GNP) and carbon nanotube (CNT) reinforcement technology. Compared to a resin, a macro reinforcement such as carbon fibre is immensely stiff and strong, and hence in a fibre-reinforced composite, the properties are dominated by the fibre. The addition of functionalised graphene to neat resin has been shown to result in a doubling in stiffness, but the effect of this in a macrocomposite would normally be expected to be much less. The results observed in this research show a 13% increase in compression strength and a 50% increase in compression after impact performance, indicating that fracture mode has been positively influenced. This is a significant result as damage resistance and compression properties are of paramount importance in high performance structures such as composite aircraft wings.
Effect of Haydale functionalised additions on mechanical performance of carbon fibre-epoxy composite
A resin infusion technique was employed to produce composites containing a small percentage of nano-materials, achieving maximum material improvements. This technique is used widely in aerospace and other high performance engineering industries for cost effective manufacture of high integrity materials. The nanomaterials were surface treated using Haydale's low temperature, low energy HDPlas plasma process, which promotes homogenous dispersion and chemical bonding and avoids the waste streams produced by traditional functionalisation processes.
The potential of graphene in developing a new generation of aerospace structures has taken a significant step forward as a result of the work carried out by Cardiff University. The research leading to these results has received funding from the European Community's Seventh Framework Programme for the Clean Sky Joint Technology Initiative. Haydale's surface functionalisation of graphene via its low temperature plasma process has been critical in achieving the considerable material improvements observed in this research. The HDPlas technique offers significant environmental benefits whilst exploiting the full potential of graphene in composites. |
|
|
|
|
|
主站蜘蛛池模板：
国产精品中文字幕日韩|
国产在线观看免费观看|
中国少妇人妻xxxxx|
老司机午夜福利视频|
国产成人香蕉久久久久|
性欧洲大肥性欧洲大肥女|
国内大量偷窥精品视频|
午夜福利电影在线观看|
国产又粗又猛又爽又黄|
在线a级毛片无码免费真人|
99这里有精品视频|
日韩av免费在线天堂|
国产av国片精品一区二区|
加勒比久久AV|
精品尤物TV福利院在线网站|
99热亚洲精品6码|
亚洲一区中文字幕在线|
国产精品熟妇视频国产偷人|
国产馆在线精品极品粉嫩|
亚洲精品香蕉一区二区|
激情综合色五月六月婷婷|
女教师系列久久精品|
国产成人精品三级在线影院|
国产男女无遮挡猛进猛出|
日本55丰满熟妇厨房伦|
激情综合色区网激情五月|
无码精品黑人|
无码高潮少妇毛多水多水|
亚洲AV成人网站在线观看|
久久六|
国产一区二区三区18禁|
久久亚洲精品人成综合网|
一道本AV免费不卡播放|
国产精品偷伦费观看一次|
夜夜狠狠躁日日躁成人网|
中文字幕第一页国产|
国产亚洲欧洲AⅤ综合一区|
天天做天天躁天天躁|
国产一区二区三区精品自拍|
91在线视频播放|
97超碰日韩|
