Gear fatigue life and thermomechanical behavior of novel green and bio-composite materials VS high-performance thermoplastics

Bravo, Alencar; Toubal, Lotfi; Koffi, Demagna; Erchiqui, Fouad

doi:10.1016/j.polymertesting.2016.12.031

Cited by 26 publications

(10 citation statements)

References 32 publications

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“…This bench previously used to estimate the fatigue life gear teeth 3 . Work by Bravo et al 10 shows that the main failure mode of rotating gear made from the same composite is root fatigue. This test bench is chosen to isolate tooth bending and focus on tooth root fatigue as a failure.…”

Section: Methodsmentioning

confidence: 99%

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Fatigue of short‐natural‐fiber‐reinforced high‐density polyethylene: Stochastic modeling of single‐gear‐tooth bending

Blais

Toubal

2021

Fatigue Fract Eng Mat Struct

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A Markov chain model was compared to experimental data in the testing of a natural‐fiber‐reinforced composite material proposed for low‐torque gearing applications. The material is tested on a single gear tooth bench to assess multiple damage measurement methods. The model was coupled to three indices of single gear tooth damage: cracking monitored with a high resolution camera, residual load measured with the fatigue machine load cell, and acoustic emission detected by piezoelectric sensors. The model has predictive skill and contributed to better understanding of how damage to the material evolved during the fatigue tests.

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Section: Methodsmentioning

confidence: 99%

“…Most currently used plastic gears are made of technical plastics, which are more expensive, derived generally from petroleum and not always recyclable. Rotational tests are designed to explore application feasibility and the thermal behavior of the material 4,10 …”

Section: Introductionmentioning

confidence: 99%

Fatigue of short‐natural‐fiber‐reinforced high‐density polyethylene: Stochastic modeling of single‐gear‐tooth bending

Blais

Toubal

2021

Fatigue Fract Eng Mat Struct

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“…This is already the case for the automotive sector, as some companies are carrying out development projects for car interiors using similar materials ( Akampumuza et al, 2017 ). Promising results have been obtained in the development of new composites made entirely from renewable materials, such as polyethylene made from sugar cane, to be used as the matrix, while natural hardwood fibers are used as reinforcement ( Bravo et al, 2015 , 2018 ). These results show where it is possible to consider the use of such thermoplastic composites in applications with very high structural and thermal requirements, such as in mechanical gears.…”

Section: Green Technologies For Conventional Aircraft Projectsmentioning

confidence: 99%

Emissions of future conventional aircrafts adopting evolutionary technologies

Bravo

Vieira

Ferrer

2022

Journal of Cleaner Production

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“…In recent decades, with the rapid development of high-performance engineering plastics [ 1 , 2 ], small-module plastic gear has been widely applied in cutting-edge fields, such as aerospace [ 3 ], medical devices [ 4 ], and automobiles [ 5 ]. Compared with small-module metal gear, small-module plastic gear has obvious advantages, such as self-lubrication, strong shock and vibration resistance, and low noise [ 6 , 7 ]. Micro-injection molding is likely to become the main processing method for small-module plastic gear in the future because it enables production in large quantities [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

An Effective Shrinkage Control Method for Tooth Profile Accuracy Improvement of Micro-Injection-Molded Small-Module Plastic Gears

et al. 2022

Polymers

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An effective method to control the non-linear shrinkage of micro-injection molded small-module plastic gears by combining multi-objective optimization with Moldflow simulation is proposed. The accuracy of the simulation model was verified in a micro-injection molding experiment using reference process parameters. The maximum shrinkage (Y1), volume shrinkage (Y2), addendum diameter shrinkage (Y3), and root circle diameter shrinkage (Y4) were utilized as optimization objectives to characterize the non-linear shrinkage of the studied gear. An analysis of the relationship between key process parameters and the optimization objectives was undertaken using a second-order response surface model (RSM-Quadratic). Finally, multi-objective optimization was carried out using the non-dominated sorting genetic algorithm-II (NSGA-II). The error rates for the key shrinkage dimensions were all below 2%. The simulation results showed that the gear shrinkage variables, Y1, Y2, Y3, and Y4, were reduced by 5.60%, 8.23%, 11.71%, and 11.39%, respectively. Moreover, the tooth profile inclination deviation (fHαT), the profile deviation (ffαT), and the total tooth profile deviation (FαT) were reduced by 47.57%, 23.43%, and 49.96%, respectively. Consequently, the proposed method has considerable potential for application in the high-precision and high-efficiency manufacture of small-module plastic gears.

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Gear fatigue life and thermomechanical behavior of novel green and bio-composite materials VS high-performance thermoplastics

Cited by 26 publications

References 32 publications

Fatigue of short‐natural‐fiber‐reinforced high‐density polyethylene: Stochastic modeling of single‐gear‐tooth bending

Fatigue of short‐natural‐fiber‐reinforced high‐density polyethylene: Stochastic modeling of single‐gear‐tooth bending

Emissions of future conventional aircrafts adopting evolutionary technologies

An Effective Shrinkage Control Method for Tooth Profile Accuracy Improvement of Micro-Injection-Molded Small-Module Plastic Gears

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