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direct-imaging methods

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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006452
EISBN: 978-1-62708-190-0
... applications. It discusses the mathematics behind classical beamforming, full matrix capture, and total focusing methods of imaging. The article shows how ultrasonic array data can be simulated by direct numerical methods (most commonly using finite-element methods), analytical methods, or hybrid methods...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003760
EISBN: 978-1-62708-177-1
.... The article also discusses the techniques for reconstruction and visualization of 3D microstructures with advanced computer software and hardware. 3D images atom probe tomography computer hardware computer software data reconstruction data visualization direct-imaging methods focused ion beam...
Image
Published: 01 November 2010
Fig. 14 In situ and real-time observation of the solidification microstructure in three-dimensional samples. Optical methods on transparent model systems. (a, b) [001]-dendrites viewed from above during directional solidification of dilute succinonitrile-camphor alloys in the Device More
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006564
EISBN: 978-1-62708-290-7
...-of-fusion porosity in PBF parts can be 10 to 50 μm in size with irregular boundaries. Direct detection of these flaws is very challenging and requires a high-resolution camera, carefully designed lighting, and powerful image-analysis methods. Camera Selection and Location Depending on the goal...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005504
EISBN: 978-1-62708-197-9
.... Serial sectioning techniques used to accomplish this task involve removing material from a bulk sample layer by layer, imaging each layer, and then reconstructing the resultant series of images using computer programs. Such methods include mechanical polishing, electrolytic dissolution, or focused ion...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006567
EISBN: 978-1-62708-290-7
... Abstract This article provides an overview of the general methods of metal powder production. It details the primary methods for particle sizing used in additive manufacturing: sieving, laser diffraction and scattering, and digital image analysis. Methods of interpreting and understanding...
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
... be classified as contact thermographic methods using cholesteric liquid crystals, thermally quenched phosphors, and heat-sensitive paints, and noncontact techniques using hand-held infrared scanners, high-resolution infrared imaging systems, and thermal wave interferometer systems. Contact thermometric...