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compressor blades

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001359
EISBN: 978-1-62708-215-0
... present in both include titanium, aluminum, molybdenum, tin, silicon, iron, calcium, and sodium. Abstract The cause of low fatigue life measurements obtained during routine fatigue testing of IMI 550 titanium alloy compressor blades used in the first stage of the high-pressure compressor...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001757
EISBN: 978-1-62708-241-9
...The extent of the compressor damage Table 1 The extent of the compressor damage 15th 16th 17th Total Blade  Damaged – 112 82 194  Fractured – 7 33 40 Vane  Damaged 88 86 – 174  Fractured – 2 – 2 Nominal and measured chemical composition...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... of compressor and turbine blades ( Ref 1 ). Creep failure of turbine blades, mostly related to issues with cooling, was found to be the second-most costly damage mode. The failure of rotating components tends to be more costly because their significant kinetic energy results in greater collateral damage...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001367
EISBN: 978-1-62708-215-0
... the cracks will grow; however, this impeller material is tough and should resist sudden, brittle failure. Caustic cracking Chemical processing equipment Compressor blades Sodium hydroxide, environment 4320 UNS G43200 Stress-corrosion cracking Handbook of Case Histories in Failure Analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001576
EISBN: 978-1-62708-219-8
... operation. The casing of the fan was vibrated at 10 to 60 Hz. Peak stress easily overcame 30 MPa, which was enough to initiate cracking. The fracture surfaces and starting position were the same as those on the failed fan. It was concluded that the exciting force from an air compressor caused blade failure...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001756
EISBN: 978-1-62708-241-9
... of intergranular failure consisting of grain boundary voids, high-temperature failure, i.e., creep failure is ruled out. The absence of marks, scratches, and signatures in intake, fan, and compressor modules confirms that no foreign object has entered the engine causing the failure in HP turbine blades. As all...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001470
EISBN: 978-1-62708-220-4
... Abstract One 49-in. impeller of a two-stage centrifugal air compressor disrupted without warning, causing extensive damage to the casings, the second impeller, and the driving gear box. Prior to the mishap, the machine had run normally, with no indications of abnormal vibration, temperature...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001362
EISBN: 978-1-62708-215-0
... examples of cracking which was observed in the blade attachment area. The cracks have propagated from pit bottoms. Fig. 5 These photomicrographs show typical examples of cracking which is primarily intergranular in nature Fig. 6 Photomicrographs showing the morphology of cracking...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001358
EISBN: 978-1-62708-215-0
.... Most of the cracks were located directly below the shroud/blade seal weld. Several welds, along with their respective fracture faces, were removed and prepared for examination. The specifications for manufacturing the compressor diaphragms were unknown. The parts were made by the original equipment...
Image
Published: 01 December 2019
Fig. 1 Schematic of the compressor section of the J79 engine. The yellow or shaded section indicates the area of the damaged and fractured blade More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001081
EISBN: 978-1-62708-214-3
...History of dysfunction lives and mission severity factors for the compressor disk Table 1 History of dysfunction lives and mission severity factors for the compressor disk Date Baseline dysfunction life, h Mission severity factor Dysfunction life incorporating mission severity, h...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006821
EISBN: 978-1-62708-329-4
... Handbook , 2003. Case Study 5: Failure Analysis of Engine Compressor Rotors Two aircraft engine compressor rotors sustained damage during operation. Blades from both rotors were found sheared off, and several blades were lifted from the dovetail portion of the drum. In one of the rotors, all...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... in the turbine industry. When turbine generators are brought to operating speed there are several speeds that match the natural frequencies of the various blades. The natural frequency of a blade will depend on blade length as well as other material/geometric parameters. It is necessary, due to thermal...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... of the situation and the risk associated with additional failures. In most cases, one desires to identify root causes that are reasonably correctable. An example of the variety of possible root causes of an electric motor driven compressor assembly is provided in Table 3 ( Ref 22 ). Possible causes of electric...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001830
EISBN: 978-1-62708-241-9
... all turbo-compressor components. Based on their initial review, investigators believed that the failure originated at the interface between two shaft sections held together by 24 marriage bolts. Visual and SEM examination of several bolts revealed extensive deterioration of the coating layer...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001354
EISBN: 978-1-62708-215-0
... the high-pressure portion of a steam turbine-powered compressor after nondestructive testing revealed cracks in the shoulder of the disk during a scheduled outage. Samples containing cracks were examined using various methods. Multiple cracks, primarily intergranular were found on the inlet and outlet...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001758
EISBN: 978-1-62708-241-9
... Fig. 1 Data showing improvements in stress-rupture life for the equiaxed (EQ), directionally solidified (DS), and single crystal (SX) type castings Fig. 2 Macroetched turbine blades showing characteristic grain structure for equiaxed (EQ), directionally solidified (DS), and single...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... that causes “g” forces that are outside of the operating envelope of the aircraft. Another example is inlet-flow blockage on a high-performance air compressor resulting in excessive cyclic loads applied to the blades, causing blade ( Fig. 21 , 22 ) and drive shaft ( Fig. 23 ) failures. Failure analysis...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... Abstract This article focuses on the life assessment methods for elevated-temperature failure mechanisms and metallurgical instabilities that reduce life or cause loss of function or operating time of high-temperature components, namely, gas turbine blade, and power plant piping and tubing...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001281
EISBN: 978-1-62708-215-0
... the alloys to be attacked by the gas at increased rates. The deposit-modified, gas-induced, high-temperature degradation of alloys is called hot corrosion. Blades and vanes located in the hot gas path of a turbine are subject to hot corrosion. A layer-type corrosion (type II), characterized by an uneven...