Semester	Lectures + Exercises	Subject Designation
IX	2 + 1	46641

 

Subject Holder:

Prof. Dr. Sc. Ivica Smojver

Asst. Prof. Darko Ivančević

 

Objective:

Introduction to design of composite aeronautical structures and specifics of their exploitation.

 

Description:

• Historical overview of composite’s applications in aeronautical structures
• Characteristics of composite materials. Choice of materials (fibre – matrix) depending on exploitation conditions.
• Current status of application in civil and military designs. Characteristic composite components. Basic characteristics of fighter, airliner and general aviation composite design.
• Helicopter composite components. Design of main rotor hub and propeller.
• Design general guidelines. Design methodology – optimisation based on cost / performance criteria.
• Static strength and stress concentration factors. Through-thickness strength.
• Joints and joining of dissimilar materials.
• Impact energy and impact damage. Bird strike. Structural improvements for damage tolerance. Residual strength. Crash resistance considerations. Lightning strike protection.
• Structural behaviour in the environment of increased temperature and moisture.
• Certification requirements. Structural testing at different levels - coupons, elements, components, full scale structure.
• Sandwich structures. Design and specifics.
• Composites design in aerospace and rocket structures. Design for extreme heat loading.
• Defects in structures. Damage classifications. Composite structures repairs. Bolted patches. Bonded repairs.
• Innovative design concepts and new applications technologies.

 

Teaching material:

As provided to students during lectures

 

Additional References:

• Tsai, S. W.: Theory of Composites Design, Think Composites, Dayton, 1993
• Niu, M.C.Y., Composite Airframe Structures, Conmilt Press, 1992
• Middleton, D. H.: Composite Materials in Aircraft Structures, Longman Scientific & Technical, Harlow, 1990
• Baker, A.A., Dutton, S., Kelly, D.: Composite Materials for Aircraft Structures, AIAA, 2004
• Gay, D., Hoa, S..V.: Composite Materials – Design and Applications, CRC Press, 2007