Evaluation of Thermal Barrier Coating in Fatigue Life for an Aluminum Alloy Piston with Considering Residual Stress
محورهای موضوعی :
Mechanical Engineering
Hojjat Ashouri
1
1 - Department of Mechanical Engineering, Varamin-Pishva Branch, Islamic Azad University, Tehran, Iran
تاریخ دریافت : 1402/04/08
تاریخ پذیرش : 1402/06/06
تاریخ انتشار : 1402/06/10
کلید واژه:
thermal barrier coating,
Piston,
residual stress and fatigue life,
چکیده مقاله :
Nowadays, engine components are subjected to higher loads at elevated temperatures due to the increasing requirements regarding weight, performance, and exhaust gas emission. Thus, fatigue due to simultaneous thermal and mechanical loading became a determinant among the damage forms. The effect of a thermal barrier coating (TBC) on the thermal stress and fatigue life in a gasoline engine piston with considering stress gradient was studied. For this purpose, coupled thermo-mechanical analysis of a gasoline engine piston was performed. Then fatigue life of the component was predicted using a standard stress-life analysis and results were compared to the original piston. The results of finite element analysis (FEA) indicated that the stress and number of cycles to failure have the most critical values at the upper portion of piston pin and piston compression grooves. The obtained thermo-mechanical analysis results proved that the TBC system reduces the stress distribution in the piston by about 2.4 MPa and 8.5 MPa at engine speeds of 1000 rpm and 5000 rpm, respectively. The fatigue life results showed that the number of cycles of failure for the coated piston is approximately 12% and 31% higher than the original piston at engine speeds of 1000 rpm and 5000 rpm, respectively. To evaluate properly of results, stress analysis and fatigue life results is compared with experimental damaged piston and it has been shown that critical identified areas, match well with areas of failure in the experimental sample.
چکیده انگلیسی:
Nowadays, engine components are subjected to higher loads at elevated temperatures due to the increasing requirements regarding weight, performance, and exhaust gas emission. Thus, fatigue due to simultaneous thermal and mechanical loading became a determinant among the damage forms. The effect of a thermal barrier coating (TBC) on the thermal stress and fatigue life in a gasoline engine piston with considering stress gradient was studied. For this purpose, coupled thermo-mechanical analysis of a gasoline engine piston was performed. Then fatigue life of the component was predicted using a standard stress-life analysis and results were compared to the original piston. The results of finite element analysis (FEA) indicated that the stress and number of cycles to failure have the most critical values at the upper portion of piston pin and piston compression grooves. The obtained thermo-mechanical analysis results proved that the TBC system reduces the stress distribution in the piston by about 2.4 MPa and 8.5 MPa at engine speeds of 1000 rpm and 5000 rpm, respectively. The fatigue life results showed that the number of cycles of failure for the coated piston is approximately 12% and 31% higher than the original piston at engine speeds of 1000 rpm and 5000 rpm, respectively. To evaluate properly of results, stress analysis and fatigue life results is compared with experimental damaged piston and it has been shown that critical identified areas, match well with areas of failure in the experimental sample.
منابع و مأخذ:
Liu Y., Jing G., Liu H., Zhang W., Han M., Xiao S., Zhang Z., 2022, Failure analysis and design improvements of steel piston for a high-power marine diesel engine, Engineering Failure Analysis 142: 106825.
Chen Z., Li J., Liao J., Shi F., 2019, Stress and fatigue analysis of engine pistons using thermo-mechanical model, Journal of Mechanical Science and Technology 33(9): 4199-4207.
Ashouri H., 2022, Fatigue life assessment for an aluminum alloy piston using stress gradient approach described in the FKM method, Journal of Solid Mechanics 14(1): 57-66.
Ashouri H., 2021, Improving high cycle fatigue life in a gasoline engine piston using oil gallery with considering stress gradient, International Journal of Advanced Design and Manufacturing Technology 14(4): 73-82.
