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debris-induced systemic effects
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Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005666
EISBN: 978-1-62708-198-6
... addresses the biologic aspects of implant debris, both locally and systemically. It describes debris-induced local effects, particle-induced proinflammatory responses, and debris-induced systemic effects. The article concludes with a discussion on the four systemic effects of implant debris, namely...
Abstract
Implant debris is known to cause local inflammation, local osteolysis, and, in some cases, local and systemic hypersensitivity. The debris can be stainless steel, cobalt alloy, and titanium alloy, and soluble debris obtained due to wear from all orthopedic implants. This article addresses the biologic aspects of implant debris, both locally and systemically. It describes debris-induced local effects, particle-induced proinflammatory responses, and debris-induced systemic effects. The article concludes with a discussion on the four systemic effects of implant debris, namely, neuropathic effects, hypersensitivity effects, carcinogenicity, and general toxicity.
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
..., which increases the load on the remaining wires. Furthermore, fretting wear may induce fretting notch effect, lead to removal of the lubricant from the fretted interface, and allow access of the corrosive ambient, which further promotes such fatigue crack damages. The accumulation of debris also leads...
Abstract
Fretting is a wear phenomenon that occurs between two mating surfaces; initially, it is adhesive in nature, and vibration or small-amplitude oscillation is an essential causative factor. Fretting generates wear debris, which oxidizes, leading to a corrosion-like morphology. This article focuses on fretting wear related to debris formation and ejection. It reviews the general characteristics of fretting wear, with an emphasis on steel. The review covers fretting wear in mechanical components, various parameters that affect fretting; quantification of wear induced by fretting; and the experimental results, map approach, measurement, mechanism, and prevention of fretting wear. This review is followed by several examples of failures related to fretting wear.
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006414
EISBN: 978-1-62708-192-4
... of a contact. Although oxide debris is usually harder than the metal from which it is generated, oxide abrasion is not generally a major contributor to wear. In contrast, debris generally has a strong protective effect by limiting metal-to-metal contact and possibly taking up some of the movement between...
Abstract
Fretting is the small-amplitude oscillatory movement that can occur between contacting surfaces, which are nominally at rest. This article discusses fretting wear in mechanical components and the mechanisms of fretting wear. It describes the role of fretting conditions, such as fretting duration, slip amplitude, normal load, fretting frequency, contact geometry, type of vibration, and surface finish, as well as the role of environmental conditions. The article reviews the influence of an aqueous environment on the mechanism of fretting. The steps that can be taken to reduce or eliminate damage due to fretting are extremely diverse. The article presents some general indications of how to address the fretting wear problem.
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006380
EISBN: 978-1-62708-192-4
... sliding are helpful to understand what can occur due to dry sliding. In this work, transitions in wear rate—either as the system ages (natural transitions) or due to changes in the imposed conditions (induced transitions)—can play an important role in wear life and functionality. Despite that, much...
Abstract
This article provides a broad overview of sliding and adhesive wear, its processes, and its control, with special attention to three general classes of materials: metals, ceramics, and polymers. It discusses the ways in which materials can be damaged and removed during sliding contact. The article explains the physical and chemical nature of sliding surfaces. It presents wear equations, design criteria, and criteria for selection of materials. The article also describes the factors that affect wear performance of hybrid sliding systems. It concludes by providing general guidelines to prevent the sliding and adhesive wear in metals, polymers, and ceramics.
Book Chapter
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... in the second case ( Ref 2 ). The movement was controlled by a long lever system. Because the resultant debris on steel specimens was the red iron oxide α-Fe 2 O 3 , which had risen from a chemical reaction with oxygen in the air, Tomlinson ( Ref 2 ) coined the phrase fretting corrosion . The investigation...
