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lifetime prediction

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Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005950
EISBN: 978-1-62708-166-5
..., applications, data sources, drawbacks, and possible resolutions, rather than on theoretical and mathematical modeling. Most of the material presented is concentrated on the simulation of the heating, blank/through, and case hardening of low-alloy steels for prediction of heat treatment defects such as...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... these will have to be accounted for in the design calculations. The basic purpose of CARES/LIFE is to predict the lifetime reliability of a ceramic component. It does this by modeling slow crack growth and calculating the probability of failure as a function of service time. In particular, it can...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... during their lifetime. This article focuses on fractography of fatigue. It provides an abbreviated summary of fatigue processes and mechanisms: fatigue crack initiation, fatigue crack propagation, and final fracture,. Characteristic fatigue fracture features that can be discerned visually or under low...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003024
EISBN: 978-1-62708-200-6
... Abstract This article discusses the deformation and viscoelastic characteristics of plastics as polymeric materials, focusing on the test methods used for the evaluation of their mechanical properties, methods available for analytically predicting the deformation response of polymers, and the...
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
..., temperature-assisted grain-boundary evolution, and temperature-driven surface oxidation, among other things. This article discusses some of the major aspects and challenges of dealing with TMF life prediction. It describes the damage mechanisms of TMF and covers various experimental techniques to promote TMF...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004028
EISBN: 978-1-62708-185-6
... Abstract This article outlines several polycrystal formulations commonly applied for the simulation of plastic deformation and the prediction of deformation texture. It discusses the crystals of cubic and hexagonal symmetry that constitute the majority of the metallic aggregates used in...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006443
EISBN: 978-1-62708-190-0
... failure is imminent. Otherwise, crack growth laws of the form da / dN = A(Δ K ) m (where N is the number of stress excursions, and A and m are constants) can be used to estimate the safe life available before catastrophic failure. Fig. 18 Methodology of lifetime prediction for metal parts...
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
... previous experimental studies ( Ref 21 – 36 ) were directed at the terminal stage of erosion, because it plays an important role in predicting the remaining lifetime of pipe wall for applications in nuclear/fossil power plants under the influence of LDI erosion. However, erosion behavior in the incubation...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005403
EISBN: 978-1-62708-196-2
... approach for CDRX to predict microstructural evolutions occurring during hot deformation, along with an illustration of the main features of the CDRX mesoscale model. recrystallization static recrystallization dynamic recrystallization continuous dynamic recrystallization discontinuous dynamic...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005658
EISBN: 978-1-62708-198-6
.... To exacerbate matters, the nonlinear stress-strain response of Nitinol and the stress-induced phase transformations limit the usefulness of traditional lifetime predictive tools. The combination of these two factors has caused fractures to become an all too commonplace phenomenon. Deriving...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005420
EISBN: 978-1-62708-196-2
... of transient three-dimensional finite-element analysis of the copper mold and its support structure during cyclic loading with measured fatigue cycle-to-failure data ( Ref 38 ). In addition to adopting practices to lower the maximum surface temperature, the mold lifetime was predicted to increase by...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005686
EISBN: 978-1-62708-198-6
..., the process presented in ISO 10993-1 and described in this article will aid in the selection of optimal materials and control the uniformity of those materials throughout the lifetime of the device. If appropriate care is taken to mimic the critical controlling factors, in vitro material testing can...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005405
EISBN: 978-1-62708-196-2
..., which considers propagation of pre-existing cracks. In reality, both approaches are relevant to modeling total fatigue lifetime of components. Different industry sectors conventionally design components for fatigue resistance with a focus either on crack initiation or crack propagation. Figure 1...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... separation of the damage calculation and lifetime assessment into the stages of crack initiation and cyclic crack propagation. Because of the still-existing weaknesses of lifetime prediction with the—even modified—damage-accumulation theories, the behavior of structures under variable-amplitude loading...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005675
EISBN: 978-1-62708-198-6
... solution Methods exist for lifetime predictions and statistical design of proof tests for load-bearing ceramics. Weibull statistics that deal with failure probability are most frequently employed. Applications of these techniques show that specific prosthesis load limits can be set for an Al 2 O 3...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003088
EISBN: 978-1-62708-199-3
... or more output parameters, where those output parameters may include a prediction of factors such as operating stress, strain, deflection, deformation, wear rate, fatigue strength, creep strength, or service life. In reality, virtually all material properties and design parameters exhibit some...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009014
EISBN: 978-1-62708-187-0
... the sum of all costs, both the direct and indirect, that result from the design, production, distribution, use, and salvage of the casting over its lifetime. Although all components of total cost are important, we are particularly concerned in this paper with how design decisions drive both the direct...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003023
EISBN: 978-1-62708-200-6
... to obtain relative comparisons between different materials or as an accelerated means for lifetime predictions. Where the loss of additives such as plasticizers or antioxidants can damage a structure, decomposition profiles are excellent indicators of change. Thermogravimetric analysis can also be...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005430
EISBN: 978-1-62708-196-2
... multicomponent diffusion simulation is simply not practical or efficient. However, these multicomponent data are critical for correctly predicting diffusion behavior in many industrial (commercial) applications and may be strongly dependent on composition. Thus, multicomponent diffusion mobility databases are...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001292
EISBN: 978-1-62708-170-2
... steady-state dose would be approximately 2 × 10 17 ions/cm 2 . This behavior is quantitatively predicted by analytic models, as shown in Fig. 3(b) , which illustrates the sputter removal of the surface and the surface enrichment of the implanted species resulting from successive (lower-dose...