Measurement and Real Time Analysis of Local Damage in Wear-and-Fatigue Tests
In rolling fatigue tests the approach of the axes is usually measured once per cycle or for several loading cycles because of the difficulties of processing a large amount of data in multi-cycle testing. The aim of this work was the development and tests of smoothing model for measured by the SZ-01...
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| Format: | Article |
| Language: | English |
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Belarusian National Technical University
2019-06-01
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| Series: | Приборы и методы измерений |
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| Online Access: | https://pimi.bntu.by/jour/article/view/444 |
| _version_ | 1826557384121647104 |
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| author | S. S. Sherbakov |
| author_facet | S. S. Sherbakov |
| author_sort | S. S. Sherbakov |
| collection | DOAJ |
| description | In rolling fatigue tests the approach of the axes is usually measured once per cycle or for several loading cycles because of the difficulties of processing a large amount of data in multi-cycle testing. The aim of this work was the development and tests of smoothing model for measured by the SZ-01 center time series experimental data using wavelet transform.With the help of the SZ center, the frictional moment in the roller/shaft system was measured allowing for studying the change in the coefficient of rolling resistance as a function of the level of the contact and non-contact bending load during wear-fatigue tests. Also the axes approach of the contacting bodies (roller and shaft) was measured at eight points on the raceway circumference in one cycle. This allowed studying the heterogeneity of local damages under conditions of rolling and mechano-rolling fatigue. When developing a software module for smoothing a large amount of experimental data from the test center, various methods of time series smoothing were used: moving average; exponential moving average; wavelet transform and moving average applied to the differences of the wavelet coefficients; wavelet transform and exponential moving average applied to the difference of the wavelet coefficients.The results of numerical simulation showed that the best approximation to the original series was provided by the wavelet transform using an exponential moving average to smooth the differences between the coefficients of the wavelet transform.The use of a software module based on this model in SZ-01 center allowed smoothing the time series characterizing the change of roller and shaft axes approach and torque. |
| first_indexed | 2024-04-10T01:37:49Z |
| format | Article |
| id | doaj.art-2a8bd8ade1b844aba805b1b7352dbfe3 |
| institution | Directory Open Access Journal |
| issn | 2220-9506 2414-0473 |
| language | English |
| last_indexed | 2025-03-14T08:27:44Z |
| publishDate | 2019-06-01 |
| publisher | Belarusian National Technical University |
| record_format | Article |
| series | Приборы и методы измерений |
| spelling | doaj.art-2a8bd8ade1b844aba805b1b7352dbfe32025-03-02T13:03:50ZengBelarusian National Technical UniversityПриборы и методы измерений2220-95062414-04732019-06-0110220721410.21122/2220-9506-2019-10-2-207-214354Measurement and Real Time Analysis of Local Damage in Wear-and-Fatigue TestsS. S. Sherbakov0State Committee on Science and Technology of the Republic of Belarus; Belarusian State UniversityIn rolling fatigue tests the approach of the axes is usually measured once per cycle or for several loading cycles because of the difficulties of processing a large amount of data in multi-cycle testing. The aim of this work was the development and tests of smoothing model for measured by the SZ-01 center time series experimental data using wavelet transform.With the help of the SZ center, the frictional moment in the roller/shaft system was measured allowing for studying the change in the coefficient of rolling resistance as a function of the level of the contact and non-contact bending load during wear-fatigue tests. Also the axes approach of the contacting bodies (roller and shaft) was measured at eight points on the raceway circumference in one cycle. This allowed studying the heterogeneity of local damages under conditions of rolling and mechano-rolling fatigue. When developing a software module for smoothing a large amount of experimental data from the test center, various methods of time series smoothing were used: moving average; exponential moving average; wavelet transform and moving average applied to the differences of the wavelet coefficients; wavelet transform and exponential moving average applied to the difference of the wavelet coefficients.The results of numerical simulation showed that the best approximation to the original series was provided by the wavelet transform using an exponential moving average to smooth the differences between the coefficients of the wavelet transform.The use of a software module based on this model in SZ-01 center allowed smoothing the time series characterizing the change of roller and shaft axes approach and torque.https://pimi.bntu.by/jour/article/view/444tribo-fatiguesz-01 test centerlocal damages under contact fatiguetime serieswavelet transform |
| spellingShingle | S. S. Sherbakov Measurement and Real Time Analysis of Local Damage in Wear-and-Fatigue Tests Приборы и методы измерений tribo-fatigue sz-01 test center local damages under contact fatigue time series wavelet transform |
| title | Measurement and Real Time Analysis of Local Damage in Wear-and-Fatigue Tests |
| title_full | Measurement and Real Time Analysis of Local Damage in Wear-and-Fatigue Tests |
| title_fullStr | Measurement and Real Time Analysis of Local Damage in Wear-and-Fatigue Tests |
| title_full_unstemmed | Measurement and Real Time Analysis of Local Damage in Wear-and-Fatigue Tests |
| title_short | Measurement and Real Time Analysis of Local Damage in Wear-and-Fatigue Tests |
| title_sort | measurement and real time analysis of local damage in wear and fatigue tests |
| topic | tribo-fatigue sz-01 test center local damages under contact fatigue time series wavelet transform |
| url | https://pimi.bntu.by/jour/article/view/444 |
| work_keys_str_mv | AT sssherbakov measurementandrealtimeanalysisoflocaldamageinwearandfatiguetests |