Frictional Characterization Of Grey Cast Iron Train Brake Block Using A Reduced Scale Dynamometer

Bernardus Prasetya Utama, Herru Santoso Budiono, Eko Surojo, Nurul Muhayat

Abstract

The brake block is an essential component that slows down and stops the train. The safety of this transportation is very dependent on the reliability of this component. One of the essential features of the brake block material is the coefficient of friction. The coefficient of friction of the brake block material should fulfill the requirements. The coefficient of friction of a material is measured using a friction test. Many friction testing methods have been developed to study the characteristics of friction materials. In contrast to previous studies, in this study, the frictional characteristics of gray cast iron brake blocks were evaluated using a reduced scale dynamometer. The friction test is carried out by pressing the brake block specimen to the surface of the rotating wheel. The specimen size of the brake block and carriage wheels is reduced to ¼ of the original size. The friction test is carried out at a contact pressure of 0.15, 0.20, 0.25, and 0.30 MPa and the friction speeds of 3, 6, 9, and 12 m/s. This study indicates that the coefficient of friction of the gray cast iron brake block decreases with increasing sliding speed and contact pressure.

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References

1. Y. A. Rokhim, E. Surojo, N. Muhayat, and W.W. Raharjo, "Frictional Characteristic Evaluation of Composite Brake Block Using A Reduced-Scale Brake Dynamometer," in Proceedings of the 6th International Conference and Exhibition on Sustainable Energy and Advanced Materials, Surakarta, Indonesia, 2019.

2. R. A. Bukhori, E. Surojo, and N. Muhayat, "Perancangan Dinamometer Skala Kecil untuk Pengujian Karakteristik Gesek Bahan Blok Rem Kereta Api," Jurnal Nasional Teknologi Terapan (JNTT), vol. 2, no. 3, pp. 321-333, 2018. (in Indonesian).

3. G. Cueva, A. Sinatora, W. L. Guesser, and A.P. Tschiptschin, "Wear Resistance of Cast Irons Used in Brake Disc Rotors," Wear, vol. 255, no. 7-12, pp. 1256-1260, 2003.

4. M. R. K. Vakkalagadda, D. K. Srivastava, A. Mishra, and V. Racherla, "Performance Analyses of Brake Blocks Used by Indian Railways," Wear, Vol. 328-329, pp. 64-76, 2015.

5. I. T. Maulana, E. Surojo, N. Muhayat, and W. W. Raharjo, "Frictional Characteristics of Friction Brake Material Using Cantala Fibers as Reinforcement," Tribol. Online, Vol. 13, no. 4, pp. 188-194, 2018.

6. M. Pellizzari and G. Cipolloni, "Tribological Behaviour of Cu Based Materials Produced by Mechanical Milling/Alloying and Spark Plasma Sintering, Wear, Vol. 376-377, pp. 958-967, 2017.

7. J. Li, J. Wongsa-Ngam, J. Xu, D. Shan, B. Guo, and T. G. Langdon, "Wear Resistance of an Ultrafine-Grained Cu-Zr Alloy Processed by Equal-Channel Angular Pressing," Wear, Vol. 326-327, pp. 10-19, 2015.

8. I. Kurniawan, " Struktur Mikro Dan Keausan Blok Rem Kereta Api Berbahan Al-Sic Berdasarkan Komposisi Material," Info Teknik Mesin, vol. 7, pp. 13-18, 2014. (in Indonesian).

9. L. D. Setyana, " Studi Ukuran Grafit Besi Cor Kelabu Terhadap Laju Keausan Pada Produk Blok Rem Metalik Kereta Api," Jurnal Material Teknologi Proses, vol. 1 , no. 1, pp. 19-24, 2015. (in Indonesian).

10. B. Prasetya and M. Zainuri, " Pengaruh Fraksi Berat Serat Waru terhadap Sifat Mekanik Kampas Rem Kereta Api Komposit Non Asbestos," Jurnal Sains dan Seni ITS, vol. 6, no. 2, pp. B48-B53, 2017. (in Indonesian).

11. H. W. Septriana, G. D. Haryadi, and M. Ariyanto, " Pembuatan dan Pengujian Alat Pengukur Temperatur pada Rem Tromol Kendaraan Roda Dua dengan Remote Measuring System," Jurnal Teknik Mesin, vol. 5, no. 1, pp. 66-72, 2017. (in Indonesian).

12. M. Fauzan and G. D. Haryadi, "Pengaruh Variasi Putaran Mesin dan Waktu Pengereman Terhadap Temperatur dan Koefisien Gesek pada Brake Pads Dengan Alat Uji Berbasis Remote Monitoring System," Jurnal Teknik Mesin, vol. 4, vol. 1, pp. 17-24, 2016. (in Indonesian).

13. P. J. Blau and J. C. Mclaughlin, "Effects of Water Films and Sliding Speed on the Frictional Behavior of Truck Disc Brake Materials," Trib. Int., Vol. 36, pp. 709-715, 2003.

14. J. Bao, Z. Zhu, M. Tong, Y. Yin, and Y. Peng, "Influence of Braking Pressure on Tribological Performance of Non-Asbestos Brake Shoe for Mine Hoister during Emergency Braking," Ind. Lubr. Tribol., vol. 64, no. 4, pp. 230-236, 2012.

15. D. Severin and S. Dörsch, "Friction Mechanism in Industrial Brakes," Wear, vol. 249, no. 9, pp. 771-779, 2001.

16. X. Ma, C. Luan, S. Fan, J. Deng, L. Zhang, and L. Cheng, "Comparison of braking behaviors between iron- and copper-based powder metallurgy brake pads that used for C/C–SiC disc," Tribol. Int., vol. 154, article no. 106686, 2021.

17. C. P. Bretotean, R. Bhandari, C. Sharma, S. K. Dhakad, P. Cosmin, and A. K. Sharma, "An investigation of thermal behaviour of brake disk pad assembly with Ansys," Mat. Today. Proc., vol. 47, pp. 2322-2328, 2021.

18. J. Gweon, J. Park, W. K. Lee, D. Y. Kim, and H. Jang, "Root cause study of corrosion stiction by brake pads on the grey iron disc," Eng. Fail. Anal., vol. 128, article no. 105583, 2021.

19. S. Zhao, X. Zhang, W. Zhong, Y. Wen, and Q. Yan, "The wet braking and recovery behaviors of the P/M pad mated with C/C–SiC disc for high-speed trains," Wear, vol. 468-469, article no. 203609, 2021.

20. V. Matějka, I. Metinöz, J. Wahlström, M. Alemani, and G. Perricone, "On the running-in of brake pads and discs for dyno bench tests," Tribol. Int., vol. 115, pp. 424-431, 2017.

21. A. Yevtushenko, M. Kuciej, and P. Wasilewski, "Experimental study on the temperature evolution in the railway brake disc," Theo. Appl. Mech. Lett., vol. 9, no. 5, pp. 308-311, 2019.

22. K. R. M. Mahmoud, M. Mourad, and A. B. Mahfouz, "Dynamic behaviors of a wedge disc brake," Appl. Acoust., vol. 128, pp. 32-39, 2017.

23. C. B. N. S. Abhishikt, B. Ramachandran, and G. N. Alekhya, "Design and analysis of disk rotor brake under tribological behaviour of materials," Mat. Today. Proc., vol. 33, pp. 4298-4310, 2020.

DOI: https://doi.org/10.20961/mekanika.v21i1.48246

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