Microwave penetration fiberglass

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Two microwave nondestructive testing techniques were used to inspect thick, stratified sandwich composites consisting of fiberglass epoxy laminates, foam and honeycomb constituents. Several different defects were embedded in these samples during their production. Each technique relies on the measurement of the reflected microwave energy from the composite samples using an open-ended rectangular waveguide as the inspection probe. The experiments were done at different frequencies and standoff distances based on the results of measurement parameter optimization conducted for each separate defect. The results of measurement parameter optimization conducted for each separate defect.
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2.45 GHz Microwave Processing and Its Influence on Glass Fiber Reinforced Plastics

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Microwave nondestructive evaluation of thick sandwich composites (Journal Article) | polosdefrance.com

During the production of fiber-reinforced composite materials, liquid resin is introduced into the fiber material and cured, i. An elevated temperature is needed for this curing. Microwave curing of composites has been investigated for some time, but it has mostly been done using small domestic or laboratory equipment. However, no investigation has been carried out using an industrial-sized chamber-microwave for glass fiber-reinforced plastic GFRP. Here, we show that microwave curing produces laminates of the same quality as oven-cured ones.
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Heating resins in Microwave

Log in or Sign up. Boat Design Net. Anyone here know what possible risks there are heating resins in a microwave if done carefully of course? I have a friend that heats epoxy in the microwave and says it is fine to do this. But I thought I'd ask here.
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Materials Engineering, Evaluation, and Inspection. Patented in the early s, the Spectrum Evisive process provides reliable, accurate and highly informative inspection results for defects located on the exteriors and interiors of non-metallic components. This advanced and field-proven microwave energy NDE technology has been used to inspect a wide range of non-metallic materials, including fiberglass reinforced piping, elastomers such as rubber expansion joints, plastics, ceramics, organic and ceramic composites and other advanced materials.
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