Experimental Evaluation of Overload Capability of an Annular Combustor Casing of a Gas Turbine Engine

Panigrahi, S. K.; Sarangi, Niranjan; Chandrasekhar, U.

doi:10.1007/s40799-016-0083-z

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…According to the excellent high-temperature resistance and mechanical properties, super-alloy is widely used in key structures such as aero-engine combustion chamber casing, flame cylinders, turbine blades, etc. [1][2] . GH4169 super-alloy is widely used in the structure of combustion chamber casing due to its high strength and good welding performance [3] .…”

Section: Introductionmentioning

confidence: 99%

The influence of electron beam welding technology on mechanical properties of GH4169 welded joints

Yang¹,

Liu

Zhang³

et al. 2023

J. Phys.: Conf. Ser.

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Super-alloy GH4169 and related welded structures were widely used in the aero-engine industry region. Vacuum electron beam welding is one of the most advanced welding technologies, and the influence of the mechanical property caused by the welding technology still needs further research. Firstly, the hardness, microstructure, and tensile properties of the GH4169 electron beam welded joint were tested. After electron beam welding and two-stage aging treatment, the weld zone was strengthened and its hardness is higher than that of the base metal zone. The microstructure characterization results showed that the grain size of the weld and heat-affected zone was larger than that of the base metal. The tensile results show that the static properties of the welded joint are similar to that of the base metal, and the residual height has no obvious effect on the static strength of the welded joint. The high-temperature creep properties of GH4169 electron beam welded joints with residual height were tested. The results show that residual height will lead to a transient fracture of welded joints under relatively safe service conditions. The fatigue performance of GH4169 welded joints with and without residual height was tested respectively. The results show that the fatigue life of the welded joints without residual height was about 10 times longer than that of the welded joints with residual height under the same stress level, and for the welded joint with residual height, the residual height position will become the main fatigue crack source.

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Section: Introductionmentioning

confidence: 99%

The influence of electron beam welding technology on mechanical properties of GH4169 welded joints

Yang¹,

Liu

Zhang³

et al. 2023

J. Phys.: Conf. Ser.

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show abstract

“…In order to study the nonlinear dynamic responses of the aero-engine stator casing, a variety of methods have been proposed. For example, the finite element method (FEM) is often used to simulate the large-scale aero-engine stator casing under different loading conditions [10][11][12][13]. This method can capture the nonlinear dynamic responses of the casing more accurately.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Vibration Transmission Characteristics of the Aero-Engine Casing System by Rotating Force Exciter

et al. 2023

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This work aims to study the dynamic characteristics of an entire aero-engine casing by experiments using a new type of rotating exciter. New vibration sensor layout rules are proposed according to experimental results and vibration transmission characteristics. The vibration response of the aero-engine casing is carried out, and the vibration response of different casing measuring points is also studied. The finite element model of the engine casing’s structure is established to obtain the natural frequency of the whole aero-engine casing, which agrees well with the experimental measurement. We find that the vibration acceleration transmission value of the radial measuring point of bearing No. 1, but not the fan sensor, is more suitable for detecting the running state of the fan rotor. In addition, the sensor in the intermediate casing can detect the vibration of the high-pressure rotor. Bolt loosening of the flange has little effect on the vibration transmission characteristics of the casing. This work aims to provide experimental data of whole aero-engine vibration characteristics with a new rotating exciter for the vibration test, which can help optimize the location of the vibration transducer for the engine and the assembly technology design for the whole engine structure.

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A short review on machining deformation control of aero-engine thin-walled casings

Wang

Zhao

Ding

et al. 2022

Int J Adv Manuf Technol

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Experimental Evaluation of Overload Capability of an Annular Combustor Casing of a Gas Turbine Engine

Cited by 7 publications

References 15 publications

The influence of electron beam welding technology on mechanical properties of GH4169 welded joints

The influence of electron beam welding technology on mechanical properties of GH4169 welded joints

Investigation of the Vibration Transmission Characteristics of the Aero-Engine Casing System by Rotating Force Exciter

A short review on machining deformation control of aero-engine thin-walled casings

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