کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
269185 504461 2006 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A modal parameter based technique to inspect welded reinforcement splices
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
A modal parameter based technique to inspect welded reinforcement splices
چکیده انگلیسی

The objective of this study is to investigate the technical feasibility of using a modal parameter based global nondestructive damage evaluation method to evaluate, quantitatively, welded reinforcement splices during the construction process. For the purpose of this study, an expression which predicts the strength of the weld, in terms of the yield strength of the steel and the effective stiffness change in the weld, is developed. Then, an experiment to nondestructively measure the fractional stiffness changes, using changes in modal parameters and a system identification technique, in the welded region of 27 welded reinforcing bars is performed. For comparative purposes, a conventional nondestructive testing (NDT) method, radiographic inspection, and destructive tensile tests are performed to evaluate the accuracy of the nondestructive strength prediction procedure. The predicted strengths of the weld systems, obtained from the strength–damage models and the nondestructively measured fractional stiffness change, are compared with those from the destructive tensile test. Also, areas for potential improvement for field implementation of the methodology are investigated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 28, Issue 3, February 2006, Pages 453–465
نویسندگان
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