The higher the temperature, the lower the critical fiber volume fraction.
温度越高，临界纤维体积分数越低。
Under this condition of experiment, the critical fiber volume fraction is 34 5%.
在本试验条件下，纤维强化临界体积分数为345%。
One of the aims in the design of 3D fabric parameters is to meet the requirement of fiber volume fraction.
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 (FVF).
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。
Structural characteristics of orthogonal binding weave and their effect on the fiber volume fraction of reinforcement;
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。
This process can add mould pressure to the preforms through inflating the bladder. Thus, higher fiber volume fraction can be achieved.
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。
The results show that with the increase of fiber volume fraction, the unhomogeneous infiltration of liquid metal changes into homogeneous one.
结果表明：金属流体的浸渗充型随着纤维体积分数的增大，从非均衡浸渗向均衡浸渗变化。
The experimental results show that the compressive strength of preform increases with the increasing of fiber volume fraction and binder mass fraction.
试验结果表明，氧化铝短纤维预制件的抗压强度随着纤维体积分数的升高而升高，随着黏结剂质量分数的提高而升高。
The experimental results show that the compressive strength and split tensile strength have different increases as the fiber volume fraction increases.
试验结果表明，随着碳纤维质量百分数的增加，水泥砂浆的抗压强度和劈裂抗拉强度都有不同程度的提高。
Due the low fiber volume fraction of the composite skirt fabricated by vacuum-assisted resin transfer molding (VARTM), bladder-assisted RTM is suggested.
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。
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.
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。
Special measuring steps were designed according to the principles of determining the fiber volume fraction, using the geometrical method and threshold method.
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。
The natural frequency of the composite T-beams increases and damping properties of the composite T-beams decrease with the increasing of fiber volume fraction.
且其固有频率随纤维体积分数的增大而提高，阻尼性能随纤维体积分数的增大而降低。
The experiment results indicate the deformation properties of composites are affected by fiber volume fraction, fabric structure and parameter, tensile direction etc.
结果表明，复合材料的变形性能与增强纤维的含量，织物的组织结构及参数，拉伸方向等因素有关。
A coording to "Rule of Mixture", analyses the relation between fiber volume fraction and composit tensile property; presents theoretical range of fiber volume fraction.
前言： 根据复合材料的“混和定律”，从理论上分析了纤维增强县合材料的拉伸性能与纤维体积分数的关系，导出了纤维体积分数的理论取值范围。
The effect of fiber volume fraction on natural frequency and damping was analyzed. The measured and finite element calculated results of natural frequency were compared.
将实验得到的固有频率结果与有限元得到的固有频率结果作了对比。
The experimental result shows that higher bladder pressure decreases thickness of composite bearing cylinder, increases fiber volume fraction and improves the bending properties.
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；
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.
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。
Obviously, the addition of polypropylene fibers is significant in controlling plastic shrinkage cracks in the early stage and improving ductility for concrete at low fiber volume fraction.
低掺量的聚丙烯纤维掺入混凝土后可显著控制混凝土早期收缩裂缝，提高混凝土的耐久性。
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.
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。
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.
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。
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.
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。
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。
The thermal conductivity of the composite is not only dependent on the volume fraction, but also the arrangement of carbon fiber.
这类复合材料的热传导性能主要取决于其组成中的碳纤维含量与排布方式。
The definition and function of the volume fraction and mass fraction for the hybrid fiber composite material was approached.
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；
Suitable fiber length and volume fraction are pacing factors of improving absorbing property of mortar.
适当的纤维长度和体积掺量是提高砂浆吸波性能的决定性因素；
The higher the volume fraction of short fiber, the more serious shear stress concentration in the end of short fiber;
纤维体积分数越大，纤维末端剪切应力集中越严重；
The effects of volume fraction, cross section shape of fibers and the relative thermal conductivity of fiber and matrix on thermal conductivity of composites are analyzed in this thesis.
本文通过计算结果比较，分析了复合材料体分比、纤维截面形状、纤维与基体的相对导热系数对复合材料整体导热性能的影响。
The invention relates to a method for testing the volume fraction of the cyclic structure of pan-based stabilized fiber, which belongs to the analyzing-testing field.
本发明的聚丙烯腈预氧丝环化结构体积分数的测试方法属于分析测试领域。
The invention relates to a method for testing the volume fraction of the cyclic structure of pan-based stabilized fiber, which belongs to the analyzing-testing field.
本发明的聚丙烯腈预氧丝环化结构体积分数的测试方法属于分析测试领域。
应用推荐