## 4 Results  
### Tensile Properties of EMWM  
The load-displacement curve of EMWM in Figure 10 demonstrates an obvious deformation trend. At the beginning of the stretching process, a short linear elastic deformation (stage I) is experienced. Currently, the load-displacement relationship satisfies Hooke's law. From a macroscopic point of view, there is no apparent deformation at this stage, and its shape and structure remain stable. At this stage, it exhibits excellent elastic properties and is able to respond quickly to the external force. When the elastic limit is reached, EMWM appears elastic-plastic deformation and enters the soft deformation (stage II). A slight expansion starts to occur at the center of the EMWM specimens at this time, when the porosity between the metal wires in extrusion contact increases, and the porosity at the slip contact point further increases, resulting in uneven plastic deformation and local strength yielding. In the damage deformation stage (stage III), with the increase in tensile stress, the local yield propagates continuously, and the expansion phenomenon becomes more significant. Deformation hardening of EMWM increases the ability to resist deformation, resulting in insignificant load changes. In the stage of stable damage destruction (stage IV), due to the deformation hardening cannot keep up with the development of plastic deformation, ultimately leading to the gradual expansion of the EMWM tearing. Throughout the tensile deformation process, the EMWM presents expansion in the direction perpendicular to the force, with a negative Poisson's ratio effect, which is manifested in the transverse dimension becoming larger. At the final failure, the specimen shows a macroscopic overall fracture phenomenon [1]. From Figure 11a, it can be observed that there are some differences in the linear stage under different parameters. From Tables 7 and 8, it can be seen that filament diameter and density have similar effect on the tensile strength, and thickness has the least effect on the tensile strength. An increase in density means that there are more wires per unit volume with relatively more points of connection between them, which can increase overall structural stability and strength. Higher densities increase the tensile properties because there are more connection points to resist external tensile forces. Larger filament diameters imply relatively large gaps between the wires, resulting in a loose structure. As the filament  
Figure 10: Tensile test curve and tensile process diagram. diameter increases, the overall strength decreases since there are fewer connection points between the wires. By contrast, a smaller filament diameter increases the number of wires and improves the density of the connection points, which contributes to higher tensile strength [1]. By comparing the \(K\) values, the maximum tensile strength is obtained when the molding density is 3.0 \(\times\) 10\({}^{3}\) kg/m\({}^{3}\), the thickness is 5 mm, and the filament diameter is 0.1 mm. EMWM-10 was prepared based on this combination. By testing three groups of EMWM-10 (Figure 11b), it can be calculated that its tensile strength is 96.14 N/mm, which is 31.07% higher than that of EMWM-7. Therefore, EMWM-10 is used as the test specimen to reveal the effect of loading rate and loading displacement.