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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
...Abstract Abstract Several failed dies were analyzed and the results were used to evaluate fatigue damage models that have been developed to predict die life and aid in design and process optimization. The dies used in the investigation were made of H13 steels and fractured during the hot...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003523
EISBN: 978-1-62708-180-1
... where the model can be a physical, mathematical, or logical representation of a physical system or process. accident reconstruction failure analysis modeling FAILURE ANALYSIS is generally defined as the investigation and analysis of parts or structures that have failed or appeared to have...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006807
EISBN: 978-1-62708-329-4
... at elevated temperatures. The article describes the stages of the creep curve, discusses processes involved in the extrapolation of creep data, and summarizes notable creep constitutive models and continuum damage mechanics models. It demonstrates the effects of stress relaxation and redistribution...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0090639
EISBN: 978-1-62708-227-3
... stresses created by the welding process ( Ref 1 ). Finite-element models ( Fig. 1 ) were used to predict residual stresses in the areas of high stress concentration introduced during the manufacturing (welding) process and additional applied stresses introduced by the “sagging” loads inherent...
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
... a way in which to view the TMF process and a methodology for developing engineering models. A fruitful topic for research would be to compute from first principles the decay in the maximum stress (σ max ) as a function of cycle number. In a very approximate way, this can be attempted by assuming...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006817
EISBN: 978-1-62708-329-4
..., it may confidently be called an RCM process; if it does not, it should not. This section uses SAE JA1011 as its model to describe the key characteristics of an RCM process. The RCM process involves asking seven questions, always asked in this order ( Ref 1 ): What are the functions...
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
... and modeling the wear process; obtaining and evaluating wear data; and evaluating and verifying the solution. References References 1. Budinski K. , Incipient Galling of Metals , Proc. Intl. Conf. On Wear of Materials , ASME , 1981 , p 171 – 185 2. Lutynski C. , Simansky G...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001600
EISBN: 978-1-62708-217-4
... examined had cross-sectional thicknesses significantly larger than the web cross-sectional thicknesses of the IT components. Recommendations included changing the web reference dimension of 0.38 in. to include a tolerance range based upon a fracture mechanics model. Also, the shot peening process should...
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
... Abstract Abstract Thermomechanical fatigue (TMF) is the general term given to the material damage accumulation process that occurs with simultaneous changes in temperature and mechanical loading. TMF may couple cyclic inelastic deformation accumulation, temperature-assisted diffusion within...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
.... It discusses the processes involved in testing and modeling of impact wear, and includes two case studies. ceramics impact wear metals polymers wear modeling IMPACT OR PERCUSSIVE WEAR has been defined as “the wear of a solid surface that is due to percussion, which is a repetitive exposure...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... the modeling and prototyping of new designs of parts from designs developed in computer programs. Distributed computing and dedicated computation capability are critical in the AM process, because each AM machine needs to form the part digitally, transferring the three-dimensional (3D) computer model...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
... representation of a physical system or process. The use of modeling can be a very powerful tool for information pertaining to the reconstruction of an accident. Whether the modeling consists of simple mathematical modeling of a physical system or more complex computer modeling of a system or part, the results...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
.... Embry J.D. , Damage Accumulation in Fracture Processes , Modeling the Deformation of Crystalline Solids , Lowe T.C. , Rollett A.D. , Follansbee P.S. , and Daehn G.S. , Ed., TMS , 1991 17. Kausch H.H. , Polymer Fracture , Springer Verlag , 1978 18...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
...Abstract Abstract This article provides an overview of fractography and explains how it is used in failure analysis. It reviews the basic types of fracture processes, namely, ductile, brittle, fatigue, and creep, principally in terms of fracture appearances, such as microstructure. The article...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
... of the input requirements and limitations of the analyses are necessary to obtain meaningful results. Special-application FEA software has been developed to optimize the dynamic impact analysis process. These programs are used to model situations such as vehicle collisions, turbine blade containment...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... and thermal, static and transient, linear and nonlinear, and more. The programs are thorough, detailed, and relatively complex and rely heavily on the analyst to accurately create models, understand the solution process, and interpret the results. Currently there are numerous commercial software packages...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
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
... Functional Fault Analysis Interface Fault Analysis Detailed Fault Analysis Identify Failure Consequences Corrective Action Recommendations Overview of FMEA The FMEA Process Fault Equivalence The Failure Cause Model Automation Conclusions FMEA Example: Analysis of a Domestic...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006803
EISBN: 978-1-62708-329-4
..., models and model parameters have some uncertainty in real-world structures. To this day (2020), structural design codes are deterministically based, with the uncertainties accounted for by using conservatisms such as safety factors, design factors, and so on to cover a realistic range of variation. Given...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
..., both stresses ( x -component and maximum principal ones) increase. Fig. 13 The finite element model with and without the refined meshings around the hole of casting process Fig. 14 Linear material properties of AlSi8Cu3 in finite element model Fig. 15 Dimensions of the bolt...