کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
617260 1454983 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison between methods for measuring wear in brake friction materials
ترجمه فارسی عنوان
مقایسه روش هایی برای اندازه گیری سایش در مواد اصطکاک ترمز
کلمات کلیدی
ترمز، سایش کشویی، اسکنر لیزری سه بعدی، از دست دادن توده، از دست رفتن ضخامت، توزین
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی
Three different techniques for measuring wear in brake pads are compared: a gravimetric method (electronic balance), a linear measuring touch probe method, and a three-dimensional laser scanning method. Laboratory-scale wear tests were performed on two different types of brake friction materials: a semi-metallic (SM) and a non-asbestos organic (NAO). All three techniques were able to show clear differences in the wear rates of the materials selected for study. It was observed that choosing only a few points of measurement in the thickness determination using a touch probe can lead to significant errors. These errors were higher than those caused by moisture absorption effects when using the gravimetric method. The laser scanning method proved adequate for investigating the wear profiles produced by braking tests. Results from the tests showed that SM material exhibits a higher coefficient of friction and wear rate than the NAO material. An increase of the contact pressure resulted in increased wear rates for both SM and NAO materials. The ratio between volume loss and mass loss also increased when contact pressure was higher indicating that samples had suffered from compressive deformation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 319, Issues 1–2, 15 November 2014, Pages 191-199
نویسندگان
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