Microwave Processing at the University of Florida

1994 ◽  
Vol 347 ◽  
Author(s):  
D. E. Clark ◽  
D. C. Folz ◽  
R. L. Schulz ◽  
Z. Fathi ◽  
A. D. Cozzi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Microwave Processing ◽  
Microwave Energy ◽  
Development Work ◽  
University Of Florida ◽  
Waste Remediation ◽  
Manufacturing Operations ◽  
Processing Techniques ◽  
The University

ABSTRACTMicrowave energy for processing materials is emerging as a vital manufacturing technology for the nineties and beyond. Research to date has shown significant advantages in several areas, including drying and sintering, joining, surface modification and waste remediation. Increased processing rates, improved physical and mechanical properties and, in some cases, reduced hazardous emissions have sparked the interest of many manufacturers in the ability to integrate microwave processing techniques into existing and future manufacturing operations. This presentation will provide an overview of the microwave processing research and development work in progress at the University of Florida.

scholarly journals Joint Effect of Steel Addition and Press-and-Sinter on the Properties of Low-Cost PM Ti Alloys

2018 ◽  
Vol 770 ◽  
pp. 248-254
Author(s):  
Leandro Bolzoni ◽  
Elisa Maria Ruiz-Navas ◽  
Elena Gordo
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Biomedical Applications ◽  
Low Cost ◽  
Physical And Mechanical Properties ◽  
Steel Powder ◽  
Joint Effect ◽  
Ti Alloys ◽  
Commercial Steel ◽  
Processing Techniques

Cheap alloying elements and creative processing techniques are a way forward to open up more industrial opportunities for Ti in sectors where it is not extensively applied yet, rather than in aerospace and biomedical applications. This study focuses on understanding the joint effect of using a commercial steel powder to add Fe to pure Ti and its processing by press-and-sinter on the behaviour of low-cost PM Ti alloys. It is found that the calibrated addition of steel permits to develop new low-cost Fe-bearing Ti alloys that can satisfactorily be produced using the blending elemental PM approach. Densification of the samples and homogenization of the chemical composition are enhanced by the high diffusivity of Fe. The low-cost α+β alloys reach comparable physical and mechanical properties to those of wrought-equivalent PM Ti alloys, such as Ti-6Al-4V, and are therefore promising candidates for load-bearing lightweight products.

scholarly journals Effect of repeated disinfections by microwave energy on the physical and mechanical properties of denture base acrylic resins

2009 ◽  
Vol 20 (2) ◽  
pp. 132-137 ◽  
Author(s):  
Rafael Leonardo Xediek Consani ◽  
Douglas Duenhas de Azevedo ◽  
Marcelo Ferraz Mesquita ◽  
Wilson Batista Mendes ◽  
Paulo César Saquy
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Flexural Strength ◽  
Physical And Mechanical Properties ◽  
Knoop Hardness ◽  
Microwave Energy ◽  
Bending Test ◽  
Denture Base ◽  
Acrylic Resins ◽  
The Impact

The present study evaluated the effect of repeated simulated microwave disinfection on physical and mechanical properties of Clássico, Onda-Cryl and QC-20 denture base acrylic resins. Aluminum patterns were included in metallic or plastic flasks with dental stone following the traditional packing method. The powder/liquid mixing ratio was established according to the manufacturer's instructions. After water-bath polymerization at 74ºC for 9 h, boiling water for 20 min or microwave energy at 900 W for 10 min, the specimens were deflasked after flask cooling and finished. Each specimen was immersed in 150 mL of distilled water and underwent 5 disinfection cycles in a microwave oven set at 650 W for 3 min. Non-disinfected and disinfected specimens were subjected to the following tets: Knoop hardness test was performed with 25 g load for 10 s, impact strength test was done using the Charpy system with 40 kpcm, and 3-point bending test (flexural strength) was performed at a crosshead speed of 0.5 mm/min until fracture. Data were analyzed statistically by ANOVA and Tukey's test (α= 0.05%). Repeated simulated microwave disinfections decreased the Knoop hardness of Clássico and Onda-Cryl resins and had no effect on the impact strength of QC-20. The flexural strength was similar for all tested resins.

Production of Titanium Alloy Components by Semi-Solid Forming

2012 ◽  
Vol 192-193 ◽  
pp. 515-520 ◽  
Author(s):  
Levente Kertesz ◽  
Mathias Liewald
Keyword(s):  
Mechanical Properties ◽  
Metal Forming ◽  
Medical Engineering ◽  
High Variability ◽  
Development Work ◽  
Forming Process ◽  
Forming Technology ◽  
Semi Solid ◽  
New Research ◽  
The University

The relatively high costs of processing titanium alloys and the high variability in the products' quality currently represent the major economic obstacles to using such materials in either production or medical engineering. For this reason, new research and development work at the Institute for Metal Forming Technology of the University of Stuttgart is pursuing the objective of improving and enhancing pre-existing processes for these types of materials. In doing this, aspects are considered which specify definite mechanical properties during and after the forming process as well as reduce the costs by means of cutting the manufacturing times, increase the use of semi-finished products and minimise finishing operations.

