Autor: Dabrowski, Z. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Simultaneous Analysis of Noise and Vibration of Machines in Vibroacoustic Diagnostics
Autorzy:: Dąbrowski, Z.
Dziurdź, J.
Powiązania:: https://bibliotekanauki.pl/articles/176544.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: mechanical vibration
noise
vibroacoustic diagnostics
Opis:: The article is a continuation of the authors’ elaboration (Dąbrowski, Dziurdź, 2016). The aim of this continuation is to prove that a proposed way of modelling and using the coherent analysis to filter nonlinear disturbances is a useful technique in vibroacoustic diagnostics. The thesis was proved by solving the task of diagnosing the damage of the gear of the car gearbox on the basis of the measurement of mechanical vibrations and the noise in the engine chamber.
Źródło:: Archives of Acoustics; 2016, 41, 4; 783-789
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Simultaneous Analysis of Vibrations and Noise in the Task of Minimizing Vibroacoustic Activity of Machines
Autorzy:: Dąbrowski, Z.
Dziurdź, J.
Powiązania:: https://bibliotekanauki.pl/articles/177692.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: signal separation
noise minimizing
frequency response function
Opis:: Simultaneous propagation of vibrations and noise has an important role in the task of minimizing vibroacoustic hazards on the station of operator of the construction machinery. In many cases vibrations transferred by the construction are processed to noise in different points of the machine. As a result, they may increase the level of noise at the workplace. The paper presents the proposition of a simple estimation of noise and vibration propagation paths of the machine. On the basis of the analysis of hydraulic excavator an effectiveness of a proposed procedure was shown. This procedure helps to minimize the transfer of vibrations of power unit in selected frequency ranges which led to the change of overall noise level in operator’s cab about 5 dB.
Źródło:: Archives of Acoustics; 2016, 41, 2; 303-308
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Utilisation of the Coherence Analysis in Acoustic Diagnostics of Internal Combustion Engines
Autorzy:: Dąbrowski, Z.
Dziurdź, J.
Górnicka, D.
Powiązania:: https://bibliotekanauki.pl/articles/176779.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: acoustic diagnostics
internal combustion engines
mechanical defects
Opis:: The leading thought of the present text is that the internal combustion engine noise – regardless of all possible inconveniences – is a good information carrier that allows for the explicit diagnostics of such subtle defect as the valve face decrement which is so small that it is in practice ‘unnoticeable’ by the standard diagnostic-controlling system of a passenger car. However, such defect at its further propagation can be much more dangerous. Thus, diagnosing its initial state is worth trying. This study is a continuation of investigations where efforts were undertaken to perform the efficient diagnostics on the bases of observations and analyses of mechanical vibrations of the engine head.
Źródło:: Archives of Acoustics; 2017, 42, 3; 475-481
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Influence of the mesh geometry evolution on gearbox dynamics during its maintenance
Autorzy:: Dąbrowski, Z.
Dziurdź, J.
Klekot, G.
Powiązania:: https://bibliotekanauki.pl/articles/264337.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: geometry of gears
slippage velocity
vibroacoustics
wibroakustyka
prędkość poślizgu
geometria przekładni
Opis:: Toothed gears constitute the necessary elements of power transmission systems. They are applied as stationary devices in drive systems of road vehicles, ships and crafts as well as airplanes and helicopters. One of the problems related to the toothed gears usage is the determination of their technical state or its evolutions. Assuming that the gear slippage velocity is attributed to vibrations and noises generated by cooperating toothed wheels, the application of a simple cooperation model of rolled wheels of skew teeth is proposed for the analysis of the mesh evolution influence on the gear dynamics. In addition, an example of utilising an ordinary coherence function for investigating evolutionary mesh changes related to the effects impossible to be described by means of the simple kinematic model is presented.
Źródło:: International Journal of Applied Mechanics and Engineering; 2017, 22, 4; 1097-1105
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Selection of sound insulating elements in hydraulic excavators based onidentification of vibroacoustic energy propagation paths
Autorzy:: Dąbrowski, Z.
Dziurdź, J.
Pakowski, R.
Powiązania:: https://bibliotekanauki.pl/articles/177189.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: noise and vibration
propagation path
coherence function
Opis:: In spite of the fact that standardizing operations and increased awareness of hazards led to a significant improvement of vibroacoustic climate of operator’s stands of new machines, their long-term operation - often under difficult conditions - leads to a fast degradation of acoustic qualities of machines. Temporary operations performed during surveys and periodical overhauls are rarely effective, due to the lack of any guidelines. In this situation the authors propose the algorithm for selection of eventual screens or sound absorbing and sound insulating partitions, utilizing the measuring procedure aimed at identification, at the operator’s stand, of main noise components originated from various sources. On the basis of this procedure, the vibroacoustic energy propagation paths in the machine was estimated.
Źródło:: Archives of Acoustics; 2013, 38, 4; 471-478
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

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