随着纤维体积含量的增加，复合材料降解速度增大。
With the increase of the fiber volume contents, the degradation rate of the composites raised.
预制坯体的纤维体积含量选为25％至30％为最好。
The proper fibre volume fraction of original is between 25% and 30%.
三维机织物设计的一个目标是满足要求的纤维体积含量。
One of the aims in the design of 3D fabric parameters is to meet the requirement of fiber volume fraction.
按照测定纤维体积含量的原理，设计了几何法和阀值法的测试步骤。
Special measuring steps were designed according to the principles of determining the fiber volume fraction, using the geometrical method and threshold method.
纤维体积含量是决定纤维增强复合材料各项力学性能的一个重要参数。
Fibre volume fraction is a very important parameter that determines variety of properties of fibre-reinforced composite materials.
纤维体积含量是决定纤维增强复合材料各项力学性能的一个重要参数。
Structural characteristics of orthogonal binding weave and their effect on the fiber volume fraction of reinforcement;
本文介绍了断裂参数之间的关系和纤维体积含量，其断裂失效机理的探讨。
The paper presents the relationship between fracture parameters and the fibre volume fraction, and probes into its fracture failure mechanism.
利用硅橡胶气囊辅助RTM工艺，可以制作纤维体积含量较高的复合材料构件。
The fiber volume of composite parts made by silicon rubber inflatable bag is high.
试验结果表明，气囊充压压力使复合材料承力筒的壁厚减薄，纤维体积含量增加，弯曲性能提高；
The experimental result shows that higher bladder pressure decreases thickness of composite bearing cylinder, increases fiber volume fraction and improves the bending properties.
同样沉积条件下，纤维体积含量40%的复合材料与含量为30%的复合材料相比，气孔率略大。
Under the same deposition condition, the porosity of composites with 40% fiber volume fraction is a little bigger than that with 30% fiber volume fraction.
该工艺通过向气囊内充压，对预成型体施加一定的成型压力，从而提高构件纤维体积含量及力学性能。
This process can add mould pressure to the preforms through inflating the bladder. Thus, higher fiber volume fraction can be achieved.
在实验分析的基础上，建立了不同钢纤维体积含量活性粉末混凝土受压应力-应变全曲线的数学表达式。
A mathematical expression for compressive stress-strain curve of reactive powder concrete was established for different stee1 fiber volume fractions based on experimental analysis.
VARTM工艺成型的固体火箭发动机壳体复合材料连接裙段构件纤维体积含量较低，复合材料力学性能不佳。
The composite skirts for solid rocket motor shells fabricated by VARTM (VacuumAssisted Resin Transfer Molding) had poor mechanical properties because the fiber volume fraction was very small.
文中阐述了适用于三维机织复合材料纤维体积含量测定的3种新方法：称量法、理论模型法、数字图像分析法。
Three kinds of new methods used for detecting fiber volume fraction of 3D woven composite were introduced, such as weighing method, theory model calculation method, digital image analysis method.
针对某型号上用VARTM工艺制造的复合裙纤维体积含量偏低的缺点，提出用气囊辅助rtm工艺制造该复合裙。
Due the low fiber volume fraction of the composite skirt fabricated by vacuum-assisted resin transfer molding (VARTM), bladder-assisted RTM is suggested.
提出了一种基于一类特殊小波变换对三维编织复合材料拉伸断面进行图像处理、测量复合材料纤维体积含量的方法。
In this paper, a special wavelet transform used to analyze snapped section surface image of three-dimensional braided composite material and detect the fiber volume fraction is proposed.
当钢纤维体积含量超过3.5%后，活性粉末混凝土抗压强度下降，劈拉强度略有提高，而抗折强度仍有明显的提高。
When the steel fiber volume fraction is higher than 3.5%, its compressive strength decreases, the splitting tensile strength increases slightly, however, its flexural strength increases obviously.
通过分析三维正交机织物单元体的结构，可以计算经纱、纬纱和捆绑纱的截面尺寸，建立纤维体积含量与织物参数间的关系。
One of the aims in the design of 3D fabric parameters is to meet the requirement of fiber volume fraction (FVF).
讨论了混杂纤维复合材料体积含量和质量含量的定义和作用；
The definition and function of the volume fraction and mass fraction for the hybrid fiber composite material was approached.
本文最后研究了聚丙烯纤维的体积含量对大掺量粉煤灰混凝土断裂参数的影响。
Finally, the paper investigates how the volume content of polypropylene fibers affects the fracture parameters of high-volume fly ash concrete.
并且讨论了网格细化、钢纤维嵌入长度、体积含量、基体强度、纤维刚度等参数变化对计算模型产生的影响。
And discussed the influence which caused by thin grid, the insert length of steel fiber, volume ratio, substrate intensity, fiber rigidity and so on.
发现体积含量为f的短纤维无序取向SFRC一维力学行为，等效于体积含量为F的短纤维单轴取向SFRC在取向轴上的力学行为。
One dimensional mechanical behavior of isotropic SFRC with fiber volume fraction fis equal to axial mechanical behavior of unidirec-tionally aligned short fiber composite with fiber volume fraction F.
发现体积含量为f的短纤维无序取向SFRC一维力学行为，等效于体积含量为F的短纤维单轴取向SFRC在取向轴上的力学行为。
One dimensional mechanical behavior of isotropic SFRC with fiber volume fraction fis equal to axial mechanical behavior of unidirec-tionally aligned short fiber composite with fiber volume fraction F.
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