Presented By: Aerospace Engineering
Aerospace Engineering Department Seminar: Fracture of Composite Laminates Across the Scales: Physical Models and AI-Based Surrogates
Pedro Camanho
Professor
Mechanical Engineering
University of Porto
Abstract:
The accurate prediction of the onset and grow of damage mechanisms in laminated polymer composite materials, as well as the final collapse of composite structures, has been challenging the scientific community over the last decades. In this presentation, several analysis models that span different time and length scales will be described. Computational micromechanical models enable the detailed representation of the damage mechanisms at the scale of the reinforcing fibers, however this level of detail is associated with high computational costs, especially when using direct numerical simulations. This calls for the development of mesomechanical models that use information obtained at smaller scales. Mesomechanical models typically combine continuum damage mechanics, which represent ply damage, with cohesive zone models, which represent delamination. While being a methodology that properly balances accuracy with reasonable computing times, mesomechanical models are not well-suited to perform uncertainty quantification and management analysis as the computational cost would be far too high. This calls for macromechanical models, developed at the length scale of the laminate, and their combination with machine learning techniques. This work will show how to use theory-guided machine learning to generate B-basis allowables used in the certification of composite aircraft structural details.
Bio:
Pedro Camanho (MSc in Mechanical Engineering, UPorto, 1995) received his PhD in Composite Materials from the Department of Aeronautics, Imperial College London, UK, in 1999. In the same year he joined the Institute of Mechanical Engineering and Industrial Management as Director of the Structural Integrity Unit and the Department of Mechanical Engineering of the University of Porto as Assistant Professor. Since 2014 he has been Full Professor at the Department of Mechanical Engineering of the University of Porto. Pedro Camanho is currently the President of the Associated Laboratory in Energy, Transportation and Aeronautics.
The main research interests of Pedro Camanho are the mechanics of deformation and fracture of advanced polymer composite materials, and new concepts for lightweight composite materials and structures for aerospace applications such as hybrid, nano-structured, multi-functional, variable-stiffness, morphing, energy-storage and ultra-thin composites.
Pedro Camanho is member of the Editorial Board of the International Journal of Solids and Structures (Elsevier), Composites Part A (Elsevier), European Journal of Computational Mechanics (Taylor & Francis), and Computers, Materials and Continua (Tech Science Press). He was invited to give several plenary lectures, and he was chairman of the 3rd Composites Testing and Model Identification Conference - CompTest (2006) and of the 1st ECCOMAS Conference on the Mechanical Response of Composites (2007). Pedro Camanho was Visiting Scientist at NASA-Langley Research Center and at the U.S. Air Force Research Laboratory. He was Royal Society Visiting Professor at Imperial College London and Visiting Professor at the Laboratoire de Mécanique et Technologie, École Normale Supérieure de Cachan - Université Paris-Saclay.
Pedro Camanho coordinated several research projects funded by the European Space Agency, Airbus, NASA, Embraer, Daimler AG, Aernnova, European Union, FCT, and US Air Force. Pedro Camanho is the recipient of the 2006 NASA - H.J.E. Reid Award for Outstanding Scientific Paper, of the 2005 Young Researcher in Applied and Computational Mechanics Award from the Portuguese Association of Theoretical, Applied and Computational Mechanics, the 2005-2009 Engineering Fracture Mechanics Most Cited Articles Award, and the 2016 Mechanics of Materials Highly Cited Research Award. He also received the 2020 Excellence in Research Award of the University of Porto, and the Career Award from the Portuguese Society of Fatigue and Structural Integrity.
Pedro Camanho published over 150 papers in international peer reviewed journals that received over 15,000 independent citations (Scopus h-index of 59, independent citations). His work has been successfully transferred to the industry and services: finite elements implemented by ABAQUS (Dassault Systèmes), materials models implemented in LS-DYNA and MSC-NASTRAN (Digimat), failure criteria in HYPERSIZER, ESACOMP and ANSYS, and test methods that are used by both the automotive and aeronautical industries. Pedro Camanho was member of the Council of the European Mechanics Society (EUROMECH), and of the Council of the European Society for Composite Materials (ESCM). In 2020 he was elected Fellow of the Royal Aeronautical Society (https://www.aerosociety.com/).
Pedro Camanho was Director of the MIT-Portugal Engineering Design and Advanced Manufacturing focus area doctoral program in Leaders for Technological Industries. He is member of the Programme Committee of the International Council of the Aeronautical Sciences, and co-inventor of a patent on energy harvesting and storage composite structure.
