## 4 Conclusions  
In this study, preliminary research was conducted to develop PP-based, UHMWPE-reinforced, high-strength composites. FEA was used to estimate the elastic properties of the UHMWPE/PP textile composites. As a reinforcement, a textile woven with UHMWPE fibers was incorporated into the PP matrix. In terms of the weaving type, the reinforcements were fabricated by replicating plain and twill-woven textiles. A composite 3D model was generated based on these composite development requirements. Furthermore, the elastic properties of the composites were compared and analyzed by varying the volume fraction of UHMWPE fibers incorporated into the composites from 45% to 75%.  
Figure 5: Comparison of the predicted values of Poisson’s ratio.  
1. The UHMWPE fibers were organized in the composites as reinforcements, which were positioned perpendicular to each other to form the textile composite. Consequently, E\({}_{11}\) and E\({}_{22}\) of the x- and y-axes of the composites exhibited the same results. In contrast, E\({}_{33}\) (the thickness direction of composites) exhibited a different trend compared with E\({}_{11}\) and E\({}_{22}\). Based on the comparative analysis of the estimated elastic modulus values, the elastic modulus of the composites with textiles fabricated using the plain weaving method was superior to that of the textile composites fabricated using the twill weaving method.
2. Based on the comparative analysis of the calculated shear modulus values, G\({}_{23}\) and G\({}_{31}\) of the x- and y-axes of the composites exhibited the same results, owing to the interwoven fibers. The shear modulus calculation results for the plain-woven reinforcement textiles were different. In contrast, for the twill-woven textiles, the shear modulus in all directions exhibited similar values.
3. The elastic properties of composites depend on the properties and volume fractions of the materials used. As the volume of the UHMWPE weave increases, the material's properties improve due to the superior properties of UHMWPE. Alternatively, if the volume fraction of UHMWPE is reduced, the material properties can be closer to PP.
4. Based on the comparative analysis of the calculated Poisson's ratio of the composites, the strain caused by the twill weaving method was larger. Furthermore, it was confirmed that the plain-woven textiles with numerous weft and warp interlacements had a smaller strain.  
Therefore, when fabricating composites with textile-type reinforcements, the type of textile reinforcement used may be determined based on the application and physical properties. Furthermore, for an accurate computation, the simulation for developing composites should be quantified by measuring the tensile and shear strengths of real composites.  
Conceptualization, J.-H.Y.; writing--original draft, Y.-J.J.; writing--review and editing, writing--original draft preparation, supervision, M.-S.K. All authors have read and agreed to the published version of the manuscript.  
This work was supported by National Research Foundation of Korea (NRF) grants funded by the Korean government (MSIT) (NRF-2022R1G1A1004962). This research was supported by the \"Regional Innovation Strategy (RIS)\" through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (MOE) (2021 RIS-004).  
Not applicable.  
The authors declare no conflict of interest.