Upload
sintas
View
44
Download
0
Embed Size (px)
Citation preview
PROGRESS UPDATE WORK PACKAGE 1LAURA CORDOVA GONZALEZ
AGENDA
1. INTRODUCTION
2. RESEARCH PLANNING
3. BSc. PROJECTS AT NLR - RESULTS
AGENDA
1. INTRODUCTION
2. RESEARCH PLANNING
3. BSc. PROJECTS AT NLR - RESULTS
4
INTRODUCTIONCONNECTION BETWEEN THE WORKING PACKAGES
WP1
WP3WP2
• Feasibility of part production on location
• Failure behavior & life prediction
• Update in development of technology
• Maintainability (& repair)
• Supply chain network design
• Facility location & shipping
• (Re)design stage impact
• Scoring method
• Part consolidation
• Resource pooling
[email protected] 13/12/2016
Bram Westerweel Nils Knofius
Laura Cordova
AGENDA
1. INTRODUCTION
2. RESEARCH PLANNING
3. BSc. PROJECTS AT NLR - RESULTS
6
RESEARCH METHODOLOGY
Base powders properties and influence on
material behavior
Technology, process
parameters and post-processing
Maintainability (& repairing)
[email protected] 13/12/2016
7
RESEARCH TOPIC I: PRODUCING ON LOCATIONMOISTURE INFLUENCE FOR AM METAL POWDERS
Characterization of metal powder for AM
• Moisture influence on mechanical performance (Layer deposition in SLM and powder flow)
• Rheological properties
• Chemical reaction (irreversible effect) – (XPS / LECO)
Influence of drying process and moisture on quality / properties
• Analysis of builds with as-received and dried powders
• Porosity / CT-Scanning
• Density
• Hardness
• Microstructure
[email protected] 13/12/2016
13/12/2016 8
RESEARCH TOPIC II & III: SELECTING THE CORRECT PATHPOTENTIAL OF AM IN PRODUCING METAL PARTS
II: Selection of suitable AM
techniques
Post processing
Materials selection
Maintenance
RepairingPrinting new parts
III: Study of post-processing
techniques to optimize the
life prediction and
preventive maintenance
Cases studies in industry of different type of parts to evaluate performance of
developed approach
13/12/2016 9
CASE STUDIESPARTNERS INVOLVEMENT
• What type of parts can be selected?
• Which are the important properties to fulfill the requirements?
• Is there the possibility of printing on location?
• What AM technique and post-processing?
• Can be printed in the same materials? And design?
• What is the result in terms of performance and economical benefits?
• Is there a quantifiable impact in the maintenance actions?
AGENDA
1. INTRODUCTION
2. RESEARCH PLANNING
3. BSc. PROJECTS AT NLR - RESULTS
11
BSc. PROJECTS I – STEFAN SMITMOTIVATION
I- Effect of layer thickness on Inconel 718 manufactured with SLM:
Influence of process parameters (layer thickness) when producing SLM parts
with optimized conditions
Measurement of properties such as: porosity level, microstructure and melt
pool size, hardness and density
13/12/2016
Sample preparation
12
BSc. PROJECTS I – STEFAN SMIT
Effect of layer thickness on Inconel 718 manufactured with SLM:
30μm 50μm
- Melt pool size
Microstructure Hardness
Microstructure with Kalling’s reagent no. 2
[email protected] 13/12/2016
13
BSc. PROJECTS I – STEFAN SMIT
Effect of layer thickness on Inconel 718 manufactured with SLM:
Density Porosity
[email protected] 13/12/2016
14
BSc. PROJECTS II – STEFAN SMITCONCLUSIONS
I- Effect of layer thickness on Inconel 718 manufactured with SLM:
Comparable density and porosity
Differences in microstructure -> hardness
Next steps -> study post-processing techniques
[email protected] 13/12/2016
15
BSc. PROJECTS II – NIELS VLUTTERTMOTIVATION
II- The absorption of moisture by metal powder in a humid
environment:
Impact of environmental conditions in the quality of metal powders for AM
Measurement of moisture content in three different alloys
Study of chemical composition of the most critical alloy in terms of reaction to
humidity
[email protected] 13/12/2016
Humidity 90%
Time in chamber 8 weeks
Time testing 45 min
Temperature 150C
16
BSc. PROJECTS II – NIELS VLUTTERT
The absorption of moisture by metal powder in a humid environment:
Mois
ture
conte
nt
Moisture analysis
0,186%
Material Starting w % moist. % n mois.
AlSi10Mg 5,7255 0,1869% 0,5099%
Ti6Al4V 9,6952 0,1031% 0,1662%
Inc718 15,6232 0,0499% 0,0499%
Inconel Titanium
Aluminum
[email protected] 13/12/2016
Mass (g)
Time (min)
17
BSc. PROJECTS II – NIELS VLUTTERT
The absorption of moisture by metal powder in a humid environment:
Composition analysis with XPS
[email protected] 13/12/2016
Oxygen
18
BSc. PROJECTS II – NIELS VLUTTERTCONCLUSIONS
II- The absorption of moisture by metal powder in a humid
environment:
Moisture content is difficult to measure in metal powder by thermo-
gravimetrical analysis (low accuracy)
Variability in particles chemical composition
Next steps -> analyze builds
[email protected] 13/12/2016
THANK YOU
19