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particulate debris
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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
... proinflammatory response particulate debris soluble debris stainless steel titanium alloys NEARLY HALF TO A THIRD of elderly people in the United States will eventually require a total joint replacement of one type or another (hip, knee, shoulder, disc, etc.) to maintain mobility and a high quality...
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.
Book: Fatigue and Fracture
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002357
EISBN: 978-1-62708-193-1
... Abstract This article describes the types of closure mechanisms, including plasticity-induced, roughness-induced, oxide-induced, and fretting-debris-induced. It discusses test techniques used to establish a valid threshold value for aluminum alloy crack growth thresholds, steel crack growth...
Abstract
This article describes the types of closure mechanisms, including plasticity-induced, roughness-induced, oxide-induced, and fretting-debris-induced. It discusses test techniques used to establish a valid threshold value for aluminum alloy crack growth thresholds, steel crack growth thresholds, and titanium alloy crack growth thresholds. The near-threshold behavior of nickel-base superalloys is described. The article briefly reviews the threshold results for fiber-reinforced, whisker-reinforced, and particulate-re-inforced metal-matrix alloys. It explains the near-threshold fatigue crack propagation in welded joints and the fundamental considerations for modeling threshold behavior. The article concludes with a discussion on the effects of thresholds in the engineering design process.
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004205
EISBN: 978-1-62708-184-9
... factors that may lead to physical breakdown of the passive film, such as fretting, erosion, or wear. Both particulate debris and metal ions are released into the surrounding tissues as a result of these processes. The tissue response to the products of corrosion may then exacerbate the conditions...
Abstract
In the field of medical device development and testing, the corrosion of metallic parts can lead to significant adverse effects on the biocompatibility of the device. This article describes the mechanisms of metal and alloy biocompatibility. It reviews the response of implant metals and particulate materials to corrosion. The effect of metal ions from an implanted device on the human body is also discussed. The article concludes with information on the possible cancer-causing effects of metallic biomaterials.
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005652
EISBN: 978-1-62708-198-6
... that may lead to physical breakdown of the passive film, such as fretting, erosion, or wear. Both particulate debris and metal ions are released into the surrounding tissues as a result of these processes. The use of modular connections in total joint arthroplasty has the potential to lead to corrosion...
Abstract
This article discusses the mechanisms of metal and alloy biocompatibility. It provides information on early testing and experience with metals in medical device applications. The article describes the response of implant and particulate materials to severe corrosion. It provides a description of metal binding and its effects on metabolic processes. Hypersensitive responses to metal ions are also reviewed. The article concludes with a discussion on the possible cancer-causing effects of metallic biomaterials.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005351
EISBN: 978-1-62708-187-0
... of the melting unit (in-furnace filtration) and in the gating and/or riser system (in-mold filtration). Zinc and copper alloy melts also are filtered but to a much lesser extent than aluminum. In almost all instances of metal casting, the presence of dross, inclusions, or particulate impurities detracts from...
Abstract
In the handling of molten aluminum, it is fairly common to use filters as a part of the melting unit and in the gating and/or riser system. This article describes the methods of in-furnace and in-mold filtration, with an emphasis on the filtration of molten aluminum. It discusses the factors that influence the formation of inclusions. The article describes the three basic methods of mechanically removing or separating inclusions from molten metal. The methods include sedimentation, flotation, and positive filtration. The article provides a discussion on the types of molten-metal filters, including bonded-particle filters, cartridge filters, and ceramic foam filters. It lists the factors that are important in achieving optimum performance of any in-furnace filtering application. The article concludes with information on filtered metal quality and the methods of evaluation.
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003050
EISBN: 978-1-62708-200-6
... oxide, mixtures of nitrous oxide and other nitrogen-oxygen compounds (NO x ), volatile organic compounds (VOCs), and particulates. The Clean Air Act also requires all states to meet minimum emissions standards for NO x , VOCs, and CO. HF Emissions HF emissions are produced after the breakdown...
Abstract
Ceramic and glass manufacturers take environmental regulations into consideration during all stages of the product cycle, from research and development to purchasing, processing, end use, and disposal. Ceramic and glass products are finding application in the construction industry and as raw materials for other processes. This article describes the recycling of in-process scrap and industrial wastes (fly ash, red mud, metallurgical waste, and other waste products), and applications of these recycled products. It focuses on environmental regulations such as Resource Conservation and Recovery Act and Clean Air Act. The Clean Air Act requires all states to meet minimum emissions standards for nitrogen-oxygen compounds, volatile organic compounds, and carbon monoxide.
