Aluminum foam sandwich with density-graded open-cell core

Compressive and flexural response

Vasanth Chakravarthy Shunmugasamy, Bilal Mansoor

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We created a density-graded, open-cell, aluminum foam core sandwich (AFS) by joining, alternately arranged Al sheets and three different relative density (ρ* = 7%, 29%, and, 42%) foams using a zinc filler. A defect free, lamellar, α + η microstructure was observed in the foam/facesheet joint interface. Vickers microhardness and nanoindentation of the joint revealed higher hardness in the Zn filler compared to foam struts and sheets. The density-graded AFS showed a staggered compressive stress-strain response and its energy absorption increased by up to 607% compared to as-received (7% ρ*) foam core AFS. Three-point bend testing of the density-graded AFS showed indentation, foam strut bending, core shear and interface debonding as major failure mechanisms. Our results show that density-grading of foam core by introducing different relative density foam layers is a viable method to tailor the mechanical response of AFS.

Original languageEnglish
Pages (from-to)220-230
Number of pages11
JournalMaterials Science and Engineering A
Volume731
DOIs
Publication statusPublished - 25 Jul 2018

Fingerprint

Aluminum
foams
Foams
aluminum
cells
struts
Struts
fillers
Fillers
Debonding
energy absorption
Energy absorption
Nanoindentation
nanoindentation
indentation
Compressive stress
Indentation
Joining
Microhardness
microhardness

Keywords

  • Al foam sandwich
  • Density-graded
  • Open-cell foam core

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Aluminum foam sandwich with density-graded open-cell core : Compressive and flexural response. / Shunmugasamy, Vasanth Chakravarthy; Mansoor, Bilal.

In: Materials Science and Engineering A, Vol. 731, 25.07.2018, p. 220-230.

Research output: Contribution to journalArticle

@article{7ad4f505adb5486f9fc11d05d430a519,
title = "Aluminum foam sandwich with density-graded open-cell core: Compressive and flexural response",
abstract = "We created a density-graded, open-cell, aluminum foam core sandwich (AFS) by joining, alternately arranged Al sheets and three different relative density (ρ* = 7{\%}, 29{\%}, and, 42{\%}) foams using a zinc filler. A defect free, lamellar, α + η microstructure was observed in the foam/facesheet joint interface. Vickers microhardness and nanoindentation of the joint revealed higher hardness in the Zn filler compared to foam struts and sheets. The density-graded AFS showed a staggered compressive stress-strain response and its energy absorption increased by up to 607{\%} compared to as-received (7{\%} ρ*) foam core AFS. Three-point bend testing of the density-graded AFS showed indentation, foam strut bending, core shear and interface debonding as major failure mechanisms. Our results show that density-grading of foam core by introducing different relative density foam layers is a viable method to tailor the mechanical response of AFS.",
keywords = "Al foam sandwich, Density-graded, Open-cell foam core",
author = "Shunmugasamy, {Vasanth Chakravarthy} and Bilal Mansoor",
year = "2018",
month = "7",
day = "25",
doi = "10.1016/j.msea.2018.06.048",
language = "English",
volume = "731",
pages = "220--230",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Aluminum foam sandwich with density-graded open-cell core

T2 - Compressive and flexural response

AU - Shunmugasamy, Vasanth Chakravarthy

AU - Mansoor, Bilal

PY - 2018/7/25

Y1 - 2018/7/25

N2 - We created a density-graded, open-cell, aluminum foam core sandwich (AFS) by joining, alternately arranged Al sheets and three different relative density (ρ* = 7%, 29%, and, 42%) foams using a zinc filler. A defect free, lamellar, α + η microstructure was observed in the foam/facesheet joint interface. Vickers microhardness and nanoindentation of the joint revealed higher hardness in the Zn filler compared to foam struts and sheets. The density-graded AFS showed a staggered compressive stress-strain response and its energy absorption increased by up to 607% compared to as-received (7% ρ*) foam core AFS. Three-point bend testing of the density-graded AFS showed indentation, foam strut bending, core shear and interface debonding as major failure mechanisms. Our results show that density-grading of foam core by introducing different relative density foam layers is a viable method to tailor the mechanical response of AFS.

AB - We created a density-graded, open-cell, aluminum foam core sandwich (AFS) by joining, alternately arranged Al sheets and three different relative density (ρ* = 7%, 29%, and, 42%) foams using a zinc filler. A defect free, lamellar, α + η microstructure was observed in the foam/facesheet joint interface. Vickers microhardness and nanoindentation of the joint revealed higher hardness in the Zn filler compared to foam struts and sheets. The density-graded AFS showed a staggered compressive stress-strain response and its energy absorption increased by up to 607% compared to as-received (7% ρ*) foam core AFS. Three-point bend testing of the density-graded AFS showed indentation, foam strut bending, core shear and interface debonding as major failure mechanisms. Our results show that density-grading of foam core by introducing different relative density foam layers is a viable method to tailor the mechanical response of AFS.

KW - Al foam sandwich

KW - Density-graded

KW - Open-cell foam core

UR - http://www.scopus.com/inward/record.url?scp=85048830923&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048830923&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2018.06.048

DO - 10.1016/j.msea.2018.06.048

M3 - Article

VL - 731

SP - 220

EP - 230

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

ER -