Impact Characterization of Sub-Size Charpy V-Notch Specimens Prepared from Full-Size Certified Reference Charpy V-Notch Test Pieces

2005 ◽  
Vol 2 (7) ◽  
pp. 12873 ◽  
Author(s):  
E Lucon ◽  
J-L Puzzolante ◽  
G Roebben ◽  
A Lamberty
Keyword(s):  
Full Size ◽  
Test Pieces

Effect of Dispersant Addition on Properties of Ceramic Pieces from Kampung Dengir, Besut, Terengganu, Malaysia

2017 ◽  
Vol 888 ◽  
pp. 28-32
Author(s):  
Noor Asliza Ismail Adnen ◽  
Nur Atiqah Azwa Joulme Morad ◽  
Mohd Aidil Adhha Abdullah ◽  
Mohd Al Amin Muhamad Nor
Keyword(s):  
Water Absorption ◽  
Rheological Behavior ◽  
Ceramic Body ◽  
X Ray ◽  
Test Pieces ◽  
Ceramic Slurry ◽  
Sample Characterization ◽  
Ball Clay ◽  
Good Flow

The abundancy of ball clay can be transform into more useful form. This study was conducted to investigate the effect of different amount of dispersant on ceramic system. Ball clay from Kampung Dengir, Besut, Terengganu was used as starting powder while sodium silicate was used as dispersant to produce good flow ability, minimum viscosity and controllable ceramic slurry. Ceramic slurry was prepared by adding additives such as binder, flux, filler and dispersant, casted onto POP mould to obtain ceramic body. Ceramic then cut into test pieces (8cm x 2cm) and mixed for 2 h and aged for 2 days before dried at 70 °C overnight and sintered at temperature of 800-1200 °C in furnace for 2 h with heating rate 5 °C/min. Slurries also tested for rheological properties using rheometer (brand Thermo Haake). Viscosity and shear stress were measured to investigate the rhoelogical behaviour of slip with different amount of dispersant (0.03 mL to 0.06 mL/200 mL of sample). Characterization of raw samples has been done using X-ray diffractometer (XRD) showing the presence of kaolinite and quartz. Effect of dispersant on rheological behavior, rate of shrinkage, water absorption, porosity and density were investigated It was found that increase in amount of dispersant added exhibit the best rheological behavior, and 0.05 mL dispersant was the optimum amount in term of rate of shrinkage, water absorption, porosity and density. As a conclusion, 0.05 mL was the optimum dispersant which gives best rheological behavior and almost fault-free ceramic bodies

Characterization of a Composite Material Consisting of a Polyester Resin Matrix with Reinforcement of Horsemane in Flat Tissue

2020 ◽  
Vol 995 ◽  
pp. 49-55
Author(s):  
Christian G Bautista ◽  
Patricio I. Mena ◽  
Cristian A. Paredes ◽  
Marco Antonio Paredes
Keyword(s):  
Mechanical Characteristics ◽  
Sheet Steel ◽  
Resin Matrix ◽  
Matrix Resin ◽  
Biodegradable Composites ◽  
Test Pieces ◽  
Polyester Matrix ◽  
The Moment ◽  
Made In

The manufacture of mechanical components by means of biodegradable composites is the best alternative at the moment of reducing cost and weight, maintaining the mechanical characteristics. In this work the mechanical characteristics are shown as the result of combining a polyester matrix resin with a reinforcement of animal fiber such as horsehair. The results obtained correspond to mechanical characterization tests at traction, bending and impact by dart drop according to rules ASTM D3039/D3039M-17, D7264/D7264M-15 and D5628 respectively, made in four groups of test pieces of material combining a polyester matrix resin and reinforcement of horsemane. The development of materials composed of horsehair as reinforcements offers similar mechanical characteristics with traditional materials such as sheet steel or polymers, but with a considerable weight reduction, ideal for automotive applications such as bodywork or interior parts of vehicles.

