What question did this study set out to answer?

The research aims to create a protocol for assessing the mechanical properties of complex heat exchangers made using additive manufacturing.

March 26, 2026Open Access

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Development of Protocol for Evaluating the Mechanical Properties of Heat Exchangers with Complex Structures Fabricated via Additive Manufacturing

KYKotaro YOKOITokyo Metropolitan University SKS KobayashiYamaguchi University SSShizuki SATO

Key Points

The research aims to create a protocol for assessing the mechanical properties of complex heat exchangers made using additive manufacturing.
Utilized additive manufacturing using PLA materials through fused deposition modeling.
Examined variations in build orientation at 0° and 90°.
Conducted tensile testing on specimens with and without heat treatment.
Identified significant differences in mechanical properties based on build orientation.
Demonstrated that heat treatment impacted the tensile strength of specimens.

Abstract

Additive Manufacturing (AM) has enabled the fabrication of complex three-dimensional structures that are difficult or impossible to produce using conventional methods. This study aims to develop a design protocol for mechanically evaluating components—such as heat exchangers with intricate internal geometries—produced by AM without relying on post-process treatments like machining or heat treatment. Test specimens made of PLA were fabricated using Fused Deposition Modeling (FDM), with variations in build orientation (0° and 90°) and subjected to tensile testing both with and without heat treatment.

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Cite This Study

YOKOI et al. (Wed,) studied this question.

synapsesocial.com/papers/69c4ccc9fdc3bde44891850a https://doi.org/https://doi.org/10.1299/jsmedsd.2025.35.1409

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