Additive Manufacturing On Layer-by-Layer Process and Its Applications

Author

P. INDUPRIYA, Dr. V. Rambabu


Abstract

 Additive manufacturing (AM) forms components by adding or solidifying material in successive layers from a digital design. This review examines how layer formation, material choice, interface quality, process settings, and feedback control affect performance. Five selected studies are considered: pellet-based printing of polylactic acid reinforced with pineapple leaf fiber (PLA/PALF), wire arc additive manufacturing (WAAM) of a graded three-steel structure, interlayer bonding in carbon-fiber composites, stereolithography (SLA) microfilters for water treatment, and temperature-feedback control for large-scale deposition.

Across the studies, design freedom alone does not ensure a reliable part. Performance depends on controlled material placement and the quality of interfaces within and between layers. Reported results include improved tensile and flexural response for selected PLA/PALF settings, measured strength and yield values for a tri-metallic WAAM build, temperature-sensitive bonding behavior in composites, high dimensional accuracy in SLA microfilters, and camera-based control of layer timing in large builds. The evidence is specific to the tested materials, geometries, and conditions. The review compares the studies, identifies limitations, and recommends application-focused process validation.


Keywords

additive manufacturing; layer-by-layer process; material extrusion; WAAM; interlayer bonding; stereolithography; process control.



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References


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