Nouby M., Ghazaly K., Abd El-Gwwad A., 2019, Evaluation of gasoline engine piston with various coating materials using finite element method, International Journal of Automotive Engineering 9(2): 2942-2948.
Godiganur V.S., Nayaka S., Kumar G.N., 2020, Thermal barrier coating for diesel engine application–A review, Journal of Materials Today: Proceedings 45: 133-137.
Balu P., Saravanan P., Jayaseelan V., 2020, Effect of ceramic coating on the performance, emission, and combustion characteristics of ethanol DI diesel engine, Materials Today: Proceedings 39: 1259-1264.
Prakash S., Prabhahar M., Niyas O.P, Faris S., Vyshnav C., 2020, Thermal barrier coating on IC engine piston to improve efficiency using dual fuel, Materials Today: Proceedings 33: 919-924.
Gehlot R., Tripathi B., 2016, Thermal analysis of holes created on ceramic coating for diesel engine piston, Case Studies in Thermal Engineering 8: 291-299.
Selvam M., Shanmugan S., Palani S., 2018, Performance analysis of IC engine with ceramic-coated piston, Environmental Science and Pollution Research 25: 35210-35220.
Xuguanga T., Jianb Z., Peiyou X., 2020, Wear resistance mechanism of engine piston skirt coating under cold start condition, Engineering Failure Analysis 118: 104912.
Ramaswamya P., Shankar V.B., Reghu V.R.C., Mathewd N., Manoj Kumar S.E., 2018, A model to predict the influence of inconsistencies in thermal barrier coating (TBC) thicknesses in pistons of IC engines, Materials Today: Proceedings 5: 12623-12631.
Jiana Z., Zhong-yub P., Shi-yingc L., Sheng-weid S., Li-juna D., 2019, Investigation of wear behavior of graphite coating on aluminum piston skirt of automobile engine, Engineering Failure Analysis 97: 408-415.
Yao Z., Hu K., Li R., 2019, Enhanced high-temperature thermal fatigue property of aluminum alloy piston with Nano PYSZ thermal barrier coatings, Journal of Alloys and Compounds 790: 466-479.
Yao Z., Li W., 2019, Microstructure and thermal analysis of APS nano PYSZ coated aluminum alloy piston, Journal of Alloys and Compounds 812: 152162.
Caputo S., Millo F., Boccardo G., Piano A., Cifali G., Concetto Pesce F., 2019, Numerical and experimental investigation of a piston thermal barrier coating for an automotive diesel engine application, Applied Thermal Engineering 162: 114233.
Reghu V.R., Mathew N., Tilletic P., Shankar V.D., Ramaswamye P., 2020, Thermal barrier coating development on automobile piston material (Al-Si alloy), numerical analysis and validation, Materials Today: Proceedings 22: 1274-1284.
Liu X.F., Wanga Y., Liuc W.H., 2017, Finite element analysis of thermo-mechanical conditions inside the piston of a diesel engine, Journal of Applied Thermal Engineering 119: 312-318.
Mirmohammadi A., Kalhor A., 2017, Studying turbocharging effects on engine performance and emissions by various compression ratios, American Journal of Energy Power Engineering 4(6): 84-88.
Yao Z., Qian Z., 2018, Thermal analysis of nano ceramic coated piston used in natural gas engine, Journal of Alloys and Compounds 768: 441-450.
Pang M., Zhang X., Liu Q., Fu Y., Liu G., Tan W., 2020, Effect of preheating temperature of the substrate on residual stress of Mo/8YSZ functionally gradient thermal barrier coatings prepared by plasma spraying, Journal of Surface & CoatingsTechnology 385: 125377.
Stephens R., Fatemi A., Fuchs H., 2001, Metal Fatigue in Engineering, John Wiley.
Silva F.S., 2006, Fatigue on engine pistons – A compendium of case studies, Journal of Engineering Failure Analysis 13: 480-492.
