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single-parameter models

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003558
EISBN: 978-1-62708-180-1
.... Identification and characterization in terms of specific mechanisms generally are not as useful or needed since they can change with materials and other tribosystem parameters. Wear mechanisms generally can be grouped into six generic types: Adhesive mechanisms Single-cycle deformation mechanisms...
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
... ) As for the preceding models, the parameters can be determined by experimentation. Conditions for this situation are assumed to be: Out-of-phase cycle Large-grained materials, materials having grain-boundary carbides to reduce creep rate by inhibiting grain-boundary sliding, or single-crystal materials...
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
... ), Morita and Uchiyama ( Ref 56 ), and Fujisawa et al. ( Ref 36 ). In the numerical simulations, the flow fields were evaluated from three-dimensional single-phase numerical simulations with the aid of a standard k -ε turbulence model, and the droplet parameters, such as the droplet velocity, number...
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
...: Failure models continue to be enhanced for structural life prediction. Engineers realize that significant uncertainties and variations in loads, material properties, geometrical, and other parameters occur in real-world structures. A need exists to quantify the probability of failure of structural...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001788
EISBN: 978-1-62708-241-9
... extrusion of Al-6063 billet material. They were examined to identify critical fatigue failure locations, determine corresponding stresses and strains, and uncover correlations with process parameters, design features, and life cycle data. The fatigue damage models are based on Morrow’s stress and strain...
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
... 1 / 3 ) 1 / β Again, this equation can be put in parametric form for use in engineering situations with the constants determined by regression analysis and parameterized in terms of the important variables. The engineering equation would be: (Eq 12) N = ν C ( m...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... concepts. bending brittle fracture compression failure deformation ductile crack nucleation ductile fracture ductility fractography manufacturing imperfections metals microvoid coalescence notched specimen plastic flow root cause failure analysis single-crystal cleavage models specimen...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
.... Models to predict the effect of porosity or inclusions on ductility are given in the Appendix of this article. Inclusions and second-phase particles are the primary sources of voids, and two parameters of importance in these models are particle spacing and particle size. One of the simpler models...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003567
EISBN: 978-1-62708-180-1
..., Miller J.E. and Schmidt F.E. Jr. , Ed., ASTM , 1987 , p 169 – 184 14. Madsen B.W. , A Study of Parameters Using a New Constant-Wear-Rate Slurry Test , Wear of Materials 1985 , Ludema K.C. , Ed., American Society of Mechanical Engineers , 1985 , p 345 15...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001817
EISBN: 978-1-62708-241-9
... by considering the effects of tensional, shear, torsional, and bending stiffnesses, along with the contact and friction between wires. Stanova et al. [ 9 , 10 ] used geometric parametric equations to model some single and multilayered strands. They used MATLAB, CATIA, and ABAQUS software techniques to construct...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
.... , A Fracture Mechanics Approach to Wear , Wear , Vol 61 , 1980 , p 125 – 132 23. Keer L.M. and Bryant M.D. , A Pitting Model for Rolling-Contact Fatigue , J. Lubr. Technol. (Trans. ASME) , Vol 105 , 1983 , p 198 – 205 10.1115/1.3254565 24. Bryant M.D. , Miller G.R...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... , Wear , Vol 105 , 1985 , p 47 – 61 10.1016/0043-1648(85)90005-5 22. Archard J.F. , Single Contacts and Multiple Encounters , J. Appl. Phys. , Vol 32 , 1961 , p 1420 – 1425 23. Aghababaei R. , Warner D.H. , and Molinari J.-F. , On the Debris-Level Origins...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003528
EISBN: 978-1-62708-180-1
... theoretical methods. Theoretical models, such as those in Ref 23 and 24 , are generally used when a suitable coupon cannot be obtained. The experimental method is usually the preferred method, particularly when the physical parameters of the material structure are not well known. The experimental method...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... the yield strength of the material. Tresca’s theory states that yield at a point begins when the maximum shear stress equals the shear stress in a tension specimen when it begins to yield. Another common failure model is the von Mises criterion, which is based on a determination of distortion energy...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003563
EISBN: 978-1-62708-180-1
... to simplified experimental contact model configurations (RCF tribometers), which have been extensively used to investigate the influence of changes in bearing materials, residual stress, and tribological conditions. Although the correlation between the fatigue life of these model contact configurations...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003503
EISBN: 978-1-62708-180-1
... is undetectable or latent or the item is redundant, the analysis may be extended to determine the effects of another failure, which in combination with the first failure could result in an undesirable condition. All single-point failures identified during the analysis that have undesirable consequences must...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
.... The small differences are indicated. A flying aircraft experiences both lift and drag. These loads on the aircraft are dependent on the design of the external parameters of the aircraft. These parameters include geometry, weight, shape of the wing, geometry of the fuselage, whether it is pressurized...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
.... The article discusses metallurgical instabilities of steel-based alloys and nickel-base superalloys. It provides information on several life assessment methods, namely, the life fraction rule, parameter-based assessments, the thermal-mechanical fatigue, coating evaluations, hardness testing, microstructural...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
..., measurement, or finite-element modeling. X-ray diffraction can be used to measure the residual stress in as-manufactured components so as to enable the detection of stress states that may be potentially harmful to service life and to enable the subsequent identification of unfavorable process parameters...
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
... processing and controls and have redefined the criteria for failure. Furthermore, the pursuit of understanding how and why these failures occurred have resulted in the development of structural-integrity programs, enhanced analytical modeling and prediction techniques, accurate life assessment methods...