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Design, Fabrication, Evaluation, and Testing of Multilayered Wood-Based Composite Sandwich Panels.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Design, Fabrication, Evaluation, and Testing of Multilayered Wood-Based Composite Sandwich Panels./
Author:	Mohammadabadi, Mostafa.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	264 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-04, Section: B.
Contained By:	Dissertations Abstracts International82-04B.
Subject:	Civil engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27829679
ISBN:	9798678106063

Design, Fabrication, Evaluation, and Testing of Multilayered Wood-Based Composite Sandwich Panels.
Mohammadabadi, Mostafa.

Design, Fabrication, Evaluation, and Testing of Multilayered Wood-Based Composite Sandwich Panels. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 264 p.

Source: Dissertations Abstracts International, Volume: 82-04, Section: B.

Thesis (Ph.D.)--Washington State University, 2020.

This item is not available from ProQuest Dissertations & Theses.

To provide shelter as a basic need for growing world population (expected to reach 8.6 billion in 2030 and 9.8 billion in 2050), it is necessary to efficiently use natural resources to develop effective building products. This research develops a value-added product from small diameter timber as a promising and innovative building material with greater structural and energy performance than comparable building construction materials. Due to high stiffness/strength-to-weight ratio, sandwich structures are widely used in many areas. Those with hollow cores have attracted interest because the cavities can be used to improve the thermal and acoustic performance. In this study, a novel sandwich structure with 3-D core(s) was developed for constructing building envelopes. Using FE model and a mechanics-based approach, a parametric study was conducted to design a biaxial corrugated geometry to serve as a core for the sandwich structure. After verifying the design, a large mold was fabricated to produce biaxial corrugated panels which were then used to fabricate 1- and 2-layered corrugated core sandwich panels. These panels were evaluated for their bending, axial compression, and thermal conductivity properties. Analytical models using high-order sandwich panel theory for beam configuration and classical plate theory along with third order shear deformation plate theory for full size sandwich panels were developed to capture their bending behavior within the elastic region. Hashin damage model implemented in Abaqus finite element software was used to capture load-carrying capacity of the sandwich panels. Since wood and wood-based products are viscoelastic, creep tests were conducted to understand the time-dependent behavior of the sandwich structure.Experimental results showed significantly higher performance for 2-layered corrugated core sandwich panels than SIPs and stud-walls under bending and axial compression loads. Normalized R-value of the panels filled with closed-cell foam was twice that of typical wood composite panels. Predictions of the bending stiffness and the load carrying capacity of 1-layered corrugated core sandwich panels using analytical and damage models agreed very closely with the experimental results (a difference of less than 1%). Wood strand sandwich panels developed in this study provide an opportunity to prefabricate panels for construction of residential building envelopes.

ISBN: 9798678106063Subjects--Topical Terms:

860360
Civil engineering.
Subjects--Index Terms:

Analytical model

Design, Fabrication, Evaluation, and Testing of Multilayered Wood-Based Composite Sandwich Panels.
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245 1 0 $a Design, Fabrication, Evaluation, and Testing of Multilayered Wood-Based Composite Sandwich Panels.
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300 $a 264 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-04, Section: B.
500 $a Advisor: Yadama, Vikram.
502 $a Thesis (Ph.D.)--Washington State University, 2020.
506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
520 $a To provide shelter as a basic need for growing world population (expected to reach 8.6 billion in 2030 and 9.8 billion in 2050), it is necessary to efficiently use natural resources to develop effective building products. This research develops a value-added product from small diameter timber as a promising and innovative building material with greater structural and energy performance than comparable building construction materials. Due to high stiffness/strength-to-weight ratio, sandwich structures are widely used in many areas. Those with hollow cores have attracted interest because the cavities can be used to improve the thermal and acoustic performance. In this study, a novel sandwich structure with 3-D core(s) was developed for constructing building envelopes. Using FE model and a mechanics-based approach, a parametric study was conducted to design a biaxial corrugated geometry to serve as a core for the sandwich structure. After verifying the design, a large mold was fabricated to produce biaxial corrugated panels which were then used to fabricate 1- and 2-layered corrugated core sandwich panels. These panels were evaluated for their bending, axial compression, and thermal conductivity properties. Analytical models using high-order sandwich panel theory for beam configuration and classical plate theory along with third order shear deformation plate theory for full size sandwich panels were developed to capture their bending behavior within the elastic region. Hashin damage model implemented in Abaqus finite element software was used to capture load-carrying capacity of the sandwich panels. Since wood and wood-based products are viscoelastic, creep tests were conducted to understand the time-dependent behavior of the sandwich structure.Experimental results showed significantly higher performance for 2-layered corrugated core sandwich panels than SIPs and stud-walls under bending and axial compression loads. Normalized R-value of the panels filled with closed-cell foam was twice that of typical wood composite panels. Predictions of the bending stiffness and the load carrying capacity of 1-layered corrugated core sandwich panels using analytical and damage models agreed very closely with the experimental results (a difference of less than 1%). Wood strand sandwich panels developed in this study provide an opportunity to prefabricate panels for construction of residential building envelopes.
590 $a School code: 0251.
650 4 $a Civil engineering. $3 860360
650 4 $a Mechanical engineering. $3 649730
650 4 $a Design. $3 518875
650 4 $a Natural resource management. $3 589570
650 4 $a Materials science. $3 543314
650 4 $a Wood sciences. $3 3168288
653 $a Analytical model
653 $a Biaxial corrugated core
653 $a Building material
653 $a Experimental testing
653 $a Sandwich panel
653 $a Wood composite panels
690 $a 0543
690 $a 0548
690 $a 0389
690 $a 0794
690 $a 0746
690 $a 0528
710 2 $a Washington State University. $b Materials Science. $3 3282433
773 0 $t Dissertations Abstracts International $g 82-04B.
790 $a 0251
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27829679