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Article
Design And Manufacturing of a Pin-on-Disk wear Testing Apparatus
تصميم وتصنيع جهاز أختبار ألبلى دبوس على قرص

Author: Hussein Mohammed Ali حسين محمد علي
Journal: kirkuk university journal for scientific studies مجلة جامعة كركوك - الدراسات العلمية ISSN: 19920849 / 26166801 Year: 2017 Volume: 12 Issue: 4 Pages: 77-108
Publisher: Kirkuk University جامعة كركوك

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Abstract

The present work is about a design and manufacturing process of a pin-on-disk apparatus which is used as a test method for determining the wear of any two sliding materials. The aim of this paper is to give an information about the design steps and manufacturing procedure for the pin-on-disk apparatus and to discuss the problems follows the design and manufacturing process. It also gives information about wear testing process. Different types of experiments were done with several different test specimens to be able to make a comparison between wear test results of this work and that of another experiment found in literatures. It was concluded, that a pin-on-disk wear testing apparatus which is working properly is successfully designed and manufactured. The results of the wear testing obtained by the apparatus which have been designed and manufactured in this work shows that the wear of the test specimen increases as the speed (rpm) of the motor increases. And also, as the sliding distance increases,the wear decreases at constant load and speed.

العمل الحالي هو حول تصميم و عملية تصنيع جهاز دبوس على القرص الذي يستخدم كطريقة اختبار لتحديد ألبلى لأي اثنين من المواد المنزلقة. أن الهدف من هذا البحث هو إعطاء معلومات عن خطوات التصميم وطريقة تصنيع جهاز دبوس على القرص ومناقشة المشاكل التي تتبع عملية التصميم والتصنيع. كما أنه يعطي معلومات حول عملية اختبار البلى. وقد أجريت أنواع مختلفة من التجارب مع عدة عينات اختبار مختلفة لتكون قادرة على إجراء مقارنة بين نتائج اختبار ألبلى لهذا العمل وتجارب أخرى وجدت في البحوث. وخلص إلى أن جهاز اختبار ألبلى دبوس على القرص الذي يعمل بشكل صحيح تم تصميمها وتصنيعها بنجاح. وقد أظهرت نتائج اختبار ألبلى الذي تم الحصول عليها من قبل الجهاز والتي تم تصميمها وتصنيعها في هذا العمل أن بلى عينة الاختبار يزيد مع سرعة دوران (دورة/دقيقة) ألمحرك. وأيضا، مع زيادة مسافة ألأنزلاق، كما أن ألبلى يقل عند ثبوت الحمل والسرعة.


Article
Optimization of Dry Sliding Wear Process Parameters for Al-Mg-Si Hybrid Composites Using Taguchi Method

Authors: Israa A. Kadir --- Hanan K. Azeez
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 7 Part (A) Engineering Pages: 812-822
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

The aim of the presents study was to investigates the influence of different sliding velocity 1.4, 2.8, 4.2 m/sec, applied load 5, 10, N and time 10, 20, 30 min on wear rate of Al-Mg-Si alloy reinforced with varying weight fraction of TiO₂/SiC 1.5:0 ,3:0 , 4.5:0 , 0:1.5 , 0:3 , 0:4.5 , 1.5:1.5 , 3:3 , 4.5:4.5 wt.% with the same particle size (>75μm) by using pin-on-disk techniques. In this research Al-Mg-Si alloy TiO₂/SiC hybrid composites was prepared by vortex technique. The primary objective is to use taguchi method for predicting the better parameter that give the highest wear resistance. A L9 orthogonal array was selected for each present to analysis of data and use ANOVA to determine parameters significantly influencing the wear rate of hybrid composite. Optical microscope and SEM with EDS examination were utilized to study the worn surface. The experimental and analytical results showed that the taguchi method was successful in predicting the parameters that give the highest properties and the volume fraction was the most influential parameter on the wear rate. The results demonstrated that when the applied load and time increased the wear rate increasing, but when the sliding velocity increased the wear rate decreasing and showed the minimum wear in hybrid composite with 4.5% reinforcement this observed with highest ratio of S/N 156.787.

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