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006869
EISBN: 978-1-62708-395-9
.... Reinforcements (fibrous or particulate) generally are used to increase load-carrying capacity, strength, resistance to creep, and wear. Limitations of strength and thermal conductivity can be overcome efficiently by selecting the right reinforcements and fillers in the appropriate amount, combination...
Abstract
Reinforced polymers (RPs) are widely used in structural, industrial, automotive, and engineering applications due to their ecofriendly nature and the potential to manipulate their properties. This article addresses the technical synthesis of RPs, referring to their tribological behavior, to provide insights into the contribution and interaction of influential parameters on the wear behavior of polymers. It provides a brief discussion on the effects of significant parameters on RP tribology. The article describes abrasive and adhesive wear and provides a theoretical synthesis of the literature regarding the wear mechanisms of RPs. It also describes the synthesis of abrasive wear failure of different types of RPs and highlights the contribution of these influential parameters. The article addresses the synthesis of adhesive wear failure of different types of RPs.
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
... Abstract This article reviews the abrasive and adhesive wear failure of several types of reinforced polymers, including particulate-reinforced polymers, short-fiber reinforced polymers (SFRP), continuous unidirectional fiber reinforced polymers (FRP), particulate-filled composites, mixed...
Abstract
This article reviews the abrasive and adhesive wear failure of several types of reinforced polymers, including particulate-reinforced polymers, short-fiber reinforced polymers (SFRP), continuous unidirectional fiber reinforced polymers (FRP), particulate-filled composites, mixed composites (SFRP and particulate-filled), unidirectional FRP composites, and fabric reinforced composites. Friction and wear performance of the composites, correlation of performance with various materials properties, and studies on wear-of failure mechanisms by scanning electron microscopy are discussed for each of these types.
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
... (layered) thermal spray coating microstructure that results from particulate deposition. This unique microstructure imparts several advantages and disadvantages. Fig. 1 Schematic of the thermal spray process Fig. 2 Thermal spray coating. Buildup of a thermal spray coating is a chaotic...
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.
Book: Powder Metallurgy
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006132
EISBN: 978-1-62708-175-7
... additional material are also important factors. Another important factor is whether the system is open or closed. This will determine whether the wear debris is flushed out continuously with fresh clean fluid, or retained at the interface causing additional damage. These complications mean that wear testing...
Abstract
The powder metallurgy (PM) process is a relatively efficient and economic process that can be used to produce high quantities of aluminum components with a reasonable degree of precision and finds application in camshaft bearing cap (cam cap) production. The article discusses the production steps involved in cam cap manufacturing: powder production, compaction, sintering, repressing, and heat treatment. In addition, it reviews the R&D work involved in improving the structural properties of emerging aluminum alloy systems.
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
... if this debris is disturbed. Removal should be via methods that minimize airborne dust generation, such as vacuums equipped with high-efficiency particulate air filtration. Fig. 6 Hand-washing facilities must be provided when workers may come into contact with toxic materials. These facilities should...
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.
Book: Fractography
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 June 2024
DOI: 10.31399/asm.hb.v12.a0006881
EISBN: 978-1-62708-387-4
... of the concrete. Deposits on Surfaces Some common deposits on fracture surfaces include calcium carbonate ( Fig. 3a ), particulate debris ( Fig. 3a ), alkali-silica reaction gel ( Fig. 8 ), steel corrosion product ( Fig. 9 ), and ettringite (calcium sulfoaluminate hydrate) ( Fig. 10 ). Calcium carbonate...
Abstract
This article presents a brief description of the fundamental characteristics of concrete and its constituents for understanding concrete fracture surfaces. It discusses the following two types of fractures: fractures induced in the laboratory and existing (service) fractures. The article provides a discussion on how existing crack surfaces differ from induced fractures: color, hardness, luster, depth of carbonation, deposits on crack surfaces, and propagation around or through aggregates.
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
... monocytic cells (usually referred to as a foreign body response); if the material is in the form of a particulate, the response may include multinucleated monocytes (foreign body giant cells) and is referred to as a granuloma ( Ref 3 ). If the device requires the flow of ions or molecules at the interface...
