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Related Concept Videos

Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

143
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
143

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Updated: Jun 11, 2025

Additive Manufacturing of Functionally Graded Ceramic Materials by Stereolithography
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Functionally Graded Materials and Structures: Unified Approach by Optimal Design, Metal Additive Manufacturing, and

Rui F Silva1, Pedro G Coelho1,2,3, Carolina V Gustavo1

  • 1UNIDEMI, Department of Mechanical and Industrial Engineering, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.

Materials (Basel, Switzerland)
|September 28, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a digital workflow for creating Functionally Graded Materials (FGMs) by combining topology optimization and Wire-Arc Additive Manufacturing (WAAM). An optimized FGM beam design reduced bending stresses by 26%.

Keywords:
Functionally Graded MaterialsWire-Arc Additive Manufacturingadditive manufacturingmetalstopology optimization

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Area of Science:

  • Materials Science and Engineering
  • Additive Manufacturing
  • Computational Materials Design

Background:

  • Functionally Graded Materials (FGMs) offer superior performance compared to homogeneous materials.
  • Digitalization and additive manufacturing enable the creation of materials with tailored properties.
  • Joining dissimilar metals for compositional grading remains an underexplored area with significant engineering potential.

Purpose of the Study:

  • To propose a multidisciplinary methodology for creating structure-specific oriented FGM parts.
  • To address the metallurgical challenges in joining dissimilar metals for FGMs.
  • To develop a conceptual digital workflow for FGM design and manufacturing.

Main Methods:

  • Utilizing topology optimization for FGM design.
  • Employing multi-feed Wire-Arc Additive Manufacturing (WAAM) for synthesis.
  • Integrating image-based characterization and numerical validation with full-field deformation data.
  • Analytical validation of a layer-wise FGM concept using a beam under pure bending.

Main Results:

  • A conceptual FGM engineering workflow was proposed, enabling digital data conversion for geometry and compositional grading.
  • A case study of an optimized FGM beam (iron to copper gradient) demonstrated a 26% reduction in normal pure bending stresses.
  • The study validates the digital workflow for in silico processing towards experimental production.

Conclusions:

  • The proposed methodology offers a pathway for advanced FGM part fabrication.
  • Digital tools and additive manufacturing are crucial for realizing complex material gradients.
  • Further research can advance the experimental realization of FGMs based on this digital workflow.