کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1758883 1019253 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Circumferential phased array of shear-horizontal wave magnetostrictive patch transducers for pipe inspection
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
Circumferential phased array of shear-horizontal wave magnetostrictive patch transducers for pipe inspection
چکیده انگلیسی

Several investigations report effective uses of magnetostrictive patch transducers to generate and measure longitudinal and torsional guided waves in a pipe. They can be used to form a phased array for the circumferential inspection of pipes. Although there are circumferential phased arrays employing piezoelectric transducers or EMAT’s, no magnetostrictive patch transducer based array system has been attempted. In this investigation, we aim to develop a circumferential phased magnetostrictive patch transducer (PMPT) array that can focus shear-horizontal waves at any target point on a cylindrical surface of a pipe. For the development, a specific configuration of a PMPT array employing six magnetostrictive patch transducers is proposed. A wave simulation model is also developed to determine time delays and amplitudes of signals generated by the transducers of the array. This model should be able to predict accurately the angular profiles of shear-horizontal waves generated by the transducers. For wave focusing, the time reversal idea will be utilized. The wave focusing ability of the developed PMPT array is tested with multiple-crack detection experiments. Imaging of localized surface inspection regions is also attempted by using wave signals measured by the developed PMPT array system.


► A circumferential phased magnetostrictive patch transducer array is developed.
► The array uses shear-horizontal waves and is applied for pipe surface inspection.
► Time delays and amplitudes are calculated by an analytic simulation model.
► Wave focusing and damage detection with the array are experimentally confirmed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 53, Issue 2, February 2013, Pages 423–431
نویسندگان
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