Possibility of Out-of-plane and In-plane Deformation Measurement of Plate Buckling by Using High Resolution Speckle Interferometry

The characterisation of composite plates used in structural work in the field of aeronautics is approached by associating ultrasound and speckle interferometry measurements. The reduced thickness of the specimens does not allow for gauge instrumentation to measure out-of plane deformation. A system was therefore used which makes it possible to obtain the cartography of the deformations in and out of-plane. This paper describes an application of electronic speckle interferometry in the measurement of through thickness deformation in composites.

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Dynamic out-of-plane deformation measurement using virtual speckle patterns

Optics and Lasers in Engineering ◽

10.1016/j.optlaseng.2008.10.010 ◽

2009 ◽

Vol 47 (5) ◽

pp. 563-569 ◽

Cited By ~ 12

Author(s):

Yasuhiko Arai ◽

Ryouichi Shimamura ◽

Shunsuke Yokozeki

Keyword(s):

Plane Deformation ◽

Deformation Measurement ◽

Out Of Plane ◽

Speckle Patterns

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Extension of the upper measuring limit in out-of plane deformation measurement by combination of digital holography and desensitized electronic speckle pattern interferometry

Optical Engineering ◽

10.1117/1.3456696 ◽

2010 ◽

Vol 49 (6) ◽

pp. 065801 ◽

Cited By ~ 3

Author(s):

Richárd Séfel

Keyword(s):

Digital Holography ◽

Speckle Pattern ◽

Plane Deformation ◽

Deformation Measurement ◽

Electronic Speckle Pattern Interferometry ◽

Out Of Plane

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Pyrrole studies. VIII. The NH stretching frequencies of substituted pyrroles Acetyl and benzoyl substituents

Australian Journal of Chemistry ◽

10.1071/ch9660107 ◽

1966 ◽

Vol 19 (1) ◽

pp. 107 ◽

Cited By ~ 17

Author(s):

RW Guy ◽

RA Jones

Keyword(s):

Carbon Tetrachloride ◽

High Resolution ◽

Frequency Band ◽

Infrared Spectra ◽

Plane Deformation ◽

Acyl Substituent ◽

Out Of Plane ◽

Lower Frequency Band ◽

Hot Band ◽

Substituted Pyrroles

The infrared spectra of a number of acylpyrroles have been examined in the NH and CO stretching region under high resolution in carbon tetrachloride. Analysis of the data show-s that the effect of each group on the NH stretching frequency is independent of other substituents and additive. Pyrroles having the acyl substituent in the β-position show two concentration-independent bands. The lower frequency band arises from interaction with the out-of-plane deformation of the NH group, producing a hot band.

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