Autor: Gardulski, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Measuring head for operational testing of car suspension systems with vibroacoustic methods
Autorzy:: Gardulski, J.
Powiązania:: https://bibliotekanauki.pl/articles/245713.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
passenger cars
suspension systems
measurement tracks
vibroacoustic methods
Opis:: The article provides a discussion upon the structure of a measuring head designed and manufactured with the purpose of acquisition of data required by a diagnostic system for hydraulic telescopic shock absorbers of passenger cars operating based on vibroacoustic methods. The basis for the design development was a set of initial assumptions adjusted to the multidimensional methods of analysing vibration signals applied. For the design of the measurement track, a block diagram was proposed which was then extended by auxiliary electronic elements of the measuring system conforming with all the relevant requirements. The main components of the measurement track included: a three-axis sensor for vibration acceleration constructed based on one-axis converters, an angular displacement sensor usedfor measuring the rotation angle and linear velocity of a car and a laser road unevenness sensor. For the computer recording of the signals being measured, an analogue-digital cardwas used. The measuring head in question was mounted on a measuring trolley and then test and trial examinations were conducted while driving at various speeds up to 50 km/h in normal operating conditions. The repeatability of the measurement results obtained proved the measuring head's usability in testing.
Źródło:: Journal of KONES; 2009, 16, 4; 135-140
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Testing methods for vehicle shock absorbers
Autorzy:: Gardulski, J.
Powiązania:: https://bibliotekanauki.pl/articles/244102.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
vibroacoustic methods
testing methods
shock absorbers
Opis:: The suspension is the component decisive about safety of drive of cars, in which dumping elements have essential meaning, which the most often are telescopic hydraulic shock-absorbers. Therefore, in exploitation process so important investigations of their technical condition are in track which opinion of their usefulness should be made not only to more far exploitation, but also the identification of typical damages. The common used method in practical ways of diagnosing of shock-absorber in article was introduced. There are two methods of investigations: built from and shock-absorber built-in in vehicle suspension. In first method - in support about indicatory graph, the characteristic of suppression be appointive. They are the basis to diagnostic opinion of technical condition of studied damper. In second method the results of investigations have approximate character. From those methods the most often used station control of vehicles in Poland - method post EUSAMA and BOGE in article were described, which used in investigations the harmonic excitatory of vibrations stimulant to vibrations unsprung and sprung masses of vehicle. The car is so folded, vibrate mechanical stimulated by excitator to vibrations arrangement. The vibro-acoustic methods of analyses' of signals in article were introduced, which can be practical in investigations of diagnostic shock-absorber. They are then the method of multidimensional analysis of signal - the Short-Time Fourier Transforms (the STFT), Wigner - Ville'a and Wavelet.
Źródło:: Journal of KONES; 2008, 15, 2; 77-88
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Metody badań amortyzatorów samochodów osobowych
Testing methods for vehicle shock absorbers
Autorzy:: Gardulski, J.
Powiązania:: https://bibliotekanauki.pl/articles/327768.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:: zawieszenie samochodowe
metoda badań
amortyzator
metoda wibroakustyczna
transport
vibroacoustic method
testing method
shock absorber
Opis:: Podzespołem decydującym o bezpieczeństwie jazdy samochodów jest jego zawieszenie, w którym istotne znaczenie mają elementy tłumiące, którymi najczęściej są teleskopowe amortyzatory hydrauliczne. Dlatego w procesie eksploatacji tak ważne są badania ich stanu technicznego w trakcie których nie tylko powinna być dokonywana ocena ich przydatności do dalszej eksploatacji, ale również identyfikacja typowych uszkodzeń . W artykule przedstawiono powszechnie stosowane sposoby diagnozowania amortyzatorów, wśród których wyróżnić można dwie metody badań: amortyzatorów wybudowanych z pojazdu i amortyzatorów zabudowanych w pojeździe.
The suspension is the component decisive about safety of drive of cars, in which dumping elements have essential meaning, which the most often are telescopic hydraulic shock-absorbers. Therefore in exploitation process so important investigations of their technical condition are in track which opinion of their usefulness should be made not only to more far exploitation, but also the identification of typical damages. The common used method in practical ways of diagnosing of shock-absorber in article were introduced. There are two methods of investigations: built from and shock-absorber built-in in vehicle suspension.
Źródło:: Diagnostyka; 2009, 3(51); 93-100
1641-6414
2449-5220
Pojawia się w:: Diagnostyka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Assessing the reliability of testing methods used for fluid telescopic shock absorbers in cars
Autorzy:: Gardulski, J.
Powiązania:: https://bibliotekanauki.pl/articles/243338.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road transport
safety of transport
testing methods
shock absorbers
Opis:: Shock absorbers in modern cars have asymmetric damping characteristics corrected by overflow valves. Their indicator diagrams are far from being elliptical. Defective shock absorbers may lead to excessive amplitudes in vibration accelerations, excessive car body rolls, both lateral and longitudinal, excessive braking distance and destruction of the car components or road surface. The paper discusses methods of testing shock absorbers mounted or removed from the car. Advantages and disadvantages of the methods are used as bas is for the assessment. It is pointed out that the methods should not assume linear characteristics of springs and damping elements. Testing methods can be divided as follows: - those referring to shock absorbers removed from the car, - those referring to shock absorbers mounted in the car. Methods used for testing shock absorbers removed from the car are those performed on indicator test rigs provided with mechanical-electric or electrohydraulic extortion system. Such test rigs have measuring devices to enable recording of indicator diagrams relative to the absorber damping force in function of piston stroke with deflection and reflection. Among a variety of testing methods, those requiring no removal are by far preferred by Vehicle Control Stations or diagnostic lines. The methods can be divided asfollows: -free vibration type, -forced vibration type.
Źródło:: Journal of KONES; 2008, 15, 1; 79-85
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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