Composite structures

Objectives

Develop the fundamental aspects of laminated and sandwich plate theories. The classical theory of laminates is developed, and the study of the influence of layer stacking enables us to understand the coupling phenomena between membrane, bending and flexural behavior
Deepen knowledge of organic composite materials applied to aeronautical structures
Raise awareness of corporate social responsibility
Deepen knowledge of elastomer materials applied to aeronautical structures.

Skills acquired

Discuss organic composite materials with a specialist in the field of manufacturing and repair
Manufacture a sandwich structure (NIDA or foam)
Identify the physical phenomena involved in manufacturing organic composite materials using the two manufacturing methods (wet and dry process)
Use SRM-type aircraft documentation to produce a work card for two types of repair (structural and cosmetic)
Repair a NIDA composite structure (structural or cosmetic),
Communicate in order to summarize manufacturing or repair work
Select a suitable assembly and implementation technique


Skills acquired at independent mastery level

Mobilize a broad field of fundamental and technical sciences related to aeronautical and space mechanical systems, and have the associated capacity for analysis and synthesis
Design and dimension mechanical systems
Choose and implement the relevant analysis and characterization methods for mechanical systems
Communicate and work as part of a team Manage and lead a work unit or a project group
Integrate into a professional environment in France or abroad Communicate orally and in writing in English





Skills acquired at the supervised master's level

Design, dimension, implement and test a metallic or composite repair/modification
Have a global systemic approach to mechanical systems Reason in a context of international regulatory constraints
Anticipate, decide in a situation of uncertainty Be results-oriented (costs, deadlines, quality) and customer-oriented
Evaluate one's own skills and steer one's career path


Skills acquired - Level : In progress

Integrate financial, legal and contractual aspects into engineering practice

AP6SASCO + AP8SACPR

Contents

Elastic behavior of a unidirectional composite material.

General information on laminate theory
Classical laminate theory
Influence of layer stacking, study of fabric-reinforced materials
Fundamental relationships and energy formulation of classical laminate theory
Taking transverse shear into account in laminate theory
Sandwich plate theory




Joining composite structures :

Presentation of techniques for making complete connections adapted to composites (welding, gluing, riveting and bolting)
Operating precautions linked to the composite nature of a substrate
Reinforcement of composite structures, application of assembly techniques to the repair of composite structures




Manufacture and repair of composite structures:

TP1 - Manufacture of a sandwich structure (NIDA or foam). Analysis of the manufacturing process and the final product to understand the physical phenomena involved in obtaining a part in composite materials. Production of a summary document presenting the manufacturing process and the problems encountered. Presentation of the synthesis to the group
TP2 -Use the Structural Repair Manual to produce a repair work card (structural or cosmetic). Production of a summary document presenting the work map and the problems encountered. Presentation of the synthesis to the group
TP3 - Repair of a NIDA sandwich structure (structural or cosmetic).
Production of a synthesis document presenting the repair process and the problems encountered. Presentation of the synthesis to the group







Physico-chemical properties of elastomers
Formulation and processing of elastomers
Mechanical properties of elastomers
Presentation of mechanical behavior models for elastomers
Case studies for aeronautics and space



Teaching method
Teaching associated with online resources under Moodle. Practical work is associated with Moodle preparation. Practical work is assessed in real time using online questionnaires to be completed as the activity progresses
Synthesis and group communication activities will be preceded by peer assessment via Moodle.

Aeronautical structures