共查询到20条相似文献,搜索用时 171 毫秒
1.
为优化公路工程疲劳性能,使用SBS改性沥青、矿料、玄武岩纤维制备纤维增强复合材料,采用马歇尔试验方法分析不同配合比条件下玄武岩纤维增强复合材料的性能。马歇尔试验分析结果显示:矿料初始级配的初始油石比为6.0%,玄武岩纤维质量分数、SBS改性沥青质量分数分别为0.35%、4.55%时,玄武岩纤维增强复合材料的性能最优;将其制备为玄武岩纤维增强复合材料模板后用于公路路面养护,在多种应变工况中,公路路面疲劳寿命次数变多,劲度模量变大。由此证明,玄武岩纤维增强复合材料模板具备优化公路工程的抗疲劳性能,延长沥青路面应用寿命的能力。 相似文献
2.
3.
4.
5.
本文主要研究玄武岩增强聚丙烯复合材料的力学性能。分别制备了玄武岩纤维含量为10%、20%、30%和40%的纤维增强复合材料,并分析纤维含量对复合材料拉伸性能和弯曲性能的影响。研究表明,玄武岩纤维的加入大幅度提高了复合材料的拉伸性能和弯曲性能,但复合材料的断裂伸长率有所下降;随着玄武岩纤维含量的增加,复合材料的拉伸、弯曲强度和模量呈先增加后减小的趋势,当纤维含量在30%时达最大值;复合材料的弯曲强度和模量的变化规律与拉伸性能相同。 相似文献
6.
7.
8.
根据机织和针织复合材料各自的特点,以玄武岩纤维为材料,设计出一种新型的三维玄武岩纤维增强复合材料。对这种复合材料进行了拉伸、弯曲和重锤冲击测试,并对三种破坏机理进行了分析。 相似文献
9.
采用真空辅助成型工艺(VARI)制备连续玄武岩纤维增强木材复合材料,通过测试其力学性能,分析了平纹6×6、平纹9×9、斜纹6×6、斜纹9×9等四种不同类型玄武岩织物的增强效果,结果显示平纹6×6玄武岩纤维布增强木材复合材料的综合力学性能最优。 相似文献
10.
11.
纤维增强复合材料具有比刚度高、比强度大的轻量化优势,以及可设计性强、耐腐蚀性优、抗疲劳性好等显著特点,可作为武器装备轻量化设计的绝佳选材。在对迫击炮身管进行受力分析的基础上,提出了采用金属内衬外加碳纤维复合材料增强层的迫击炮复合身管双层结构,介绍了用于迫击炮复合身管加工的缠绕设备和缠绕工艺,基于实验结果,综合分析了碳纤维材料的选择、铺层顺序、纤维缠绕张力等工艺对迫击炮复合身管承压性能的影响,可为火炮复合材料身管以及复合材料承载圆筒的结构设计与加工提供参考。 相似文献
12.
复合材料板簧与传动轴的研制 总被引:1,自引:0,他引:1
介绍汽车用聚合物基复合材料板簧和传动轴的原材料、成型工艺及性能研究。研制的复合材料板簧的重量是多片钢板簧的1/5,而疲劳寿命远高于多式钢制板簧。研制的混杂复合材料传动轴经强度和疲劳试验证明是合理可行的。 相似文献
13.
