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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0048250
EISBN: 978-1-62708-236-5
...Abstract Abstract A farm-silo hoist used as the power source for a homemade barn elevator failed catastrophically from destructive wear of the worm. The hoist mechanism consisted of a pulley attached by a shaft to a worm that, in turn, engaged and drove a worm gear mounted directly on the hoist...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001326
EISBN: 978-1-62708-215-0
...Abstract Abstract Pressure testing of a batch of AISI type 316L stainless steel thermowells intended for use in a nuclear power-plant resulted in the identification of leakage at the tips in 20% of the parts. Radiography at the tip region of representative thermowells showed linear indications...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001091
EISBN: 978-1-62708-214-3
... analysis indicated that the mechanism of fracture initiation was torsional fatigue. Intermittent deceleration and acceleration resulting from power surges during operation of the turbine caused torsional vibration and was considered the most probable source of the required cyclic stress. Final failure took...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048708
EISBN: 978-1-62708-229-7
...Abstract Abstract The horizontal heat-exchanger tubes made of copper alloy C70600, in one of two hydraulic-oil coolers in an electric power plant, leaked after 18 months of service. River water was used as the coolant in the heat-exchanger tubes. Several nodules on the inner surface and holes...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001507
EISBN: 978-1-62708-217-4
...Abstract Abstract A large four-engine aircraft was on a cargo flight at night when a loud bang was heard, accompanied by a loss of power from both engines on the left side. After an emergency landing, it was discovered that the propellers from both left side engines were missing. The initial...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0006900
EISBN: 978-1-62708-225-9
... of MoS 2 lubricant for 5 days One of the half-hard type 301 specimens that was MoS 2 treated and charged with hydrogen from an outside power source cracked after 5 days. All the other half-hard 301 specimens showed cracks after hydrogen charging regardless of the presence of M0S2 or the method...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... as a possible cause of failure in the piping system. The piping system was inspected for possible sources of ac or dc current flow. An external battery was used to impress a voltage. Voltage and current were recorded with the external power supply applied and removed. There was no evidence of stray currents...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... solution with an oxidizing power corresponding to point A and a corrosion rate corresponding to this point. If the oxidizing power of this solution is increased, say, by adding oxygen or ferric ions, the corrosion rate of the metal will increase rapidly. Note that for such a metal, the corrosion rate...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006796
EISBN: 978-1-62708-295-2
... and that in Fig. 2(d) corresponds to the acceleration stage. Fig. 2 Erosion model. (a–c) Incubation stage. (d) Acceleration stage. Source: Ref 29 In predicting the lifetime of pipe-wall thinning of nuclear/fossil power plants, the erosion rate is an important factor to be considered. Therefore...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... and Incoloy 800H in molten 34.42wt%NaCl-5.58wt%LiCl at 650 and 700 °C (1200 and 1290 °F) under nitrogen. Corrosion increases with increasing temperature. Source: Ref 77 Fig. 19 Schematic of nominal design of concentrating solar power system using molten salts. Solar energy is concentrated...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
... gears, helical gears generate axial thrust, which causes slight loss of power and requires thrust bearings. Fig. 2 Sections of a helical gear (a) and a helical rack (b). Herringbone Gears Herringbone gears ( Fig. 3a ), sometimes called double helical gears, are used to transmit motion...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
..., films, nonmetals, composites, assemblies Acoustic emission (AE) Multiple distributed sensors detect and triangulate AE stress-wave source in response to mechanical or thermal stress. Corrosion, stress-corrosion cracking, weld cracking, creep and fatigue cracking Sensitive to noise and vibration...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0060144
EISBN: 978-1-62708-234-1
...Abstract Abstract Two steam-methane reformer furnaces were subjected to short-time heat excursions because of a power outage, which resulted in creep bulging in the Incoloy 800 outlet pigtails, requiring complete replacement. Each furnace had three cells, consisting of 112 vertical tubes per...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0090881
EISBN: 978-1-62708-229-7
...Abstract Abstract A power plant using two steam generators (vertical U-tube and shell heat exchangers, approximately 21 m (68 ft) high with a steam drum diameter of 6 m (20 ft)) experienced a steam generator tube rupture. Each steam generator contained 11,012 Inconel alloy 600 (nickel-base...
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
... low across the spectrum, and that the levels of vibration on the microscope were significant. Examination of the vibration spectra revealed peaks at 225 cpm and 435 cpm. To trace the source of the problem, vibration levels were measured on the top of the microscope's isolator and on the structural...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003546
EISBN: 978-1-62708-180-1
... and steady-state stresses as a function of time. The periodic reduction in throttle flow is due to reduced power requirements during some portions of service duty cycle. However, these fluctuations are shown to have negligible effect on the magnitude of the stresses. Source: Ref 14 Stress Analysis...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001826
EISBN: 978-1-62708-241-9
... plants. More than 5000 MW of electricity is produced through the corporation’s 13 dual purpose power/water cogeneration plants [ 5 ]. The recent boiler tubes failure have been a cause of concern to the SWCC power plant engineers [ 6 , 7 ]. The present investigation deals with the failure of back wall...
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
... exhibited deterioration of the leading and trailing edges. Circumstances Leading to Failure This particular set of nozzles had operated for 12,000 to 14,000 h. The damaged nozzles were found during an inspection for possible causes of significant power deterioration over the period of a year. Most...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... creep deformation and intergranular cracking in a jet-engine turbine blade. Courtesy of J. Schijve Fig. 10 Power-law dependence of creep crack growth with K in less ductile materials. Source: Ref 19 Fig. 16 Grain-boundary carbide films in a Waspaloy forging. The films...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003515
EISBN: 978-1-62708-180-1
.... Ammirato F. , NDE Performance Demonstration in the US Nuclear Power Industry-Applications, Costs, Lessons Learned, and Connections to NDE Reliability , Proc. European-American Workshop on Determination of Reliability and Validation Methods on NDE , Deutsche Gesellschaft fur Zerstorungsfreie Prufung...