Seminar - McDivitt Conference Room & Zoom - https://umich.zoom.us/j/95079073031
Professor
Mechanical Engineering
University of Porto
Abstract:
The accurate prediction of the onset and grow of damage mechanisms in laminated polymer composite materials, as well as the final collapse of composite structures, has been challenging the scientific community over the last decades. In this presentation, several analysis models that span different time and length scales will be described. Computational micromechanical models enable the detailed representation of the damage mechanisms at the scale of the reinforcing fibers, however this level of detail is associated with high computational costs, especially when using direct numerical simulations. This calls for the development of mesomechanical models that use information obtained at smaller scales. Mesomechanical models typically combine continuum damage mechanics, which represent ply damage, with cohesive zone models, which represent delamination. While being a methodology that properly balances accuracy with reasonable computing times, mesomechanical models are not well-suited to perform uncertainty quantification and management analysis as the computational cost would be far too high. This calls for macromechanical models, developed at the length scale of the laminate, and their combination with machine learning techniques. This work will show how to use theory-guided machine learning to generate B-basis allowables used in the certification of composite aircraft structural details.
Bio:
Pedro Camanho (MSc in Mechanical Engineering, UPorto, 1995) received his PhD in Composite Materials from the Department of Aeronautics, Imperial College London, UK, in 1999. In the same year he joined the Institute of Mechanical Engineering and Industrial Management as Director of the Structural Integrity Unit and the Department of Mechanical Engineering of the University of Porto as Assistant Professor. Since 2014 he has been Full Professor at the Department of Mechanical Engineering of the University of Porto. Pedro Camanho is currently the President of the Associated Laboratory in Energy, Transportation and Aeronautics.
The main research interests of Pedro Camanho are the mechanics of deformation and fracture of advanced polymer composite materials, and new concepts for lightweight composite materials and structures for aerospace applications such as hybrid, nano-structured, multi-functional, variable-stiffness, morphing, energy-storage and ultra-thin composites.
Pedro Camanho is member of the Editorial Board of the International Journal of Solids and Structures (Elsevier), Composites Part A (Elsevier), European Journal of Computational Mechanics (Taylor & Francis), and Computers, Materials and Continua (Tech Science Press). He was invited to give several plenary lectures, and he was chairman of the 3rd Composites Testing and Model Identification Conference - CompTest (2006) and of the 1st ECCOMAS Conference on the Mechanical Response of Composites (2007). Pedro Camanho was Visiting Scientist at NASA-Langley Research Center and at the U.S. Air Force Research Laboratory. He was Royal Society Visiting Professor at Imperial College London and Visiting Professor at the Laboratoire de Mécanique et Technologie, École Normale Supérieure de Cachan - Université Paris-Saclay.
Pedro Camanho coordinated several research projects funded by the European Space Agency, Airbus, NASA, Embraer, Daimler AG, Aernnova, European Union, FCT, and US Air Force. Pedro Camanho is the recipient of the 2006 NASA - H.J.E. Reid Award for Outstanding Scientific Paper, of the 2005 Young Researcher in Applied and Computational Mechanics Award from the Portuguese Association of Theoretical, Applied and Computational Mechanics, the 2005-2009 Engineering Fracture Mechanics Most Cited Articles Award, and the 2016 Mechanics of Materials Highly Cited Research Award. He also received the 2020 Excellence in Research Award of the University of Porto, and the Career Award from the Portuguese Society of Fatigue and Structural Integrity.
Pedro Camanho published over 150 papers in international peer reviewed journals that received over 15,000 independent citations (Scopus h-index of 59, independent citations). His work has been successfully transferred to the industry and services: finite elements implemented by ABAQUS (Dassault Systèmes), materials models implemented in LS-DYNA and MSC-NASTRAN (Digimat), failure criteria in HYPERSIZER, ESACOMP and ANSYS, and test methods that are used by both the automotive and aeronautical industries. Pedro Camanho was member of the Council of the European Mechanics Society (EUROMECH), and of the Council of the European Society for Composite Materials (ESCM). In 2020 he was elected Fellow of the Royal Aeronautical Society (https://www.aerosociety.com/).
Pedro Camanho was Director of the MIT-Portugal Engineering Design and Advanced Manufacturing focus area doctoral program in Leaders for Technological Industries. He is member of the Programme Committee of the International Council of the Aeronautical Sciences, and co-inventor of a patent on energy harvesting and storage composite structure.
Seminar - McDivitt Conference Room & Zoom - https://umich.zoom.us/j/95079073031
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