Maintenance of a reducer by vibration and wear particles analysis

Gonçalves, Aparecido Carlos; Cunha, Rodrigo Carvalho; Lago, Daniel Fabiano

doi:10.1108/13552510610667156

Cited by 10 publications

(8 citation statements)

References 5 publications

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“…There are two ways to identify component wear in tribology, direct and indirect analysis (Blau, 2006). While Gonçalves et al (2006) advocated oils analysis combined engine vibration, this research analyzes the direct indication of wear provided by oil sample analysis. Furthermore, Blau (2006) determined that oil analysis can be divided in two major areas of analysis, chemical and particle analysis.…”

Section: Methodsmentioning

confidence: 99%

Engine oil degradation analysis of construction equipment in Latin America

Azevedo¹,

Olsen

2019

JQME

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Purpose The purpose of this paper is to determine and describe the effect of oil degradation on the engine of a 20-ton class excavator operating in Latin America. Design/methodology/approach The research parameters include: a specific engine class and equipment, the John Deere PowerTech Plus 6068 Tier 3 diesel engine that powers the 20-ton class excavator; identical OSA3 oil analysis laboratory equipment in 11 target countries in Latin America was employed to analyze oil samples; and the same sampling scope and method were followed for each oil sample. Findings The research results indicated that at 500 h of use, 73.4 percent of the oil sample results indicated that soot accumulation was a significant problem. When associating the engine oil contamination with the environment risk drivers: altitude and diesel quality have the greatest impact on iron readings; bio-diesel impacts copper; and precipitation and poor diesel quality are associated with silicon levels. Practical implications Due to diverse machine operating conditions, research offers an accurate global representation. Because there is an exponential count of particles as oil use approaches 250 h, the interval of engine maintenance (oil change) for machinery operating under similar conditions should not exceed 250 h of use. Originality/value The main contribution of this paper will help machinery final users and manufacturers to implement mitigation strategies to improve engine durability in countries with similar operating conditions.

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Section: Methodsmentioning

confidence: 99%

Engine oil degradation analysis of construction equipment in Latin America

Azevedo¹,

Olsen

2019

JQME

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“…For Gonçalves et al 8 , the flash point serves as a measurement of the lubricant oil contamination, as the higher the fuel oil contamination, the lower the flash point will be relative to new oil.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Contamination in Lubricant by Biodiesel in a Pin-On-Disk Equipment

Cuerva

Gonçalves²,

Albuquerque³

et al. 2022

Mat. Res.

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The introduction of biodiesel to commercial diesel is being increased every year. The need to check this addition to the engine and lubricant is important for automakers and internal combustion engine manufacturers. The oil analysis technique is a type of predictive maintenance, done by collecting oil from equipment and analyzing it later in the laboratory, or by analyzing it directly and continuously in on-line systems. In internal combustion engines, all parts have a pre-established service life, longer or shorter, according to the specific function assigned to it. By analyzing the oil, the condition of these parts can be monitored. The oils analysis reveals the first signs of wear of a component. The identification is made based on the study of the number of particles, size, shape and composition thereof, present in the lubricant samples, which provide accurate information about the conditions of the moving surfaces without the need to disassemble the assembly to which these parts belongs. In this work a lubricant contamination by biodiesels were made to simulate possible scenarios within an internal combustion engine.The lubricant recommended by an engine manufacturer was "contaminated" with commercial diesel and with different percentages and types of biodiesel. After this "contamination" they were placed in a pin on disk device under certain conditions.Through the analyzes of the lubricants extracted from the Pin on disk Equipment after the tests, some analysis were carried out in order to study the effects of using biodiesel in the internal combustion engine.These analyzes consisted of Flash point, analytical ferrography, monitoring of ferrous particles generated, viscosity, viscosity index, basicity index and X-ray spectrometry.Among the results obtained it is observed that for a 5% contamination of animal biodiesel there was an increase in the viscosity index. Conversely, the contamination of 5% of animal + vegetable biodiesel decreased the viscosity index in relation to Diesel B5. We also found that these biodiesel additions were not detrimental to the engine and lubricant at the mix ratios and test conditions used.

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“…The quantitative analysis of fracture formation and propagation is quite di cult and depends on several parameters. Even with such complexity, it is critical to foresee failures involving this process, especially regarding the overall manufacturing sector (GONÇALVES et al, 2006;GONÇALVES e PADOVESE, 2011;GONÇALVES e PADOVESE, 2012). Equipment maintenance has changed over time as a result of the implementation of numerous concepts and techniques of intervention, such as corrective, preventive, and predictive maintenance.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Defect Behavior in Cylindrical Spur Gears Using Condition Monitoring

Gonçalves

2022

Preprint

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The catastrophic failure of gearboxes results in production losses and maintenance costs. The mechanical component that most fails in gearboxes are the gears. These failures usually occur before the end of useful life projected by criteria of failure standards, due to teeth defects as severe wear and cracking. The condition monitoring of gearboxes evaluates parameters which can indicate the mechanism of failure in process in the gear. The most commonly used monitoring techniques of gearboxes are vibration analysis and lubricant analysis. The experimental analysis consists of the evaluation of an experimental workbench under two conditions: notched gear for crack simulation and; gear with variation of notch for simulation of a crack propagation. The workbench condition was evaluated using vibration signal treatment techniques such as Time Synchronous Averaging, Residual Signal, Demodulation, Statistical Moments, Crest Factor and Statistical Analysis using Beta Probability Density Function .The vibration techniques were adequate to identify the presence of an evolution of the notch. Statistical analysis using Beta PDF was useful to identify the degradation of a tooth as the notch size evolved.

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Maintenance of a reducer by vibration and wear particles analysis

Cited by 10 publications

References 5 publications

Engine oil degradation analysis of construction equipment in Latin America

Engine oil degradation analysis of construction equipment in Latin America

Analysis of the Influence of Contamination in Lubricant by Biodiesel in a Pin-On-Disk Equipment

Investigation of Defect Behavior in Cylindrical Spur Gears Using Condition Monitoring

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