Influence of Post-Processing on the Properties of Multi-Material Parts Obtained by Material Projection AM
Pablo Zapico1, Pablo Rodríguez-González2, Pablo Robles-Valero2
1Department of Construction and Manufacturing Engineering, University of Oviedo, Campus of Gijón, 33204 Gijón, Spain.
Polymers
|May 13, 2023
Summary
Post-processing significantly impacts multi-material 3D printed parts. Ultrasonic treatment with isopropyl alcohol harms flexible resins, while furnace treatment is best for rigid ones, ensuring optimal tensile behavior.
Area of Science:
- Materials Science
- Additive Manufacturing
- Mechanical Engineering
Background:
- Additive manufacturing enables complex geometries and multi-material parts, creating new design possibilities.
- Lack of standardization necessitates characterization for functional multi-material parts.
- Post-processing significantly influences final part quality, comparable to other process parameters.
Purpose of the Study:
- To investigate the effect of various post-processing techniques on the tensile behavior of multi-material parts.
- To identify optimal post-processing methods for different resin mixtures in additive manufacturing.
Main Methods:
- Manufacturing of multi-material parts using material projection additive manufacturing with resins of varying mechanical properties.
- Analysis of tensile behavior after applying different post-processing methods: ultrasonic treatment (with isopropyl alcohol and mineral oil) and furnace treatment.
Main Results:
- Ultrasonic treatment with isopropyl alcohol negatively affects the tensile behavior of more flexible resin mixtures.
- Ultrasonic treatment with mineral oil or furnace treatment are recommended for flexible resin mixtures.
- Furnace treatment is the optimal post-processing method for more rigid resin mixtures, with minimal performance degradation from other methods.
Conclusions:
- Post-processing selection is critical for achieving desired mechanical properties in multi-material additive manufactured parts.
- Tailoring post-processing to specific material compositions (flexible vs. rigid resins) is essential for performance optimization.
Related Concept Videos
02:18Interference and Diffraction
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
02:06Newman Projections
Different notations are used to represent the three-dimensional structure of molecules on two-dimensional surfaces. One of the most commonly used representations is the dash-wedge formula. The dashed wedges, solid wedges, and the plane lines indicate the groups situated behind the plane, coming out of the plane, and in the plane, respectively.
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
02:18Fischer Projections
Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines. While...
01:09Bending of Material: Problem Solving
In this lesson, determine the ratio of the maximum bending moments applied to two metal pipes, given that both pipes can withstand a maximum stress of 100 MPa. Both pipes have an outer radius of 1.8 cm. Pipe A has an inner radius of 1.5 cm, and Pipe B has an inner radius of 1 cm. The ratio of the maximum bending moment applied to two metallic pipes, each with a different inner and outer radius, is determined by considering their dimensions. The inner radius of the first pipe is 1.5 cm, and for...
01:11Bending of Members Made of Several Materials
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 material's...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
01:21Plastic Deformations of Members with a Single Plane of Symmetry
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...