Fundamentals of Adhesive Bonding of Composite Materials PDF
Preview Fundamentals of Adhesive Bonding of Composite Materials
March 6, 2017 Fort Worth Convention Center Fort Worth, TX Fundamentals of Adhesive Bonding of Composite Materials Louis C. (Lou) Dorworth Dr. Giles Dillingham PRESENTED BY Abaris Training ©2017 Louis C. (Lou) Dorworth Dr. Giles Dillingham Direct Services Manager CEO and Chief Scientist Abaris Training Resources, Inc. BTG Labs LLC Reno, Nevada – USA Cincinnati, Ohio – USA • Tool Design Engineer • Founder of BTG Labs • Manufacturing Engineer • Materials Scientist • M&P Engineer • M&P Engineer • Educator Abaris Training ©2017 This is an Interactive Session-Please Feel Free to Ask Questions as We Go! Abaris Training ©2017 • Comparison of bonded vs mechanically fastened joints • Common joint failure modes • Definitions and terminology • Basic bonding requirements • Common bonded joint designs • Types of adhesives and applications • Adhesion Science • Surface preparation of composites • Fixturing and curing • Questions and discussion • Reference to metal bonding Abaris Training ©2017 Adhesively Bonded Joints Vs Mechanically Fastened Joints Abaris Training ©2017 • • Advantages Disadvantages • Straight forward design • Many parts • Inspectable • Stress concentration • Repairable • Relative weaker joint • Any thickness • Fatigue prone • Can be disassembled • Must seal the joint • Prone to fretting • Prone to corrosion Limitations: Point of structural weakness Induction of damage to structure Use on very thin laminates Abaris Training ©2017 Fastener Shear Fastener Pull Through Fastener Bending Net Tension Bearing Shear Out Combined Cleavage Shear and Tension Abaris Training ©2017 • Advantages • Disadvantages • Few parts • Difficult to inspect • Full load transfer • Surface preparation • Repairable • Environmental effects • Fatigue resilient • New design methods • Sealing • Trade skills required • Stiff connection • Thickness limited • Light-weight structure • Residual stresses • Smooth contour • Cannot be disassembled • Corrosion resistant • No concentrated stress • Shear loading only Limitations: Part thickness Part geometry Abaris Training ©2017 Failure Modes - ABJ Adherend Fracture Composite Interlaminar Tension Cohesive Shear Cohesive Peel Adhesive Shear Adhesive Peel Abaris Training ©2017 Bonding Definitions & Terminology Abaris Training ©2017
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