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2015 cdmHUB Workshop
05 Jan 2016 | Series
Composites Design, Analysis and Manufacturing Workshop held at Purdue University on November 3-5, 2015. Both lectures slides and lecture videos are presented.
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2015 cdmHUB Workshop
05 Jan 2016 | Series
Composites Design, Analysis and Manufacturing Workshop held at Purdue University on November 3-5, 2015. Both lectures slides and lecture videos are presented.
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2015 cdmHUB Workshop
05 Jan 2016 | Series
Composites Design, Analysis and Manufacturing Workshop held at Purdue University on November 3-5, 2015. Both lectures slides and lecture videos are presented.
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A Semi-Discrete Model for Progressive Damage and Failure of Fiber Reinforced Laminates
15 Nov 2021 | Online Presentations | Contributor(s): Johnathan Goodsell
High-strength and high-stiffness carbon fiber-reinforced polymer composite laminates (CFRP) are being increasingly used for primary load bearing structures in many industries. The most common material system used is based on thermoset resins (matrix material), which come in the form of convenient...
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A Unified Theory for Constitutive Modeling of Composites
18 Apr 2016 | Publications
A unified theory for multiscale constitutive modeling of composites is developed using the concept of structure genomes. Generalized from the concept of the representative volume element, a structure genome is defined as the smallest mathematical building block of a structure. Structure...
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Adaptive Multi-Scale & Multi-Fidelity Progressive Failure Analysis of Composites
14 Nov 2022 | Online Presentations | Contributor(s): Johnathan Goodsell
Although high-fidelity modeling of progressive damage has advanced our understanding of failure mechanisms in fibre-reinforced composites, such techniques are currently still too computationally intensive for direct application to composite structures. The multi-scale nature of damage in...
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Adaptive Multi-Scale & Multi-Fidelity Progressive Failure Analysis of Composites
14 Nov 2022 | Online Presentations
Although high-fidelity modeling of progressive damage has advanced our understanding of failure mechanisms in fibre-reinforced composites, such techniques are currently still too computationally intensive for direct application to composite structures. The multi-scale nature of damage in...
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Automating the Lay-up of Geometrically Complex Composite Structures Made from Preimpregnated Reinforcements: a Route to a Roadmap
04 Nov 2020 | Online Presentations | Contributor(s): Johnathan Goodsell
A significant amount of research and industrial effort has been expended on the development of equipment such as automated fibre placement machines to lay-up prepregged reinforcements into structures of relatively simple geometry such as wing skins and spars, and fuselage structures. These...
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Bottom-up Composites Materials Design for Multifunctionality
02 Apr 2024 | Online Presentations | Contributor(s): Johnathan Goodsell
There are ample of evidence of materials hybridization at scale, even in nature, yields optimal respond to specific functions. In structural materials, hierarchical materials hybridization accounting for defects or porosity would offer optimal performance at reduced materials mass. Similar...
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Capillary Effects in Fiber Reinforced Polymer Composite Processing: A Zoom on the Flow Front
06 Apr 2022 | Online Presentations | Contributor(s): Johnathan Goodsell
Capillarity plays a major role in many natural and engineered systems, from nutrient delivery in plants, management of humidity in soils, to heat pipes and porous systems for spill recovery. In composite manufacturing, particularly in Liquid Composite Molding processes, capillary effects take...
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Composite Materials and Structures 1972-2012: Grand Challenges
19 Sep 2014 | Teaching Materials
Professor R. Byron Pipes presents the Grand Challenges for Composite Materials for the next 40 years at the American Society of Composites Conference in Arlington, TX on October 2, 2012.
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Composite Materials: Where We are and Where to Go (Mechanical and Electrical Properties of Polymer Composites)
02 Mar 2022 | Online Presentations | Contributor(s): Johnathan Goodsell
Composite materials have developed in the last 60 years from a just new material into a class of established engineering material with surprisingly outstanding properties. Best demonstrated as being the material of choice in the aerospace industry. The idea of fibre reinforced composites was to...
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Composite Stiffness Property Prediction
07 Aug 2017 | Downloads
Micromechanical models for the composite axial tensile, transverse tensile, and axial shear are combined into one tool with the objective of comparing their effectiveness as property prediction methods. Rule of mixtures models (ROM) and the composite cylinder model (CCM) results for...
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Composites Forming Simulations - on Physics & Data, Accuracy & Applicability
23 May 2023 | Online Presentations | Contributor(s): Johnathan Goodsell
Composites Forming processes, in particular stamp forming, offer the potential of high volume manufacturing of light weight structural parts. Such parts need to be designed with the process and its requirements in mind, in order to prevent process induced defects such as wrinkling or poor...
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Composites in Sports: A Testbed for Cutting-edge Technologies
01 Mar 2024 | Online Presentations | Contributor(s): Johnathan Goodsell
The use of new materials to enhance sports performance is inevitable, and the development of sports equipment and apparel stands as a significant industry. Frequently, cutting-edge materials like composites find extensive use in sports equipment and are often introduced on the playing field long...
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Computational evaluation of effective stress relaxation behavior of polymer composites
11 Jul 2017 | Publications
This paper presents a micromechanics model to characterize the effective stress relaxationstiffness of polymer composites. The linear viscoelastic behavior of polymer material wasmodeled by hereditary integral. The proposed model was established based on thevariational asymptotic method for unit...
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Control of Reaction Fronts for Rapid Energy-Efficient Manufacturing of Multifunctional Polymers and Composites
04 Jun 2021 | Online Presentations | 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 | Online Presentations | 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 | Online Presentations | 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