کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7216318 1469947 2018 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of the elasto-plastic crack tip singularities via mechano-luminescent effects
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Evaluation of the elasto-plastic crack tip singularities via mechano-luminescent effects
چکیده انگلیسی
New techniques to directly evaluate the plastic singularity of elasto-plastic crack under a mixed mode from the plastic J field, as well as indirectly from an elastic K field, have been suggested using Mechano-luminescence (ML) in SrAl2O4:Eu,Dy. For this purpose, the ML of a plastic core, Hutchinson-Rice-Rosenberg (HRR), field in the vicinity of a physical crack tip during four-point shearing was visualized and analyzed. Plastic stress intensity factors (SIFs) of KMP measured at 829 and 872 N directly from the ML-HRR field showed proper agreement with those of KMPe that were predicted indirectly from elastic SIFs with deviations of less than 11%. An imaginary crack tip within the plastic zone and a propagating angle with the plastic zone size under transient cracking were evaluated separately to verify use of ML technique for considering elasto-plastic crack in Structural Health Monitoring (SHM).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Engineering Science - Volume 123, February 2018, Pages 127-142
نویسندگان
, , , ,