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The purpose of this paper is to extract features from vibration signals measured from induction motors subjected to accelerated aging of bearings by fluting tests.

Aging tests were performed according to IEEE test procedures. The data acquisition involved the measurement of vibration signals using accelerometers that were installed on the bearings and on the motor casing. In this application, only two accelerometers, which were placed near the process end of the motor bearing, are used for data analysis and feature extraction studies. After the data collection, information from the two sensors was combined using simple sensor fusion method under the linearity conditions, and then spectral analysis and time‐scale analysis were performed. The fused vibration signal is decomposed into several scales using continuous wavelet transform (CWT) and its first scale is used to indicate the bearing degradation.

Bearing damage characterization was determined between 2‐4 kHz and some specific frequencies were calculated as harmonics of the bearing characteristic frequencies.

The bearing damage characteristics used in this study is occurred by the experimental study. In terms of the methodology, the use of the CWT shows the fault characteristics from the initial case.

The experimental study and data acquisition are based on the accelerated aging of the motor bearings. Hence, the real aging is represented by the accelerated one. But, this situation reflects same properties of the aging occurred in industrial environments. The methodology is also applicable to the hardware application.

There are two important aspects of this research: the experimental study and the application of CWT to get the potential defects, which will appear as a failure in future, from the healthy case of the motor bearings.

Today, the need for renewable energy is rising steadily. Various steps are being taken by nations to address the rising need. The developments occurring in proportion to the industrial structures and economic levels of the countries, these efforts, the political structure of the country, some established patterns from the past, and many other external factors affect the use of renewable energy and therefore sustainable development, which has been one of the most important agendas since the early 1990s. In this study, it is examined whether certain characteristics of the Scandinavian Welfare Model affect the background of this successful image of Finland, Denmark, and Sweden, which rank in the top three positions in both the Global Energy Innovation Index and the Sustainable Development Report. As a result, although the use of fossil fuels increases the ecological footprint in the Scandinavian countries, which are evaluated as in the rest of the world, continuing the principles of innovation, trust, equality, openness, and sustainability with determination, the Nordic approach has not departed from the welfare state principle compatible with its own codes, unlike the transformations experienced by other welfare regimes, and has become a distinctive factor.