Degradation modeling and monitoring of machines using operation-specific hidden Markov models
ME Cholette, D Djurdjanovic - IIE Transactions, 2014 - Taylor & Francis
In this article, a novel data-driven approach to monitoring of systems operating under
variable operating conditions is described. The method is based on characterizing the …
variable operating conditions is described. The method is based on characterizing the …
Wavelet and scalar indicator based fault assessment approach for rolling element bearings
D Paliwal, A Choudhury, G Tingarikar - Procedia materials science, 2014 - Elsevier
A failed rolling element bearing when removed from a machine mostly displays cracks and
flaking. Identification of such defects along with the severity of damage may avoid …
flaking. Identification of such defects along with the severity of damage may avoid …
Identification of faults through wavelet transform vis-à-vis fast Fourier transform of noisy vibration signals emanated from defective rolling element bearings
D Paliwal, A Choudhur, T Govandhan - Frontiers of Mechanical …, 2014 - Springer
Fault diagnosis of rolling element bearings requires efficient signal processing techniques.
For this purpose, the performances of envelope detection with fast Fourier transform (FFT) …
For this purpose, the performances of envelope detection with fast Fourier transform (FFT) …
[HTML][HTML] An approach for tool health assessment using the Mahalanobis-Taguchi system based on WPT-AR
A real-time tool health assessment has a significant implication on reliable machining
operations. This paper proposes a health assessment method for tools in milling machine …
operations. This paper proposes a health assessment method for tools in milling machine …
[PDF][PDF] Faults diagnosis for vibration signal based on HMM
S Qiang, S Peng, F Changjian - Sensors & Transducers, 2014 - sensorsportal.com
Faults behaviors of automotive engine in running-up stage are shown a multidimensional
pattern that evolves as a function of time (called dynamic patterns). It is necessary to identify …
pattern that evolves as a function of time (called dynamic patterns). It is necessary to identify …
A Novel Approach for Detection of Bearing Defects from Noisy Vibration Signal
D Paliwal, A Choudhury, T Govardhan… - Applied Mechanics …, 2014 - Trans Tech Publ
Vibration signal of a defective bearing carries fault related information. The aim of this paper
is to develop a signal processing methodology that identifies the presence of defect from …
is to develop a signal processing methodology that identifies the presence of defect from …