abrasion


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abrasion

Geography the effect of mechanical erosion of rock, esp a river bed, by rock fragments scratching and scraping it; wearing down
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

abrasion

[ə′brā·zhən]
(engineering)
The removal of surface material from any solid through the frictional action of another solid, a liquid, or a gas or combination thereof.
A surface discontinuity brought about by roughening or scratching.
(geology)
Wearing away of sedimentary rock chiefly by currents of water laden with sand and other rock debris and by glaciers.
(medicine)
A spot denuded of skin, mucous membrane, or superficial epithelium by rubbing or scraping.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

abrasion

A surface discontinuity caused by roughening or scratching.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The lower Los Angeles abrasion loss values indicated that aggregate was tougher and more resistant to abrasion.
"As with any health condition, no matter if it is an abrasion or pink eye, proper hand-washing techniques are absolutely necessary to prevent further infection or spread of disease," says Warner.
This was followed by clinical examination for abrasion on the buccal surface of teeth with a standard dental chair light.
Another issue that arises when interpreting abrasion injury incidence to date is that this type of injury is regularly reported with lacerations (injuries to multiple layers of skin) or as part of skin related injuries; therefore, it is difficult to have confidence in the relative risk of abrasion injuries alone.
In the abrasion test itself, the machine itself was shut down after 25,000 cycles, so who knows just how far it could have gone!”
Los Angeles abrasion test measures degradation of rock aggregate and this test can be used to evaluate the quality and strength of rock aggregate.
In vitro studies clearly demonstrated that abrasion of eroded enamel and dentin increased with increasing REA (relative enamel abrasion) or RDA (relative dentin abrasion) values, respectively, of the dentifrice.
In order to measure the sample's abrasion surface, the DEKTAK 8 VEECO smoothness indicator shown in Figure 8 was used.
Corneal abrasion was diagnosed using clinical history and exam finding consistent with fluorescein uptake of the corneal epithelium.
Abrasion and pilling test machine type MAD-B, with six test points to carry out abrasion and pilling tests on textile samples in accordance with the standard Martindale procedure (ASTM D 4966-98: Standard for Martindale abrasion tests, ASTM D 4970-05: Standard for pilling tests, ISO 12945-2: Standard for Martindale (abrasion and pilling tests).
Although there have been recent improvements in topcoats, consumers continue to demand better abrasion and scratch resistance.
Based upon physical examination, our analysis indicates the damage to the Durata lead is consistent with external abrasion from contact with a calcified, or hardened, heart valve or possibly from lead-to-lead contact.