Fracture characterizations of V-notch tip in PMMA polymer material

In this paper, the fracture characterization of a V-notch tip in PMMA material is studied by means of an optical caustics method. The initial curve and caustic curve of the notch tip with different notch angles are simulated. Some typical stress concentration characterizations at the notch tip are a...

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Bibliographic Details
Published inPolymer testing Vol. 23; no. 5; pp. 509 - 515
Main Authors Xu, W, Yao, X.F, Xu, M.Q, Jin, G.C, Yeh, H.Y
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.08.2004
Elsevier
Subjects
Applied sciences
Exact sciences and technology
Fracture
Optical caustics
Physicochemistry of polymers
PMMA material
Polymer industry, paints, wood
Stress intensity factor
Technology of polymers
V-notch
Fracture
Stress intensity factor
Optical caustics
V-notch
PMMA material
Polymer
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Summary:In this paper, the fracture characterization of a V-notch tip in PMMA material is studied by means of an optical caustics method. The initial curve and caustic curve of the notch tip with different notch angles are simulated. Some typical stress concentration characterizations at the notch tip are analyzed. Fracture experiments of PMMA specimens with a V-notch subjected to three-point-bend loading are visualized using the optical pattern of caustics. The evolution of the stress intensity factor and the size of the caustic spot at the notch tip are analyzed. These results will be useful for the reliable design and strength evaluation of engineering structures with complex notch shapes.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0142-9418
1873-2348
DOI:10.1016/j.polymertesting.2003.12.004