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Title: Infrared preheating to improve interlayer strength of big area additive manufacturing (BAAM) components

Abstract

The Big Area Additive Manufacturing (BAAM) system can print structures on the order of several meters at high extrusion rates, thereby having the potential to significantly impact automotive, aerospace and energy sectors. The functional use of such parts, however, may be limited by mechanical anisotropy in which the strength of printed parts across successive layers in the build direction (z-direction) is significantly lower than the corresponding in-plane strength (x-y directions). This has been primarily attributed to poor bonding between printed layers as the lower layers cool below the glass transition temperature (Tg) before the next layer is deposited. Therefore, the potential of using infrared heating is considered for increasing the surface temperature of the printed layer just prior to deposition of new material to improve the interlayer strength of the components. This study found significant improvements in bond strength for the deposition of acrylonitrile butadiene styrene (ABS) reinforced with 20% chopped carbon fiber when the surface temperature of the substrate material was increased from below Tg to close to or above Tg using infrared heating.

Authors:
 [1];  [1];  [2];  [2];  [2];  [3];  [4]
  1. Univ. of Tennessee, Knoxville, TN (United States). Bredesen Center for Interdisciplinary Research and Graduate Education
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility; Purdue Univ., West Lafayette, IN (United States). Dept. of Aeronautics and Astronautics
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility; Univ. of Tennessee, Knoxville, TN (United States). Dept. Mechanical, Aerospace and Biomedical Engineering
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Advanced Manufacturing Office (EE-5A)
OSTI Identifier:
1334232
Alternate Identifier(s):
OSTI ID: 1366365
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Published Article
Journal Name:
Additive Manufacturing
Additional Journal Information:
Journal Volume: 14; Journal Issue: C; Journal ID: ISSN 2214-8604
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Additive manufacturing; large scale; interlayer strength; composites; infrared preheating

Citation Formats

Kishore, Vidya, Ajinjeru, Christine, Nycz, Andrzej, Post, Brian K., Lindahl, John M., Kunc, Vlastimil, and Duty, Chad E.. Infrared preheating to improve interlayer strength of big area additive manufacturing (BAAM) components. United States: N. p., 2017. Web. doi:10.1016/j.addma.2016.11.008.
Kishore, Vidya, Ajinjeru, Christine, Nycz, Andrzej, Post, Brian K., Lindahl, John M., Kunc, Vlastimil, & Duty, Chad E.. Infrared preheating to improve interlayer strength of big area additive manufacturing (BAAM) components. United States. doi:10.1016/j.addma.2016.11.008.
Kishore, Vidya, Ajinjeru, Christine, Nycz, Andrzej, Post, Brian K., Lindahl, John M., Kunc, Vlastimil, and Duty, Chad E.. Wed . "Infrared preheating to improve interlayer strength of big area additive manufacturing (BAAM) components". United States. doi:10.1016/j.addma.2016.11.008.
@article{osti_1334232,
title = {Infrared preheating to improve interlayer strength of big area additive manufacturing (BAAM) components},
author = {Kishore, Vidya and Ajinjeru, Christine and Nycz, Andrzej and Post, Brian K. and Lindahl, John M. and Kunc, Vlastimil and Duty, Chad E.},
abstractNote = {The Big Area Additive Manufacturing (BAAM) system can print structures on the order of several meters at high extrusion rates, thereby having the potential to significantly impact automotive, aerospace and energy sectors. The functional use of such parts, however, may be limited by mechanical anisotropy in which the strength of printed parts across successive layers in the build direction (z-direction) is significantly lower than the corresponding in-plane strength (x-y directions). This has been primarily attributed to poor bonding between printed layers as the lower layers cool below the glass transition temperature (Tg) before the next layer is deposited. Therefore, the potential of using infrared heating is considered for increasing the surface temperature of the printed layer just prior to deposition of new material to improve the interlayer strength of the components. This study found significant improvements in bond strength for the deposition of acrylonitrile butadiene styrene (ABS) reinforced with 20% chopped carbon fiber when the surface temperature of the substrate material was increased from below Tg to close to or above Tg using infrared heating.},
doi = {10.1016/j.addma.2016.11.008},
journal = {Additive Manufacturing},
number = C,
volume = 14,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.addma.2016.11.008

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