Kinematics Simulation of the Cardan Shaft for Investigation of the Cardan Error in Catia V5

Hajdu, Štefan; Rolník, Ladislav; Švoš, Juraj

doi:10.1515/rput-2016-0031

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…The absence of all high-frequency lines characterizes an undamaged bearing frequency spectrum, and only order-based ground levels of system-immanent lines are present. Examples of such frequencies are 1st-order frequencies, caused by imbalance, and 2nd-order frequencies, caused by a Cardan joint error [27], which indicate looseness or a misalignment [28]. More severe bearing faults-stages 3 and 4-show lower frequency phenomena based on order-correlated phenomena like the ball passing frequency on the outer race (BPFO), the ball passing frequency on the inner race (BPFI), the ball spin frequency (BSF), and the fundamental train frequency (FTF) that are related to the movement of the cage rather than on uncorrelated wideband spectral phenomena [26].…”

Section: Bearing Failure Detection In Vibration Datamentioning

confidence: 99%

Section: Bearing Failure Detection In Vibration Datamentioning

confidence: 99%

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Evaluation of a Condition Monitoring Algorithm for Early Bearing Fault Detection

Gruber,

Fuchs,

Bader

2024

Sensors

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Roller bearings are critical components in various mechanical systems, and the timely detection of potential failures is essential for preventing costly downtimes and avoiding substantial machinery breakdown. This research focuses on finding and verifying a robust method that can detect failures early, without creating false positive failure states. Therefore, this paper introduces a novel algorithm for the early detection of roller bearing failures, particularly tailored to high-precision bearings and automotive test bed systems. The featured method (AFI—Advanced Failure Indicator) utilizes the Fast Fourier Transform (FFT) of wideband accelerometers to calculate the spectral content of vibration signals emitted by roller bearings. By calculating the frequency bands and tracking the movement of these bands within the spectra, the method provides an indicator of the machinery’s health, mainly focusing on the early stages of bearing failure. The calculated channel can be used as a trend indicator, enabling the method to identify subtle deviations associated with impending failures. The AFI algorithm incorporates a non-static limit through moving average calculations and volatility analysis methods to determine critical changes in the signal. This thresholding mechanism ensures the algorithm’s responsiveness to variations in operating conditions and environmental factors, contributing to its robustness in diverse industrial settings. Further refinement was achieved through an outlier detection filter, which reduces false positives and enhances the algorithm’s accuracy in identifying genuine deviations from the normal operational state. To benchmark the developed algorithm, it was compared with three industry-standard algorithms: VRMS calculations per ISO 10813-3, Mean Absolute Value of Extremums (MAVE), and Envelope Frequency Band (EFB). This comparative analysis aimed to evaluate the efficacy of the novel algorithm against the established methods in the field, providing valuable insights into its potential advantages and limitations. In summary, this paper presents an innovative algorithm for the early detection of roller bearing failures, leveraging FFT-based spectral analysis, trend monitoring, adaptive thresholding, and outlier detection. Its ability to confirm the first failure state underscores the algorithm’s effectiveness.

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Section: Bearing Failure Detection In Vibration Datamentioning

confidence: 99%

Section: Bearing Failure Detection In Vibration Datamentioning

confidence: 99%

Evaluation of a Condition Monitoring Algorithm for Early Bearing Fault Detection

Gruber,

Fuchs,

Bader

2024

Sensors

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“…Kishore ve diğer., (2016) belirli bir kullanım koşulu için farklı malzemelere sahip kardan milli bağlanlantıların tasarımı ve analizini gerçekleştirmişlerdir [13]. Hadju ve diğer., (2016) kardan mili katı modeli üzerinden mafsal kinematiğinin simülasyonu yaparak hız düzgünsüzlüğünü incelemişlerdir [14]. Cardozo ve Weber, (2018) mafsal kinematiği ve kuvvet analizinin sonuçlarına dayanarak sabit hız mafsalları için genelleştirilmiş formul geliştirmişlerdir [15].…”

Section: Introductionunclassified

Taşıtlarda Üç Mafsallı Moment İletim Performansının Kinematik Analizi

KARAOĞLAN,

KURALAY

2024

DEUFMD

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Özellikle uzun aks aralığına sahip taşıtlarda moment iletiminin kesintisiz ve hız düzgünsüzlüğünün minimum olması için iki mafsala sahip tek kardan mili yerine parçalı şekilde üç mafsala sahip iki kardan milinin kullanımı gerekmektedir. Bu çalışmada, üç mafsallı tahrik iletim hattına sahip bir taşıtın moment iletim performansı, çeşitli bağlantı yükseklikleri ve mil açılarına göre gerçekleştirilen kinematik analizlerle belirlenmiştir. Bu amaçla öncelikle teorik olarak üç farklı tahrik bağlantı alternatifi için hesaplamalar yapılmıştır. Ayrıca ilk alternatif için bulunan sonuçlar, kardan mili test düzeneği üzerinden alınan sonuçlarla karşılaştırılarak, sonuçların doğrulanması gerçekleştirilmiştir. Her üç tasarım için giriş dönüş açısına bağlı kardan mili çıkış dönüş açısı değişimleri hesaplanmıştır. Bu çalışma ile üç mafsallı tahrik iletim hattına sahip araçlarda, orta mafsal konumu ve bağlantı açılarının değişimine bağlı olarak açısal hız değişimleri incelenerek kullanıcılara hız düzgünsüzlüğü düşük ve verimli bir tahrik iletim hattı tasarımı için örnek oluşturulması amaçlanmıştır.

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The effect of surface roughness and carburized depth on wear resistance in 16MnCr5 case hardening steel

Baykara,

Atik

2024

ILT

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Purpose Today, wear and tear is a metaphor whose cost cannot be ignored by real sector. For this reason, many sectoral and academic studies are carried out to minimize the wear effect. This study aims to create a perspective against wear problems for the automotive industry as well. Design/methodology/approach The 16MnC5 material, which is used as the U-joint material in the powertrain of the automotive industry, was subjected to heat treatment such as normalization and carburization at certain temperatures and duration. By subjecting the resulting carbide thickness to the abrasion process, the maximum effective heat treatment parameters against wear were determined. Findings It has been determined that the ideal cementation condition for 16MnCr5 steel to be used in the wear system is carburized samples at 900 °C for 3.5 h with a hardness depth of 1.04 mm. Originality/value The variation in which the surface hardness thickness and surface roughness obtained by different heat treatment variations of the U-joint part, which is one of the cardan shaft components that provide power transmission of heavy commercial vehicles, show the best wear resistance, were investigated. As a result of this study, the study is to prevent the waste of limited materials in the world and to reduce the repair and maintenance costs of commercial vehicles. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0152/

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Kinematics Simulation of the Cardan Shaft for Investigation of the Cardan Error in Catia V5

Cited by 3 publications

References 1 publication

Evaluation of a Condition Monitoring Algorithm for Early Bearing Fault Detection

Evaluation of a Condition Monitoring Algorithm for Early Bearing Fault Detection

Taşıtlarda Üç Mafsallı Moment İletim Performansının Kinematik Analizi

The effect of surface roughness and carburized depth on wear resistance in 16MnCr5 case hardening steel

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