A review on research progress of machining technologies of carbon fiber-reinforced polymer and aramid fiber-reinforced polymer reading report

词汇

1. glass–fiber polymer (GFRP), carbon–fiber polymer (CFRP), and aramid–fiber polymer (AFRP).

   GFRP：light weight and high strength

   CFRP： good heat resistance, lightweight, high strength, and high modulus,

   AFRP： its high strength, high modulus, especially the low density and high wear resistance

2. yield phenomenon：屈服现象

3. the interlaminar stress：层间应力

4. 【提出用词】pointed, stated,

5. fatigue failure：疲劳失效

6. prominent fibers, groove：突出纤维、沟槽

句子

1. As Figure 2, it is generally defined as the clockwise angle between the cutting direction and the fiber direction, and it always expressed as $\theta$.

2. With the improvement of the performance requirements of composite materials, it is urgent to accurately characterize the material interface, which is the premise of interface performance design. The research on the strength properties of composite materials is not deep enough, and the research on the mechanical properties under complex loads is still in the exploration stage.

   随着复合材料性能要求的提高，迫切需要准确表征材料界面，这是界面性能设计的前提。对复合材料强度性能的研究还不够深入，复杂载荷作用下的力学性能研究还处于探索阶段。

3.

问题

1. 什么是 Taguchi’s method，cemented carbide end mills

2. 【41 Ye 刀具损伤】

3. 【43 Ren 最佳刀具及刀具磨损机制】They found the best tool materials needed for composites materials and the main mechanism of tool wear is adhesion and abrasive wear.

   他们发现复合材料所需的最佳刀具材料，刀具磨损的主要机制是附着磨损和磨粒磨损

结论

1. 【P2 恢复高度和纤维角度的关系】 The height size of the cutting restoration is related to the corner radius. When the fiber direction is $\theta < 90^\circ $, the restoration height is approximately equal to the corner radius; when $\theta > 90^ {\circ}$, the restoration height can be more than two times the corner radius and related to the value of $\theta​$

2. 【】cutting depth 随 fiber orientation

3. $\Delta = r{min}\cdot (1+\cos\theta)+d{fiber}$ where $\Delta$ is damage depth, $r{min}$ is minimal fiber curvature radius, and $d{fiber}​$ is fiber diameter.

4. 【FRP的剪切形式】It was pointed that the cutting forms of FRP were divided into shearcutting mode, bending-shear mode and interlayer separation mode

5. conducted milling process by using diamond milling cutter and pointed that thecutting force increased with feed speed, but decreased with the increase of cutting speed when machining of FRP.

   利用金刚石铣刀进行铣削加工，指出加工玻璃钢时，切削力随进给速度增大而增大，随切削速度增大而减小。

6. 【开槽测试：切削变量和阻力的关系】Dharan and Won35 carried out high-speed slotting test and analyzed the effects of cutting parameters such as feed rate, depth-of-cut etc. on cutting force for FRP.

7. 【铣削】Ferreira et al.36 conducted milling tests by using cylindrical milling cutter and analyzed the relationship among cutting tool angles, cutting parameters, cutting force, and surface defects

8. 【38？？？. 三向铣削剪切力关系】

   $$\left\{ \begin{aligned} F_x(\delta,\sigma) = M \cdot \sum_{j=1}^N g(\delta_j)[F_{xcj}\cos\sigma + F_{yoj}\sin\sigma]\\ F_y(\delta,\sigma) = \sum_{j=1}^Ng(\delta_j)[-F_{xcj}\sin\sigma+Fyoj\cos\sigma]\\ F_z(\delta,\sigma) = \sum_{j=1}^Ng(\delta_j)[F_{zcj}\sin2\sigma+F_{fa}] \end{aligned} \right.$$

9. 【切割参数和玻璃化温度对CFRP表面质量的影响】

   $feed\ speed > cutting\ speed > radial\ depth\ of\ cut$

   

   It can be seen that the cutting temperature had negative effect on surface quality. That is because when the cutting temperature increased, the resin would occur degradation and the matrix cannot provide enough security for the fibers. Hence, the machining quality of composite materials was poor.

10. Research showed that two-flute end mill processes higher surface quality than six-flute end mill.

    双槽立铣刀优于六槽立铣刀

11. 【44. Haddad】According to the experimental results, it can be seen that not only the tool geometry, but also the cutting parameters have important contribution percentages of the parameters affecting surface quality.

    刀具的几何形状和切削参数在影响表面质量的参数中占有重要贡献

12. 【】Results showed that tool wear was serious at low cutting speeds and high feed rates, and tool life could be improved by reducing feed rates and intermediate cutting speeds.

    结果表明:在低切削速度和高进给速度条件下，刀具磨损严重，降低进给速度和中间切削速度可提高刀具寿命;

13. 【主要研究方向】improving mechanical processing performance of composite materials is mainly on improving the sharpness of cutting edge, cutting tool angle and cutting parameter optimization

14. 【疲劳失效原因】The fatigue failure of composites parts is mainly determined by the surface quality and the service environment. 表面完整性和使用环境

15. 【表面完整性内容】Because the service environment is restricted during the using period, the fatigue life mainly depends on the surface integrity which includes the surface roughness, the surface morphology, the residual stress, etc.

    surface roughness：表面粗糙度，surface morphology：表面形态，residual stress：残余应力

16. 【纤维方向】Stout et al.46 researched on the measurement of machined surface roughness, and found that when the fiber direction was between 15  and 60 , the surface roughness can be controlled under 1–1.5 lm. When the fiber direction was over 60 , the surface quality was seriously deteriorated and difficult to measure.

    Stout等46对加工表面粗糙度的测量进行了研究，发现当纤维方向在15 ~ 60之间时，表面粗糙度可控制在1 ~ 1.5 um以下。当纤维方向大于60时，表面质量严重恶化，难以测量。

17. 【研究前景】碳纤维材料复合加工，Finite element method：complex loads，Material modification：improved fiber properties or improved properties of fiber and matrix bonding