کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7898122 1510131 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantifying the Accuracy of Fractographic Strength Estimates in Silicate Glasses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Quantifying the Accuracy of Fractographic Strength Estimates in Silicate Glasses
چکیده انگلیسی
Fractographers' qualitative measurements of the mirror radii are routinely used to estimate the fracture strength of brittle materials. Different imaging methods, magnifications, and observers' subjective length-estimates are expected to affect the strength predictions, but their relative influence was never quantified prior to this work. In this manuscript, 31 aluminosilicate glass plates were fractured by four-point bending (strength range: 71-117 MPa) and eight observers independently estimated the mirror radii per ASTM Standard C1678-10. The effects of magnifications, imaging methods, and observers were then quantified. It was found that these effects account for up to 6% of the estimate's error (i.e., the estimate bias) on the average. Additionally, random variations in the range of ±3% to ±4% are expected. Furthermore, it was shown that using the fracture surface's profilometry scans, aided by the analytical knowledge of the shape of the mirror-mist boundary, could eliminate the bias and significantly improve the accuracy of predictions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 38, Issue 10, August 2018, Pages 3643-3649
نویسندگان
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