Abstract
This article reviews the general characteristics of fretting wear in mechanical components with an emphasis on steel. It focuses on the effects of physical variables and the environment on fretting wear. The variables include the amplitude of slip, normal load, frequency of vibration, type of contact and vibration, impact fretting, surface finish, and residual stresses. The form, composition, and role of the debris are briefly discussed. The article also describes the measurement, mechanism, and prevention of fretting wear. It concludes with several examples of failures related to fretting wear.
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005659
EISBN: 978-1-62708-198-6
... quantitative analysis of the material demonstrates the presence of a known toxic molecule, it is necessary to show that the amount which may be released into the patient, that is, dose, is below the toxicity threshold for the duration of the device. This includes both local and systemic ( Ref 2 ) effects...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004103
EISBN: 978-1-62708-184-9
.... Between pH 4.5 and 7, both dichloramine and monochloramine exist. They are very volatile; therefore, distillation will not remove them. Three chloride-induced corrosion mechanisms affect stainless steel in the pharmaceutical systems: pitting corrosion, crevice corrosion, and chloride stress-corrosion...
Abstract
Materials of construction for equipment and piping in pharmaceutical processing plants must be resistant to corrosion from the high-purity water, the buffer solutions used in preparation of the products, and the cleaning solutions used to maintain the purity of the product. The primary water used in pharmaceutical production is water for injection (WFI). This article presents the steps for preparing WFI and discusses the effect of chlorides on stainless steel. It provides information on the passive layer of stainless steels and chromium-containing nickel alloys. The article provides information on the surface finish of pharmaceutical equipment. It discusses the classification of rouge and the characteristics of cast type 316L stainless steel. The article also explains how and when to perform cleaning and repassivation process on classes of rouge.
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
... in. This can be an important aspect to consider, for example, in situations where some wear in a contact is acceptable, but wear debris leaving the contact and contaminating the rest of the system or the product it produces is unacceptable. Component Failure Case Study: Automotive Engine Inlet Valve and Seat...
Abstract
Impact or percussive wear is defined as the wear of a solid surface that is due to percussion, which is a repetitive exposure to dynamic contact by another body. Impact wear, however, has many analogies to the field of erosive wear. The main difference is that, in impact wear situations, the bodies tend to be large and contact in a well-defined location in a controlled way, unlike erosion where the eroding particles are small and interact randomly with the target surface. This article describes some generic features and modes of impact wear of metals, ceramics, and polymers. It discusses the processes involved in testing and modeling of impact wear, and includes two case studies.
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006383
EISBN: 978-1-62708-192-4
... to automatically initiate protective actions. Thus, it is not necessary to draw fluid samples from the machine, send them to the lab, and use trained operators to evaluate them. The principle of operation is usually based on real-time cyclic separation of wear debris from a fluid system onto a surface-effect...
Abstract
This article focuses on different aspects of wear particle analysis. It discusses the different wear regimes in the wear rate versus time (bathtub) curve. The article explains the essence of condition monitoring and how to properly sample lubricants for condition monitoring. It also discusses in-service lubricant analysis for condition monitoring, focusing on the spectrometric oil analysis program. The article describes the characteristics of wear particles and analytical techniques for characterizing them. It also describes the characteristics of different types of wear particles and the mechanisms by which they are generated. The article concludes with a summary of the major applications of wear particle analysis.
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006030
EISBN: 978-1-62708-172-6
... to formaldehyde can irritate the skin, eyes, and respiratory tract. While formaldehyde can have narcotic effects on the central nervous system, concentrations necessary to induce narcosis are so high that severe irritation provides a warning of exposure. Contact with formaldehyde can sensitize the skin. Once...
Abstract
This article discusses the occupational health hazards related to industrial protective coating application and removal. It explains the health hazards associated with coating constituents such as lead, cadmium, chromium, arsenic, silica, and asbestos. The article also discusses hazard evaluation, hazard controls, Occupational Safety and Health Administration standards, and industry consensus standards. It concludes with a description of containment systems to prevent environmental exposures from industrial paint removal projects.
