US 11,986,845 B2
Method and apparatus for controlling cold spraying
Jussi Larjo, Tampere (FI)
Assigned to OSEIR OY, Tampere (FI)
Appl. No. 17/621,740
Filed by OSEIR OY, Tampere (FI)
PCT Filed Jun. 11, 2020, PCT No. PCT/FI2020/050409
§ 371(c)(1), (2) Date Dec. 22, 2021,
PCT Pub. No. WO2020/260755, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 20195558 (FI), filed on Jun. 24, 2019.
Prior Publication US 2022/0234066 A1, Jul. 28, 2022
Int. Cl. B05D 1/02 (2006.01); B05B 12/08 (2006.01); B05D 1/12 (2006.01); C23C 24/04 (2006.01); G01P 5/26 (2006.01); G06T 7/00 (2017.01); G06T 7/20 (2017.01); H04N 23/56 (2023.01)
CPC B05B 12/082 (2013.01) [B05D 1/025 (2013.01); B05D 1/12 (2013.01); C23C 24/04 (2013.01); G01P 5/26 (2013.01); G06T 7/0004 (2013.01); G06T 7/20 (2013.01); H04N 23/56 (2023.01); G06T 2207/10016 (2013.01); G06T 2207/10152 (2013.01); G06T 2207/30108 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for controlling gas dynamic cold spraying, the method comprising:
providing a particle jet by using an accelerating nozzle, according to a first set of operating parameters,
illuminating the particle jet with illuminating light pulses,
capturing one or more images of a measurement region of the particle jet by using an imaging unit, and
determining one or more velocities of particles of the particle jet by analyzing the captured one or more images,
wherein the method comprises providing two or more sequences of illuminating light pulses during an exposure time period of a single captured image, wherein the sequences are separated by a blanking time period, which is selected such that the slowest moving particle illuminated by a first sequence in the measuring region has sufficient time to move out of the measurement region before start of a second sequence.