Elevated region area measurement for quantitative analysis of laser beam melting process stability

J zur Jacobsmühlen, S Kleszczynski, G Witt, D Merhof - 2015 - repositories.lib.utexas.edu
… , large elevated areas at a single position x0 are critical for the process stability as they are hit
… Since we want to quantify the process stability we extract the elevated area Az(x) at every x …

Detection of elevated regions in surface images from laser beam melting processes

J zur Jacobsmühlen, S Kleszczynski… - IECON 2015-41st …, 2015 - ieeexplore.ieee.org
Elevated regions in produced layers pose a major risk to process stability as collisions between
… This requires a quantitative analysis of elevated region area and severeness, for which …

Experimental analysis of spatter generation and melt-pool behavior during the powder bed laser beam melting process

V Gunenthiram, P Peyre, M Schneider, M Dal… - Journal of Materials …, 2018 - Elsevier
… surface by a high velocity shielding gas … laser melting in powder-bed based ALM processes.
Moreover, the formation of residual porosity may be promoted by instability regimes at high

Error detection in laser beam melting systems by high resolution imaging

S Kleszczynski, J Zur Jacobsmühlen, JT Sehrt, G Witt - 2012 - repositories.lib.utexas.edu
… image using four point homography estimation and warping with bicubic … Laser Beam Melting
using the described high resolution imaging system. In a first building test, process stability

In-situ characterization and quantification of melt pool variation under constant input energy density in laser powder bed fusion additive manufacturing process

Q Guo, C Zhao, M Qu, L Xiong, LI Escano… - … Manufacturing, 2019 - Elsevier
quantitatively reveal melt pool evolution under constant IEDs during the LPBF additive
manufacturing process, by using the high… simultaneously increased, and the ratio remains stable

Quantitative multiscale correlative microstructure analysis of additive manufacturing of stainless steel 316L processed by selective laser melting

M Godec, S Zaefferer, B Podgornik, M Šinko… - Materials …, 2020 - Elsevier
… As the austenite structure has a high probability of stacking-fault generation due to the
low stacking-fault energy [33], the thermal stresses are compensated through the stable

In situ measurement of part geometries in layer images from laser beam melting processes

J zur Jacobsmühlen, J Achterhold… - … Additive Manufacturing, 2019 - Springer
… onto the build platform and melted by a laser according to the desired … stability and quality
management. We present an image analysis method, which segments part contours in high-…

[HTML][HTML] On the role of melt flow into the surface structure and porosity development during selective laser melting

C Qiu, C Panwisawas, M Ward, HC Basoalto… - Acta Materialia, 2015 - Elsevier
… fraction (A f ) quantified using ImageJ. The top surfaces of the as-… , the increased instability
of melt flow with increased laser … nickel-based superalloy fabricated by electron beam melting

Factor analysis of selective laser melting process parameters and geometrical characteristics of synthesized single tracks

I Yadroitsev, I Yadroitsava, P Bertrand… - Rapid Prototyping …, 2012 - emerald.com
… SLM process, high laser power (up to 400 W) and high scanning … compact laser of low power
with high quality laser radiation … Nevertheless, the formation of a stable molten zone when …

In situ quality control of the selective laser melting process using a high-speed, real-time melt pool monitoring system

S Clijsters, T Craeghs, S Buls, K Kempen… - The International Journal …, 2014 - Springer
… as a good indication for the melt pool stability and quality. … This section focuses on quality
assessment of the measured melt … This confidence interval is the basis for quality estimation (…