scholarly journals Adhesive bonding via exposure to variable frequency microwave radiation

1996 ◽  
Author(s):  
F.L. Paulauskas ◽  
A.D. McMillan ◽  
C.D. Warren
Keyword(s):  
Microwave Radiation ◽  
Adhesive Bonding ◽  
Variable Frequency

scholarly journals Adhesive Bonding Via Exposure to Variable Frequency Microwave Radiation

1996 ◽  
Vol 430 ◽  
Author(s):  
Felix L. Paulauskas ◽  
April D. McMillan ◽  
C. David Warren
Keyword(s):  
Microwave Radiation ◽  
Adhesive Bonding ◽  
Microwave Processing ◽  
Input Power ◽  
Epoxy Adhesive ◽  
Single Frequency ◽  
Homogeneous Distribution ◽  
Variable Frequency ◽  
Slight Reduction ◽  
Cure Time

AbstractAdhesive bonding through the application of variable frequency microwave (VFM) radiation has been evaluated as an alternative curing method for joining composite materials. The studies showed that the required cure time of a thermosetting epoxy adhesive is substantially reduced by the use of VFM when compared to conventional (thermal) curing methods. Variable frequency microwave processing appeared to yield a slight reduction in the required adhesive cure time when compared to processing by the application of single frequency microwave radiation. In contrast to the single frequency processing, the variable frequency methodology does not readily produce localized overheating (burnt or brown spots) in the adhesive or the composite. This makes handling and location of the sample in the microwave oven less critical for producing high quality bonds and allows for a more homogeneous distribution of the cure energy. Variable frequency microwave processing is a valuable alternative method for rapidly curing thermoset adhesives at low input power levels.

Adhesive Bonding Via Exposure to Microwave Radiation and Resulting Mechanical Evaluation

1996 ◽  
Vol 430 ◽  
Author(s):  
Felix L. Paulauskas ◽  
Thomas T. Meek ◽  
C. David Warren
Keyword(s):  
Microwave Radiation ◽  
Shear Test ◽  
Adhesive Bonding ◽  
High Volume ◽  
Radiation Curing ◽  
Alternative Processing ◽  
Lap Shear ◽  
Lap Shear Test ◽  
Wide Range ◽  
Single Lap Shear Test

AbstractAdhesive bonding/joining through microwave radiation curing has been evaluated as an alternative processing technology. This technique significantly reduces the required curing time for the adhesive while maintaining equivalent physical characteristics as the adhesive material is polymerized (crosslinked). This results in an improvement in the economics of the process. Testing of samples cured via microwave radiation for evaluation of mechanical properties indicated that the obtained values from the single lap-shear test are in the range of the conventionally cured samples. In general, the ultimate tensile strength, OB, for the microwave processed samples subjected to this single lap-shear test was slightly higher than for conventionally cured samples. This technology shows promise for being applicable to a wide range of high volume, consumer goods industries, where plastics and polymer composites will be processed.

Factors influencing adhesive bonding at the bone/implant interface

1992 ◽  
Vol 50 (2) ◽  
pp. 1114-1115
Author(s):  
Julie A. Martini ◽  
Robert H. Doremus
Keyword(s):  
Electron Microscopy ◽  
Adhesive Bonding ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Bone Implant ◽  
Factors Influencing ◽  
Lr White ◽  
Transmission Electron ◽  
New Zealand White Rabbits ◽  
Scanning Electron

Tracy and Doremus have demonstrated chemical bonding between bone and hydroxylapatite with transmission electron microscopy. Now researchers ponder how to improve upon this bond in turn improving the life expectancy and biocompatibility of implantable orthopedic devices.This report focuses on a study of the- chemical influences on the interfacial integrity and strength. Pure hydroxylapatite (HAP), magnesium doped HAP, strontium doped HAP, bioglass and medical grade titanium cylinders were implanted into the tibial cortices of New Zealand white rabbits. After 12 weeks, the implants were retrieved for a scanning electron microscopy study coupled with energy dispersive spectroscopy.Following sacrifice and careful retrieval, the samples were dehydrated through a graduated series starting with 50% ethanol and continuing through 60, 70, 80, 90, 95, and 100% ethanol over a period of two days. The samples were embedded in LR White. Again a graduated series was used with solutions of 50, 75 and 100% LR White diluted in ethanol.

Adhesive bonding of stainless steels and their component metals

2000 ◽  
Vol 27 (12) ◽  
pp. 1054-1059 ◽  
Author(s):  
H. Matsumura ◽  
N. Tanoue ◽  
M. Atsuta
Keyword(s):  
Stainless Steels ◽  
Adhesive Bonding

A primate restraint chair for use in microwave radiation studies

1974 ◽  
Author(s):  
Vernon R. Reno ◽  
John O. de Lorge ◽  
George D. Prettyman ◽  
Clayton S. Ezell ◽  
Toby A. Griner
Keyword(s):  
Microwave Radiation

Study of Variable Frequency Induction Heating in Steel Making Process

2010 ◽  
Vol 130 (10) ◽  
pp. 1131-1138 ◽  
Author(s):  
Kazuhiko Fukutani ◽  
Kenji Umetsu ◽  
Takeo Itou ◽  
Takanori Isobe ◽  
Tadayuki Kitahara ◽  
...  
Keyword(s):  
Induction Heating ◽  
Variable Frequency ◽  
Steel Making
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