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service life anomalies

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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
..., design deficiencies, material defects, manufacturing/installation defects, and service life anomalies, with examples. The article describes several common charting methods that may be useful in performing an RCA. It also discusses other failure analysis tools, including review of all sources of input...
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
... anomalies in this fracture-critical component is clearly apparent ( Fig. 20 ). As a result of the severity of the pressure cycles in service, the sleeve cannot tolerate surface flaws. Fig. 20 Application-life diagram showing effects of manufacturing-caused surface discontinuities on service life...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004215
EISBN: 978-1-62708-184-9
... will be made on the basis of an assumption of the plant operating and environmental conditions to which the component will be exposed during its service life. Service conditions can vary over the life of plant, so it is important that this service and environmental data are regularly updated so that any...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006336
EISBN: 978-1-62708-179-5
... not necessarily make the part unfit for service. The detectability of an anomaly increases with increasing size. The adequacy of a part for service depends on material properties, load conditions, and flaw size. The goal of NDI is to detect and reject parts that contain flaws, which are anomalies...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003445
EISBN: 978-1-62708-195-5
... for all so-called safe-life structures. Now, fatigue testing is required by the FAA if there is the possibility of widespread fatigue damage in service. To date, most composite structures have shown good fatigue resistance behavior, so there is little likelihood of widespread fatigue damage in service...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... information on fatigue life assessment, elevated-temperature life assessment, and fitness-for-service life assessment. elevated-temperature life assessment fabrication failure analysis fatigue life assessment fitness-for-service life assessment material defects nondestructive inspection stress...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003514
EISBN: 978-1-62708-180-1
... of the basic events. While many reliability analyses involve time, often the problem can be formulated as being time independent or time invariant. For the simple strength ( R )-stress ( S ) case, S could represent the largest stress during the service life and R the strength. The distribution (mean...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006400
EISBN: 978-1-62708-192-4
... productivity), extended machine life, and lower operating costs. For example, because corrosion can lead to unexpected failures that can be costly in terms of repair expenses, environmental damage, and potential harm to humans, CM is indispensable in avoiding these consequences. Generally, the history of CM...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006438
EISBN: 978-1-62708-190-0
... of the component to perform its design function. The most common application is detection of flaws caused either by manufacturing anomalies, service or environmental stresses, or natural material aging. More generally, applications may include estimation of mechanical and material properties, stress/strain...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002392
EISBN: 978-1-62708-193-1
... required for failure, which is obtained from component fatigue tests. In most cases, a component is designed so that the replacement time for that component exceeds the expected service life of the aircraft. However, critically loaded components, such as engine rotors or landing gear, can have much shorter...
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
... observation of the test object surface to evaluate dimensions, color, and presence of surface discontinuities Postmanufacturing inspections, in-service inspections looking for dimensional anomalies, color variation, cracks, pits, etc. Only sensitive to surface flaws Low cost, intuitive. May be enhanced...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003811
EISBN: 978-1-62708-183-2
... effect on the service life of cast equipment, and such detailed information must be provided to make the appropriate materials selection. Many rapid failures are traceable to these details being overlooked—often when the information was available. Selection of the most economical alloy can be made...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003695
EISBN: 978-1-62708-182-5
..., abrasion, and chemical resistance, rubber linings in the range of 3 to 6 mm ( 1 8 to 1 4 in.) thickness can often outperform conventional liquid-applied linings by a performance life of many years. In many installations, rubber linings have a service life expectancy of 25 to 30 years...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003520
EISBN: 978-1-62708-180-1
... service abuses Improper maintenance and repair Environment-material interactions Not all failures are catastrophic. Many failures involve a gradual degradation of properties or excessive deformation or wear until the component is no longer functional long before its design life is reached...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006470
EISBN: 978-1-62708-190-0
... of structures such as airframes and engines, piping and pressure vessels, ships, bridges, motor vehicles, machinery, and jet engines. In-service ultrasonic inspection is used for detecting anomalies (e.g., cracks and corrosion) with potential for failure of railroad-rolling-stock axles, press columns, earth...
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
..., and cathodic or anodic protection. The service life of the affected component can typically be estimated with a reasonable degree of accuracy, and catastrophic failures can be avoided. Localized corrosion, such as crevice and pitting corrosion, intergranular corrosion, selective leaching, erosion-corrosion...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002470
EISBN: 978-1-62708-194-8
... and creep properties for elevated-temperature conditions Fatigue crack initiation of undamaged structure Fail-safe structure must meet customer service life requirements for operational loading conditions. Safe-life components must remain crack-free in service. Replacement times must be specified...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004146
EISBN: 978-1-62708-184-9
...: Is It In-Service Degradation , Service Experience and Life Management in Operating Plants , ASME , PVP- Vol 240 , 1992 , p 13 – 21 98. Esselman T.C. , Marina M. , and Sinha S.K. , Steam Generator Shell Design and Plant Operation to Prevent Cracking , Pressure Vessel Fracture, Fatigue...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006043
EISBN: 978-1-62708-172-6
..., is not necessarily an accurate indicator of long-time performance of a coating. There are numerous examples of coatings that have relatively poor initial adhesion yet have not delaminated over the predicted service life. Conversely, there are examples of coatings that appeared to have excellent initial adhesion...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006465
EISBN: 978-1-62708-190-0
... to correlate local material property variability and microporosity distributions, as well as larger and more traditional forms of defects with life, and hence, give science-based criteria for base material standards and limits for allowables and required anomaly or defect detection capabilities. The desire...