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Mechanistic Effects of Porosity on S...

Siver, Andrew.

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Mechanistic Effects of Porosity on Structural Composite Materials.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Mechanistic Effects of Porosity on Structural Composite Materials./
Author:	Siver, Andrew.
Description:	310 p.
Notes:	Source: Masters Abstracts International, Volume: 52-05.
Contained By:	Masters Abstracts International52-05(E).
Subject:	Mechanical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1553303
ISBN:	9781303789595

Mechanistic Effects of Porosity on Structural Composite Materials.
Siver, Andrew.

Mechanistic Effects of Porosity on Structural Composite Materials. - 310 p.

Source: Masters Abstracts International, Volume: 52-05.

Thesis (M.S.)--University of California, Los Angeles, 2014.

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

As fiber reinforced composites continue to gain popularity as primary structures in aerospace, automotive, and powersports industries, quality control becomes an extremely important aspect of materials and mechanical engineering. The ability to recognize and control manufacturing induced defects can greatly reduce the likelihood of unexpected catastrophic failure. Porosity is the result of trapped volatiles or air bubbles during the layup process and can significantly compromise the strength of fiber reinforced composites. A comprehensive study was performed on an AS4C-UF3352 TCR carbon fiber-epoxy prepreg system to determine the effect of porosity on flexural, shear, low-velocity impact, and damage residual strength properties. Autoclave cure pressure was controlled to induce varying levels of porosity to construct six laminates with porosity concentrations between 0-40%. Porosity concentrations were measured using several destructive and nondestructive techniques including resin burnoff, sectioning and optical analysis, and X-ray computed tomography (CT) scanning. Ultrasonic transmission, thermography, and CT scanning provided nondestructive imaging to evaluate impact damage. A bilinear relationship accurately characterizes the change in mechanical properties with increasing porosity. Strength properties are relatively unaffected when porosity concentrations are below approximately 2.25% and decrease linearly by up to 40% in high porosity specimens.

ISBN: 9781303789595Subjects--Topical Terms:

649730
Mechanical engineering.

Mechanistic Effects of Porosity on Structural Composite Materials.
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020 $a 9781303789595
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100 1 $a Siver, Andrew. $3 3176176
245 1 0 $a Mechanistic Effects of Porosity on Structural Composite Materials.
300 $a 310 p.
500 $a Source: Masters Abstracts International, Volume: 52-05.
500 $a Adviser: Ajit K. Mal.
502 $a Thesis (M.S.)--University of California, Los Angeles, 2014.
506 $a This item must not be sold to any third party vendors.
520 $a As fiber reinforced composites continue to gain popularity as primary structures in aerospace, automotive, and powersports industries, quality control becomes an extremely important aspect of materials and mechanical engineering. The ability to recognize and control manufacturing induced defects can greatly reduce the likelihood of unexpected catastrophic failure. Porosity is the result of trapped volatiles or air bubbles during the layup process and can significantly compromise the strength of fiber reinforced composites. A comprehensive study was performed on an AS4C-UF3352 TCR carbon fiber-epoxy prepreg system to determine the effect of porosity on flexural, shear, low-velocity impact, and damage residual strength properties. Autoclave cure pressure was controlled to induce varying levels of porosity to construct six laminates with porosity concentrations between 0-40%. Porosity concentrations were measured using several destructive and nondestructive techniques including resin burnoff, sectioning and optical analysis, and X-ray computed tomography (CT) scanning. Ultrasonic transmission, thermography, and CT scanning provided nondestructive imaging to evaluate impact damage. A bilinear relationship accurately characterizes the change in mechanical properties with increasing porosity. Strength properties are relatively unaffected when porosity concentrations are below approximately 2.25% and decrease linearly by up to 40% in high porosity specimens.
590 $a School code: 0031.
650 4 $a Mechanical engineering. $3 649730
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Automotive engineering. $3 2181195
690 $a 0548
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710 2 $a University of California, Los Angeles. $b Mechanical Engineering. $3 2093961
773 0 $t Masters Abstracts International $g 52-05(E).
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791 $a M.S.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1553303