Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests

Reusable spacecraft is increasingly attracting researchers’ attention. However, the experimental investigations on the turbine blade of the rocket engine are rarely published. Thus, the fatigue of a small impulse rocket turbine blade is explored in the current work. First, the specimen and the elect...

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Autores principales:	Shijie Liu, Guozhu Liang, Jichao Liu, Yichuan Yang, Hui Wang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/b18f5030b20b401781c6f3604e7d55a0
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spelling	oai:doaj.org-article:b18f5030b20b401781c6f3604e7d55a02021-11-15T01:19:07ZResearch on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests1687-597410.1155/2021/9497683https://doaj.org/article/b18f5030b20b401781c6f3604e7d55a02021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/9497683https://doaj.org/toc/1687-5974Reusable spacecraft is increasingly attracting researchers’ attention. However, the experimental investigations on the turbine blade of the rocket engine are rarely published. Thus, the fatigue of a small impulse rocket turbine blade is explored in the current work. First, the specimen and the electrode of electrical discharge machining are carefully designed. Then, the electrical discharge machining is used to machine the specimen. To study the fatigue properties, the finite element analyses are separately performed on the blade model and the specimen. Based on the numerical results, a fatigue test is carried out to reproduce the most vulnerable position. Finally, the microstructural structures of the specimen are detected using the scanning electron microscope (SEM). Results show that (1) different from the aviation field, the specimen is unable to be machined with the welding method because it destroys the crucial details and the mechanical properties; (2) the maximum plastic strain is present at the leading edge close to the hub, at which a 760 μm corner crack appears at the 10113th fatigue cycle. This work provides a feasible method of using the EDM process to machine specimen for the small impulse turbine blade.Shijie LiuGuozhu LiangJichao LiuYichuan YangHui WangHindawi LimitedarticleMotor vehicles. Aeronautics. AstronauticsTL1-4050ENInternational Journal of Aerospace Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	Motor vehicles. Aeronautics. Astronautics TL1-4050 Shijie Liu Guozhu Liang Jichao Liu Yichuan Yang Hui Wang Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests
description	Reusable spacecraft is increasingly attracting researchers’ attention. However, the experimental investigations on the turbine blade of the rocket engine are rarely published. Thus, the fatigue of a small impulse rocket turbine blade is explored in the current work. First, the specimen and the electrode of electrical discharge machining are carefully designed. Then, the electrical discharge machining is used to machine the specimen. To study the fatigue properties, the finite element analyses are separately performed on the blade model and the specimen. Based on the numerical results, a fatigue test is carried out to reproduce the most vulnerable position. Finally, the microstructural structures of the specimen are detected using the scanning electron microscope (SEM). Results show that (1) different from the aviation field, the specimen is unable to be machined with the welding method because it destroys the crucial details and the mechanical properties; (2) the maximum plastic strain is present at the leading edge close to the hub, at which a 760 μm corner crack appears at the 10113th fatigue cycle. This work provides a feasible method of using the EDM process to machine specimen for the small impulse turbine blade.
format	article
author	Shijie Liu Guozhu Liang Jichao Liu Yichuan Yang Hui Wang
author_facet	Shijie Liu Guozhu Liang Jichao Liu Yichuan Yang Hui Wang
author_sort	Shijie Liu
title	Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests
title_short	Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests
title_full	Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests
title_fullStr	Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests
title_full_unstemmed	Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests
title_sort	research on the fatigue of small impulse turbine blade based on the numerical simulation and experimental tests
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/b18f5030b20b401781c6f3604e7d55a0
work_keys_str_mv	AT shijieliu researchonthefatigueofsmallimpulseturbinebladebasedonthenumericalsimulationandexperimentaltests AT guozhuliang researchonthefatigueofsmallimpulseturbinebladebasedonthenumericalsimulationandexperimentaltests AT jichaoliu researchonthefatigueofsmallimpulseturbinebladebasedonthenumericalsimulationandexperimentaltests AT yichuanyang researchonthefatigueofsmallimpulseturbinebladebasedonthenumericalsimulationandexperimentaltests AT huiwang researchonthefatigueofsmallimpulseturbinebladebasedonthenumericalsimulationandexperimentaltests
_version_	1718429004349833216

Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests

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