کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4912389 1428550 2016 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Assessment of thermo-oxidative induced chemical strain by inverse analysis of shrinkage profiles in unidirectional composites
ترجمه فارسی عنوان
ارزیابی تنش شیمیایی القایی با ترمیم اکسیداتیو با تحلیل معکوس پروفیل های انقباضی در کامپوزیت های یک طرفه
کلمات کلیدی
ترک اکسیداسیون، فشار شیمیایی، کامپوزیت ماتریس ارگانیک، سالخورده، روش رایلی ریتز،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The present paper focuses on the assessment of thermo-oxidative induced chemical strain in HTS/TACTIX carbon/epoxy Organic Matrix Composites for High Temperature Applications, by inverse analysis of shrinkage profiles in unidirectional composites. First, measurement of matrix shrinkage in composites surface is carried out by Interferometric Microscopy for virgin samples (initial state) and for samples aged under oxygen pressure and air at atmospheric pressure: then, a model based on thermodynamics with Internal Variables and ABAQUS numerical simulations carried out on unidirectional composite realistic samples are employed for inverse identification of thermo-oxidative induced chemical strain and its evolution during conditioning. The identification is performed successfully and validated against chemical shrinkage profiles developing in pure resin systems. The model is then used for calculating thermo-oxidative induced stresses related to chemical shrinkage inelastic strains and for the prediction of the observed fibre/matrix debonding scenario. A Rayleigh-Ritz method is also developed for rapid prediction of matrix shrinkage in composite materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 157, 1 December 2016, Pages 320-336
نویسندگان
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