Journal ArticleDOI
Experimental crack propagation and failure analysis of the first stage compressor blade subjected to vibration
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TLDR
In this paper, the results of experimental vibration tests of the helicopter turbo-engine compressor blades were presented for selected undamaged blades, without existence of preliminary cracks or corrosion pits.About:
This article is published in Engineering Failure Analysis.The article was published on 2009-10-01. It has received 100 citations till now. The article focuses on the topics: Fracture mechanics & Vibration.read more
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Vibration based damage detection of rotor blades in a gas turbine engine
TL;DR: In this article, the authors describe the problems concerning turbine rotor blade vibration that seriously impact the structural integrity of a developmental aero gas turbine, where the blades are fabricated from nickel base super alloy through directionally solidified investment casting process.
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Vibration response analysis of a cracked rotating compressor blade during run-up process
TL;DR: In this article, typical fatigue cracks analyzed in referenced crack propagation path simulation and experimental tests are introduced into the ANSYS finite element (FE) model of a rotating compressor blade, which accounts for the influence of rotational effects.
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An investigation of premature fatigue failures of gas turbine blade
Wassim Maktouf,Kacem Saï +1 more
TL;DR: In this article, a failure of a first stage compressor blade of a Gas Turbine Generator in a Gas Treatment plant caused severe mechanical damage to the compressor section and power supply troubles.
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The fatigue of impellers and blades
TL;DR: In this paper, the status and progress of fatigue research on impellers and blades were systematically introduced through reviewing fatigue failures, numerical simulations of fatigue, and fatigue tests of impeller and blades in several typical turbomachines.
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Crack propagation analysis of mechanically damaged compressor blades subjected to high cycle fatigue
TL;DR: In this paper, the results of experimental crack propagation analysis of damaged compressor blades of the helicopter engine, subjected to high cycle fatigue, were presented, and the main result of presented investigation is the crack growth plot obtained for the blade including defects similar to foreign object damage.
References
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Failure analysis of turbine disc of an aero engine
TL;DR: In this article, the failure analysis of the turbine disc of an aero engine, installed in a certain type of aircraft, was presented, where high stress zones were found at the region of the lower fir-tree slot, where the failure occurred.
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Failure analysis of Ti6Al4V gas turbine compressor blades
TL;DR: In this article, the failure mechanism of Ti6Al4V compressor blades of an industrial gas turbine was analyzed by means of both experimental characterisations and numerical simulation techniques Several premature failures occurred in the high pressure section of the compressor due to the fracture of the blade roots.
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Analysis of a J69-T-25 engine turbine blade fracture
TL;DR: In this paper, the fracture of a turbojet engine turbine blade was investigated and it was inferred that the root cause of cracking and excessive heat damage might be attributed to eccentricity of the shaft resulting from various reasons such as misalignment, uneven wear of bearing elements and mismatch in clearance.
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Failure analysis of gas turbine blades in a thermal power plant
Nurten Vardar,Ahmet Ekerim +1 more
TL;DR: In this paper, a case study of failure analysis of a 40MW gas turbine blade made of Udimet 500 is presented, where the cause of failure is found to be intergranular cracks which started during exposure to high temperature.
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Analysis of superalloy turbine blade tip cracking during service
TL;DR: In this paper, the premature tip cracking of the HPT first stage blade is investigated and it is shown that the premature cracking of turbine blade tip is caused by a combination mechanism of environment and thermal stress.