The effect of a circular hole on the tensile strength of neat and filled rigid PUR foams

J. Andersons; M. Kirpluks; L. Stiebra; U. Cabulis

doi:10.1016/j.tafmec.2015.05.001

The effect of a circular hole on the tensile strength of neat and filled rigid PUR foams

J. Andersons^*
, M. Kirpluks
, L. Stiebra
, U. Cabulis

^*Corresponding author for this work

Institute for Mechanics of Materials

Latvian State Institute of Wood Chemistry

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

In order to elucidate the effect of stress concentration on the tensile strength of rigid polyurethane (PUR) foams, specimens with open circular holes and different ratios of hole diameter to specimen width were tested in tension. The reduction in the net-section strength of the specimens with a center hole ranged from 1% to 18% for neat foams and from 18% to 28% for foams produced from a nanoclay-filled PUR. The finite fracture mechanics approach, based on simultaneous application of the strength and fracture mechanics criteria of failure, yielded a reasonably accurate prediction of foam strength in the presence of stress concentration.

Original language	English
Pages (from-to)	8-14
Number of pages	7
Journal	Theoretical and Applied Fracture Mechanics
Volume	78
DOIs	https://doi.org/10.1016/j.tafmec.2015.05.001
Publication status	Published - 1 Aug 2015

OECD Field of Science

1.3 Physical Sciences

Keywords

Finite fracture mechanics
Open hole
PUR foams
Stress concentration
Tensile strength

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10.1016/j.tafmec.2015.05.001

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title = "The effect of a circular hole on the tensile strength of neat and filled rigid PUR foams",

abstract = "In order to elucidate the effect of stress concentration on the tensile strength of rigid polyurethane (PUR) foams, specimens with open circular holes and different ratios of hole diameter to specimen width were tested in tension. The reduction in the net-section strength of the specimens with a center hole ranged from 1\% to 18\% for neat foams and from 18\% to 28\% for foams produced from a nanoclay-filled PUR. The finite fracture mechanics approach, based on simultaneous application of the strength and fracture mechanics criteria of failure, yielded a reasonably accurate prediction of foam strength in the presence of stress concentration.",

keywords = "Finite fracture mechanics, Open hole, PUR foams, Stress concentration, Tensile strength",

author = "J. Andersons and M. Kirpluks and L. Stiebra and U. Cabulis",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

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T1 - The effect of a circular hole on the tensile strength of neat and filled rigid PUR foams

AU - Andersons, J.

AU - Kirpluks, M.

AU - Stiebra, L.

AU - Cabulis, U.

PY - 2015/8/1

Y1 - 2015/8/1

N2 - In order to elucidate the effect of stress concentration on the tensile strength of rigid polyurethane (PUR) foams, specimens with open circular holes and different ratios of hole diameter to specimen width were tested in tension. The reduction in the net-section strength of the specimens with a center hole ranged from 1% to 18% for neat foams and from 18% to 28% for foams produced from a nanoclay-filled PUR. The finite fracture mechanics approach, based on simultaneous application of the strength and fracture mechanics criteria of failure, yielded a reasonably accurate prediction of foam strength in the presence of stress concentration.

AB - In order to elucidate the effect of stress concentration on the tensile strength of rigid polyurethane (PUR) foams, specimens with open circular holes and different ratios of hole diameter to specimen width were tested in tension. The reduction in the net-section strength of the specimens with a center hole ranged from 1% to 18% for neat foams and from 18% to 28% for foams produced from a nanoclay-filled PUR. The finite fracture mechanics approach, based on simultaneous application of the strength and fracture mechanics criteria of failure, yielded a reasonably accurate prediction of foam strength in the presence of stress concentration.

KW - Finite fracture mechanics

KW - Open hole

KW - PUR foams

KW - Stress concentration

KW - Tensile strength

UR - https://www.scopus.com/pages/publications/84938286050

U2 - 10.1016/j.tafmec.2015.05.001

DO - 10.1016/j.tafmec.2015.05.001

M3 - Article

AN - SCOPUS:84938286050

SN - 0167-8442

VL - 78

SP - 8

EP - 14

JO - Theoretical and Applied Fracture Mechanics

JF - Theoretical and Applied Fracture Mechanics

ER -

The effect of a circular hole on the tensile strength of neat and filled rigid PUR foams

Abstract

OECD Field of Science

Keywords

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