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heat transfer models

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... by the shear and adhesive properties of the transferred film. Reprinted with permission from Ref 1 A distinction within the interfacial wear process may be made based on whether or not the frictional heat dissipation is isothermal or quasi-adiabatic. Isothermal heat dissipation can change...
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
... temperatures Explains the appearance of the first scuffing marks in localized zones along the meshing line Complex numerical model Large number of calculations Very sensitive to load-share function (not applicable for high-load, low-speed conditions) Global scuffing criteria...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001137
EISBN: 978-1-62708-228-0
... failed in service some years previously. The failed pressure vessel, with a diam of 2.5 m and several meters tall, had been made of 12 mm thick IZETT steel plate of the same type and heat treatment as used in the earlier fitness-for-purpose already measured. Examination of the fracture surfaces suggested...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001777
EISBN: 978-1-62708-241-9
... fracture by cleavage. The crack followed the heat-affected zone of a welded joint connecting a rectangular hollow section member and a plate flange. The main factors contributing to failure were related with a combination of design-in and manufacturing-in factors like high load-strength ratio at the point...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
... of the polymer, the friction coefficient (μ) and the extent of frictional heating reduce, leading to less damage to the polymer, filler, and their adhesion. This generally results in less wear. The nature of transferred film on the counterface plays a key role in controlling wear performance of a composite...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
...., Huntsville, AL. http://rhedco.com/ . Accessed June 2009 8. Manson S.S. : Behavior of materials under conditions of thermal stress . Heat Transfer Symposium , University of Michigan Engineering Research Institute , pp. 9 – 75 ( 1953 ) 9. White F.M. : Heat and Mass Transfer...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001308
EISBN: 978-1-62708-215-0
... the weight of the carriage, test section floor, and other elements, as well as from loads transferred from the model during testing. These stresses are typically small. However, large, residual, tangential stresses are believed to exist in this particular rail from fit-up distortion, flame-hardening...
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
... general-purpose FEA. General-purpose FEA software programs also are commonly used for thermal analysis to determine heat transfer and temperature profiles. Because the focus of this article is on FEA and structural failure analysis, discussion is limited only to those thermal areas that affect...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... Fig. 28 Valve recession vs. valve closing velocity for a series of bench tests carried out isolating impact using a cast tool steel based seat insert material Fig. 29 Model predictions for valve recession caused by impact wear. Line represents model prediction; data points indicate bench...
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: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... be analyzed on a desktop computer. Fig. 4 Example of a three-dimensional half-symmetry finite-element model of a housing General-purpose FEA software programs also are commonly used for thermal analysis to determine heat-transfer and temperature profiles. Because the focus of this article...
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
.... on High Temperature Corrosion in Energy Systems ( Detroit ), American Institute of Mining, Metallurgical, and Petroleum Engineers , Sept 1984 12. Foley T. and Levy A.V. , The Erosion of Heat Treated Steels , Wear , Vol 48 ( No. 1 ), 1983 , p 181 13. Madsen B.W...
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
... engineering groups involved with the product design. Such groups are often discipline specific and focus on their own areas of responsibility while ignoring other aspects of the design. For example, electrical engineers rarely address the design problems associated with vibration or heat transfer...
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
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006796
EISBN: 978-1-62708-295-2
... (fatigue porosity, cracks, or erosion craters). The physics of the initiation of LDI erosion and the incubation period are still future topics of interest. They are closely related to the aerodynamics and heat transfer of turbine blades as well, where a minor crack on the blade surface will trigger...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
... increasing the rate of damage. Erosion by fly ash causes polishing, flat spots, wall thinning, and eventual tube rupture. Fly ash erosion can be controlled by coating tube surfaces with refractory cements and other hard, erosion-resistant materials, although this reduces the heat-transfer capability...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... power plant classifications Nomenclature Steam conditions Net plant efficiency (higher heating value), % Subcritical 16.5 MPa (2400 psig), 540–565 °C (1000–1050 °F) 35 Supercritical >24.8 MPa (3600 psig), ~565–600 °C (1050–1110 °F) 38 Ultrasupercritical >24.8 MPa (3600...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006789
EISBN: 978-1-62708-295-2
... abrasion is said to exist when loose particles are trapped between rubbing solids. They become momentarily fixed in the rubbing process to produce scratching but may also roll in the interface to produce material removal by adhesive transfer to the loose particle. Adhesive transfer or adhesive wear almost...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
... the rate of damage. Erosion by fly ash causes polishing, flat spots, wall thinning, and eventual tube rupture. Fly-ash erosion can be controlled by coating tube surfaces with refractory cements or other hard, wear-resistant materials, although this reduces the heat-transfer capability of the surface...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001790
EISBN: 978-1-62708-241-9
... the removal process, it was necessary to torch cut the bearing closest to the shaft fracture. It is probable that some heat was transferred to the shaft during the cutting process; however, the region of maximum heat transfer was not directly adjacent to the fracture surface. The two as-received sections...