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Modeling Fiber Damage during Processing of Long Fiber-Reinforced Thermoplastic Composites.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Modeling Fiber Damage during Processing of Long Fiber-Reinforced Thermoplastic Composites./
Author:	Bechara, Abrahan, Senior.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	112 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-11, Section: B.
Contained By:	Dissertations Abstracts International82-11B.
Subject:	Mechanical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28497075
ISBN:	9798738621154

Modeling Fiber Damage during Processing of Long Fiber-Reinforced Thermoplastic Composites.
Bechara, Abrahan, Senior.

Modeling Fiber Damage during Processing of Long Fiber-Reinforced Thermoplastic Composites. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 112 p.

Source: Dissertations Abstracts International, Volume: 82-11, Section: B.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2021.

This item must not be sold to any third party vendors.

When processing long fiber-reinforced thermoplastics, the length of the fibers decreases inevitably, which ultimately affects the mechanical performance of the finished part. Since few modeling techniques can accurately predict fiber damage during injection molding, a new approach for modeling this phenomenon is presented. First, fiber failure is characterized, and the material's strength distribution is quantified. Then, multiple controlled studies are performed to determine correlations between processing conditions, material properties, and fiber length reduction. As approximately 50% of the total damage occurs during melting, the kinetics of fiber damage in conjunction with dispersion are explored. Based on the findings, fiber failure is modeled using solid mechanics in combination with an approximation of Stokes' Law. Fiber-fiber interactions are accounted for and correlated with the fiber volume fraction via fitting of experimental data. The finished model is implemented as a post processing tool for injection molding simulations using COMSOL Multiphysics.

ISBN: 9798738621154Subjects--Topical Terms:

649730
Mechanical engineering.
Subjects--Index Terms:

Breakage

Modeling Fiber Damage during Processing of Long Fiber-Reinforced Thermoplastic Composites.
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020 $a 9798738621154
035 $a (MiAaPQ)AAI28497075
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100 1 $a Bechara, Abrahan, Senior. $3 3681689
245 1 0 $a Modeling Fiber Damage during Processing of Long Fiber-Reinforced Thermoplastic Composites.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 112 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-11, Section: B.
500 $a Advisor: Osswald, Tim A.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a When processing long fiber-reinforced thermoplastics, the length of the fibers decreases inevitably, which ultimately affects the mechanical performance of the finished part. Since few modeling techniques can accurately predict fiber damage during injection molding, a new approach for modeling this phenomenon is presented. First, fiber failure is characterized, and the material's strength distribution is quantified. Then, multiple controlled studies are performed to determine correlations between processing conditions, material properties, and fiber length reduction. As approximately 50% of the total damage occurs during melting, the kinetics of fiber damage in conjunction with dispersion are explored. Based on the findings, fiber failure is modeled using solid mechanics in combination with an approximation of Stokes' Law. Fiber-fiber interactions are accounted for and correlated with the fiber volume fraction via fitting of experimental data. The finished model is implemented as a post processing tool for injection molding simulations using COMSOL Multiphysics.
590 $a School code: 0262.
650 4 $a Mechanical engineering. $3 649730
650 4 $a Plastics. $3 649803
650 4 $a Materials science. $3 543314
653 $a Breakage
653 $a Thermoplastic composites
653 $a Injection molding
653 $a Fiber damage
690 $a 0548
690 $a 0795
690 $a 0794
710 2 $a The University of Wisconsin - Madison. $b Mechanical Engineering. $3 2094221
773 0 $t Dissertations Abstracts International $g 82-11B.
790 $a 0262
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28497075