Tag: Lincoln

Alignment Marks

Applying the wet-out fiberglass layers can be a messy experience.  Sometimes these wetout layers are pre-cut and need to be applied in a specific orientation to fit properly. The following is part of the process used during the...

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Non-Destructive Testing with Ultrasound

Composite materials can become damaged in many different ways. There can also be flaws in the original manufacturing process. Many times it is necessary to identify any damaged areas within the composites layers that cannot be...

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Infusion-Test Panel and Fuselage

Ran across an interesting Youtube video demonstrating an epoxy resin infusion process on some test panels and fuselage.  It is interesting how everybody has their own terminology and technique for resin infusion.  There is...

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Panel Stiffness

Composites structures have requirements for stiffness to provide support and stability. Tests can be completed to identify the stiffness of a given area on a composites structure, i.e. how much it will bend for a given force....

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Vacuum Bagging Video

Vacuum bagging is a process that requires unique materials and processes, but can be simple to operation in an ongoing basis. There are many advantages to vacuum bag molding, a few of which include: Improved resin/glass ratio...

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Alligatoring Causes

One of the challenges of using Gelcoat is the potential for the defect called alligatoring. This is described as a wrinkled surface on the completed part after it is removed from the mold, and results in extensive post-mold...

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Gelcoat Application

Making a traditional fiberglass part is accomplished by working from the outside surface into the part. A clean and waxed mold is placed in a clean room where contamination will not interfere. Then gelcoat is sprayed on as the...

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Decorative Carbon Fiber

The automotive aftermarket makes use of decorative carbon fiber as an aesthetic means to differentiate a vehicle. Carbon fiber hoods, spoilers, and interior pieces add a cool aspect to many of the “tuner” vehicles...

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Trimming composite parts

I read an article on waterjet cutting of laminates recently, which demonstrated several advantages of using computer-controlled equipment for trimming and adding features to composites structures. Robotic-guided CNC routers have...

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Bagging/Infusion On The Cheap

Vacuum Infusion and Vacuum Bagging can be accomplished are not only reserved for industry and can be accomplished in a workshop setting. Relatively inexpensively as well. One of the major variables is the shape of the part...

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Stiff to the core

The thickness of the laminate will affect its stiffness. Stiffness can be increased by adding structural supports to the backside of the laminate, such as bulkheads and stringers in a boat. Another way to increase stiffness...

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