کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1580859 | 1514833 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Contact strength and crack formation in monolithic ceramic materials
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The paper deals with the strength meaurement and characterization of strength data of monolithic Si3N4 and SiC ceramics using unconventional contact tests between opposite rollers and opposite spheres. The results are compared to the results of conventional four-point-bending test. Ceramographic and fractographic methods are used for the characterization of strength degrading defects represented by processing flaws and by cracks of different types arising during the loading. The processing flaws influenced the Weibull parameters mainly in the bending mode, and the strength and its scatter in contact modes was influenced by lateral, median and contact end cracks, originating during the contact test using rollers, and by cone cracks originating during the contact test using spheres. The influence of the radius of the spheres on length and an angle of the cone cracks has been determined too.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 527, Issues 4â5, 15 February 2010, Pages 1179-1184
Journal: Materials Science and Engineering: A - Volume 527, Issues 4â5, 15 February 2010, Pages 1179-1184
نویسندگان
Lucia Hegedűsová, Alexandra KovalÄÃková, Ladislav Ceniga, Ján Dusza,