The determination procedure of the onset of the object wear-out period based on monitoring of the empirical failure intensity function

Gill, Adrian; Kadziński, Adam

doi:10.17531/ein.2015.2.16

Cited by 8 publications

(6 citation statements)

References 8 publications

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“…Data obtained during tests on the certified brake inertia test stand are used for modeling the braking process or forecasting damage to brake system components. [9]. Fig.4.…”

Section: Methodology and Object Of Researchmentioning

confidence: 99%

The Application of Vibration Accelerations in the Assessment of Average Friction Coefficient of a Railway Brake Disc

Sawczuk

2017

Measurement Science Review

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Due to their wide range of friction characteristics resulting from the application of different friction materials and good heat dissipation conditions, railway disc brakes have long replaced block brakes in many rail vehicles. A block brake still remains in use, however, in low speed cargo trains. The paper presents the assessment of the braking process through the analysis of vibrations generated by the components of the brake system during braking. It presents a possibility of a wider application of vibroacoustic diagnostics (VA), which aside from the assessment of technical conditions (wear of brake pads) also enables the determination of the changes of the average friction coefficient as a function of the braking onset speed. Vibration signals of XYZ were measured and analyzed. The analysis of the results has shown that there is a relation between the values of the point measures and the wear of the brake pads.

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“…Data obtained during tests on the certified brake inertia test stand are used for modeling the braking process or forecasting damage to brake system components. [9]. Fig.4.…”

Section: Methodology and Object Of Researchmentioning

confidence: 99%

The Application of Vibration Accelerations in the Assessment of Average Friction Coefficient of a Railway Brake Disc

Sawczuk

2017

Measurement Science Review

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“…30.6% of the total failures. Below, subparagraphs (a)-(c) present selected ratios relating to the safety of a 6Dg locomotive, which are defined in specialist writings on the assessment of reliability, availability, maintainability and safety 26,[43][44][45][46][47][48][49][50] and in the applicable standards 22,51 :…”

Section: Rams Indices Relating To Safetymentioning

confidence: 99%

Assessment of the permissibility of the risk of changing the strategy for the maintenance of rail vehicles based on the example of a selected locomotive type

Szkoda

Satora

2018

Proceedings of the Institution of Mechanical Engineers, Part F:

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The paper presents a methodology for the assessment of the permissibility of the risk of changing the strategy for the maintenance of rail vehicles based on the example of a 6Dg diesel locomotive. The example of implementation has been preceded with the characteristics of the general formal requirements involved in the risk management process in accordance with the Commission Implementing Regulation (EU) No. 402/2013. The methodology which has been developed demonstrates that in order to appropriately quantify the frequency of occurrence of hazards (hazardous failures in particular) and adopt the correct risk assessment criteria, it is necessary to perform the reliability, availability, maintainability, safety analysis in the area of safety. Using the example and based on the reliability data gathered during the 15 months of operation of 75 locomotives, selected safety ratios for the locomotive's assemblies and subassemblies were determined whose failures lead to hazards to reliability and safety of rail transport. In order to qualify the risk involved in the occurrence of the hazards, one of the methods of estimating the explicit risk – the failure mode and effects analysis (FMEA) – was applied. The analysis demonstrated the possibility of and conditions for the introduction of changes in the maintenance strategy which would not be in breach of the acceptable risk level.

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“…However, these techniques are limited in case of planning of diagnostic experiments, which are often conditioned by the possibilities of their realization. Therefore, in diagnostic tests, aimed at defining the relationship state  signal, with the assumption of a cause-and-effect action of the diagnosed object, there are three types of diagnostic experiments distinguished [6,7,11,12]:…”

Section: Diagnostic Experimentsmentioning

confidence: 99%

“…Methods for reducing the vector of diagnostic signal parameters are presented in works: [4][5][6]. In papers [4,5], the author proposed selection of diagnostic parameters based on the passive diagnostic experiment performed in compliance with the algorithm of the BEDIND program (the name stands for "Bierny Eksperyment Detekcji Informacji Diagnostycznej" in Polish, which means "Passive Experiment of Detection of Diagnostic Information").…”

Section: Introductionmentioning

confidence: 99%

Method of reduction of diagnostic parameters during observation on the example of a combustion engine

Orczyk

Tomaszewski

2017

MATEC Web Conf.

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Abstract. The article presents a method of selecting diagnostic parameters which map the process of damaging the object. This method consists in calculating, during the observation, the correlation coefficient between the intensity of damage and the individual diagnostic parameters; and discarding of those parameters whose correlation coefficient values are outside of the narrowest confidence interval of the correlation coefficient. The characteristic feature of this method is that the parameters are reduced during the diagnostic experiment. The essence of the proposed method is illustrated by the vibration diagnosis of an internal combustion engine.

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The determination procedure of the onset of the object wear-out period based on monitoring of the empirical failure intensity function

Cited by 8 publications

References 8 publications

The Application of Vibration Accelerations in the Assessment of Average Friction Coefficient of a Railway Brake Disc

The Application of Vibration Accelerations in the Assessment of Average Friction Coefficient of a Railway Brake Disc

Assessment of the permissibility of the risk of changing the strategy for the maintenance of rail vehicles based on the example of a selected locomotive type

Method of reduction of diagnostic parameters during observation on the example of a combustion engine

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