کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
561521 | 1451888 | 2012 | 17 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Inverse thermographic characterization of optically unresolvable through cracks in thin metal plates Inverse thermographic characterization of optically unresolvable through cracks in thin metal plates](/preview/png/561521.png)
The present research explores the feasibility of a novel non-contact means for the detection and characterization of small scale, open crack-like defects within thin metal plate components. The approach employs inexpensive infrared (IR) digital camera technology (e.g. ≈$5000US) and sophisticated numerical and algorithmic means as part of an inverse solution framework aimed at inferring the nature (i.e. presence, size, orientation, etc.) of micro-scale defects that are below the optical resolution capability of the IR imaging system. The current work explores a technique for inferring the presence and character of optically unresolvable flaws penetrating metallic plate components (i.e. through cracks).
► This paper reports on an algorithmic means for characterizing flaws in thin metallic plates.
► Optically unresolved flaws in a given pixel may be inferred from behavior of surrounding pixels.
► MLE estimators within a GA framework are efficient for effecting required inverse solutions.
► Currently available, inexpensive IR cameras seem to be practical for such applications.
Journal: Mechanical Systems and Signal Processing - Volume 27, February 2012, Pages 634–650