Antibioitc Disk Testing v1 (protocols.io.ugfettn)

protocols.io ◽  
2018 ◽  
Author(s):  
Aubrey Reed ◽  
Nicole Sunshine ◽  
Renae Lyons
Keyword(s):  
Disk Testing

Wavelength dependence of the polarization of radiation from an accretion disk: Testing accretion disk models

2014 ◽  
Vol 40 (4) ◽  
pp. 185-192 ◽  
Author(s):  
S. D. Buliga ◽  
Yu. N. Gnedin ◽  
T. M. Natsvlishvili ◽  
M. Yu. Piotrovich ◽  
N. A. Silant’ev
Keyword(s):  
Accretion Disk ◽  
Wavelength Dependence ◽  
Polarization Of Radiation ◽  
Disk Testing

Europium as a Candidate Staining Material to Determine Polyethylene Wear

2006 ◽  
Author(s):  
Markus A. Wimmer ◽  
Valentina Ngai ◽  
Joachim Kunze
Keyword(s):  
Molecular Weight ◽  
Earth Element ◽  
Polyethylene Wear ◽  
Measurement Techniques ◽  
Fluid Absorption ◽  
Icp Ms ◽  
Pin On Disk ◽  
Ultra High Molecular Weight ◽  
Topographic Measurement ◽  
Disk Testing

Current protocols employed to measure wear of ultra-high molecular weight polyethylene (UHMWPE) utilize gravimetric and/or topographic measurement techniques. However, these methods may be subject to error due to creeping and fluid absorption capabilities of polyethylene. A novel process designed to avoid these errors was developed using Europium (Eu) as a tracer material to quantify polyethylene wear. Eu is a rare earth element that does not naturally occur in the human body and can be quantified using ICP-MS. By combining a solution of Eu – stearate with nascent UHMWPE powder, 9.5 mm diameter pins were molded and subjected to pin-on-disk testing. Samples of the testing lubricant were obtained at regulated intervals. These samples were analyzed for Eu quantification, which were then compared with the gravimetric pin measurements.

Tribological and percolation properties of polypropylene/nanodiamond soot composites

2019 ◽  
Vol 28 (6) ◽  
pp. 369-377
Author(s):  
Oleg V Lebedev ◽  
Olga I Bogdanova ◽  
Galina P Goncharuk ◽  
Alexander N Ozerin
Keyword(s):  
Friction Coefficient ◽  
Percolation Threshold ◽  
Mechanical Characteristics ◽  
Testing Procedure ◽  
Test Parameters ◽  
Wear And Friction ◽  
Drastic Increase ◽  
The Relationship ◽  
Disk Testing ◽  
Physical And Mechanical Characteristics

The relationship between surface- and bulk-related physical and mechanical characteristics of polypropylene (PP)-based composites filled with nanodiamond soot (NDS) particles was investigated. The tribological properties of a composite were considered as surface properties. Wear and friction coefficient values were measured using a steel pin-on-composite disk testing procedure under the justified set of test parameters. Loading of NDS particles to the PP matrix resulted in a drastic increase in the composite’s wear resistance. A significant increase in friction coefficient and contact temperature was observed for the composites with NDS content below a certain value assumed to be the percolation threshold for the selected processing method and components used. After the percolation threshold is reached, the friction coefficient decreases sharply and returns to the value characteristic of a filler-free PP. The effects observed were attributed to changes in properties of polymer matrix and composite melt.

Tribological Properties of Cold Gas Spraying FeMnCrSi Alloy

2021 ◽  
Author(s):  
Rodolpho F. Vaz ◽  
Sergi Dosta ◽  
Irene G. Cano ◽  
Anderson G.M. Pukasiewicz
Keyword(s):  
High Pressure ◽  
Wear Resistance ◽  
Carbon Steel ◽  
Coefficient Of Friction ◽  
Sliding Wear ◽  
Volume Loss ◽  
Cold Gas Spraying ◽  
Steel Substrates ◽  
Disk Testing ◽  
Cold Gas

Abstract FeMnCrSi and 316L alloy coatings were deposited on carbon steel substrates via high-pressure cold gas spraying and their microstructure, hardness, and wear resistance were obtained. Ball-on-disk testing (ASTM G99) was used to measure sliding wear behaviors. The mechanism of wear was found to be the same for both coatings, although FeMnCrSi had a higher coefficient of friction while 316L had less volume loss.

Study of the Effect of Type (Cu, Ti and Cu, Mo) Electrospark Coatings on Friction in Pin-on-Disk Testing

2008 ◽  
Vol 130 (2) ◽  
Author(s):  
Antoszewski Bogdan ◽  
Evin Emil ◽  
Audy Jaromír
Keyword(s):  
Experimental Study ◽  
Surface Roughness ◽  
Competitive Advantage ◽  
Dry Friction ◽  
Bottom Layer ◽  
Surface Coatings ◽  
Commercial Exploitation ◽  
Steel Material ◽  
Pin On Disk ◽  
Disk Testing

Recent advances in the commercial exploitation of electrospark coatings have focused on improving surface roughness by depositing Ti, Mo, V, or W over an interlayer of Cu, Sn, Pb, or Cd on the top of a tool steel material. This paper presents results of a systematic pin-on-disk experimental study of different type bilayer coatings (Cu–Sn/bronze, bottom layer; Ti and Mo, top layer) deposited on a Type 45 steel. The results are discussed in terms of friction coefficients obtained under different dry-friction conditions (speeds ranging from 0.3m∕sto0.8m∕s, and pressures ranging from 10Nto40N). An additional focus is on scuffling resistance of faces in friction, microhardness and surface roughness of coated items, and the competitive advantage of using advanced surface coatings.

Metal Reinforced Diamond Composite Films

1991 ◽  
Vol 239 ◽  
Author(s):  
C. Tsai ◽  
J. Nelson ◽  
W. Gerberich ◽  
J. Heberlein ◽  
E. Pfender
Keyword(s):  
Diamond Film ◽  
Composite Films ◽  
Diamond Composite ◽  
Step Process ◽  
Metal Binder ◽  
Composite Diamond ◽  
Pin On Disk ◽  
Disk Testing ◽  
And Tungsten

ABSTRACTA three-step process for producing a composite diamond film is presented. Plasma deposited diamonds are reinforced by an electroplated metal binder and the diamonds regrown to produce a continuous, strongly adhered diamond film on molybdenum and tungsten substrates. Microscratching and pin-on-disk testing indicate that the composite films are more adherent than plasma deposited diamonds alone.

Sign in / Sign up

Export Citation Format

Share Document