Bonding
Block shear strength of adhesive bonds
Dr. Don Adams describes two methods (ASTM D 905 and ASTM D 4501) for loading adhesive bonds in direct shear while minimizing undesirable peel and through-thickness tensile stresses.
Read MoreCritical fiber sizing
To achieve desirable properties in composite components, adhesion between fiber and matrix must be optimized. Adhesion requires sufficient saturation with resin (wetout) at the fiber/matrix interface. To ensure good adhesion, attention must be given to fiber surface preparation, such as the use of a surface finish or
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Bonding Technology: Thermosetting Structural Adhesives
A wealth of epoxies, polyurethanes and acrylics speed assembly and cut manufacturing cost in an ever-wider range of composites applications.
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Testing Tech: Adhesion testing of sandwich panels
In my three preceding columns, I discussed the testing of sandwich panels as unit structures. This included flexural and shear testing of beams and panels. However, such tests — and hardware components that are designed accordingly — will not produce the desired results unless the adhesives that hold these panels
Read MoreBMWs Carbon Fiber Roof Attached With Polyurethane Adhesive
Automaker BMW stepped outside the box when it recently adhesive bonded carbon fiber/epoxy roofs to 1,500 limited-edition BMW M3 CSL sedans. The automaker wanted to enhance the car's performance by shedding as much weight as possible — other composite components include the doors, front skirt, trunk lid and rear bumper
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A guide to selection of methacrylate, urethane and epoxy adhesives
A practical examination of the complexities of adhesive selection.
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New film and paste adhesives for specialized applications
Customer performance demands drive thriving film and paste technology development.
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