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mechanistic model

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Published: 01 January 1993
Fig. 14 Three-stage mechanistic model of diffusion welding. (a) Initial asperity contact. (b) First-stage deformation and interfacial boundary formation. (c) Second-stage grain boundary migration and pore elimination. (d) Third-stage volume diffusion and pore elimination. Source: Ref 7 More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003642
EISBN: 978-1-62708-182-5
.... This article discusses the principles and applications of various models developed for understanding the corrosion mechanism. These models include mechanistic models, including Pourbaix model, thermophysical module, electrochemical module, and ion association model; risk-based models; and knowledge models...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005537
EISBN: 978-1-62708-197-9
... for obtaining machining-induced residual stresses, including detailed finite-element analysis of the cutting process, the simple fast-acting mechanistic model, and the semi-empirical linear stress model. The article concludes with information on the modeling benefits and implementation of modeling...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005425
EISBN: 978-1-62708-196-2
..., which can be grouped broadly into three classes: statistical, phenomenological, and mechanistic models. The article also presents an overview of the potential directions for the modeling of metals processing. material behavior model statistical model phenomenological model mechanistic model...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005438
EISBN: 978-1-62708-196-2
... Abstract This article provides guidelines for the assessment of model quality in materials science and engineering. It discusses the fundamentals of model quality assessment and the calibration of mechanistic material models. The article reviews the considerations for the model verification...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002482
EISBN: 978-1-62708-194-8
..., mechanistic, or deterministic models along with their important considerations. It describes the various aspects of modeling of deformation processes, casting operations, and fusion welding processes, with examples. casting deformation deterministic models empirical models fusion welding...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003382
EISBN: 978-1-62708-195-5
... is a critical issue in fatigue and generally results from high interlaminar normal and shear stresses. The article schematically illustrates the structural elements in which high interlaminar stresses are common. It concludes with a discussion on the classification of fatigue models such as mechanistic...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003632
EISBN: 978-1-62708-182-5
... of the environmentally induced fractures that were previously termed liquid-metal embrittlement are now considered solid metal induced embrittlement. Because satisfactory mechanistic models have not been developed for any of these forms of environmental cracking, the prediction of environmentally assisted cracking...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003633
EISBN: 978-1-62708-182-5
... of SCC. It describes the phenomenological and mechanistic aspects of the initiation and propagation of SCC. The article includes a phenomenological description of crack initiation and propagation that describes well-established experimental evidence and observations of stress corrosion. Discussions...
Book Chapter

Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005816
EISBN: 978-1-62708-165-8
... velocity and subcooling and to decrease with the distnace from the stagnation point. Modeling of Jet Cooling Modeling of jet cooling includes global and mechanistic forms. Global Modeling Most of the work cited in the previous two sections involved the development of an empirical correlation...
Image
Published: 01 December 2009
Fig. 3 Length scales of metallurgical processes result in different tools for process observation and methods for modeling and simulation. Models must be developed and used over these length scales to enable accurate, mechanistic prediction of macroscopic effects. Courtesy of C. Kuehmann More
Image
Published: 01 December 2009
Fig. 3 Architecture of mechanistic martensite start temperature (M s ). fcc, face-centered cubic; bcc, body-centered cubic. Source: Computational model, Ref 6 More
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005544
EISBN: 978-1-62708-197-9
... in its precipitation models to allow realistic and mechanistic modeling on nucleation, growth, and coarsening. QuesTek http://www.questek.com Micromechanical and mesoscale property models (solid mechanics and finite-element analysis) Table 6 Micromechanical and mesoscale property models...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003638
EISBN: 978-1-62708-182-5
... for the corrosionist. Properly designed and planned experiments can reduce the number of experiments and produce data that are subjected to statistical analysis. Statistically significant data can then be used to develop mechanistic- and knowledge-based models that are used, for example, as critical elements in life...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009003
EISBN: 978-1-62708-185-6
... representation of possible fracture mechanisms is the fracture mechanism (Ashby) map ( Fig. 13 ). Such a map shows the area of dominance in terms of normalized stress versus normalized temperature for the dominant fracture mechanisms. The maps are constructed chiefly by using the best mechanistic models of each...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003379
EISBN: 978-1-62708-195-5
..., or one must use a more comprehensive theory that properly represents matrix failures if there is no simple design solution available. It should be noted that these particular empirical failure models are 100% mechanistic, so their capabilities and limitations are easily established. What must be avoided...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002476
EISBN: 978-1-62708-194-8
... to conditions different from the original test conditions. Other models that are rooted in the principles of fracture mechanics are discussed in the next section. Batdorf's Theory—Mechanistic Model The concepts proposed by Batdorf ( Ref 21 ), and later refined by Batdorf and Crose ( Ref 22...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009005
EISBN: 978-1-62708-185-6
... predicted by such comparisons. Source: Ref 35 Mechanistic Modeling of Cavitation. Unlike the well-developed phenomenological approaches for ductile fracture, such as that based on the Cockcroft and Latham criterion ( Ref 36 ), the development of physics-based (mechanistic) models for the prediction...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003640
EISBN: 978-1-62708-182-5
... scientific principles with an appreciation of the mechanisms of degradation of the material being studied. Experimental design is an accepted methodology that can help to make the transition between simple but practical empirical models to the most sophisticated multiparameter mechanistic models...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006994
EISBN: 978-1-62708-439-0
... mechanisms that occur but are sufficiently descriptive in AM optimization frameworks. Surrogate models can be developed to approximate the mechanistic models, or they can be developed to have no physical basis and be used as-is when the physics of the AM process are not fully known. For example, the early...