The Experts below are selected from a list of 183 Experts worldwide ranked by ideXlab platform

Adam Jablonski - One of the best experts on this subject based on the ideXlab platform.

  • epicyclic gearbox fault detection by instantaneous Circular Pitch cycle map
    Mechanical Systems and Signal Processing, 2019
    Co-Authors: Kajetan Dziedziech, Adam Jablonski, Ziemowit Dworakowski
    Abstract:

    Abstract The paper introduces the concept of Instantaneous Circular Pitch Cycle Map (ICPCM) as a tool for analysis and diagnosis of modulation signatures in vibrations generated by Epicyclic Gearbox (EGs). The method is based on the representation of a vibration signal as a 3-D map illustrating selected signal properties. Within the method, a novel concept of a Resampling Relative Order (RRO) is introduced. The paper illustrates how the ICPCM might serve as an auxiliary tool for proper interpretation of spectra, envelope spectra, and time-synchronous averaged representations. The idea of the method is presented on a simulated signal, while its practical performance is illustrated on a real signal from a multi-stage EG.

  • instantaneous Circular Pitch cyclic power icpcp a tool for diagnosis of planetary gearboxes
    Key Engineering Materials, 2012
    Co-Authors: Adam Jablonski, Tomasz Barszcz
    Abstract:

    The process of monitoring and diagnosis of planetary gearboxes is currently one of the most significant topics for vibroanalysis. The reason for ubiquitous research activities on the topic arises form a shortage of efficient method for a non-destructive thorough vibration analysis of planetary gearboxes, especially working under low speeds. On the other hand, the number of high-value planetary gearboxes working in industry rises rapidly, mainly due to expansion of wind farms. In the paper, the authors present a novel method for the assessment of the technical state of planetary gearboxes with a vibration sensor mounted on the casing, and without a planets position sensor. The method is based on the calculation of cyclic energy of gearbox teeth contact within consecutive carrier revolutions. The methods performance is illustrated on a real data from a wind turbine.

Leszek Salbut - One of the best experts on this subject based on the ideXlab platform.

  • Measurements of characteristic parameters of extremely small cogged wheels with low module by means of low-coherence interferometry
    Proceedings of SPIE, 2010
    Co-Authors: Anna Pakula, Slawomir Tomczewski, Andrzej Skalski, D. Biało, Leszek Salbut
    Abstract:

    This paper presents novel application of Low Coherence Interferometry (LCI) in measurements of characteristic parameters as Circular Pitch, foot diameter, heads diameter, in extremely small cogged wheels (cogged wheel diameter lower than θ=3 mm and module m = 0.15) produced from metal and ceramics. The most interesting issue concerning small diameter cogged wheels occurs during their production. The characteristic parameters of the wheel depend strongly on the manufacturing process and while inspecting small diameter wheels the shrinkage during the cast varies with the slight change of fabrication process. In the paper the LCI interferometric Twyman - Green setup with pigtailed high power light emitting diode, for cogged wheels measurement, is described. Due to its relatively big field of view the whole wheel can be examined in one measurement, without the necessity of numerical stitching. For purposes of small cogged wheel's characteristic parameters measurement the special binarization algorithm was developed and successfully applied. At the end the results of measurement of heads and foot diameters of two cogged wheels obtained by proposed LCI setup are presented and compared with the results obtained by the commercial optical profiler. The results of examination of injection moulds used for fabrication of measured cogged wheels are also presented. Additionally, the value of cogged wheels shrinkage is calculated as a conclusion for obtained results. Proposed method is suitable for complex measurements of small diameter cogged wheels with low module especially when there are no measurements standards for such objects.

  • Measurements of characteristic parameters of extremely small cogged wheels with low module by means of Low Coherence Interferometry
    Proceedings of SPIE, 2010
    Co-Authors: Anna Pakula, Slawomir Tomczewski, Dionizy Biało, Andrzej Skalski, Leszek Salbut
    Abstract:

    This paper presents novel application of Low Coherence Interferometry (LCI) in measurements of characteristic parameters as Circular Pitch, foot diameter, heads diameter, in extremely small cogged wheels (cogged wheel diameter lower than θ=3 mm and module m = 0.15) produced from metal and ceramics. The most interesting issue concerning small diameter cogged wheels occurs during their production. The characteristic parameters of the wheel depend strongly on the manufacturing process and while inspecting small diameter wheels the shrinkage during the cast varies with the slight change of fabrication process. In the paper the LCI interferometric Twyman - Green setup with pigtailed high power light emitting diode, for cogged wheels measurement, is described. Due to its relatively big field of view the whole wheel can be examined in one measurement, without the necessity of numerical stitching. For purposes of small cogged wheel's characteristic parameters measurement the special binarization algorithm was developed and successfully applied. At the end the results of measurement of heads and foot diameters of two cogged wheels obtained by proposed LCI setup are presented and compared with the results obtained by the commercial optical profiler. The results of examination of injection moulds used for fabrication of measured cogged wheels are also presented. Additionally, the value of cogged wheels shrinkage is calculated as a conclusion for obtained results. Proposed method is suitable for complex measurements of small diameter cogged wheels with low module especially when there are no measurements standards for such objects. © 2010 Copyright SPIE - The International Society for Optical Engineering.

Ziemowit Dworakowski - One of the best experts on this subject based on the ideXlab platform.

