5 documents found, page 1 of 1
Study of fatigue crack propagation on modified CT specimens under variable ampl...
Santos, B.; Infante, Virginia; Barros, T.; Miguel Gomes Simões Baptista, RicardoThis study focuses on predicting fatigue crack paths and fatigue life in modified compact tension specimens, under mixed mode and variable amplitude loading conditions, using Machine Learning techniques. Mixed-mode conditions were induced by using specimens that incorporated holes with different radii and center coordinates. Initially, multiple Finite Element Method (FEM) simulations were conducted to determine...
Thermo-mechanical characterization of metal-polymer friction stir composite joi...
Correia, Arménio N.; Gaspar, Beatriz M.; Cipriano, Goncalo; Braga, Daniel F. O.; Miguel Gomes Simões Baptista, Ricardo; Infante, VirginiaWith the increasing demand for lighter, more environmentally friendly, and affordable solutions in the mobility sector, designers and engineers are actively promoting the use of innovative integral dissimilar structures. In this field, friction stir-based technologies offer unique advantages compared with conventional joining technologies, such as mechanical fastening and adhesive bonding, which recently demons...
Optimization of a cruciform specimen for fatigue crack growth under in and out-...
Baptista, R.; Infante, Virginia; Madeira, JFAMixed-mode loading conditions are present in different mechanical components. Understanding the influence of in-plane biaxial loading paths parameters allows for fatigue crack growth (FCG) prediction and component fatigue life assessment. Cruciform specimens are used to simulate these conditions, but large specimen dimensions are required in order to keep crack propagation unaffected by specimen geometry. This ...
Characterization and optimization of hybrid carbon-glass epoxy composites under...
Infante, Virginia; Madeira, JFA; Rui B. Ruben; Moleiro, Filipa; Teixeira De Freitas, SofiaThis work is intended to characterize the mechanical behavior of hybrid carbon-glass composite plates under combined loading of bending and torsion, and to determine the optimal ply fiber orientations to minimize the maximum out-of-plane displacement under such loading conditions. Hybrid composite plates were manufactured with 10 plies each and different stacking sequences using hand lay-up, with carbon fiber a...
Optimization of fibers orientation in a composite specimen
Monte, Sara M. C.; Infante, Virginia; Madeira, JFA; Moleiro, FilipaThis article is devoted to the study of the optimal design of fibers orientation in a composite specimen with the objective to minimize the displacement. The composite specimen considered is within the scope of aerospace and mechanical applications. The objective function associated with the composite design is computed based on a static analysis of a finite element solid model, which allows one to define (or c...