کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10292816 | 511547 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel 2-D random void model and its application in ultrasonically determined void content for composite materials
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A novel 2-D random void model and its application in ultrasonically determined void content for composite materials A novel 2-D random void model and its application in ultrasonically determined void content for composite materials](/preview/png/10292816.png)
چکیده انگلیسی
A two-dimensional (2-D) Random Void Model (RVM) is innovatively developed to describe random voids and to quantitatively correlate ultrasonic attenuation coefficient with void content of composite materials. The spatial autocorrelation function and statistical parameters are used to describe the large-scale heterogeneity from the composite matrix and the small-scale heterogeneities of elastic fluctuations from random voids. The RVMs of Carbon Fiber Reinforced Polymer (CFRP) composite specimens over a void content range of 0.03-4.62% are presented. Outstanding improvements of geometric simulations of voids morphology and quantitative correlation of porosity and ultrasonic attenuation coefficient at 5Â MHz are observed. It is concluded that this method is suitable to identify random voids and to predict void content of composite materials nondestructively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NDT & E International - Volume 44, Issue 3, May 2011, Pages 254-260
Journal: NDT & E International - Volume 44, Issue 3, May 2011, Pages 254-260
نویسندگان
Li Lin, Jun Chen, Xiang Zhang, Ximeng Li,