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Laser generated and...
Laser generated and recorded transient bending waves in composite tubes
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- Olofsson, Kenneth (author)
- Swedish Pulp and Paper Research Institute STF1, Stockholm, Sweden
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- Fällström, Karl-Evert (author)
- Luleå tekniska universitet
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- Palágyi, P. (author)
- Engineer, Technology Department of Structural Mechanics, Forsmarks Kraftgrupp AB, Östhamman, Sweden
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(creator_code:org_t)
- 1996
- 1996
- English.
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In: Experimental mechanics. - 0014-4851 .- 1741-2765. ; 36:3, s. 224-231
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Propagating bending waves are studied in three different composite tubes by holographic interferometry. A conical mirror is placed axially inside the tubes. Axial illumination and observation directions make it possible to view the circumference of the tube, with a high sensitivity to radial deformation. It is shown how the deformation field can be numerically evaluated using a phase stepping and unwrapping technique. Transient bending waves in the tubes are both generated and recorded by the same pulsed laser, which makes the experiments easy to perform. Finite element simulations of the impacted tubes are compared to corresponding experiments. Both the geometry and the material properties of the tubes affect the wave propagation. For unidirectional composite tubes, the 0-deg and 90-deg directions have different dynamic behavior. The proposed method could be used in nondestructive testing of tubes.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- Experimentell mekanik
- Experimental Mechanics
Publication and Content Type
- ref (subject category)
- art (subject category)
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