کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5436649 | 1509555 | 2016 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A physical model and constitutive equations for complete characterization of S-N fatigue behavior of metals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A physical model and constitutive equations for complete characterization of S-N fatigue behavior of metals A physical model and constitutive equations for complete characterization of S-N fatigue behavior of metals](/preview/png/5436649.png)
چکیده انگلیسی
The manuscript presents a new approach to the characterization of metal fatigue-the successful development of physically based law for metal fatigue from the macroscopic behavior of crack growth in CCT and SEN specimens (left). The developed equations describe quite accurately a large number of fatigue data (right) including ultra-high-cycle fatigue, effects of several fatigue-strengthening mechanisms and the effects of mean stress on the fatigue limit. It mathematically supports the existence of asymptotic nature of the endurance limit in fatigue, helping to resolve a long-standing debate of whether there exists an endurance limit or not, in fatigue. The work also provides a single master function that enables predictions of S-N behavior for any mean stress, on the basis of fully reversed fatigue data. Remarkably, unlike the empirical Goodman/Gerber equations in fatigue, the mean stress dependence is shown to naturally evolve from the behavior of material/microstructure itself, without any empiricism.219
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 121, December 2016, Pages 85-103
Journal: Acta Materialia - Volume 121, December 2016, Pages 85-103
نویسندگان
K.S. Ravi Chandran,