Sliding contact performance of injection moulded and selective laser sintered polyamide under dry and lubricated conditions

Author:

Bharti Sarita,Selvaraj Senthilvelan

Abstract

Purpose This paper aims to understand the effect of the manufacturing process on the frictional and wear performance of polyamide. Design/methodology/approach Pin specimens were manufactured through injection moulding (IM) and selective laser sintering (SLS) manufacturing processes. The friction and wear performance was evaluated using a pin-on-disc configuration under dry and oil-lubricated conditions. The friction coefficient, wear resistance and surface temperature of specimens were measured, and failure morphology analysis was carried out to understand the mechanism. Findings SLS material exhibited significantly less friction, wear and surface temperature than IM material under dry conditions. Reduced ductility due to the sintering contributes to reduced friction, wear and heat generation. Under the dry condition, IM material exhibited plastic flow and roll-shaped deformation, whereas SLS material exhibited only local degradation due to its lesser ductility. Lubrication reduced friction and temperature for both SLS and IM materials. The porous nature of the sintered surface absorbed the lubricant and released it while sliding, which is confirmed by the brown-coloured wear track. Originality/value The study provides valuable input to the designers on the sliding contact performance of commonly adopted two different manufacturing processes of polymers; IM and SLS manufacturing.

Publisher

Emerald

Subject

Surfaces, Coatings and Films,General Energy,Mechanical Engineering

Reference20 articles.

1. Mechanical and microstructural properties of nylon-12/carbon black composites: selective laser sintering versus melt compounding and injection molding;Composites Science and Technology,2011

2. Effect of surface orientation on the tribological properties of laser sintered polyamide 12;Polymer Testing,2015

3. Influence of surface characteristics on fatigue behaviour of laser sintered plastics;Rapid Prototyping Journal,2012

4. The effect of different metallic counterface materials and different surface treatments on the wear and friction of polyamide 66 and its composite in rolling–sliding contact;Wear,2003

5. Investigation of mechanical and physical properties of several industrial rubbers;Materials & Design,2004

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3