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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
... ). However, this method assumes that the average displacement in the position of microstructural features is random; therefore, this technique must be applied carefully, because any morphological texture in the sample (such as columnar grains aligned in a direction that is not normal to the sectioning plane...
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
..., which is known to influence the final density of an additively manufactured component and is thought to contribute to powder feeding in directed-energy deposition and powder-bed fusion ( Ref 5 – 8 ). The following sections detail the primary methods for particle sizing used in additive manufacturing...