6533b85afe1ef96bd12b9f8d
RESEARCH PRODUCT
The effect of a circular hole on the tensile strength of neat and filled rigid PUR foams
Janis AndersonsUgis CabulisMikelis KirpluksLaura Stiebrasubject
Materials scienceTension (physics)Applied MathematicsMechanical EngineeringFracture mechanicsCondensed Matter PhysicsFinite fracture mechanicschemistry.chemical_compoundCircular holechemistryUltimate tensile strengthGeneral Materials ScienceComposite materialOpen holePolyurethaneStress concentrationdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-08-01 | Theoretical and Applied Fracture Mechanics |