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Control of Reaction Fronts for Rapid Energy-Efficient Manufacturing of Multifunctional Polymers and Composites
04 Jun 2021 | Contributor(s): Johnathan Goodsell
This lecture describes a new manufacturing platform technology that allows for near net-zero energy fabrication of structural polymers and composites. The approach is predicated on the exploitation of a self-propagating polymerization reaction occurring in a system undergoing reaction and...
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Defect Coupling Predicting the Strength and Life of Fiberous Composite Laminates
16 Oct 2020 | Contributor(s): Johnathan Goodsell
After more than 30 years of careful experimental investigation and exhaustive development of discrete damage analysis methods including integrated computational mechanics methods, our community knows a great deal about how discrete defects such as matrix cracks and defect growth (e.g....
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Development of Fiber Microstructure during Processing of Discontinuous Fiber Reinforced Composite Products
19 Apr 2024 | Contributor(s): Johnathan Goodsell
Discontinuous fiber-reinforced composites are a special subcategory of composite materials that are used, due to the ability to process them into parts and structures of complex shape in an automated fashion via compression and injection molding, as well as extrusion processes. Discontinuous...
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DiBenedetto Equation: Tg and DOC
23 Jul 2014 | Tools
DiBenedetto Equation: Glass Transition Temperature Dependence on Degree of Cure
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Effective Lamina and Laminate Properties
22 May 2013 | Tools
Calculate effective lamina and laminate properties from phase properties and layup.
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Emerging Role of Process Models & Simulations in Composites Manufacturing
07 Dec 2020 | Online Presentations | Contributor(s): Johnathan Goodsell
This talk will highlight the ever increasing benefits of process modeling in Composite Manufacturing processes. First, the use of science base approach of materials processing, which integrates material parameters with transport phenomena at various scales during manufacturing to create...
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Fiber Orientation Prediction for Discontinuous Fiber Composites: Fundamentals and Future Trends
08 Feb 2023 | Online Presentations | Contributor(s): Johnathan Goodsell
When composite materials with discontinuous fibers are processed into their final shape, any flow alters the fiber orientation pattern and affects the properties of the final composite. It is now standard practice to predict fiber orientation patterns and the resulting mechanical properties in...
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Fiber-Optic-Based In-Process Monitoring of CFRP Structures for Material Quality Assurance
27 Jan 2022 | Online Presentations | Contributor(s): Johnathan Goodsell
Although carbon fiber reinforced polymer (CFRP) composites have been used extensively in many aerospace structures such as Boeing 787 and Airbus 350, low-cost and high-rate production CFRP are highly demanded for next-generation single-aisle commercial aircraft. Competition has been increasing...
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Fibrous Shell Approach and 3D Second Gradient Modeling for Textile Composite Draping
10 Dec 2021 | Online Presentations | Contributor(s): Johnathan Goodsell
Composite manufacturing processes are often complex and process simulation is a way to avoid costly trial-anderror development. Simulations of composites textile reinforcements draping use shell finite elements for which the bending behavior is very particular. The fibrous composition of the...
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Forming simulation using PAM-FORM, AniForm, LS-DYNA, and ABAQUS
18 Jul 2017 | Animations
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Free Edge Elasticity Solution
22 May 2013 | Tools
Simulate stress, strain and displacements in an composite angle-ply laminate subjected to uniform axial extension, anticlastic curvature and thermoelastic deformation.
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Free Edge Stress Analysis of Laminated Structures with Arbitrary Cross Sections Using Mechanics of Structure Genome
28 May 2014 | Publications
This is the master thesis from Lingxuan Zhou advised by Prof. Yu. In this thesis, free-edge stress analysis of composite laminated structures with arbitrary cross sections is dealt with using mechanics of structure genome (MSG). A cross-sectional analysis specialized from MSG is...
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Free-Edge Elasticity Solution: Tool Taxonomy and Evaluation
22 May 2013 | White Papers/Research Documents
A review of the free-edge elasticity solution tool, including tool taxonomy and evaluation. An overview of the solution development is provided, followed by numerous examples of tool use and evaluation. The document concludes with an evaluation of the tool maturity level. The...
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Generalized Free-Edge Stress Analysis Using Mechanics of Structure Genome
28 May 2014 | Publications
This work reveals the potential of mechanics of structure genome (MSG) for the free-edge stress analysis of composite laminates. First, the cross-sectional analysis specialized from MSG is formulated for solving a generalized free-edge problem of composite laminates. Then, MSG and the companion...
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Global Composites Experts Webinar Series
12 Aug 2020 | Series | Contributor(s): Johnathan Goodsell
The webinars examine the history, present capabilities, and future of composites science and technology. The goal of the series is to accumulate the vast knowledge of composites that has been developed over the past 50 years and to make it available to the global composites community. Each...
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Halpin-Tsai Micromechanics Model
22 May 2013 | Tools
Calculate homogenized lamina properties from fiber and matrix properties
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HyperSizer Pro Software from Collier Research
22 May 2013 | Tool Information
HyperSizer® is Design, Analysis, and Optimization Software for Composite and Metallic Structures HyperSizer is used throughout the design process--including certification--to quantify all critical failure modes, reduce structural weight, and sequence composite laminates for fabrication to...
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Imparting Robustness to Out-of-Autoclave Prepregs
09 Mar 2023 | Online Presentations | Contributor(s): Johnathan Goodsell
Autoclaves have long been used to ensure robustness in the production of composite parts. However, they present a production bottleneck, as well as high capital and recurring costs. Out-of-autoclave prepregs were introduced to allow oven curing and thereby address some of these issues. These OoA...
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Injection Overmolding Manufacturing Process Simulation
29 Jun 2017 | Online Presentations
Injection over-molding or hybrid molding is a high-rate composites manufacturing process for fabrication of structural components with complex geometries. The structural backbone is provided by a continuous-fiber woven prepreg while the geometric complexity is realized via injection...
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Interlaminar Stresses in Symmetric Angle-Ply Laminates Subjected to Anticlastic Bending Deformation
04 Jun 2014 | Tool Information
The aim of the present work is to develop a solution for the interlaminar stress field in a symmetric and balanced, angle-ply laminate subjected to anticlastic bending deformation. Further, this class of problems is considered in order to elucidate the behavior of angle-ply laminates...