In addition to the robust educational conference sessions during CAMX, attendees can take an in-depth look at specific topics with Pre-conference Tutorials. These three hour courses, held in the afternoon of Monday, December 11th and Tuesday, December 12th, immerse attendees of all technical backgrounds in a single area of focus. Tutorials are included with a Premium registration, and are available for purchase separately with all other registration types.
**Tutorials are now taking place on Monday and Tuesday afternoon, as shown below**
Clint Luttgeharm, PE, TECHcetera
The advanced materials, manufacturing processes, and design tools available to today’s design engineer provide options that can be overwhelming. Identifying and then navigating through this maze of possibilities requires a broad perspective. In an attempt to “teach by example”, this session will discuss prior design projects presenting specific design challenges and the methods used to address them. Techniques for design optimization will also be discussed.
Steve Nutt & Timotei Centea, University of Southern California
Sandwich structures, formed by bonding two composite facesheets to a honeycomb core, offer high specific strength and stiffness, and are frequently used in aerospace and other weight-critical applications. The manufacture of honeycomb core sandwich structures is complex, particularly if the facesheets are simultaneously cured and bonded to the core using film adhesive (co-cure). For this reason, material and process selection is challenging, ad sandwich structures often exhibit higher defect levels than monolithic parts. This tutorial will cover key materials and processing aspects associated with the manufacturing of honeycomb core sandwich structures, with emphasis on co-cure. First, the relevant properties of the prepreg facesheets, film adhesive, and honeycomb core will be discussed. Then, the key physics of co-cure and their impact on processing and defects will be described. Finally, the tutorial will address broader manufacturing considerations and highlight desirable areas for further technical development.
Roger Tietze, Part Consulting LLC
The tutorial will introduce thermoset resin chemistry in applications for composites, adhesives, electrical, coating, and other applications in Industry. The applications will cover both industrial, space, and military materials used today. The chemistries covered will be epoxies, vinyl esters, polyesters, bismaleimides, polyimides, cyanate esters, benzoxazines, and other thermosets. The course will have typical examples of each chemistry, curing reactions, and application uses. Each of the different chemistries have technical advantages and limitations which will relate to their uses in different applications for today’s markets. This course is not a basic chemistry course; it is meant to educate attendees in thermoset chemistry, and relate it to everyday use in industry.
Lou Dorworth, Abaris Training Resources
Dr. Giles Dillingham, Btg Labs
This tutorial examines the practical methods and techniques and essential science necessary for achieving long-lasting adhesive bonds to laminated FRP composite structures. The discussion focuses on subtle but important factors in surface preparation; including the use of prepreg vs dry peel ply, abrasive materials and methods, media blasting, laser and plasma treatments, surface cleanliness, and surface quality & validation. Other topics include; adhesive selection, adhesive wetting, bondline thickness control and carrier selection, bonding to core materials, obtaining uniform clamping pressure along the joint, and as assuring proper adhesive cure. The session also incorporates an overview of the effect of fiber forms/orientation at interfacial surfaces and a comparison of failure modes in bonded vs bolted structures. This is an active learning event and attendees are encouraged to participate in the discussion..
Dr. Anoush Poursartip & Dr. Goran Fernlund, University of British Columbia
From the early days of composites, it has been evident that the use of analysis and modelling is critical for the success and growth of the field. Computational power has increased by twelve orders of magnitude since the first calculators were used to do lamination plate theory calculations, and today there is significant capability and potential to use computational multi-scale modelling to understand, de-risk, and optimize composites manufacturing and design. At the same time, the explosion in the use of increasingly larger and more complex composite structures has increased the need to get the manufacturing processes right the first time and every time.
This tutorial presents a state of the art overview of (a) the science underlying composites process modelling at all levels: from materials modelling to full scale structural modelling; (b) the technology offerings currently available to exercise the science for industrial applications; and (c) examples of applications. Modelling at different scales (e.g. materials, micromechanics, structure) as well as different physics and effects (e.g. cure, crystallization, exotherm, wrinkling, porosity, residual stress, and deformation) will be covered. Issues such as materials characterization for input to the models, quality of predictions, and effectiveness of the methodologies will be discussed. Current and future opportunities to use modelling as an enabling tool, and trends in research and practice will also be covered. Overall, tutorial attendees will gain a balanced perspective of how computational process modelling is changing the composites field in general, and how they should evaluate its applicability for the benefit of their products.
Dr. Rik Heslehurst, Abaris Training Resources
This half-day tutorial has been developed specifically for engineers who are required to develop methodologies and determine material properties of composites and adhesively bonded structures with the aim of obtaining design allowable properties. The tutorial quickly develops a broad understanding of composite and adhesively bonded structure requirements, and provides a detailed review of the design allowable requirements set by certifying agencies. Fundamentals of testing, i.e. specimen preparation, experimental stress analysis techniques, physical testing regimes and data reduction, are covered in detail during the course. Aspects of detailed design (joints and holes) and the service environment are considered, as well as the preparation of material property substantiation reports.
Dr. Robert E. Steffen, PE, Western Carolina University
This short course will first present the background and design issues of FRP materials in construction- where/why they are used, the limitations, and the advantages/disadvantages over conventional materials such as aluminum, steel, wood (including cross laminated timber) and reinforced concrete with case examples discussed. The instructor will show how design team members design, engineer, and quickly analyze FRP materials used as components, full assemblies, or as strengthening material placed upon existing structures, by explaining relevant variables used in classical lamination theory (CLT), plate buckling, and connection strength determination to name a few concepts. Engineering limitations will be understood as well as readily available FRP design resources. Finally, the instructor will use his 20 years of FRP design and engineering experience to explain the major issues for both architectural and engineering applications, and how to successfully design for unique project demands.
Arnt Offringa, Fokker Aerostructures
This tutorial on thermoplastic composites focuses on thermoplastic materials, processes and applications for the aerospace market. After an introduction on trends and the need for low weight structures, an overview of thermoplastic polymer types and different forms of thermoplastic composites is given. The reasoning behind thermoplastics is then explained, followed by a number of processing techniques. In the second part of the tutorial, successful aerospace applications are presented, followed by current developments and an outlook towards the future. The tutorial concludes with a note on thermoplastics in automotive.