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
... 30. Nowotny H. , Rice S.L. , and Wayne S.F. , Characteristics of Wear Debris in Impact Sliding , Wear , Vol 68 , 1981 , p 159 – 167 31. Zanoria E.S. and Blau P.J. , Effect of Incidence Angle on the Impact-Wear Behaviour of Silicon Nitride , J. Am. Ceram...
Abstract
This article discusses the generic features of impact wear on metals, ceramics, and polymers. It describes normal impact wear and compound impact wear, as well as the features of impact wear testing apparatus such as ballistic impact wear apparatus and pivotal hammer impact wear 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 the impact of wear failure on automotive engine inlet valves and seat inserts.
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001465
EISBN: 978-1-62708-173-3
...-based assets has proven to be more effective than to return them to earth. On-orbit welding is a logical technology to assist in the repair of systems such as a space station. In other cases, such as a manned mission to Mars or the vicinity of the moon, it is impractical or impossible to return damaged...
Abstract
Welding as an assembly process has become increasingly more attractive to designers of space structures because of its sufficient strength, endurance, reliability during their service lives, and ease of repair. This article reviews a variety of applications for welding in space and low-gravity environments and describes the unique aspects of the space environment. It compares the applicable welding processes, namely, electron-beam welding, laser-beam welding, and gas-tungsten arc welding and examines the metallurgy of low-gravity welds. Steps taken to ensure the continued development of welding technology in space are also discussed.
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
..., electrical current, metal coupling, aggressive agents Check bulk composition and contaminants For gouging and abrasive wear: check source of abrasives Evaluate effectiveness of lubricant Seals and filters could have failed Fretting induced by slight looseness in clamped joints subject...
Abstract
Analysis of the failure of a metal structure or part usually requires identification of the type of failure. Failure can occur by one or more of several mechanisms, including surface damage (such as corrosion or wear), elastic or plastic distortion, and fracture. This leads to a wide range of failures, including fatigue failure, distortion failure, wear failure, corrosion failure, stress-corrosion cracking, liquid-metal embrittlement, hydrogen-damage failure, corrosion-fatigue failure, and elevated-temperature failure. This article describes the classification of fractures on a macroscopic scale as ductile fractures, brittle fractures, fatigue fractures, and fractures resulting from the combined effects of stress and environment.
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
... under thermal excursions without binding (this is also true for any tube heat-exchanger system). Tube impact fretting caused by flow-induced tube vibrations can reduce wall thickness, requiring eventual replacement. Extensive experimentation has revealed that the interaction of tube support clearance...
Abstract
Mechanically assisted degradation of metals is defined as any type of degradation that involves a corrosion mechanism and a wear or fatigue mechanism. This article provides a discussion on the mechanisms of five forms of degradation: erosion, fretting corrosion, fretting fatigue, cavitation and water drop impingement, and corrosion fatigue. It describes the factors affecting the severity of fretting corrosion. The article also illustrates the relationship between corrosion fatigue and stress-corrosion cracking.
Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003466
EISBN: 978-1-62708-195-5
... damage and an interlaminar fracture due to mode I tension loading for this particular material system. In addition to the visual differences noted above, the microscopic features in the impact damaged region ( Fig. 10 ) include hackles, matrix debris, and significant fiber fibrillation and damage...
Abstract
This article illustrates typical fractographic features for a number of different composite materials. It describes the differences in fracture characteristics due to different loading, material processing, and environmental conditions. The article presents fractographic data obtained from epoxy matrix materials. Minimal fractographic data from other brittle thermoset resin systems are also presented. The article discusses the interlaminar fracture of composites with ductile thermoplastic matrices. It also provides information on the translaminar fracture features of the composite materials.
Book: Fatigue and Fracture
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002372
EISBN: 978-1-62708-193-1
.... Effective lubrication will reduce friction stresses and wear particle accumulation. Fretting Modes and Contact Conditions The oscillatory motion responsible for fretting can be induced by system vibrations or by cyclic loading of one of the components. The relative displacement can be either...
