A sparse multivariate time series model-based fault detection method for gearboxes under variable speed condition

Y Chen, MJ Zuo - Mechanical Systems and Signal Processing, 2022 - Elsevier
Gearboxes often operate under variable speed condition which makes the collected
vibration signal, a widely employed type of condition monitoring data, becomes non …

Inspection robotic UGV platform and the procedure for an acoustic signal-based fault detection in belt conveyor idler

H Shiri, J Wodecki, B Ziętek, R Zimroz - Energies, 2021 - mdpi.com
Belt conveyors are commonly used for the transportation of bulk materials. The most
characteristic design feature is the fact that thousands of idlers are supporting the moving …

Thermal imaging study to determine the operational condition of a conveyor belt drive system structure

D Szurgacz, S Zhironkin, S Vöth, J Pokorný… - Energies, 2021 - mdpi.com
The paper discusses the results of a study carried out to determine the thermal condition of a
conveyor power unit using a thermal imaging camera. The tests covered conveyors in the …

An informative frequency band identification framework for gearbox fault diagnosis under time-varying operating conditions

S Schmidt, PS Heyns, KC Gryllias - Mechanical Systems and Signal …, 2021 - Elsevier
The application of informative frequency band identification methods makes it possible to
enhance weak damage components in the vibration signals acquired from rotating …

Infogram performance analysis and its enhancement for bearings diagnostics in presence of non-Gaussian noise

J Hebda-Sobkowicz, R Zimroz, A Wyłomańska… - … Systems and Signal …, 2022 - Elsevier
Local damage detection in rotating machines is a well-established field of study, however,
some new challenges have recently appeared. They are associated with the presence of …

Fault identification of direct-shift gearbox using variational mode decomposition and convolutional neural network

R Kumar, P Kumar, G Vashishtha, S Chauhan… - Machines, 2024 - mdpi.com
The direct-shift gearbox is widely used in many applications, such as automotive and
aerospace, due to its large transmission ratio and high transmission efficiency. Rough and …

Local damage detection in rolling element bearings based on a single ensemble empirical mode decomposition

Y Berrouche, G Vashishtha, S Chauhan… - Knowledge-Based …, 2024 - Elsevier
Abstract A Single Ensemble Empirical Mode Decomposition (SEEMD) is proposed to locate
the damage in rolling element bearings. The SEEMD method eliminates the need for adding …

Dynamic Analysis for the Hydraulic Leg Power of a Powered Roof Support

D Szurgacz - Energies, 2021 - mdpi.com
This paper presents the results of a study conducted to determine the dynamic power of a
hydraulic leg. The hydraulic leg is the basic element that maintains the position of a powered …

A step-by-step procedure for tests and assessment of the automatic operation of a powered roof support

D Szurgacz, S Zhironkin, M Cehlár, S Vöth, S Spearing… - Energies, 2021 - mdpi.com
A powered longwall mining system comprises three basic machines: a shearer, a scraper
(longwall) conveyor, and a powered roof support. The powered roof support as a component …

Dependency measures for the diagnosis of local faults in application to the heavy-tailed vibration signal

J Nowicki, J Hebda-Sobkowicz, R Zimroz… - Applied Acoustics, 2021 - Elsevier
The extraction of the informative frequency band from the signal with heavy-tailed noise is
introduced to detect local damage. The algorithm for the vibration signal from a bearing …