Figure 3
A scatter plot represents the short-term fit of measured versus predicted values over time. The horizontal axis represents time in days, ranging from 0 to 175 days. The vertical axis represents the property value P, ranging from 0.3 to 1.0. The plot includes dozens of data points, with measured values shown as circular markers and predicted values as cross symbols. The color scale on the right denotes temperature levels in Kelvin, ranging from 430 K to 480 K. The data points show clusters at different time intervals, indicating the model's ability to capture temperature-dependent degradation behavior across the short-term aging window.Short-term prediction performance of the PINN for thermal-oxidative degradation. Measured property values are shown as circular markers, and PINN predictions as cross symbols. The color scale denotes the corresponding temperature levels (423–483 K), illustrating the model's ability to accurately capture temperature-dependent degradation behavior across the short-term aging window