Testing methods for vehicle shock absorbers

• Autorzy: Gardulski J.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

transport; vibroacoustic methods; testing methods; shock absorbers

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2008
• Tom: Vol. 15, No. 2
• Strony: 77--88
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Gardulski J.

• Silesian University of Technology, Faculty of Transport Department of Automotive Vehicle Construction Krasińskiego Street 8, 40-019 Katowice, Poland

Bibliografia

• [1] Bocheński, C., Lozia, Z., Mikołajczuk, J., An attempt to objectively assess the testing methods for shock absorbers mounted in vehicles as recommended by EUSAMA association, Tenth Conference on Diagnostics for Work Machines and Vehicles, Bydgoszcz-Borowno 1999.
• [2] Gardulski, J., A method for assessing technical state of car suspensions using no test rigs, Published by Institute of Service Technology, Radom 2003.
• [3] Gardulski, J., Comparison of analyses methods - continuous wavelet transform and wigner-ville’a transform in vehicle shock absorber diagnostic KONES Vol. 14, No. 4, Warsaw 2007.
• [4] Gardulski, J., Warczek, J., Diagnostics for shock absorbers mounted in vehicles based on analysis of nonlinear effects, Silesian Technical University Scientific Journals, No.48, ser.transport, Gliwice 2003.
• [5] Gardulski, J., Warczek, J., Technical state of a fluid telescopic shock absorber as identified on the basis of its characteristics analysis, 30-th Jubilee Polish Symposium on Diagnostics for Machines, Wgierska Gorka 2003.
• [6] Gardulski, J., Warczek, J., Damping power as a diagnostic factor for shock absorbers in cars, DIAGNOSTYKA, Vol.29, Warszawa 2003.
• [7] Lozia, Z., Mikoajczuk, J.: Assessment of usefulness of the diagnostic test on vehicle-mounted shock absorber condition using kinematic extortion for wheel-ground contact, Automotive Archives 2, 1997.
• [8] Ringus, G., A neural network based diagnostic test system for armored vehicle shock absorbers. Expert Systems With Aplications, Vol. 11. No. 2, pp. 237-244, Great Britain, 1996