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optical holography

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Book Chapter

Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006474
EISBN: 978-1-62708-190-0
.... acoustical holography liquid-surface acoustical holography optical holography scanning acoustical holography sleeve-bearing stock through-transmission breast imaging system ACOUSTICAL HOLOGRAPHY is the extension of holography into the ultrasonic domain. The principles of acoustical holography are...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003240
EISBN: 978-1-62708-199-3
... Abstract Holography is basically a two-step process for creating a whole three dimensional image of a diffusely reflecting object having some arbitrary shape. This article discusses the advantages, disadvantages and applications of using the optical holography method in nondestructive...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003230
EISBN: 978-1-62708-199-3
... borescopes (rigid and flexible), optical sensors, and magnifying systems. The article discusses the special features of borescopes, the factors that influence the choice of a flexible or rigid borescope for use in a specific application, and some of the image sensors used in visual inspection. flexible...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
... comparison to the confocal Fabry-Perot approach, in which adaptation is performed by passive or linear optical components; the technique used also is known as real-time holography. This active wavefront adaptation eliminates the need for an external stabilization device against thermal drift or ambient...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
... addition, other NDE methods, such as eddy current, ultrasonic, optical holography, and speckle metrology, often find application in the field of metrology. Another interesting area of NDT is microstructural characterization, which can be done in situ without damaging the object by using replication...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006671
EISBN: 978-1-62708-213-6
... inspection, computed tomography, magnetic spin resonance imaging, neutron radiography, thermal inspection, optical holography, and acoustic holography. As already noted, flaws and cracks in ceramics represent locations where mechanical failure initiates and therefore dictate the mechanical properties...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... for microstructural examination. A small indication located at point “G” in Fig. 45 was one of the cut sections. A low-magnification optical micrograph from this area ( Fig. 46 ) shows a localized high volume fraction of silicon carbide. A higher-magnification scanning electron micrograph ( Fig. 47...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003239
EISBN: 978-1-62708-199-3
... then may be displayed. Infrared imaging equipment is available with a wide range of capabilities. The simplest systems are responsive to the near-infrared portion of the optical spectrum. These include night-vision devices and vidicon systems with silicon or lead sulfide sensors. Silicon sensors...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
...) Portable hardness tester Optical microscope and/or a borescope with low-to-moderate magnification Metallographic polishing and chemical etching kit Dye penetrant kit Magnetic-particle inspection kit Simple chemical tests for plating and alloy identification Visual inspection assisted...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006456
EISBN: 978-1-62708-190-0
... radiography and ultrasound, which are compared with XCT in Table 1 . Less common methods in industrial testing are nuclear tracer imaging, nuclear magnetic resonance imaging, and x-ray backscatter imaging. Acoustic emission, holography, and other techniques provide indirect or bulk information on the...