Strength prediction of polymer composite laminates under uncertainties using theory-guided machine learning

Add to your list(s) Download to your calendar using vCal

• Prof Pedro Camanho, Mechanical Engineering Department, University of Porto
• Friday 24 February 2023, 14:00-15:00
• Oatley Seminar Room, Department of Engineering.

If you have a question about this talk, please contact Hilde Hambro.

This work represents a first study towards the application of theory-guided machine learning techniques in the prediction of design allowables of notched polymer composite laminates accounting for material and geometric uncertainties. Building on data generated analytically, using either phase-field methods or finite fracture mechanics, and reduced representations of composite lay-ups, four machine learning algorithms are used to predict the strength of composite laminates with notches of several geometries and the corresponding statistical distribution, associated to material and geometrical variability.

Excellent representations of the design space (relative errors of around ±10%) and very accurate representations of the distributions of notched strengths and of the corresponding B-basis allowables used in aircraft structural design are obtained. Gaussian-based models proved to be the most reliable approach as a result of its continuous nature, accuracy, and fast training process. This work serves as basis for the prediction of first-ply failure, ultimate strength and failure mode of composite laminates based on non-linear finite element simulations across different length scales, providing significant reductions of the computational time required to virtually certify composite aircraft structures.

This talk is part of the Engineering - Mechanics and Materials Seminar Series series.

This talk is included in these lists:

• All Talks (aka the CURE list)
• Cambridge University Engineering Department Talks
• Cambridge talks
• Centre for Smart Infrastructure & Construction
• Computational Continuum Mechanics Group Seminars
• Engineering - Mechanics and Materials Seminar Series
• Engineering - Mechanics, Materials and Design (Div C) - talks and events
• Featured lists
• Interested Talks
• Lennard-Jones Centre external
• Oatley Seminar Room, Department of Engineering
• School of Technology
• Trust & Technology Initiative - interesting events
• bld31

Note that ex-directory lists are not shown.