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<p>This study examines the impact of ultrasonic treatment (UT) and ultrasonic welding (UW) on the tensile properties and structural integrity of single- and dual-material 3D-printed PLA and ABS components. Samples comprising PLA, ABS, and dual-material ABS/PLA configurations were fabricated via fused filament fabrication (FFF) and then subjected to either UT or UW. Tensile testing and scanning electron microscopy (SEM) were performed to assess the mechanical and structural changes induced by each method. Results indicate that UT enhances the tensile strength of single-material PLA by approximately 7.7% (from 35.2 MPa to 37.9 MPa) and ABS strength by around 7.3% (from 37.5 MPa to 40.3 MPa) due to improved interlayer bonding and reduced porosity. Dual-material ABS/PLA samples exhibited a tensile strength increase of about 5 MPa, reaching 35 MPa, compared to untreated samples. However, the elongation at fracture decreased significantly; in untreated samples, elongation was around 6%, while it reduced to approximately 3% following ultrasonic processing. These findings suggest that although ultrasonic methods can improve the mechanical performance of dual-material ABS/PLA 3D-printed components, further optimization is required to enhance interfacial bonding in dual-material configurations.</p>

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Impact of ultrasonic post-processing and welding on the tensile properties of single- and dual-material components comprising 3D-printed PLA and ABS

  • 期刊论文

  • 发表日期：

    2025年9月27日

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  • Abdolvahed Kami,
  • Vahid Fartashvand,
  • Abbasali Bagheri

摘要

This study examines the impact of ultrasonic treatment (UT) and ultrasonic welding (UW) on the tensile properties and structural integrity of single- and dual-material 3D-printed PLA and ABS components. Samples comprising PLA, ABS, and dual-material ABS/PLA configurations were fabricated via fused filament fabrication (FFF) and then subjected to either UT or UW. Tensile testing and scanning electron microscopy (SEM) were performed to assess the mechanical and structural changes induced by each method. Results indicate that UT enhances the tensile strength of single-material PLA by approximately 7.7% (from 35.2 MPa to 37.9 MPa) and ABS strength by around 7.3% (from 37.5 MPa to 40.3 MPa) due to improved interlayer bonding and reduced porosity. Dual-material ABS/PLA samples exhibited a tensile strength increase of about 5 MPa, reaching 35 MPa, compared to untreated samples. However, the elongation at fracture decreased significantly; in untreated samples, elongation was around 6%, while it reduced to approximately 3% following ultrasonic processing. These findings suggest that although ultrasonic methods can improve the mechanical performance of dual-material ABS/PLA 3D-printed components, further optimization is required to enhance interfacial bonding in dual-material configurations.