Parameters influencing the running-in and long-term tribological behaviour of polyamide (PA) against polyacetal (POM) and steel

Pogačnik, A.; Kalin, Mitjan

doi:10.1016/j.wear.2012.04.017

Cited by 66 publications

(39 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because POM has high mechanical strength and unique properties such as excellent abrasion resistance, low friction coefficient, fatigue resistance, noiseless performance, lightweight, oil-less conditions, mouldability, higher melting point and low cost [1][2][3][4][5][6][7][8][9][10]. As such POM is considered as a major class of tribopolymers widely used in wear applications.…”

Section: Introductionmentioning

confidence: 99%

Wear Characterizations of Polyoxymethylene (POM) Reinforced with Carbon Nanotubes (POM/CNTs) Using the Paraffin Oil Dispersion Technique

Yousef

Visco

Galtieri

et al. 2015

JOM

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Wear Characterizations of Polyoxymethylene (POM) Reinforced with Carbon Nanotubes (POM/CNTs) Using the Paraffin Oil Dispersion Technique

Yousef

Visco

Galtieri

et al. 2015

JOM

View full text Add to dashboard Cite

“…In the literature and standards [2,21], there are different values for the coefficient of friction for the same pairs of materials.…”

Section: Calculation Of Polymer Gear Temperaturementioning

confidence: 99%

An accelerated multilevel test and design procedure for polymer gears

Pogačnik

Tavčar

2015

Materials & Design (1980-2015)

View full text Add to dashboard Cite

“…However, with a large number of different polymer materials available, gear testing is necessary to determine the performance of modern polymer materials in gears. Material tribological characteristics belong to the material pair in contact, and not to a single polymer material (Pogačnik, 2012). This makes testing even more extensive.…”

Section: Introductionmentioning

confidence: 99%

“…Polyamide (PA) is a very useful material for the gear applications due to very favorable mechanical properties (especially with added glass fibers) which are retained even at elevated temperatures (Rao, 1998), (Holmgren, 2014). Nevertheless, the coefficient of friction of the PA polymer is high (Pogačnik, 2012), (Mao, 2009). Therefore, in this research we investigated the tribological behavior of different gear combinations made from PA6 and PA66 with or without glass fiber reinforcement and PTFE lubricant addition.…”

Section: Introductionmentioning

confidence: 99%

Accelerated lifetime testing of reinforced polymer gears

Tavčar

Grkman

Duhovnik

2018

JAMDSM

View full text Add to dashboard Cite

The main advantages of polymer gears compared to metal gears are low manufacturing costs for mass production, vibration damping, and there is no need for a lubricant. In the literature and guidelines, the allowable gear endurance limits for bending and contact stresses are mainly given for polyamides (PA) and polyacetals (POM). A large number of suitable polymer gear materials is available, but the standards offer little support for the lifetime calculations of polymer gears from other materials. Therefore, the testing of gear geometry and materials combinations cannot be avoided in the design of an optimal gear drive. However, gear testing is very time-consuming and expensive, especially when testing several different material combinations in different testing conditions. By applying the upgraded accelerated testing procedure, gear test time and costs can decrease significantly. Determination of the gear temperature during meshing is needed for the precise calculation of plastic gears. The presented temperature calculation model is corrected and improved with input parameters, which were determined from the test results. Accelerated tests were conducted on different combinations of reinforced and unreinforced commercially available materials: PA6, PA66, POM and PPS. Glass and carbon fiber were used for reinforcement. The research goal was characterization of different material pairs with the coefficient of friction, time strength, wear, and the failure mechanism in relation to load cycles and load level. The paper's contribution are some general guidelines for selecting polymer material for gears, such as fiber reinforcement improves the allowable stress level at up to a few million load cycles; unreinforced polymers are better for a higher number of load cycles. Also, PTFE -the internal lubricant significantly reduces a coefficient of friction if added to PA polymers, and is less efficient in combination with POM.

show abstract

Parameters influencing the running-in and long-term tribological behaviour of polyamide (PA) against polyacetal (POM) and steel

Cited by 66 publications

References 17 publications

Wear Characterizations of Polyoxymethylene (POM) Reinforced with Carbon Nanotubes (POM/CNTs) Using the Paraffin Oil Dispersion Technique

Wear Characterizations of Polyoxymethylene (POM) Reinforced with Carbon Nanotubes (POM/CNTs) Using the Paraffin Oil Dispersion Technique

An accelerated multilevel test and design procedure for polymer gears

Accelerated lifetime testing of reinforced polymer gears

Contact Info

Product

Resources

About