Effects of Processing Techniques on Morphology and Mechanical Properties of Epoxy-Clay Nanocomposites

2013 ◽  
Vol 652-654 ◽  
pp. 167-174 ◽  
Author(s):  
Nesar Merah ◽  
Muneer Al-Qadhi
Keyword(s):  
Mechanical Properties ◽  
Electron Microscope ◽  
Physical And Mechanical Properties ◽  
Processing Parameters ◽  
Clay Nanocomposites ◽  
Transmission Electron ◽  
Shear Mixing ◽  
Mixing Techniques ◽  
Processing Techniques ◽  
Morphology And Mechanical Properties

Proper dispersion of nano thin layered structure of nanoclay in polymer matrix offers new and greatly improved properties over pristine polymers. The degree of nanoclay dispersion and hence the improvements in the physical and mechanical properties depend greatly on the technique used and processing parameters. In this work, 2 wt.% epoxy-clay nanocomposites were fabricated using different mixing techniques to study the effect of mixing methods on the nanoclay dispersion and thus on the enhancement of the properties of the resultant nanocomposites. Three mixing techniques were explored: high shear mixing (HSM), ultrasonication and their combination as well as hand mixing. The effect of mixing techniques on morphology and mechanical properties of the resultant nanocomposites was investigated using scanning electron microscope (SEM), X-ray diffraction (XRD), transmission electron microscope (TEM) and tensile testing. The results of XRD and TEM showed that both exfoliated and disordered intercalated morphology were developed for the nanocomposites synthesized by HSM, while ordered intercalated morphology was observed for samples prepared by sonication. The tensile test results show that among the mixing techniques considered in this study HSM results in the optimum mechanical properties as a whole while hand mixing resulted in the worst physical and mechanical properties.

Innovations in Amber Processing Techniques and Technologies

2020 ◽  
pp. 86-90
Author(s):  
M.A. Perepelkin ◽  
V.V. Tyutyunin ◽  
V.I. Sklyanov ◽  
M.V. Kozlov
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Heterogeneous Material ◽  
General Information ◽  
Mechanical Equipment ◽  
Inclined Plane ◽  
Processing Techniques ◽  
Moving Parts

The paper reviews general information on amber as well as its physical and mechanical properties. A technology of amber mining and processing, its grading by size, shape and colour, segregation on an inclined plane, as well as separation using moving parts of various mechanical equipment are considered. Prospective technologies and methods for classifying amber into grades using friction grading machines are proposed to eliminate existing shortcomings in the technology currently used in production. Taking into account that each amber piece is unique and represents a heterogeneous material, the greatest efficiency can be achieved by combining different grading methods.

Crystallization of MgO • Al2 • SiO2 • ZrO2 glasses

1986 ◽  
Vol 44 ◽  
pp. 440-441
Author(s):  
M. A. McCoy
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Powder Processing ◽  
Glass Composition ◽  
Ceramic Powder ◽  
Transformation Toughening ◽  
Ceramic Powder Processing ◽  
Processing Techniques ◽  
Ceramic Matrices

Transformation toughening by ZrO2 inclusions in various ceramic matrices has led to improved mechanical properties in these materials. Although the processing of these materials usually involves standard ceramic powder processing techniques, an alternate method of producing ZrO2 particles involves the devtrification of a ZrO2-containing glass. In this study the effects of glass composition (ZrO2 concentration) and heat treatment on the morphology of the crystallization products in a MgO•Al2•SiO2•ZrO2 glass was investigated.

FloRunTM ‘331’ Peanut Variety

EDIS ◽  
2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Barry L. Tillman
Keyword(s):  
Seed Size ◽  
Growth Habit ◽  
Yield Potential ◽  
High Yield ◽  
University Of Florida ◽  
High Oleic ◽  
Central Stem ◽  
Research And Education ◽  
The University ◽  
High Yield Potential

FloRunTM ‘331’ peanut variety was developed by the University of Florida, Institute of Food and Agricultural Sciences, North Florida Research and Education Center near Marianna, Florida.  It was released in 2016 because it combines high yield potential with excellent disease tolerance. FloRunTM ‘331’ has a typical runner growth habit with a semi-prominent central stem and medium green foliage.  It has medium runner seed size with high oleic oil chemistry.

2011 BEEF FORAGE SURVEY RESULTS

EDIS ◽  
2016 ◽  
Vol 2016 (7) ◽  
Author(s):  
Sonja C. Crawford ◽  
Christa L. Kirby ◽  
Tycee Prevatt ◽  
Brent A. Sellers ◽  
Maria L. Silveira ◽  
...  
Keyword(s):  
Program Evaluation ◽  
Organizational Development ◽  
Management Practices ◽  
South Florida ◽  
University Of Florida ◽  
Development Unit ◽  
Survey Results ◽  
County Extension ◽  
Ranch Management ◽  
The University

The University of Florida / IFAS South Florida Beef Forage Program (SFBFP) is composed of county Extension faculty and state specialists.  The members, in conjunction with the UF/IFAS Program Evaluation and Organizational Development unit, created a survey in 1982, which is used to evaluate ranch management practices.  The survey is updated and distributed every 5 years to ranchers in 14 South Florida counties: Charlotte, Collier, DeSoto, Glades, Hardee, Hendry, Highlands, Hillsborough, Lee, Manatee, Martin, Okeechobee, Polk, and Sarasota.  The responses are anonymous.  

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