Open AccessSelected laboratory tests on under sleeper pads (USP) used in the railway track system
Author(s) -
Cezary Kraśkiewicz,
Wojciech Oleksiewicz,
Kacper Wasilewski
Publication year - 2019
Publication title -
przegląd komunikacyjny
Language(s) - English
Resource type - Journals
eISSN - 2544-6037
pISSN - 0033-2232
DOI - 10.35117/a_eng_19_05_02
Subject(s) - ballast , track (disk drive) , vibration , environmental science , structural engineering , vibration isolation , reduction (mathematics) , noise (video) , marine engineering , engineering , geotechnical engineering , acoustics , computer science , mechanical engineering , mathematics , electrical engineering , physics , geometry , image (mathematics) , artificial intelligence
In the present paper results of the tests for fatigue strength and resistance to severeenviron-mental conditions performed on several prototypical under sleeper pads (USP) arepresented. The work includes results of the static and dynamic tests carried out on samples ofthree materials, which were used to produce the USP. The fatigue tests were performed up to500 thousand load cycles and they aimed at determining which of the analysed USP have favourableproperties, taking into account their potential application as the elements used forreduction of stresses in the ballast – especially in the ballast layer directly under the sleeper –and reduction of the material and acoustic vibration emitted to the railway track’s surrounding(vibration and noise). In the climatic tests that were aimed at determining the influence ofsevere environmental conditions on the properties of USP, the samples were attached to concreteblocks and immersed in water for 24 h and then placed in a climatic chamber, wherethey were subjected to freeze-thaw cycles. The results show that both the fatigue and climatictests have influence on the damping-related parameters of the USP, what affects theeffectiveness of the vibration isolation.