吉林大学学报(工学版) ›› 2024, Vol. 54 ›› Issue (11): 3192-3198.doi: 10.13229/j.cnki.jdxbgxb.20230631
• 材料科学与工程 • 上一篇
基于CT三维重构技术的沥青混凝土疲劳损伤演化
周兴林1,2,3(
),刘洋1,2,3,柳璐1,2,3
- 1.武汉科技大学 机械自动化学院，武汉 430081
2.武汉科技大学 机械传动与制造工程湖北省重点实验室，武汉 430081
3.武汉科技大学 教育部冶金设备与控制技术重点实验室，武汉 430081
Fatigue damage evolution of asphalt concrete based on CT 3D reconstruction technology
Xing-lin ZHOU1,2,3(),Yang LIU1,2,3,Lu LIU1,2,3
- 1.School of Mechanical Automation，Wuhan University of Science and Technology，Wuhan 430081，China
2.Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering，Wuhan University of Science and Technology，Wuhan 430081，China
3.Key Laboratory of Metallurgical Equipment and Control Technology，Ministry of Education，Wuhan University of Science and Technology，Wuhan 430081，China
摘要：
由于沥青混凝土内部结构极其复杂，会在不同疲劳阶段呈现出不同的变化特征，为了解沥青混凝土的疲劳损伤演化过程，在CT三维重构技术的基础上对其展开研究。对沥青混凝土展开疲劳实验，得到不同疲劳阶段的CT扫描图像和三维重构图像；利用差分盒维数法计算CT三维重构图像分形维数，得到疲劳损伤次数与分形维之数间的关系；利用Miner线性疲劳损伤模型重新定义沥青混凝土的损伤变量，得到疲劳损伤演化过程呈线性变化的结论。通过构造环氧沥青混凝土试件展开实验测试，结果表明：本文方法能准确计算出沥青混凝土压缩位移和裂缝体积与疲劳损伤之间的关系，推理得到沥青混凝土的疲劳损伤演化过程。
中图分类号:
- U334
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