Additive Manufacturing with Ultrasound

Nigmetzyanov, R. I.; Sundukov, S. K.; Fatyukhin, D. S.; Grib, V. V.; Kartsov, S. K.

doi:10.3103/s1068798x17120140

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…There are a number of approaches for improving the consistency of quality of interlayer fusion in the FDM 3d-printing, including the following ones: the use of ultrasonic treatment [19][20][21][22][23][24] during and after deposition, temperature control of the deposited layers of the product during deposition [8,[25][26][27][28][29], annealing of polymer products, the use of mathematical modeling to adjust the printing parameters [30][31][32][33][34][35], and the use of statistical methods to determine the optimal deposition mode [36][37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Rapid Temperature Control in Melt Extrusion Additive Manufacturing Using Induction Heated Lightweight Nozzle

2022

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An approach for improving and maintaining consistent fusion quality of the deposited material during FDM 3d-printing is proposed. This approach is based on the nozzle temperature control during the printing process to adjust the polymer extrusion temperature with a speed and accuracy adequate to the FDM process. High frequency induction heating of the lightweight nozzle (<1 g) was used. To control the temperature of a lightweight nozzle, the resonant temperature measurement method based on the analysis of the high frequency eddy currents is proposed. To determine the parameters of the nozzle and the inductor as a plant, a FEM model of the inductive heating of the nozzle and a simulated model of a serial-parallel resonant circuit containing inductor were developed. Linearization of the automatic control system was performed to ensure the equal quality of regulation when operating in a wide temperature range. The quality of regulation, stability of the system, and coefficients of the PID controller were evaluated using a simulated model of the control system. A number of test samples were printed from various materials, and tensile stress testing was carried out. The developed control method reduces the nozzle temperature control error from 20 to 0.2 °C and decreases control delay by more than six times.

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