An investigation on the thermal and wear behavior of polymer based spur gears

This study investigates the potential of three different thermoplastic materials viz. Acrylonitrile Butadiene Styrene (ABS), High Density Polyethylene (HDPE) and Polyoxymethylene (POM) to be used in plastic gearing applications. The gears are manufactured by injection molding process. Thermal and we...

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Bibliographic Details
Published in:Tribology international 2018-02, Vol.118, p.264-272
Main Authors: Singh, Prashant Kumar, Siddhartha, Singh, Akant Kumar
Format: Article
Language:English
Subjects:
ABS resins
Acrylonitrile butadiene styrene
Failure
Failure modes
Fatigue failure
Gear teeth
Gears
High density polyethylenes
Injection molding
Molding (process)
Polymer gears
Polymers
Spur gears
Surface temperature
Torque
Wear
Wear rate
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Summary:This study investigates the potential of three different thermoplastic materials viz. Acrylonitrile Butadiene Styrene (ABS), High Density Polyethylene (HDPE) and Polyoxymethylene (POM) to be used in plastic gearing applications. The gears are manufactured by injection molding process. Thermal and wear behavior of these gears are examined at different torque levels of 0.8, 1.2, 1.6 and 2.0 Nm along with different rotational speeds of 600, 800, 1000 and 1200 rpm. Also, steady state analysis of the gears is carried out at a torque of 1.4 Nm and a rotational speed of 900 rpm to measure the reduction in the gear tooth, durability and failure modes occurring in these gears. ABS gear fails due to excessive wear of the teeth whereas HDPE gear failure is caused by the cracking at the root of gear teeth. ABS and HDPE gears complete 0.5 and 1.1 million cycles, respectively before failure whereas POM gear completes 2 million cycles without any sign of failure. •Thermal and wear behavior of polymer based gears have been investigated.•Three different materials viz. ABS, HDPE and POM are used for manufacturing of gears.•Performance of these gears has been compared to verify their potential in gear applications.•Durability and failure modes occurring in these gears have also been investigated.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2017.10.007