Al-Al爆炸焊接界面边侧与中心区域差异定量评价（英文）

发布时间：2018-01-22 05:47

本文关键词： 爆炸焊接界面形貌分维表征　出处：《稀有金属材料与工程》2017年07期 　论文类型：期刊论文

【摘要】：由于边侧稀疏波的作用,爆炸焊接界面边界与中心区域形貌结构存在差异。然而学术上对焊接界面形貌差异分析仍处于定性水平,尚未建立定量分析方法。据此,尝试对爆炸焊接界面形貌差异开展定量化评价。研究过程中首先建立冲击波作用下金属复板弹粘塑性模型以分析波状界面的形成,并开展2024Al对称爆炸焊接;随后运用三维超景深显微镜获得界面形貌图像,结合冲量理论,定义中心区域与边侧区域分界线;最后基于分形理论计算图像轮廓分维与多重分维谱。由分维与多重分形谱数据可定量表征界面的起伏程度与表面最大、最小概率分布,从而实现焊接界面形貌差异定量描述。
[Abstract]:Due to the effect of edge-side sparse wave, there is a difference between the boundary of the explosive welding interface and the structure of the central area. However, the analysis of the morphology difference of the welding interface is still at a qualitative level. No quantitative analysis method has been established. In the research process, the elastic-viscoplastic model of the metal clad plate under shock wave was established to analyze the formation of the wave-like interface. The symmetrical explosive welding of 2024Al was carried out. Then the interface image is obtained by using 3D hyper-field microscope and the boundary line between the center region and the lateral area is defined by the impulse theory. Finally, fractal dimension and multifractal spectrum of image contour are calculated based on fractal theory. Fractal and multifractal spectrum data can be used to quantitatively characterize the maximum and minimum probability distribution of the interface. In order to realize the quantitative description of weld interface morphology difference.
【作者单位】：南昌大学;
【基金】：National Natural Science Foundation of China(11202093,51465039)
【分类号】：TG456.6
【正文快照】： With the development of industry,people have higherExperimental results show that the Kelvin-Helmholtzrequirements for material properties and scale.Compositeinstability leads the wave to lose symmetry and forms crestsplates produced by explosive welding

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