This paper introduces a new acoustic emission (AE) characteristic to determine the deformation stage of metals under quasi-static loading. The AE characteristic is extracted from the derivative of the cumulative AE energy with respect to time. The reproducibility of the developed feature is demonstrated on a set of A572 Grade 50 steel coupons loaded up to different levels of plastic deformation, and then evaluated using the AE data recorded from aluminum 1100. To address the prior load-dependence of AE data, nonlinear ultrasonics is studied to quantify the presence of plastic deformation as a way to determine the initiation strain during quasi-static load testing typically used for evaluating metallic structures with the AE method. The sensitivity of nonlinear ultrasonics is compared with the linear ultrasonics showing the higher sensitivity of third harmonic nonlinearity coefficient to plastic deformation. The microstructural changes affecting ultrasonics are identified with metallographic characterizations.
机构:
Russian Acad Sci, AA Baikov Inst Met & Mat Sci, 49 Leninskiy Prospect, Moscow 119334, RussiaRussian Acad Sci, AA Baikov Inst Met & Mat Sci, 49 Leninskiy Prospect, Moscow 119334, Russia
Botvina, L. R.
;
Tyutin, M. R.
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Russian Acad Sci, AA Baikov Inst Met & Mat Sci, 49 Leninskiy Prospect, Moscow 119334, RussiaRussian Acad Sci, AA Baikov Inst Met & Mat Sci, 49 Leninskiy Prospect, Moscow 119334, Russia
机构:
Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Kamali, Negar
;
Tehrani, Niloofar
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Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Tehrani, Niloofar
;
Mostavi, Amir
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Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Mostavi, Amir
;
Chi, Sheng-Wei
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Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Chi, Sheng-Wei
;
Ozevin, Didem
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Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Ozevin, Didem
;
Indacochea, J. Ernesto
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机构:
Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
机构:
Russian Acad Sci, AA Baikov Inst Met & Mat Sci, 49 Leninskiy Prospect, Moscow 119334, RussiaRussian Acad Sci, AA Baikov Inst Met & Mat Sci, 49 Leninskiy Prospect, Moscow 119334, Russia
Botvina, L. R.
;
Tyutin, M. R.
论文数: 0引用数: 0
h-index: 0
机构:
Russian Acad Sci, AA Baikov Inst Met & Mat Sci, 49 Leninskiy Prospect, Moscow 119334, RussiaRussian Acad Sci, AA Baikov Inst Met & Mat Sci, 49 Leninskiy Prospect, Moscow 119334, Russia
机构:
Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Kamali, Negar
;
Tehrani, Niloofar
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h-index: 0
机构:
Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Tehrani, Niloofar
;
Mostavi, Amir
论文数: 0引用数: 0
h-index: 0
机构:
Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Mostavi, Amir
;
Chi, Sheng-Wei
论文数: 0引用数: 0
h-index: 0
机构:
Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Chi, Sheng-Wei
;
Ozevin, Didem
论文数: 0引用数: 0
h-index: 0
机构:
Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA
Ozevin, Didem
;
Indacochea, J. Ernesto
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h-index: 0
机构:
Univ Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USAUniv Illinois, Dept Civil & Mat Engn, 842 W Taylor St, Chicago, IL 60607 USA