کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5357612 | 1503637 | 2015 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A modified positron lifetime spectrometer as method of non-destructive testing in materials
ترجمه فارسی عنوان
یک طیف سنج طول عمر پوزیترون اصلاح شده به عنوان روش آزمایش غیر مخرب در مواد
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
This paper aims to develop a new non-destructive testing (NDT) method using positron annihilation spectroscopy, a powerful tool to detect vacancy-type defects and defect's chemical environment. A positron NDT system was designed and constructed by modifying the “sandwich” structure of sample-source-sample in the conventional positron lifetime spectrometer. The positron lifetime spectra of one single sample can be measured and analyzed by subtracting the contribution of a reference sample. The feasibility and reliability of the positron NDT system have been tested by analyzing nondestructively deformation damage caused by mechanical treatment in metals and steels. This system can be used for detecting defects and damage in thick or large-size samples without cutting off the sample materials, as well as for detecting two-dimensional distribution of defects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 327, 1 February 2015, Pages 418-423
Journal: Applied Surface Science - Volume 327, 1 February 2015, Pages 418-423
نویسندگان
Z.Q. Chen, J.J. Shi, J. Jiang, X.B. Liu, R.S. Wang, Y.C. Wu,