Journal ArticleDOI
Application of Digital Holography for Nondestructive Testing and Metrology: A Review
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TLDR
The basics of holography, holographic interferometry, and DH are presented, and examples from such diverse fields as deformation analysis, form determination, refractive index measurement, and wave front reconstruction by shearographic differential interference contrast microscopy are given.Abstract:
Holography and holographic interferometry as a means for nondestructive testing, as well as metrologic tools in engineering, biology, and other fields, have significant momentum by the introduction of digital holography (DH) and further by the employment of numerical processing power, which became available due to the increase in speed and data capacity of modern computers. In this review paper, we present the basics of holography, holographic interferometry, and DH, and give examples from such diverse fields as deformation analysis, form determination, refractive index measurement, and wave front reconstruction by shearographic differential interference contrast microscopy.read more
Citations
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Journal ArticleDOI
Strategies for reducing speckle noise in digital holography
Vittorio Bianco,Pasquale Memmolo,Marco Leo,Silvio Montresor,Cosimo Distante,Melania Paturzo,Pascal Picart,Bahram Javidi,Pietro Ferraro +8 more
TL;DR: A broad discussion about the noise issue in DH is provided, with the aim of covering the best-performing noise reduction approaches that have been proposed so far and quantitative comparisons among these approaches will be presented.
Journal ArticleDOI
State-of-the-art active optical techniques for three-dimensional surface metrology: a review [Invited].
TL;DR: This paper reviews recent developments of non-contact three-dimensional (3D) surface metrology using an active structured optical probe and discusses principles of each technology, and its advantageous characteristics as well as limitations.
Journal ArticleDOI
Multimodal optical excitation pulsed thermography: Enhanced recognize debonding defects of the solid propellant rocket motor cladding layer
TL;DR: In this paper, the authors demonstrated the multimodal optical excitation pulsed thermography, and this technique can enhance the defect detectability and the depth-resolution dynamic range for the propellant /cladding layer interface debonding defects of the solid propellant rocket motor.
Journal ArticleDOI
Defect reconstruction by non-destructive testing with laser induced ultrasonic detection
TL;DR: A hybrid configuration where ultrasound is generated by impact of laser pulses, while the detection is done with conventional transducers is implemented for defect reconstruction in metallic elements and it is shown that it combines advantages of both photonic and ultrasonic devices, reducing the drawbacks of both methods.
Journal ArticleDOI
Multimodal optical excitation pulsed thermography: Enhanced recognize debonding defects of the solid propellant rocket motor cladding layer
TL;DR: In this paper , a three-dimensional (3D) thermal-wave model which stimulated by a pulse excitation thermal source was built and multiple feature extraction algorithms were proposed and applied to extract characteristic images.
References
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Journal ArticleDOI
Microscopy by reconstructed wave-fronts
TL;DR: In this paper, it is shown that a coherent monochromatic wave can be used to reconstruct the original image of an object from its mirror image with respect to the coherent background.
Journal ArticleDOI
Digital Image Formation From Electronically Detected Holograms
Joseph W. Goodman,R. W. Lawrence +1 more
TL;DR: In high precision holographic imagery of weak objects of small angular subtense, electronic detection and digital image formation have distinct advantages as mentioned in this paper, and experiments with a vidicon detector and a PDP-6 computer have yielded reconstructed images of good quality with computation times of five minutes.
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Direct phase determination in hologram interferometry with use of digitally recorded holograms
TL;DR: In this paper, the phase determination in hologram interferometry is performed using a CCD target and phase estimation from the digitally sampled holograms, which are then used to calculate the phase of the interference phase.
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Applications of Holography in Fluid Mechanics and Particle Dynamics
Joseph Katz,Jian Sheng +1 more
TL;DR: In this article, a review summarizes recent advances in volumetric particle detection and 3D flow velocimetry involving holography and discusses the debilitating depth-of-focus problem, along with methods that have been implemented to circumvent it.