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
... measurable wear metal debris unless abnormal wear occurs. However, oil contaminants such as particulates, water, and/or fuel will weaken the lubricant film, resulting in metal-on-metal contact from which fatigue wear can propagate, or abrasive or adhesive wear processes might be accelerated. As long...
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.
Book: Thermal Spray Technology
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005743
EISBN: 978-1-62708-171-9
... These intermediate storage bins receive the wet pulp from the digester. The abrasive wet mixture, often containing sand and other particulate debris, is blown into the vessel at high rates, which results in short bin life unless the walls are suitably protected. One method of protection has been to attach ceramic...
Abstract
Thermal spray coatings, along with certain proprietary sealants, are widely used in the paper manufacturing industry for corrosion and wear resistance and to impart special surface characteristics. This article discusses the steps involved in the paper manufacturing process. Most modern papermaking machines are based on variations of the Fourdrinier machine. The article describes four operational sections of the machine: forming, press, drying, and calendar. It provides an overview of the machine components where thermal spray coatings are used, namely, digesters, blow tanks, suction roll, center press rolls, yankee dryer rolls, calendar rolls, doctor/scalping blades, and cutting equipment.
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006850
EISBN: 978-1-62708-395-9
..., thermosets, which do not soften due to thermal energy, undergo chemical degradation at the interface. These degraded products detach themselves from the main body of the polymer and form transfer film and debris at the interface. The wear rate can be very high if the prevailing interface temperature is high...
Abstract
This article presents the mechanisms of polymer wear and quantifies wear in terms of wear rate (rate of removal of the material). Interfacial and bulk wear are discussed as well as a discussion on the wear study of "elastomers," "thermosets," "glassy thermoplastics," and "semicrystalline thermoplastics." The article also discusses the effects of environment and lubricant on the wear failures of polymers. It presents a case study on considering nylon as a tribological material and failure examples, explaining wear resistance of polyurethane elastomeric coatings and failure of an acetal gear wheel.
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006497
EISBN: 978-1-62708-207-5
Abstract
Aluminum powders can be formed into components by several competing technologies, including powder metallurgy (PM), metal injection molding, powder forging, and additive manufacturing. This article explores PM methodologies that are being exploited to manufacture such components. It reviews emerging technologies that promise to offer exciting ways to produce aluminum parts. The article discusses the various steps involved in PM, such as powder production, compaction, sintering, repressing, and heat treatment. It provides information on aluminum production statistics and the wear-resistance applications of PM.
Book: Fractography
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 June 2024
DOI: 10.31399/asm.hb.v12.a0006875
EISBN: 978-1-62708-387-4
... to preserve any insoluble particulates. Replica strips can be retained as well. As with the fracture itself, the retained materials should be dried and stored in a sealed bag or container. Air Blast or Brush Cleaning Loosely adhering particles and debris can be removed from the fracture surface...
Abstract
This article discusses the importance of the care and handling of fracture specimens and what to look for during the preliminary field or laboratory observation and collection, the preservation of specimens, and the cleaning and preparation of fracture specimens for additional analyses. The preservation of nonmetallic specimens, medical devices, oversized components, light alloys, nondestructively tested components, and materials that are part of legal proceedings is addressed.
Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003434
EISBN: 978-1-62708-195-5
... area is required with respect to adjoining areas of lesser cleanliness. Compressed gas introduced into the area must be free of oil, condensed moisture, and particulate matter. Doors that open directly outside the building are used only in emergency situations. The airborne particulate count must meet...
Abstract
In-process inspection during composite material lay-up is essential if the structural, dimensional, and environmental performance designed into a part is to be consistently achieved. This article discusses the requirements to be met by the facilities and equipment to produce high-quality composites. It reviews the procedures that are allowed and prohibited in controlled-contamination areas of lay-up. The article emphasizes significant areas, such as material control and lay-up process, in which quality-control personnel can be effective in preventing production problems. It concludes with a discussion on automated tape laying and fiber placement, as well as the numerically aided lay-up process.
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
... any type of contamination on the samples with corroded debris. Collected corroded samples should be placed in appropriate, clean containers, and all of them should be clearly marked and identified according to location, samples, (etc.). Chemical Analysis Chemical analysis is performed...
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.
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