颜色变化评估：通过色差计测量样品在光照前后颜色坐标的变化，量化黄变、褪色或变暗的程度，评估材料的光致变色稳定性。
光泽度保持率测定：使用光泽度仪检测样品表面光泽在光照老化前后的数值变化，反映涂层或材料表面光泽的耐久性能。
拉伸强度保留率测试：对比光照处理前后样品的拉伸强度数据，计算强度保留百分比，评价高分子材料力学性能的光老化衰减情况。
断裂伸长率变化分析：监测材料在经过特定周期光辐照后断裂伸长率的改变，判断其柔韧性和延展性的耐光老化能力。
表面形貌观察：利用显微镜或电子显微镜检查光照后样品表面是否出现粉化、龟裂、起泡或剥落等现象，评估微观结构破坏程度。
红外光谱分析：通过傅里叶变换红外光谱仪检测样品分子官能团在光照前后的特征吸收峰变化，分析化学键断裂或氧化反应程度。
质量损失测定：称量样品在光老化实验前后的质量差异，计算因挥发、降解导致的质量损失率，评估材料整体稳定性。
透光率与雾度测试针对透明或半透明材料，测量其光照前后光线透过率及散射雾度的变化，判断光学性能的劣化情况。
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