  • epicyclic gearbox fault detection by instantaneous Circular Pitch cycle map
    Mechanical Systems and Signal Processing, 2019
    Co-Authors: Kajetan Dziedziech, Adam Jablonski, Ziemowit Dworakowski
    Abstract:

    Abstract The paper introduces the concept of Instantaneous Circular Pitch Cycle Map (ICPCM) as a tool for analysis and diagnosis of modulation signatures in vibrations generated by Epicyclic Gearbox (EGs). The method is based on the representation of a vibration signal as a 3-D map illustrating selected signal properties. Within the method, a novel concept of a Resampling Relative Order (RRO) is introduced. The paper illustrates how the ICPCM might serve as an auxiliary tool for proper interpretation of spectra, envelope spectra, and time-synchronous averaged representations. The idea of the method is presented on a simulated signal, while its practical performance is illustrated on a real signal from a multi-stage EG.

Tomasz Barszcz - One of the best experts on this subject based on the ideXlab platform.

  • instantaneous Circular Pitch cyclic power icpcp a tool for diagnosis of planetary gearboxes
    Key Engineering Materials, 2012
    Co-Authors: Adam Jablonski, Tomasz Barszcz
    Abstract:

    The process of monitoring and diagnosis of planetary gearboxes is currently one of the most significant topics for vibroanalysis. The reason for ubiquitous research activities on the topic arises form a shortage of efficient method for a non-destructive thorough vibration analysis of planetary gearboxes, especially working under low speeds. On the other hand, the number of high-value planetary gearboxes working in industry rises rapidly, mainly due to expansion of wind farms. In the paper, the authors present a novel method for the assessment of the technical state of planetary gearboxes with a vibration sensor mounted on the casing, and without a planets position sensor. The method is based on the calculation of cyclic energy of gearbox teeth contact within consecutive carrier revolutions. The methods performance is illustrated on a real data from a wind turbine.

  • Instantaneous Circular Pitch Cyclic Power (ICPCP) – A Tool for Diagnosis of Planetary Gearboxes
    Key Engineering Materials, 2012
    Co-Authors: Adam Jabłoński, Tomasz Barszcz
    Abstract:

    The process of monitoring and diagnosis of planetary gearboxes is currently one of the most significant topics for vibroanalysis. The reason for ubiquitous research activities on the topic arises form a shortage of efficient method for a non-destructive thorough vibration analysis of planetary gearboxes, especially working under low speeds. On the other hand, the number of high-value planetary gearboxes working in industry rises rapidly, mainly due to expansion of wind farms. In the paper, the authors present a novel method for the assessment of the technical state of planetary gearboxes with a vibration sensor mounted on the casing, and without a planets position sensor. The method is based on the calculation of cyclic energy of gearbox teeth contact within consecutive carrier revolutions. The methods performance is illustrated on a real data from a wind turbine.

Anna Pakula - One of the best experts on this subject based on the ideXlab platform.

  • Measurements of characteristic parameters of extremely small cogged wheels with low module by means of low-coherence interferometry
    Proceedings of SPIE, 2010
    Co-Authors: Anna Pakula, Slawomir Tomczewski, Andrzej Skalski, D. Biało, Leszek Salbut
    Abstract:

    This paper presents novel application of Low Coherence Interferometry (LCI) in measurements of characteristic parameters as Circular Pitch, foot diameter, heads diameter, in extremely small cogged wheels (cogged wheel diameter lower than θ=3 mm and module m = 0.15) produced from metal and ceramics. The most interesting issue concerning small diameter cogged wheels occurs during their production. The characteristic parameters of the wheel depend strongly on the manufacturing process and while inspecting small diameter wheels the shrinkage during the cast varies with the slight change of fabrication process. In the paper the LCI interferometric Twyman - Green setup with pigtailed high power light emitting diode, for cogged wheels measurement, is described. Due to its relatively big field of view the whole wheel can be examined in one measurement, without the necessity of numerical stitching. For purposes of small cogged wheel's characteristic parameters measurement the special binarization algorithm was developed and successfully applied. At the end the results of measurement of heads and foot diameters of two cogged wheels obtained by proposed LCI setup are presented and compared with the results obtained by the commercial optical profiler. The results of examination of injection moulds used for fabrication of measured cogged wheels are also presented. Additionally, the value of cogged wheels shrinkage is calculated as a conclusion for obtained results. Proposed method is suitable for complex measurements of small diameter cogged wheels with low module especially when there are no measurements standards for such objects.

  • Measurements of characteristic parameters of extremely small cogged wheels with low module by means of Low Coherence Interferometry
    Proceedings of SPIE, 2010
    Co-Authors: Anna Pakula, Slawomir Tomczewski, Dionizy Biało, Andrzej Skalski, Leszek Salbut
    Abstract:

    This paper presents novel application of Low Coherence Interferometry (LCI) in measurements of characteristic parameters as Circular Pitch, foot diameter, heads diameter, in extremely small cogged wheels (cogged wheel diameter lower than θ=3 mm and module m = 0.15) produced from metal and ceramics. The most interesting issue concerning small diameter cogged wheels occurs during their production. The characteristic parameters of the wheel depend strongly on the manufacturing process and while inspecting small diameter wheels the shrinkage during the cast varies with the slight change of fabrication process. In the paper the LCI interferometric Twyman - Green setup with pigtailed high power light emitting diode, for cogged wheels measurement, is described. Due to its relatively big field of view the whole wheel can be examined in one measurement, without the necessity of numerical stitching. For purposes of small cogged wheel's characteristic parameters measurement the special binarization algorithm was developed and successfully applied. At the end the results of measurement of heads and foot diameters of two cogged wheels obtained by proposed LCI setup are presented and compared with the results obtained by the commercial optical profiler. The results of examination of injection moulds used for fabrication of measured cogged wheels are also presented. Additionally, the value of cogged wheels shrinkage is calculated as a conclusion for obtained results. Proposed method is suitable for complex measurements of small diameter cogged wheels with low module especially when there are no measurements standards for such objects. © 2010 Copyright SPIE - The International Society for Optical Engineering.