1-20 of 436 Search Results for

theoretical fracture models

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009004
EISBN: 978-1-62708-185-6
.... bulk forming process mechanical plasticity strain state stress state theoretical fracture criteria theoretical fracture models workability theory WORKABILITY, as described in previous articles, is not merely a property of a material but a characteristic of the material/process system...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001348
EISBN: 978-1-62708-173-3
... formulations could be modeled by the absence or presence of interface elements that prevent interpenetration of the crack surfaces. Additionally, fracture parameters were calculated and compared well with previous analytic solutions. Interface Strength Measurements Based on the theoretical analysis...
Book Chapter

By Niels Bay
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005581
EISBN: 978-1-62708-174-0
... Mechanisms and Theoretical Modeling of Bond Strength Surface preparation before cold welding is of utmost importance. In most welding applications, surface preparation consists of degreasing followed by scratch brushing. Studies of the welded and subsequently fractured bonds in scanning electron...
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: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002349
EISBN: 978-1-62708-193-1
... the cause of cracking or crack growth. This article discusses the macroscopic and microscopic basis of understanding and modeling fracture resistance of metals. It describes the four major types of failure modes in engineering alloys, namely, dimpled rupture, ductile striation formation, cleavage...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005461
EISBN: 978-1-62708-196-2
... Abstract This article discusses physical analysis, including slab method and upper-bound method and slip-line field analysis, for calculating stress states in plastic deformation processes. It presents various validation standards and models for evaluating the criterion of fracture for use...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005528
EISBN: 978-1-62708-197-9
... by ductile fracture of metals and alloys is a complex phenomenon. It depends on macroscopic process parameters as well as on the sheet microstructure and its material properties. Brief Literature Review on Modeling Shearing Processes While research on metal shearing dates back to the early 1900s...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006352
EISBN: 978-1-62708-179-5
...%) KIc plain-strain fracture toughness, stress-intensity factor RAR relative abrasion resistance KId dynamic fracture toughness RE rare earth Kt theoretical stress concentration REE rare earth element DK stress-intensity factor range rpm revolutions per minute l length RSF roundness shape factor L liquid...
Book Chapter

By Jian Cao
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005166
EISBN: 978-1-62708-186-3
... Fracture Initiation in Bending Using Crystal Plasticity Models , Philos. Mag. A: Phys. Conden. Matter, Struct., Defects Mech. Prop. , Vol 81 ( No. 8 ), Aug 2001 , p 1997 – 2020 10.1080/01418610108216649 4. Mnif J. , “90° Bending of Sheets Made out of Aluminum Alloys,” Institute...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002390
EISBN: 978-1-62708-193-1
... Behavior and Theoretical Modeling , Met. Sci. , Vol 15 , 1981 , p 425 – 432 9. Van Leeuwen H.P. , “The Application of Fracture Mechanics to the Growth of Creep Cracks,” AGARD Report No. 705, presented at the 56th Meeting of the Structures and Materials Panel, North Atlantic Treaty...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003399
EISBN: 978-1-62708-195-5
... of the stress-strain plot is matrix-plasticity-dominated. However, toward the end of region BC in Fig. 5 , fiber cracks start occurring, so that there is combination of plasticity and damage. Here, the statistical fiber-fracture model in Ref 16 and 17 can be used to incorporate the effects of fiber...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... deformation finite-element modeling forgeability test fracture indentation test plane-strain compression test ring compression test strain strain rate stress tension test workability workability analysis workability tests WORKABILITY refers to the relative ease with which a metal can...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006583
EISBN: 978-1-62708-290-7
... Feedstock (powder + polymer suspension) methods: Fused-filament fabrication and similar microextrusion technologies, such as bound material deposition and composite extrusion modeling Thermoplastic 3D printing Summary of the state-of-the-art (2019) of additive manufacturing of refractory...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006941
EISBN: 978-1-62708-395-9
... to anticipating their time-dependent response to an applied force. Both a theoretical approach based on spring and dashpot models (i.e., if in series, the Maxwell model, and if in parallel, the Voight model), as well as empirical methods, can be used to describe the time- and temperature-dependent viscoelastic...
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
... remains is the specification of the failure function ψ for each reliability model. Phenomenological Models (NSA and PIA) To predict the time-independent (also referred to as fast-fracture) material response under multiaxial stress states Weibull ( Ref 2 ) proposed calculating a failure function per...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003400
EISBN: 978-1-62708-195-5
... are presented. The stress distribution section demonstrates the effects of inelasticity on crack-tip stress fields. Models for crack initiation are discussed. Crack propagation models are derived. Environmental degradation effects on damage tolerance are addressed. General Framework for Fracture...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001351
EISBN: 978-1-62708-173-3
.... Oberg et al. ( Ref 34 ) used the Miedema model for alloy formation to explain the metallurgical details of explosion bonds. In their analysis, they suggest strong correlations between interfacial bond strength and the formation energies between binary alloy constituents. If the theoretical formation...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002370
EISBN: 978-1-62708-193-1
...) obviously the probability of fracture ( P F ) rises with higher stress levels. There has been some discussion about how to calculate P F . Theoretical studies and some comparative investigations ( Ref 4 ) lead to: (Eq 1) P F = 100 ( 3 r − 1 ) / ( 3 n + 1 ) P...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006085
EISBN: 978-1-62708-175-7
... and a correspondingly low density, for example, 35 to 50% of theoretical. However, these particles can be pressed into a partially consolidated billet shape with densities of 70 to 85% of theoretical. This form is referred to as a green compact, and it has sufficient green strength to endure handling. Where greater...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002474
EISBN: 978-1-62708-194-8
... mechanisms involved and, consequently, on the tribosystem. These relationships can be linear or nonlinear. For example, in the case of adhesive wear, simple theoretical models indicate that wear volume is proportional to load. On the other hand, models used to describe fatigue wear typically indicate...