Thermal Load Test Method and Numerical Calculation for Ceramic Matrix Composite Turbine Guide Vane

Shen, Xiuli; Qiao, Yifei; Dong, Shaojing; Liu, Xin; Gong, Longdong

doi:10.1007/s10443-018-9730-0

Cited by 10 publications

(6 citation statements)

References 12 publications

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“…It is worth noting that the in-plane properties Coatings 2024, 14, 87 4 of 15 of plain-woven CMCs are typically determined through experimental means, whereas the out-of-plane properties are obtained via numerical analysis. The thermo-mechanical properties of the CMCs material were numerically derived in [37]. As evident from the data, the modulus of CMCs is significantly lower in the through-thickness direction compared to metals, which are generally isotropic materials.…”

Section: Materials Propertiesmentioning

confidence: 99%

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Thermo-Mechanical Stress Distributions in a Ceramic Matrix Composites Turbine Vane Coated with Environmental Barrier Coatings

Chen,

Fang,

Gao

et al. 2024

Coatings

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It is of great significance to obtain an accurate stress assessment when replacing traditional metal components with ceramic matrix composites (CMCs) in turbine engines. The current study aims to investigate the stress characteristics of CMCs turbine vanes with multilayer-structured environmental barrier coatings (EBCs) using numerical simulation techniques. A three-dimensional finite element model of CMCs turbine vanes coated with EBCs was formulated. The distribution of thermal residual stresses generated during the manufacturing process of EBCs and the distribution of stresses under different loading conditions were calculated and compared. The results show that the hoop stress (σ11) and spanwise stress (σ22) in the turbine vanes are significantly higher than the through-thickness stress (σ33) under coupled loads. The maximum hoop stress (σ11) is approximately 346 MPa. The thermal residual stress induced during the EBCs manufacturing process reaches a maximum of approximately 360 MPa. The loading conditions significantly influence the stress distribution of EBCs, and the stress distribution of EBCs exhibits certain regularities at different heights under varying loading conditions. These results enable us to gain a deeper understanding of the failure mechanism of CMCs/EBCs turbine vanes and can improve the optimization capabilities for these components.

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Section: Materials Propertiesmentioning

confidence: 99%

“…experimental means, whereas the out-of-plane properties are obtained via num analysis. The thermo-mechanical properties of the CMCs material were nume derived in [37]. As evident from the data, the modulus of CMCs is significantly lo the through-thickness direction compared to metals, which are generally iso materials.…”

Section: Materials Propertiesmentioning

confidence: 99%

Thermo-Mechanical Stress Distributions in a Ceramic Matrix Composites Turbine Vane Coated with Environmental Barrier Coatings

Chen,

Fang,

Gao

et al. 2024

Coatings

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show abstract

“…In the previous research process, relevant researchers studied the combustion laws of various combustion products through experiments and numerical simulation methods, and finally found the relationship between various laminar combustion velocities of hydrogen/air mixtures. Starting from the correlation, in order to make the numerical simulation results more accurate, this paper adopts the flame velocity formula of IIjima and Takeno for research [9].…”

Section: Hydrogen Fuelmentioning

confidence: 99%

A brief introduction to the typical fuels for SI engine and its future projections

Teng¹

2023

J. Phys.: Conf. Ser.

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Spark Ignition (SI) engine has been widely used and developed in the engineering field due to its high performance and safety. At present, the SI engine has received extensive attention from many experts and scholars and has become a research hotspot and focus in the field of heat engines. This paper studies the development status of SI engines from multiple perspectives. The research status of performance and pollutant emissions of commercial SI engines were analyzed by literature search. The numerical simulation principle and application method of the current SI engine were studied, and the emissions of the traditional engine and the SI engine were compared. It was found that the SI engine has irreplaceable advantages in terms of performance and emissions. In addition, this paper also looks forward to the development of the SI engine, and proposes that the future development of the SI engine should focus on improving its performance; the use of clean fuel is also an important research content of the SI engine.

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“…This paper focuses on the stress analysis of the coatings, so the CMCs substrate was simplified as an orthotropic homogeneous material. The thermal-mechanical properties listed in Table 2 were taken from the literature [25]. Since a two-dimensional analysis model is established in this paper, only the properties in the 1-2 plane, as shown in Figure 1, were necessary.…”

Section: Coating System and Materials Proppertiesmentioning

confidence: 99%

Thermal Stress Analysis of Environmental Barrier Coatings Considering Interfacial Roughness

Fang

Ren

Shi³

et al. 2020

Coatings

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A numerical analysis of the effect of roughness interface on the thermal stress in the environmental barrier coatings for ceramic matrix composites was performed. Based on the concept of representative volume elements, a micromechanical finite element model of the coated composites was established. The rough interfaces between the coating layers were described using sine curves. The cooling process after preparation and the typical service conditions for the CMCs component were simulated, respectively. The results show that the rough interface has little effect on the temperature distribution along the depth direction for the studied T/EBC coatings for SiC/SiC composites. The stress concentration occurs at the rough EBC/BC interface, which is prone to cause delamination cracking. Under typical service conditions, the high temperature can eliminate part of the thermal residual stress. Meanwhile, the thermal gradient will cause large thermal stress in the TBC layer and the stress will result in surface cracks. The stress concentrations appear at the peaks and valleys of rough interfaces. The variation range of thermal stress increases with the roughness amplitude and decreases with the wavelength.

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Thermal Load Test Method and Numerical Calculation for Ceramic Matrix Composite Turbine Guide Vane

Cited by 10 publications

References 12 publications

Thermo-Mechanical Stress Distributions in a Ceramic Matrix Composites Turbine Vane Coated with Environmental Barrier Coatings

Thermo-Mechanical Stress Distributions in a Ceramic Matrix Composites Turbine Vane Coated with Environmental Barrier Coatings

A brief introduction to the typical fuels for SI engine and its future projections

Thermal Stress Analysis of Environmental Barrier Coatings Considering Interfacial Roughness

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