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impact wear modeling

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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
... apparatus. Most mechanical components continue to be functional beyond the zero wear limit, and their usefulness is normally connected with the loss of a specific depth of material. The article reviews the zero impact wear model and some measurable impact wear models. It presents a case study illustrating...
Image
Published: 01 January 2002
Fig. 29 Model predictions for valve recession caused by impact wear. Line represents model prediction; data points indicate bench test results. More
Image
Published: 15 January 2021
Fig. 39 Model predictions for valve recession caused by impact wear. Lines represent model predictions; data points represent bench test results. More
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: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002474
EISBN: 978-1-62708-194-8
... V = KLS Zero wear model (conditions for zero wear) τ max ≤ 0.54τ y 2000(γ R τ y ) 9 = ( S / W ) (τ max ) 9 Measurable wear model (a)  Variable energy mode d [ Q / (τ max W ) 4.5 ] = Cd ( S / W )  Constant energy mode dQ = Cd ( S / W ) Impact Percussive impact...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006433
EISBN: 978-1-62708-192-4
.... As the particle impingement angles are predicted to be below 10°, for critical components such as straights and bends (see Ref 13 ), the contribution to the overall wear rate from deformation mechanisms can be ignored so the volumetric erosion per impact can be given by the Hashish model only: (Eq 7) V u...
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
... similar to chip formation in machining, in that pieces of material are removed by the impact of a sharp-edged particle. This component dominates the wear rate at low impact angles. A model for the cutting component was introduced by Finnie ( Ref 50 , 51 , 52 ) and was developed by Bitter ( Ref 45...
Book Chapter

Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006359
EISBN: 978-1-62708-192-4
..., and Ko ( Ref 6 ) investigated the chattering of heat-exchange tubes against annular supports. Wellinger and Breckel ( Ref 7 ) studied the wear of the plastically deforming contacts of a great variety of metal specimens subjected to repeated normal impact. Montgomery ( Ref 8 ) correlated and modeled wear...
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
... of the groove being totally removed as wear debris ( Ref 78 , 79 ). However, the model does correctly account for the shape of the erosion curve as a function of impact angle. Fig. 3 Experimental and predicted curves of erosion of aluminum by 120-mesh silicon carbide (SiC) particles at a velocity of 152...
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
...) p imp: droplet impact pressure Ahmad (2018) ( Ref 42 ) The main differences in these models come from droplet velocity dependency (power index), material resistance, and the effect of the liquid film. The power index of the velocity dependency varies widely from 2 to 8, and the average...
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
... to reduce the clearance. This method is an example of a simple phenomenological model. A more elaborate model would be describing the wear situation as unlubricated mild sliding, impact, or rolling wear, and using analytical models for these wear situations to develop relationships between wear and design...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003631
EISBN: 978-1-62708-182-5
..., are detailed in Failure Analysis and Prevention, Volume 11 of ASM Handbook. Erosion Erosion can be defined as the removal of surface material by the action of numerous individual impacts of solid or liquid particles. Erosive wear should not be confused with abrasive or sliding wear, because...
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
... Abstract This article focuses on the corrosion-wear synergism in aqueous slurry and grinding environments. It describes the effects of environmental factors on corrosive wear and provides information on the impact and three-body abrasive-corrosive wear. The article also discusses the various...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006428
EISBN: 978-1-62708-192-4
... debris generated is allowed to exit the contact zone. The available mechanical energy would then drive components to also impact against each other. Such a model of damage is severe and wear damage can be in millimeters rather than 10s of microns. Mitigating Fretting Wear Mitigation of fretting...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006384
EISBN: 978-1-62708-192-4
... shown that the microjet velocity ( V j ) scales with p ∞ − p v / ρ , which is the order of magnitude of the bubble wall velocity given by the previous spherical model ( Eq 3 ). The pressure on the wall (Δ p ) due to the impact of the microjet can be estimated from...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003630
EISBN: 978-1-62708-182-5
... reactors, and brake rotors and drums. A better understanding of how wear and corrosion interact in gaseous environments is necessary because together they can do more damage than either would do alone. The ability to decrease their synergistic impact can reduce significantly maintenance and replacement...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003302
EISBN: 978-1-62708-176-4
... (>10 3 /s). Such studies have considerable relevance in the analysis of structures subjected to impact, high-velocity sliding wear, crash, and so on. For example, in the field of wear of materials, Meng and Ludema ( Ref 12 ) pointed out that 28 generic erosion models have been used to predict the wear...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006415
EISBN: 978-1-62708-192-4
... model was developed based on their work ( Ref 14 ). Corrosive Wear Corrosive wear is a process in which material loss is caused by mechanical wear, chemical, and electrochemical corrosion. Material failure caused by corrosive wear exists widely in the petrochemical, coal-mining, and oil...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002120
EISBN: 978-1-62708-188-7
... and its consequences. The article details the modeling of tool wear by using the Taylor's tool life equation. The article concludes with information on the requirements of a successful tool life testing program: the test plan objective, designing the test, conducting the test, analyzing the results...
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
... rolling and sliding contact ( Ref 18 ). The bulk of that research was focused on the experimental aspects of wear. Only a few attempts have been made to develop analytical models for predicting the wear process. The importance of determining analytical models for wear mechanisms has been discussed ( Ref...