本文選題：爆炸力學(xué)　切入點(diǎn)：定量表征　出處：《爆炸與沖擊》2016年01期 　論文類型：期刊論文

【摘要】：以爆炸焊接界面形貌為研究對象,利用分形理論研究其界面特征。運(yùn)用三維超景深顯微鏡獲得界面形貌圖像,利用Matlab圖像分析技術(shù)對界面形貌進(jìn)行二值化處理,基于分形理論計(jì)算圖像分維值以及多重分維譜。由分維值及多重分形譜的物理意義可知,輪廓分維值是對界面不規(guī)則程度宏觀度量,而多重分形譜能定量表征界面的起伏程度及高度分布。因而,通過對界面結(jié)構(gòu)進(jìn)行分形幾何分析,可實(shí)現(xiàn)界面形貌定量表征,彌補(bǔ)當(dāng)前定性分析的不足。
[Abstract]:The interface features of explosive welding were studied by fractal theory. The interface morphology was obtained by using 3D depth of field microscope, and binary processing was carried out by using Matlab image analysis technology. Based on fractal theory, fractal dimension and multifractal spectrum of image are calculated. From the physical meaning of fractal dimension and multifractal spectrum, the fractal dimension of contour is a macroscopic measure of interface irregularity. The multifractal spectrum can quantitatively characterize the fluctuation degree and height distribution of the interface. Therefore, the quantitative characterization of the interface morphology can be realized by the fractal geometry analysis of the interface structure, which can make up for the deficiency of the current qualitative analysis.
【作者單位】： 南昌大學(xué)機(jī)電工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(11202093)
【分類號】：O381
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本文編號：1586562