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Article
Publication date: 10 July 2020

Juan Daniel Trejos, Luis Arturo Reyes, Carlos Garza, Patricia Zambrano and Omar Lopez-Botello

An experimental and numerical study of thermal profiles of 316 L stainless steel during selective laser melting (SLM) was developed. This study aims to present a novel approach to…

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Abstract

Purpose

An experimental and numerical study of thermal profiles of 316 L stainless steel during selective laser melting (SLM) was developed. This study aims to present a novel approach to determine the significance and contribution of thermal numerical modeling enhancement factors of SLM.

Design/methodology/approach

Surface and volumetric heat models were proposed to compare the laser interaction with the powder bed and substrate, considering the powder size, absorptance and propagation of the laser energy through the effective depth of the metal layer. The approach consists in evaluating the contribution of the thermal conductivity anisotropic enhancement factors to establish the factors that minimized the error of the predicted results vs the experimental data.

Findings

The level of confidence of the carried-out analysis is of 97.8% for the width of the melt pool and of 99.8% for the depth of the melt pool. The enhancement factors of the y and z spatial coordinates influence the most in the predicted melt pool geometry.

Research limitations/implications

Nevertheless, the methodology presented in this study is not limited to 316 L stainless steel and can be applied to any metallic material used for SLM processes.

Practical implications

This study is focused on 316 L stainless steel, which is commonly used in SLM and is considered a durable material for high-temperature, high-corrosion and high-stress situations.

Social implications

The additive manufacturing (AM) technology is a relatively new technology becoming global. The AM technology may have health benefits when compared to the conventional industrial processes, as the workers avoid extended periods of exposure present in conventional manufacturing.

Originality/value

This study presents a novel approach to determine the significance and contribution of thermal numerical modeling enhancement factors of SLM. It was found that the volumetric heat model and anisotropic enhancement thermal approaches used in the present research, had a good agreement with experimental results.

Details

Rapid Prototyping Journal, vol. 26 no. 9
Type: Research Article
ISSN: 1355-2546

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Available. Content available
Book part
Publication date: 12 November 2018

Abstract

Details

Supply Chain Management and Logistics in Latin America
Type: Book
ISBN: 978-1-78756-804-4

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Book part
Publication date: 17 February 2022

Marko Salvaggio

Drawing from two years of multi-sited fieldwork about international backpacking in Central America, I make important connections between the backpacking escape motive, the…

Abstract

Drawing from two years of multi-sited fieldwork about international backpacking in Central America, I make important connections between the backpacking escape motive, the backpacker hostel, and tourism. I explain how backpackers experience the hostel as their “home base” and “home away from home” to escape into local cultures and natural environments that exist outside of it and an international community of travelers that convenes inside of it. I refer to theories on modern tourism, the backpacking escape motive, and the concept of community. I also theorize how the global spread of modern amenities and tourism shapes backpackers' escape experiences.

Details

Subcultures
Type: Book
ISBN: 978-1-80262-663-6

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