Range of applicability of the method of caustics around holes

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Title

Range of applicability of the method of caustics around holes (EN)

Creator

Badalouka, BG (EN)

Papadopoulos, GA (EN)

Type

journalArticle (EN)

Partial document
Publication in journal (EN)

Article
Scientific article (EN)

Issued

2014-03-01T01:25:03Z

2006 (EN)

Year

2006 (EN)

Description

The range of applicability of the optical method of caustics, which is based on plane stress conditions, around cylindrical holes in plane specimens is investigated. The position of the generatrix curve of the caustic and the conditions, which influence its size, are defined. The dimensions of the specimen, the ratio of the thickness to the diameter of the hole, the applied stress and the dimensions of the optical set-up influence the position of the generatrix curve of the caustic. At a critical distance from the boundary of the hole the state of stress degenerates from three-dimensional to plane stress. In this paper, the extent of this region was defined by finite element analysis, in case of uniaxial tension. The defined critical distance was correlated with the condition, which influence the caustic, thus the range of applicability of the method of caustic around hole was defined. The validity of this range was experimentally checked. © 2006 The Authors. Journal compilation 2006 Blackwell Publishing Ltd. (EN)

Scientific field

Materials Science, Characterization & Testing (EN)

Engineering and Technology ▶ Materials Engineering
Materials Science, Characterization and testing (EN)

Subject

Finite element method (EN)

Stresses (EN)

Generatrix curve (EN)

Stresses at holes (EN)

Three-dimensional effects (EN)

Cylindrical holes (EN)

Caustics (EN)

Optical devices (EN)