نتایج جستجو برای: brake lining wear particles
تعداد نتایج: 194604 فیلتر نتایج به سال:
Contact of wear particles with body fluids can result in widespread dissemination of extractable constituents from joint implants. The aim of this in vitro study is to clarify whether there is a mutagenic and/or carcinogenic risk from CoCrMo and Ti6Al wear particles. Particles of a representative size were produced by fretting; toxicity and mutagenicity were investigated using the salmonella/mi...
Airborne particles and their adverse effects on air quality have been recognized by humans since ancient times. Current exhaust emission legislations increase the relative contribution of wear particles on the PM levels. Consequently, wearbased particle emissions from rail and road transport have raised concerns as ground transportation is developing quickly. Although scientific research on air...
INTRODUCTION For more than 20 years alumina-blasted surfaces have been successfully used for cementless surgical implants, because of their good biocompatibility and rapid osseointegration. However, it has been shown recently that grit-blasting leads to partial embedding of aluminum oxide particles that can cover 24% to 40% of the surface, with a difference between manufacturers [1-2]. These pa...
In end-stage arthritis patients, total joint replacement is a very effective surgical procedure. Nevertheless, the high revision rate after surgery remains a major concern. The wear particles generated from biomaterial-induced tissue responses may lead to chronic inflammation and local bone destruction (periprosthetic osteolysis). Several important signaling pathways are involved in wear partic...
Brake friction composite materials comprising varying proportions of natural (banana) and inorganic (lapinus) fibers were designed, fabricated by compression molding, characterized for sliding wear performance. The properties the manufactured composites have been studied Taguchi method. An orthogonal array (L 16) was used to investigate influence parameters. A series tests conducted on a pin-on...
Trace element measurements in PM10–2.5, PM2.5–1.0 and PM1.0–0.3 aerosol were performed with 2 h time resolution at kerbside, urban background and rural sites during the ClearfLo winter 2012 campaign in London. The environment-dependent variability of emissions was characterized using the Multilinear Engine implementation of the positive matrix factorization model, conducted on data sets compris...
AIM OF THE STUDY In recent years cross-linked polyethylenes have been developed in an attempt to reduce the wear, as has been demonstrated in knee simulators. The aim is to assess, by counting particles of polyethylene in synovial fluid, whether the reduction in wear is confirmed in patients with a highly crosslinked polyethylene prosthesis. MATERIAL AND METHODS A prospective randomised study...
The current work has been undertaken to see the effect of Gr/Sn as a solid lubricant for development hybrid aluminum metal matrix composite (HAMCs). HAMCs were fabricated by reinforcing 10 wt% (sillimanite + ilmenite) minerals with or without 1 Sn/Gr/both via stir casting technique. Optical microscopy revealed homogenous distribution reinforced particles refinement silicon. Vicker hardness show...
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