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Rotor blade

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Published: 01 January 2001
Fig. 4 EC-120 helicopter rotor application. (a) Rotor blade sleeve. The part is made of forged 2009/SiC/15p discontinuously reinforced aluminum (DRA). The scale below the part is 30 cm long. (b) Rotor assembly showing the DRA blade sleeves. Photos courtesy of DWA Aluminum Composites, Inc. More
Image
Published: 01 January 2002
Fig. 6 Fatigue cracking of a helicopter tail rotor blade. (a) Scanning electron micrograph of the blade showing lead wool ballast in contact with the 2014-T652 aluminum spar bore cavity wall at the failure origin ∼13×. (b) Greater magnification (∼63×) in this same area shows the multiple pits More
Image
Published: 15 January 2021
Fig. 6 Fatigue cracking of a helicopter tail rotor blade. (a) Scanning electron micrograph of the blade showing lead wool ballast in contact with the 2014-T652 aluminum spar bore cavity wall at the failure origin. Original magnification: ~13×. (b) Greater magnification (~63×) in this same area More
Image
Published: 01 January 1997
Fig. 11 Stress contour plot of first-stage silicon nitride turbine rotor blade for a natural-gas-fired industrial turbine engine for cogeneration. The blade is rotating at 14,950 rpm. Courtesy of Solar Turbines Inc. More
Image
Published: 01 January 2024
Fig. 9 Fatigue failure of a Sikorsky S-61N helicopter pressurized rotor blade spar. (a) Details of the fatigue fracture surface indicating the phases of the spar fatigue life and the locations (arrows) of fractographs for striation spacing measurements. (b) Scanning electron microscope (SEM More
Image
Published: 01 January 1990
Fig. 9 1000-h creep rupture strength of turbine rotor and compressor blade alloys. Source: Ref 14 More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003467
EISBN: 978-1-62708-195-5
... deal mainly with structures that exhibit an initial material and/or manufacturing defect or failures that are most prevalent and most easily solved. The components include helicopter rotor blade, composite wing spar, and aircraft rudder. aircraft rudders composite wing spar helicopter rotor...
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Published: 01 January 1990
Fig. 1 Shaped holes, turbulators, pin fins, and other techniques used in turbine rotor blade cooling More
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Published: 01 December 2004
Fig. 12 Three pieces of honeycomb cut with a diamond wire saw. Note the absence of burrs and breakout. From left: titanium; section from helicopter rotor blade consisting of plastic, paper honeycomb, epoxy, stainless steel screws, and Kevlar; extruded ceramic honeycomb used in automotive More
Image
Published: 01 August 2018
Fig. 31 (a) Computed tomography (CT) image across a sample helicopter tail rotor blade showing outer fiberglass airfoil and center composite spar. (b) Planar reformation through the composite spar from a series of CT slices. The dark vertical lines are normal cloth layup boundaries, while More
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000616
EISBN: 978-1-62708-181-8
..., crescent-shaped fatigue-crack area visible in Fig. 835 , to ductile dimples. SEM, 225× Fig. 839 A gas-producer turbine rotor cast of alloy 713LC that fractured after 440 h of service, as the result of hot corrosion fatigue. Fracture was abrupt, with three blades being thrown off. See Fig. 841...
Image
Published: 01 January 2002
Fig. 28 Failed compressor rotor. Arrows indicate fractured portions of blades. 36× More
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Published: 15 January 2021
Fig. 21 Failed compressor rotor. Arrows indicate fractured portions of blades. Original magnification: 36 × More
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 2024
DOI: 10.31399/asm.hb.v12.a0006848
EISBN: 978-1-62708-387-4
... are effectively CA despite the overall VA load history. Examples of service and full-scale fatigue test problems that have proven amenable to QF constant-amplitude FCG analyses are vibratory fatigue in helicopter rotor blades ( Ref 44 , 45 ) and so-called multiple-site fatigue damage in transport aircraft...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 2024
DOI: 10.31399/asm.hb.v12.9781627083874
EISBN: 978-1-62708-387-4
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004133
EISBN: 978-1-62708-184-9
...) and ultrasupercritical (USC) power plants. These components include high-pressure steam piping and headers, superheater and reheater tubing, water wall tubing in the boiler, high-and intermediate-pressure rotors, rotating blades, and bolts in the turbine section. The article reviews the boiler alloys, used in SC and USC...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... testing. Gas Turbine Components The successful performance of ceramic components has been demonstrated in gas turbine engines. The major efforts have been directed toward turbine rotor development, specifically one-piece rotor/blade components of both radial inflow and axial flow configurations...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0007019
EISBN: 978-1-62708-439-0
... and Modular Enabled Rotor Blades and Integrated Composites Assembly (AMERICA)” is also funded by the DOE. It is being led by GE and partners ORNL, NREL, and LM Wind Power. The goal of this project is to develop and demonstrate an integrated AM process for novel, high-performance blade designs for large rotors...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004155
EISBN: 978-1-62708-184-9
... been redesigned and replaced ( Ref 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ). Many LP rotors with shrunk-on discs have been replaced by integral or welded rotors. Weld repair techniques for the disc-blade attachment areas were developed, including weld repair of the low-alloy steel disc...
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Published: 30 August 2021
Fig. 1 Failed gas turbine rotor. From left to right: first-, second-, and third-stage turbine blades. The failure originated in the second stage; fragments of the second-stage blades damaged the downstream third-stage blades. The first-stage blades were relatively undamaged. More