کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5485389 | 1523188 | 2017 | 39 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Identification of the mechanical moduli of flexible thermoplastic thin films using reflected ultrasonic waves: Inverse problem
ترجمه فارسی عنوان
شناسایی ماژول مکانیکی فیلمهای نازک ترموپلاستی با استفاده از امواج مافوق صوت منعکس شده: مشکل معکوس
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کلمات کلیدی
فیلم های انعطاف پذیر ضخیم جامد، لایه، سونوگرافی، قابلیت ارتجاعی، رسانه لایه مشکل معکوس مدول مکانیکی،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
چکیده انگلیسی
A method for the identification of the mechanical moduli and density of flexible, supple thermoplastic thin films placed on elastic substrates using ultrasonic waves has been developed. The composite medium immersed in a fluid host medium (water) was excited using a 50Â MHz transducer operating at normal incidence in reflection mode. Inverse problems involving experimental data pertaining to elastic wave propagation in the thin films on their substrates and theoretical fluid-solid interaction models for stratified media using elasticity theory were solved. Two configurations having different interface boundary conditions (BC) were modeled, transverse slip for the sliding contact interface in the case where the thin films were placed on the substrate without bonding; a bonded interface condition. The inverse problem for the recovery of the mechanical parameters were solved for the thin films under the bonded and slip BCs. Substrates made of different elastic materials having different geometries were also evaluated and their advantages discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 81, November 2017, Pages 10-22
Journal: Ultrasonics - Volume 81, November 2017, Pages 10-22
نویسندگان
Hacene Lazri, Erick Ogam, Boudour Amar, Z.E.A. Fellah, Andrew O. Oduor, Paul Baki,