Abstract
Fretting is a special wear process that occurs at the contact area between two materials under load and subject to slight relative movement by vibration or some other force. This article focuses on measures to avoid or minimize crack initiation and fretting fatigue. It lists the factors that are known to influence the severity of fretting and discusses the variables that contribute to shear stresses. These variables include normal load, relative displacement (slip amplitude), and coefficient of friction. The article describes the general geometries and loading conditions for fretting fatigue. It presents the types of fretting fatigue tests and the effect of variables on fretting fatigue from different research test programs. The article also lists the general principles and practical methods for the abatement or elimination of fretting fatigue.
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003316
EISBN: 978-1-62708-176-4
... through their influence on the primary variables. Effective lubrication will reduce friction stresses and wear-particle accumulation. Fretting Modes and Contact Conditions The oscillatory motion responsible for fretting can be induced by system vibrations or by cyclic loading of one...
Abstract
Fretting is a special wear process that occurs at the contact area between two materials under load and subject to slight relative movement by vibration or some other force. During fretting fatigue, cracks can initiate at very low stresses, well below the fatigue limit of nonfretted specimens. This article describes the mechanisms of fretting and fretting fatigue; stress analysis, modeling, and prediction of fretting fatigue; fretting fatigue testing; and fretting prevention methods. Three general geometries and loading conditions for fretting fatigue, along with their remedies, are reviewed.
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... size and location, is often difficult to detect. These factors combine to make localized corrosion mechanisms insidious. If undetected, they can lead to catastrophic system failures. Certain environments induce specific corrosion failure modes. Hydrogen damage, liquid- and solid-metal-induced...
Abstract
Corrosion is the deterioration of a material by a reaction of that material with its environment. The realization that corrosion control can be profitable has been acknowledged repeatedly by industry, typically following costly business interruptions. This article describes the electrochemical nature of corrosion and provides the typical analysis of environmental- and corrosion-related failures. It presents common methods of testing of laboratory corrosion and discusses the processes involved in the prevention of environmental- and corrosion-related failures of metals and nonmetals.
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
... due to the dissipation of frictional energy at the contacting asperities can induce the direct oxidation of the asperities, if the tribological system is operated in an oxygen-containing environment. As a consequence, a surface oxide scale may form, and it can leave the tribological system after...
Abstract
This article considers the main characteristics of wear mechanisms and how they can be identified. Some identification examples are reported, with the warning that this task can be difficult because of the presence of disturbing factors such as contaminants or possible additional damage of the worn products after the tribological process. Then, the article describes some examples of wear processes, considering possible transitions and/or interactions of the mechanism of fretting wear, rolling-sliding wear, abrasive wear, and solid-particle erosion wear. The role of tribological parameters on the material response is presented using the wear map concept, which is very useful and informative in several respects. The article concludes with guidelines for the selection of suitable surface treatments to avoid wear failures.
Book Chapter
Book: Thermal Spray Technology
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005725
EISBN: 978-1-62708-171-9
... varies between processes more as a function of gas stream velocity. Fig. 13 The spray pattern, illustrating particle deposition and the effect of size and debris on thickness and porosity in cross section Coating Buildup As the spray stream is manipulated over the part, overlapping...
Abstract
This article begins with a description of the advantages and disadvantages of thermal spraying. It provides a discussion on the importance of substrate processing prior to coating and the role of undercutting in repair. The article reviews the steps for substrate preparation, namely, cleaning, roughening, masking, and preheating. Information on the equipment and process variables of dry abrasive grit blasting are also provided. The article describes the roles of spray stream and the spray pattern for all thermal spray processes. It discusses the defects arising from poor temperature control and from the variables influencing the manipulation of the spray torch. The article concludes with helpful information on calculating the process efficiency of thermal spraying.
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