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digital imaging

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Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 664-675, May 24–28, 2021,
... and position measurements with respect to time. This approach is demonstrated and the results discussed. digital imaging in-flight particle analysis thermal spray coating Thermal Spray 2021: Proceedings from the International Thermal Spray Conference Copyright © 2021 ASM International® May 24 28...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 1001-1006, March 4–6, 2002,
.../asm.cp.itsc2002p1001 www.asminternational.org Digital diagnostic system based on advanced CCD image sensor for thermal spraying monitoring M. Ignatiev, V. Senchenko, V. Dozhdikov, Perpignan/F, I. Smurov and P. Bertrand, Saint-Etienne/F Digitales Diagnosesystem basierend auf fortschrittlichen CCD-Bildsensoren für die...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 79-83, May 8–11, 2000,
...-exposure, digital CCD camera system. Particle images are processed using digital image processing techniques in a PC computer. The number of particles per frame and the spatially resolved particle velocities are calculated from the images. Spectrally resolved image information is further used to determine...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 767-772, May 25–29, 1998,
... for industrial use. The measurement method has been tested with Plasmatechnik A3000S plasma spraying equipment using fused and crushed Al2O3 powder. Using digital image processing techniques relative particle concentrations and particle velocities have been calculated from the acquired images. These results have...
Proceedings Papers

ITSC1997, Thermal Spray 1997: Proceedings from the United Thermal Spray Conference, 577-582, September 15–18, 1997,
... parameters and electrode wear states. The coating process and in-flight particles were monitored using a fast non-intensified CCD-camera. Using digital image analysis the relative hot particle concentrations and velocity distributions were calculated from images. The possibility to use a CCD camera based...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 131-138, May 24–28, 2021,
... in the previous study [3], and the deformation at the upper and the lower specimens where a high deposition efficiency and no diamond surfaces was measured using digital image correlation (DIC) graphitization was observed. method using ncorr software [9] and Blackfly (5-megapixel monochrome camera FLIR systems...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 949-953, March 4–6, 2002,
... to this nature of deposit. 60 Implementing an optical microscope and a CCD cam- 40 era, digitized images of the deposit profiles were taken at several magnifications. 20 Tab. 1. Plasma spray processing parameters for 0 Al2O3-TiO2 (13% by weight) deposits. 1 2 3 45 6 7 8 Sample # Parameter Value Fig. 6...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 1361-1369, May 8–11, 2000,
... if the I 110 specimen is acceptable or not. The software reduces measurement time fi-om 10 to 5 minutes. ^ 100 DATA STORAGE 90 0 20 40 60 80 100 Specimen reference The created data base stores the digital images and the resuhs of the metallographic characterization as well as Figure 8 : Chart control...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 115-121, May 24–28, 2021,
... by the 5% strain. The surface was applied and the resulting material was designated as PM- strain was measured using digital image correlation (DIC) with FA (final diameter of 9 mm and length 160 mm). the help of the Ncorr software [8]. Specimens of dimension 32 × 4 × 3 mm3 were cut using electric Fracture...
Proceedings Papers

ITSC1996, Thermal Spray 1996: Proceedings from the National Thermal Spray Conference, 517-523, October 7–11, 1996,
... can be decoupled by carefully selecting operating parameters to generate data points that fall along a magnification and the digital images stored to disk. Pull staircase pattern. For example, the influence of particle out caused by polishing was identified under polarized velocity at an approximate...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 9-17, May 24–28, 2021,
...; (c) testing condition for thermal furnace oxidation. globular pores) estimated at about 8 % by digital image analysis (Fig. 4a). Due to diffusion processes during annealing The coating microstructures were examined by optical treatment, the previously clearly visible lamellae between the microscopy...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 830-837, March 4–6, 2002,
... tion of these measurements, corresponding to one Ra=0.05µm while the right one is Ra=2µm. The num- pixel of the digital image viewed on a computer moni- ber under each frame denotes the number of droplets tor, was 5µm. deposited on the substrate. On the smooth surface there was much less splashing...
Proceedings Papers

ITSC1996, Thermal Spray 1996: Proceedings from the National Thermal Spray Conference, 525-530, October 7–11, 1996,
... in the spray jet just before The coatings are analyzed for wear the substrate. The spray jet was monitored using a resistance, degree of melting, deposition efficiency, fast CCD camera. Digital image processing was hardness and porosity. The dependence of these employed to calculate the area covered...
Proceedings Papers

ITSC1996, Thermal Spray 1996: Proceedings from the National Thermal Spray Conference, 263-273, October 7–11, 1996,
... usingAMRAY 1830 Scanning Electron ApplePowerPC 8100 computervia a 4Pi digital interface. Microscope. The 1024 by 1024 pixel images were analyzed using the program Nll-I Image to obtain the projected area of each Table 2: Additional Technical Data on the Zirconia zirconia particle. These areas were converted...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 697-703, May 8–11, 2000,
... digital images were analyzed for each sample. Salt spray test: Specimens were tested in SUGA Salt Spray Testing Machine and exposed to salt spray for 500 hrs. The test was Results and Discussion according to JIS-Z-2371, The spray used 5% ± 1% (by mass) salt solution by compressing air under 98 kPa...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 717-722, May 25–29, 1998,
... the quantitative electron microscopy is usually used for qualitative comparison of structural parameters which can effectively characterize the porosity. With the digital image technique the porosity could be structural features of thermal spray coatings. quantitatively measured from cross sectional microstructure...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 543-549, May 8–11, 2000,
... for microhardness, porosity, relative residual stress levels, deposit efficiency and phase transformation. Vickers microhardness measurements (LECO M-400 Hardness Tester) were conducted using a 300 g load for 15 seconds. Ten readings were averaged for each trial. Porosity was determined by image analysis of digital...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1577-1582, May 25–29, 1998,
... of these samples. around this axis of symmetry. Polished cross sections of selected samples were studied The anisotropy in the Porod scattering is strongly using SEM. Five digital images acquired at 500X magnification amplified by the shape of the scatterers [15]. Even mildly oblate from a single cut of each...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 62-65, March 4–6, 2002,
... conditions. By comparing pictures continuously taken (flux). This could be either done actively by laser during the spray process with reference data scattering methods (LDA, PDPA, Mie-Scattering, etc.) corresponding to optimized operation conditions, this and high time resolved digital image processing...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 573-579, March 4–6, 2002,
... microstructure investiga- tions, micro hardness and porosities of the coatings varying with the torch movement were also per- formed. In Table 3 and 4 the results are listed. Poros- ity has been determined from digital image process- ing of the respective cross section micrographs. Mi- cro hardness...