کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4918480 1428766 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research on local deformation property of asphalt mixture using digital image correlation
ترجمه فارسی عنوان
تحقیق بر روی ویژگی تغییر شکل محلول آسفالت با استفاده از همبستگی تصاویر دیجیتال
کلمات کلیدی
مخلوط آسفالت، روش همبستگی تصویر دیجیتال، ارزیابی کیفیت تصویر، اموال تغییر شکل محلی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Failure behavior of asphalt mixture is the process of local deformation accumulation, therefore, local deformation investigation is the base work of failure behavior. Digital image correlation (DIC) method is an optical method which can calculate the local deformation in the failure process. This paper aims to evaluate the precision, select the optimal test parameters for DIC deformation measurement based on natural speckle image, and investigate the local deformation characteristic in the failure process for different mixtures. The results show the image quality of AC with smaller normal maximum aggregate size (NMAS) is better for DIC deformation calculation, the relative deviation of virtual translation and shear test can satisfy the precision requirement, the optimal subset size is 31. Based on the strain distribution, the optimal local deformation measure length for indirect tensile test is set as 50 mm, the critical steady strain is proposed based on R2 obtained by the least squares fitting method, according to local deformation characteristic, the results show SMA can bear more deformation before unstable deformation stage and failure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 140, 1 June 2017, Pages 416-423
نویسندگان
, , , , ,