George C. Jacob J. Michael Starbuck John F. Fellers Srdan Simunovic 《Polymer Composites》2005,26(3):293-305
Composite materials have the potential to reduce the overall cost and weight of automotive structures with the added benefit of being able to dissipate large amounts of impact energy by progressive crushing. To identify and quantify the energy‐absorbing mechanisms in candidate automotive composite materials, modified test methodologies were developed for conducting progressive crush tests on flat‐plate composite specimens. The test method development and experimental setup focused on isolating the damage modes associated with the frond formation that occurs in dynamic testing of composite tubes. The Automotive Composites Consortium (ACC) is interested in investigating the use of chopped carbon fiber–reinforced composites as crash‐energy absorbers primarily because the low costs involved in their manufacture make them cost‐effective for automotive applications. While many in the past have investigated the energy‐absorption characteristics in various continuous fiber–reinforced composite materials, no literature is available on the energy‐absorption and crushing characteristics of chopped carbon fiber–reinforced composite materials. Hence quasi‐static progressive crush tests were performed on composite plates manufactured from chopped carbon fiber (CCF) with an epoxy resin system using compression‐molding techniques, and the effect of material parameters (fiber volume fraction, fiber length, and fiber tow size) on energy absorption was evaluated by varying them during testing. Of the parameters evaluated, fiber length appeared to be the most critical material parameter determining the specific energy absorption of a composite material, with shorter fibers having a higher specific energy absorption than longer fibers, possibly because of the increased concentration of stress raisers in the shorter fiber specimens, resulting in a larger number of fracture‐initiation sites. The combination of material parameters that yielded the highest energy‐absorbing material was identified. The test observations and trends established from this work would help support the development of low‐cost energy absorbers for the automotive industry. POLYM. COMPOS. 26:293–305 2005. Published 2005 Society of Plastics Engineers. 相似文献
14.
15.
复合材料汽车板簧吊耳及其联接的研究 总被引:1,自引:1,他引:0
本文描述了玻璃纤维增强复合材料(GFRP)汽车板簧在紧急制动时的力学模型。给出了吊耳的联接强度设计安全系数。经过八十万次台架疲劳试验和拉伸破坏试验证实,平面镶嵌铆接式吊耳结构能满足一吨以下轻型客车GFRP板簧的设计要求。 相似文献
16.
Mostefa Bourchak Rafic Ajaj Mahmoud Khalid Khalid A. Juhany Arun Prakash V. R. Hassan Alshahrani 《乙烯基与添加剂工艺杂志》2023,29(3):448-457
The aim of this study is to develop a light weight hybrid biocomposite using pineapple and Kevlar fiber with peanut husk cellulose in vinyl ester resin for applications in unmanned aerial vehicles. This study focuses on how the silane treatment on fiber and cellulose particle influences the mechanical, fatigue and low velocity impact properties of this hybrid biocomposites. Using hand lay-up technique, the biocomposite was prepared with cellulose loading ranging from 1 to 5 vol%. The results revealed that the 5 vol% of cellulose added composite had an improved tensile, impact, flexural, hardness and ILSS of 161 MPa, 224 MPa, 6.8 J, 84 shore-D and 21.4 MPa. Moreover, the biocomposite with the inclusion of 3 vol% cellulose had an improved fatigue life count of 42 697, 29 821, 22 381 and 18 164 at 25%, 50%, 75% and 90% of UTS. Similarly, the 3 vol% cellulose reinforced composite showed an improved low velocity impact toughness of 12.36 J. The obtained results clearly indicated that these mechanically strengthened and highly toughened biocomposites could be used as working material for number of applications, especially in making of UAVs for the aerospace industry, automotive components for the transportation sector and structural material in domestic infrastructure. 相似文献
17.
18.
碳纤维复合材料的耐腐蚀性能 总被引:1,自引:0,他引:1
碳纤维增强树脂基复合材料具有比强度和比模量高、耐疲劳性好、性能可设计和易于整体成型等许多优异特性,已成功用于复合材料结构件中。碳纤维复合材料的耐腐蚀性能足工程应用中的一个主要技术指标。从材料学的角度分析了碳纤维复合材料的耐腐蚀性能,包括耐候性、耐水性、耐介质腐蚀性、耐热性等,可为复合材料结构件的设计、选材、成型、使用及贮存维护提供参考。 相似文献
19.
本文描述了复合材料汽车板簧与车桥壳联接处的损伤原因。提出了该联接夹座的技术性能要求和结构设计方案。经过八十万次台架疲劳试验和4.8万多km的实地道路试验证明夹座的联接方式能基本满足设计要求,适合用于复合材料汽车板簧的安装联接。 相似文献