Lakshmi J Vendra

US Patent:

20230011144, Jan 12, 2023

Filed:

Mar 1, 2022

Appl. No.:

17/653017

Inventors:

- Houston TX, US
Thomas Dobrowolski - The Woodlands TX, US
Chad Yates - Houston TX, US
Jayesh Jain - The Woodlands TX, US
Mackenzie Dreese - Oklahoma City OK, US
Lakshmi Jyotshna Vendra - Spring TX, US

International Classification:

B29C 64/393
B29C 64/153
B22F 10/28
B22F 10/31
B22F 10/36
B22F 12/90
B33Y 10/00
B33Y 30/00
B33Y 50/02
B23K 26/70
B23K 26/03
B23K 26/06

Abstract:

A method of calibrating a laser of an additive manufacturing system involves processing a test pattern with the laser while varying one or more of laser power and/or scan speed. Thermal energy emitted from the resulting meltpool is measured while processing the test pattern. The power of the laser is calculated using a relationship between volumetric energy density and the thermal emissions, and the laser power is adjusted based on the calculated laser power. An additive manufacturing system for performing such a method may include a laser, a thermal sensor configured to measure meltpool thermal emissions, a processor configured to calculate a laser power based on the measured meltpool thermal emissions of the test pattern, and a controller configured to adjust the laser power based on the calculated laser power.