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Application of Kernel Density Estimation in Lamb Wave-Based Damage Detection
المؤلفون المشاركون
المصدر
Mathematical Problems in Engineering
العدد
المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-24، 24ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2012-08-08
دولة النشر
مصر
عدد الصفحات
24
التخصصات الرئيسية
الملخص EN
The present work concerns the estimation of the probability density function (p.d.f.) of measured data in the Lamb wave-based damage detection.
Although there was a number of research work which focused on the consensus algorithm of combining all the results of individual sensors, the p.d.f.
of measured data, which was the fundamental part of the probability-based method, was still given by experience in existing work.
Based on the analysis about the noise-induced errors in measured data, it was learned that the type of distribution was related with the level of noise.
In the case of weak noise, the p.d.f.
of measured data could be considered as the normal distribution.
The empirical methods could give satisfied estimating results.
However, in the case of strong noise, the p.d.f.
was complex and did not belong to any type of common distribution function.
Nonparametric methods, therefore, were needed.
As the most popular nonparametric method, kernel density estimation was introduced.
In order to demonstrate the performance of the kernel density estimation methods, a numerical model was built to generate the signals of Lamb waves.
Three levels of white Gaussian noise were intentionally added into the simulated signals.
The estimation results showed that the nonparametric methods outperformed the empirical methods in terms of accuracy.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Yu, Long& Su, Zhongqing. 2012. Application of Kernel Density Estimation in Lamb Wave-Based Damage Detection. Mathematical Problems in Engineering،Vol. 2012, no. 2012, pp.1-24.
https://search.emarefa.net/detail/BIM-1001576
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Yu, Long& Su, Zhongqing. Application of Kernel Density Estimation in Lamb Wave-Based Damage Detection. Mathematical Problems in Engineering No. 2012 (2012), pp.1-24.
https://search.emarefa.net/detail/BIM-1001576
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Yu, Long& Su, Zhongqing. Application of Kernel Density Estimation in Lamb Wave-Based Damage Detection. Mathematical Problems in Engineering. 2012. Vol. 2012, no. 2012, pp.1-24.
https://search.emarefa.net/detail/BIM-1001576
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1001576
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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