Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
Standard Practice for Gravimetric Measurement of Polymeric Components for Wear Assessment
Automaticky preložený názov:
Štandardné praktiky pre Gravimetrická meranie polymérnych zložiek pre nosenie hodnotenie
NORMA vydaná dňa 15.8.2012
Označenie normy: ASTM F2025-06(2012)
Poznámka: NEPLATNÁ
Dátum vydania normy: 15.8.2012
Kód tovaru: NS-52490
Počet strán: 7
Približná hmotnosť: 21 g (0.05 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
gravimetric method, hip wear, knee wear, weight-loss method, ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)
Significance and Use | ||||||||||
3.1 This practice uses a weight-loss method of wear determination for the polymeric components or materials used in human joint prostheses, using serum or demonstrated equivalent fluid for lubrication, and running under a load profile representative of the appropriate human joint application 3.2 While wear results in a change in the physical dimensions of the specimen, it is distinct from dimensional changes due to creep or plastic deformation, in that wear results in the removal of material in the form of polymeric debris particles, causing a loss in weight of the specimen. 3.3 This practice for measuring wear of the polymeric component is suitable for various simulator devices. These techniques can be used with metal, ceramic, carbon, polymeric, and composite counter faces bearing against a polymeric material (for example, polyethylene, polyacetal, and so forth). Thus, this weight-loss method has universal application for wear studies of human joint replacements which feature polymeric bearings. This weight-loss method has not been validated for non-polymeric material bearing systems, such as metal-metal, carbon-carbon, or ceramic-ceramic. Progressive wear of such rigid bearing combinations has generally been monitored using linear, variable-displacement transducers, or by other profilometric techniques. |
||||||||||
1. Scope | ||||||||||
1.1 This practice describes a
laboratory method using a weight-loss (that is, mass-loss; see
Standard Guide for Gravimetric Wear
Assessment of Prosthetic Hip Designs in Simulator Devices Standard Test Methods for Density and
Specific Gravity (Relative Density) of Plastics by Displacement Standard Test Method for Density of
Plastics by the Density-Gradient Technique Standard Test Method for Wear Testing of
Polymeric Materials Used in Total Joint Prostheses ISO 14243–2 Implants for Surgery--Wear of Total
Knee-Joint Prostheses--Part 2: Methods of Measurement |
Historická
1.9.2010
Historická
1.3.2012
Historická
1.5.2010
Historická
1.7.2011
Historická
1.7.2011
Historická
1.9.2010
Chcete mať istotu, že používate len platné technické normy?
Ponúkame Vám riešenie, ktoré Vám zaistí mesačný prehľad o aktuálnosti noriem, ktoré používate.
Chcete vedieť viac informácií ? Pozrite sa na túto stránku.
Posledná aktualizácia: 2024-11-22 (Počet položiek: 2 206 568)
© Copyright 2024 NORMSERVIS s.r.o.