INFLUENCE OF SLS PARAMETERS ON STRENGTH AND FATIGUE DURABILITY OF POLYAMIDE-12

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This is an unedited manuscript accepted for publication and provided as an Article in Press for early access at the author’s request. The article will undergo copyediting, typesetting, and galley proof review before final publication. Please be aware that errors may be identified during production that could affect the content. All legal disclaimers of the journal apply.

Year : 2026 | Volume : 14 | 02 | Page :
    By

    G. Venkata Nagamani,

  • Sri Harsha Arigela,

  1. Research Scholar, Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Andhra Pradesh, India
  2. Assistant Professor, Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Andhra Pradesh, India

Abstract

Selective Laser Sintering (SLS), a laser-based polymer powder bed fusion process, has gained prominence in the fabrication of high-performance thermoplastics such as Polyamide-12 (PA12). This paper provides an extensive review of how key SLS process parameters—such as laser power, scan speed, hatch spacing, and energy density—affect the mechanical properties of PA12 components, with a specific focus on tensile strength and fatigue resistance. Studies demonstrate that increasing energy input enhances particle fusion and crystallinity, thereby improving mechanical strength and elongation at break. However, excessive energy may cause polymer degradation and compromise part quality. Furthermore, build orientation and part geometry were found to significantly affect fatigue behavior, while environmental conditions such as powder aging and moisture absorption further impact mechanical performance. Advanced optimization strategies using machine learning, statistical design of experiments (DoE), and finite element modeling (FEM) are also reviewed, offering predictive tools for process tuning. These findings highlight the necessity of precise parameter control to ensure structural integrity and functional reliability of PA12 parts manufactured via SLS.

Keywords: Selective Laser Sintering, Polyamide-12, Fatigue Durability, Process Parameters, Mechanical Strength, Energy Density.

How to cite this article:
G. Venkata Nagamani, Sri Harsha Arigela. INFLUENCE OF SLS PARAMETERS ON STRENGTH AND FATIGUE DURABILITY OF POLYAMIDE-12. Journal of Polymer & Composites. 2026; 14(02):-.
How to cite this URL:
G. Venkata Nagamani, Sri Harsha Arigela. INFLUENCE OF SLS PARAMETERS ON STRENGTH AND FATIGUE DURABILITY OF POLYAMIDE-12. Journal of Polymer & Composites. 2026; 14(02):-. Available from: https://journals.stmjournals.com/jopc/article=2026/view=239422


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Ahead of Print Subscription Original Research
Volume 14
02
Received 21/08/2025
Accepted 27/10/2025
Published 30/03/2026
Publication Time 221 Days
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