scholarly journals Characterization of Engineering Plastics Plasticized Using Supercritical CO2

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 134
Author(s):  
Masaki Watanabe ◽  
Yoshihide Hashimoto ◽  
Tsuyoshi Kimura ◽  
Akio Kishida
Keyword(s):  
Molecular Weight ◽  
Supercritical Co2 ◽  
Chemical Properties ◽  
Molding Process ◽  
Test Pieces ◽  
Engineering Plastics ◽  
Transition Points ◽  
Physical And Chemical ◽  
And Chemical Properties

The purpose of this study was to evaluate the physical and chemical properties of engineering plastics processed using supercritical CO2. First, we prepared disk-shaped test pieces via a general molding process, which were plasticized using supercritical CO2 at temperatures lower than the glass-transition points of engineering plastics. Amorphous polymers were plasticized, and their molecular weight remained nearly unchanged after treatment with supercritical CO2. The mechanical strength significantly decreased despite the unchanged molecular weight. The surface roughness and contact angle increased slightly, and electrical properties such as the rate of charging decreased significantly. These results suggest that supercritical CO2 could be used for a new molding process performed at lower temperatures than those used in general molding processes, according to the required properties.

Study of Micro-Arc Oxidation Process in Magnesium Surface

2012 ◽  
Vol 190-191 ◽  
pp. 595-598
Author(s):  
Ze Min Chen ◽  
Pin Lu ◽  
Qiu Hong Dong
Keyword(s):  
Corrosion Resistance ◽  
Constant Current ◽  
Constant Current Density ◽  
Oxidation Treatment ◽  
Test Pieces ◽  
Micro Arc Oxidation ◽  
Magnesium Surface ◽  
Hydroxyl Acid ◽  
Composition Structure

This study selected sodium silicate, sodium fluoride, glycerol hydroxyl acid, potassium hydroxide and phosphine oxide (LAP) as the stabilizer electrolyte, and then on micro-arc oxidation of magnesium with constant current density. The microstructure, corrosion resistance, chemical composition, structure and characterization of micro-arc oxidation film were determined by SEM and anodic oxidation methods. Experimental results indicated that the test pieces of magnesium would formed an silver-gray uniform densification oxide film on the surface by micro-arc oxidation treatment, and the corrosion resistance of magnesium film-formed had increased by potentiodynamic polarization curve testing.

Optical Diagnostics for Characterization of a Full-Size Fighter-Jet Afterburner

2005 ◽  
Author(s):  
H. Seyfried ◽  
G. Sa¨rner ◽  
A. Omrane ◽  
M. Richter ◽  
H. Schmidt ◽  
...  
Keyword(s):  
Spectral Characteristics ◽  
Aircraft Engine ◽  
Jet Stream ◽  
Outlet Nozzle ◽  
Full Size ◽  
Thermographic Phosphors ◽  
Unburned Fuel ◽  
Optical Laser ◽  
Dimensional Surface

In the present work the feasibility of using various optical/laser based techniques for characterization of the afterburner of a full-size aircraft engine have been investigated. The tests have been performed on-site at Volvo Aero Corporation and were mainly directed towards surface thermometry using thermographic phosphors and fuel visualization. All applications were studied for different engine running conditions, including various use of the afterburner (A/B). Laser-Induced Fluorescence (LIF) was employed for fuel visualization to investigate to what extent unburned fuel exits the afterburner. Laser-Induced Phosphorescence (LIP) from thermographic phosphors was used to measure two-dimensional surface temperatures on the outlet nozzle of the afterburner. In addition, the spectral characteristics of the burning jet stream were investigated.

Construction and characterization of a plasmid containing a nearly full-size DNA copy of bacteriophage MS2 RNA

1979 ◽  
Vol 128 (4) ◽  
pp. 595-619 ◽  
Author(s):  
René Devos ◽  
John van Emmelo ◽  
Roland Contreras ◽  
Walter Fiers
Keyword(s):  
Full Size ◽  
Bacteriophage Ms2
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