Author
Gustavo Gonzalez Lozano
Other affiliations: Airbus Group
Bio: Gustavo Gonzalez Lozano is an academic researcher from Cranfield University. The author has contributed to research in topics: Finite element method & Composite laminates. The author has an hindex of 2, co-authored 2 publications receiving 87 citations. Previous affiliations of Gustavo Gonzalez Lozano include Airbus Group.
Papers
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01 Jun 2016
TL;DR: A review of the state-of-the-art on design for variable stiffness laminates can be found in this paper, where the authors highlight the current gaps and research needs, and present tools for analysis of the effect of manufacturing defects, manufacturing optimisation of gaps/overlaps or cycle time.
Abstract: The use of curvilinear fibre paths to develop variable stiffness laminates is now recognised as a promising technique offering great potential for performance improvements over conventional ‘straight fibre’ laminates. Its manufacture is feasible by fibre placement technologies, such as automated fibre placement. However, these technologies present a set of limitations that need to be included in the design to guarantee the manufacturability and quality of the composite laminates. Although this approach experiences an increasing interest from the specialised literature, most of the works completed overlook the manufacturing reality and, as a result, variable stiffness laminates are not used in industry. This work aims to provide a review of the State-of-the-Art on design for manufacture of variable stiffness in order to highlight the current gaps and research needs. As a conclusion, tools for analysis of the effect of manufacturing defects, manufacturing optimisation of gaps/overlaps or cycle time and the ...
109 citations
TL;DR: In this article, a multi-level approximation approach is used in combination with the method of successive approximations to optimise the fiber angle distribution of variable stiffness laminates.
27 citations
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01 Sep 2018
TL;DR: The main optimization methods used in laminated composite structure design, including the gradient-based methods, heuristic methods, and hybrid methods, are presented in this article, where the advantages and shortcomings of each method are discussed in detail.
Abstract: The advantages of laminated composite structures make them attractive in industrial applications. To achieve the maximum advantages of the composite structures, the design optimization is of great importance. This paper classifies and compares various optimization problems and methods in laminated composite structure design. Three kinds of problems are illustrated in this paper: constant stiffness design, variable stiffness design, and topology optimization. The main optimization methods used in laminated composite structure design, including the gradient-based methods, heuristic methods, and hybrid methods, are presented. The advantages and shortcomings of each method are discussed in detail. Finally, constant and variable stiffness design and topology optimization of laminated composite structures which have been solved in literature are reviewed.
94 citations
TL;DR: This literature review aims to demonstrate the use of lamination parameters for efficient multi-level optimization of robust and manufacturable nonconventional laminates by integrating the optimization process with manufacturing constraints and industry design guidelines.
87 citations
02 Jun 2019
TL;DR: The state of the art in modelling gaps and overlaps and assessing their influence on mechanical properties is presented and the research gaps and remaining issues are identified.
Abstract: The automated fiber placement process (AFP) enables the manufacturing of large and geometrical complex fiber composite structures with high quality at low cycle times. Although the AFP process is highly accurate and reproducible, manufacturing induced imperfections in the produced composite structure occur. This review summarizes and classifies typical AFP-related manufacturing defects. Several methodologies for evaluating the effects of such manufacturing defects from the literature are reviewed. This review paper presents recent scientific contributions and discusses proposed experimental and simulation-based methodologies. Among the identified ten defect classes, gaps and overlaps are predominant. This paper focuses then on methods for modelling and assessing gaps and overlaps. The state of the art in modelling gaps and overlaps and assessing their influence on mechanical properties is presented. Finally, research gaps and remaining issues are identified.
76 citations
TL;DR: In recent years, new revolutionary paradigms generally indicated using the term Industry 40, have been conceived and are progressively applied in several manufacturing systems to achieve a smarter manufacturing system as mentioned in this paper.
Abstract: In recent years, new revolutionary paradigms generally indicated using the term Industry 40, have been conceived and are progressively applied in several manufacturing systems to achieve a smarter
75 citations
TL;DR: This work considers two manufacturing constraints: tow path curvature and gaps/overlaps and concludes that layups featuring such patterns require strict constraints on bounds to ensure satisfaction of manufacturability requirements.
58 citations