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Exhaust systems

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001052
EISBN: 978-1-62708-214-3
..., and no further cracking occurred. Aircraft engines Bellows Exhaust systems Flexible couplings Weldments 321 UNS S32100 Fatigue fracture The flexible bellow in a type 321 stainless steel welded exhaust hose assembly exhibited poor resistance to cracking and failed...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001304
EISBN: 978-1-62708-215-0
.... The joints had been produced using the mechanized gas-metal arc welding process. Cracking was attributed to improper control of welding parameters, and failure was attributed to weld defects. Air intakes Corrosion-resistant steels Diffusers Exhaust systems Low-cycle fatigue Transition...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001832
EISBN: 978-1-62708-241-9
... purge ventilation system designed to continuously remove hydrogen gas and vapors without letting radionuclides escape. Several intergranular cracks were discovered in the vent pipe of one such system. The pipe, made of galvanized steel sheet, connects to an exhaust fan downstream of high-efficiency...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... of a dark mass of grain fragments. Original magnification: 1⅔× This article has provided a framework from which a prospective analyst can begin to study the fracture of a component of interest in a failure investigation. The topics introduced here are not exhaustive and are meant as an...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... analysis, it is only necessary to list those embrittling metals that are active for commercially important metals and alloys and that are liable to be encountered in service ( Table 1 ). This list is not exhaustive, and it should not be assumed that the absence of a potential embrittler from the table...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001785
EISBN: 978-1-62708-241-9
... maintenance worker was attempting to loosen exhaust system bolts on a large diesel engine using the open end portion of a 3/4-inch (19 mm) wrench. The open end wrench was required because the design of the exhaust system prevented the use of a box end wrench. When the worker applied his full strength, the jaw...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001609
EISBN: 978-1-62708-229-7
... bypass system or a recirculation system that partially redirects water from its outlet back to its inlet. This helps maintain the CT exhaust gas temperature flowing over the harps and maintains temperatures above the acid dewpoint temperature. The addition of a recirculation system causes a minor...
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
... the casing. The marriage bolts of the rotor, the second stage buckets, and the shaft experienced high degradation. Approximately all turbo-compressor components—including inlet casing, compressor casing, discharge casing, turbine shell, exhaust hood, exhaust diffuser, exhaust plenum, inlet plenum, ACC...
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
...) NGVs, LP turbine rotor disk and shaft coupled to fan, rotor support system, exhaust mixer and cone, afterburner system, gear box, and accessories. Systematic investigation of the reported problem was carried out to determine the root cause of the failure before corrective measures could be taken...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001328
EISBN: 978-1-62708-215-0
... staggered rows of vertical tubes. In the radiant section, tube skin temperature of about 850 °C (1562 °F) is maintained by multi-sidewall radiant burners mounted in vertical tiers of horizontal rows. An induced draft fan in the exhaust stack breeching moves the combustion air. An endothermic catalytic...
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
... and then advancing the engine speed. High-exhaust gas temperature, low fuel flow, RPM hang up, loud bangs, and engine vibration are symptoms of stalls [ 5 ]. There are two kinds of troubleshooting procedure for stall by J79 engine technical order. The difference between the two is decided by the...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001341
EISBN: 978-1-62708-215-0
... from these headers. The assembly is one of several exchangers suspended in an exhaust flue downstream of a methanol reformer. The internal coil design pressure is 8.96 MPa (1300 psig) at 649 °C (1200 °F) and flue temperatures are about 988 °C (1810 °F). Fig. 1 Elevation side view of the steam...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001473
EISBN: 978-1-62708-229-7
... with the public authority supply. The set comprised a back-pressure turbine of 3,000 kW capacity, running at 10,000 r.p.m. and coupled through the gearbox to an alternator running at 1,500 r.p.m. The turbine exhausted into the works' steam main and the alternator normally carried the whole of the...
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
... hollow square tower that only contained stairs. The tower went up past the rooftop much like a church steeple. In the area of tower that stood above the roof, directly across from the furnace exhaust stacks, there was a three ft diameter circular window. It was discovered that this window was vibrating...
Book Chapter

Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001412
EISBN: 978-1-62708-229-7
..., 3,000 r.p.m. turbine of continental manufacture, built in 1942. Following the discovery of a crack in the root of a blade in the last wheel at the h.p. cylinder end of the double exhaust l.p. rotor, and that an adjacent blade had cracked in the region of the inner lacing wire, the two defective blades...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... , with permission from Elsevier. (b) Coupled high-cycle fatigue and bithermal fatigue waveform While certainly not an exhaustive list, the example waveforms provided elucidate the types of testing that may be performed to induce TMF damage. It should be noted that TMF testing is a nontrivial task...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... Testing and Evaluation , Volume 8 of the ASM Handbook , 2000. Table 1 presents the most commonly used tests, the property or properties each provides, and the limitations. The list of techniques discussed herein is the most commonly used by failure analysts but is by no means exhaustive. The focus of...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... contact is acceptable, but wear debris leaving the contact and contaminating the rest of the system or the product it produces is unacceptable. The drive for reduced oil consumption and exhaust emissions has led to a reduction in the amount of lubricant present in the air stream in automotive engines...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... occurred during vehicle operation, but it was consistent with the forces of the collision. Thus, the collision caused deformation followed by fracture. Macroscopic suggestions of a fatigue crack could be explained by geometric stress concentrators. A component of a piping system is erroneously...
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
... corrosion mechanisms insidious. If undetected, they can lead to catastrophic system failures. Certain environments induce specific corrosion failure modes. Hydrogen damage, liquid- and solid-metal-induced embrittlement, microbiologically influenced corrosion (MIC), and high-temperature corrosion are...