Niels Skat Tiedje

Niels Skat Tiedje

Associate Professor

DTU MECHANICAL ENGINEERING
Department of Mechanical Engineering

Section of Manufacturing Engineering

Technical University of Denmark

Produktionstorvet

Building 425, room 223

2800 Kgs. Lyngby

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2018
 

Geometric form of gating system elements and its influence on the initial filling phase

Dojka, R. ; Jezierski, Jan ; Tiedje, N. S.
part of: 73rd World Foundry Congress (WFC 2018) Creative Foundry, pages: 345-346, 2019, World Foundry Organization
Presented at:
73rd World Foundry Congress (WFC 2018)

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2018

  PDF

Revisiting models for spheroidal graphite growth

Bjerre, Mathias K. ; Azeem, Mohammed ; Lee, Peter D. ; Hattel, Jesper H. ; Tiedje, Niels S.
in: Materials Science Forum, vol: 925, pages: 118-124
Presented at:
11th International Symposium on the Science and Processing of Cast Iron

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.4028/www.scientific.net/MSF.925.118

 

Use of high intensity X-ray analysis as tool to create new, fundamental models for phase transformations and residual stress in ductile cast iron

Tiedje, N. S. ; Bjerre, M. K. ; Andriollo, T. ; Azeem, M. ; Zhang, Y. ; Fæster, S. ; Lee, P. D. ; Hattel, J. H.
part of: 73rd World Foundry Congress (WFC 2018) Creative Foundry, pages: 239-240 , 2019, World Foundry Organization
Presented at:
73rd World Foundry Congress (WFC 2018)

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2018

2016
 

A contribution to the understanding of the combined effect of nitrogen and boron in grey cast iron

Strande, Knud ; Tiedje, Niels Skat ; Chen, Ming
part of: 72nd World Foundry Congress (WFC 2016): Proceedings of a meeting held 21-25 May 2016, Nagoya, Japan. , pages: 127-128, 2017, World Foundry Organization
Presented at:
72nd World Foundry Congress (WFC 2016)

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2016

 

Bonding mechanisms in spot welded three layer combinations

Moghadam, Marcel ; Tiedje, Niels Skat ; Seyyedian Choobi, Mahsa ; Nielsen, Chris Valentin ; Pantleon, Karen ; Bay, Niels Oluf
part of: Proceedings of 9th International Seminar & Conference on Advances in Resistance Welding , 2016
Presented at:
9th International Seminar & Conference on Advances in Resistance Welding

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2016

 

Step-height measurements on sand surfaces: A comparison between optical scanner and coordinate measuring machine

Mohaghegh, Kamran ; Yazdanbakhsh, Seyed Alireza ; Tiedje, Niels Skat ; De Chiffre, Leonardo
part of: Proceedings of euspen’s 16th International Conference & Exhibition,, 2016
Presented at:
euspen’s 16th International Conference & Exhibition

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2016

 

Traceability of optical length measurements on sand surfaces

Mohaghegh, Kamran ; Yazdanbakhsh, Seyed Alireza ; Tiedje, Niels Skat ; De Chiffre, Leonardo
part of: Proceedings of euspen’s 16th International Conference & Exhibition, 2016
Presented at:
euspen’s 16th International Conference & Exhibition

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2016

2015
  PDF

Modeling of damage in ductile cast iron – The effect of including plasticity in the graphite noduless

Andriollo, Tito ; Thorborg, Jesper ; Tiedje, Niels Skat ; Hattel, Jesper Henri
in: I O P Conference Series: Materials Science and Engineering, vol: 84
Presented at:
14th International Conference on Modelling of Casting, Welding and Advanced Solidification Processes

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: https://doi.org/10.1088/1757-899X/84/1/012027

  PDF

Modelling the solidification of ductile cast iron parts with varying wall thicknesses

Bjerre, Mathias Karsten ; Tiedje, Niels Skat ; Thorborg, Jesper ; Hattel, Jesper Henri
in: I O P Conference Series: Materials Science and Engineering, vol: 84
Presented at:
14th International Conference on Modelling of Casting, Welding and Advanced Solidification Processes

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: https://doi.org/10.1088/1757-899X/84/1/012038

2014
 

A TEM Study on the Ti-Alloyed Grey Iron

Moumeni, Elham ; Tiedje, Niels Skat ; Grumsen, Flemming Bjerg ; Danielsen, Hilmar Kjartansson ; Horsewell, Andy ; Hattel, Jesper Henri
part of: TMS2014 Annual Meeting Supplemental Proceedings, pages: 943-950, 2014, Minerals, Metals & Materials Society
Presented at:
TMS 2014 143rd Annual Meeting and ExhibitionAnnual Meeting & ExhibitionAnnual Meeting & Exhibition20

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2014     |    DOI: https://doi.org/10.1002/9781118889879.ch111

 

Effect of Feeder Configuration on the Microstructure of Ductile Cast Iron

Vedel-Smith, Nikolaj Kjelgaard ; Tiedje, Niels Skat
part of: Shape Casting: 5th International Symposium 2014, pages: 113-120, 2014, Wiley
Presented at:
Shape casting : 5th International Symposium 2014

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2014     |    DOI: https://doi.org/10.1002/9781118888100.ch14

 

Feeding Against Gravity with Spot Feeders in High Silicon Ductile Iron

Vedel-Smith, Nikolaj Kjelgaard ; Tiedje, Niels Skat
part of: Proceedings of 10th International Symposium on the Science and Processing of Cast Iron - SPCI10, 2014, INTEMA
Presented at:
10th International Symposium on the Science and Processing of Cast Iron

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2014

2013
 

Modelling Eutectic Growth in Unmodified and Modified Near-Eutectic Al-Si Alloy

Tiedje, Niels Skat ; Hattel, Jesper Henri ; Taylor, John A. ; Easton, Mark A.
in: Materials Science Forum, vol: 765, pages: 160-164
Presented at:
6th International Light Metals Technology Conference

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2013     |    DOI: https://doi.org/10.4028/www.scientific.net/MSF.765.160

 

Quantification of Feeding Effects of Spot Feeding Ductile Iron Castings made in Vertically Parted Moulds

Vedel-Smith, Nikolaj Kjelgaard ; Tiedje, Niels Skat ; Sällström, J. ; Maza, K.T.
Presented at:
CastExpo and 117th Metalcasting Congress 2013

Type: Paper

Status: Published     |    Year: 2013

 

Surface roughness characterization of cast components using 3D optical methods.

Nwaogu, Ugochukwu Chibuzoh ; Tiedje, Niels Skat ; Hansen, Hans Nørgaard
Presented at:
CastExpo and 117th Metalcasting Congress 2013

Type: Paper

Status: Published     |    Year: 2013

2012
 

Analysis of nucleation modelling in ductile cast iron

Moumeni, Elham ; Tutum, Cem Celal ; Tiedje, Niels Skat ; Hattel, Jesper Henri
part of: 13rd International conference on advances in solidification process, 2011
Presented at:
ICASP3

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2012     |    DOI: https://doi.org/10.1088/1757-899X/27/1/012062

 

A solidification model for unmodified, Na-modified and Sr-modified Al-Si alloys

Tiedje, Niels Skat ; Hattel, Jesper Henri ; Taylor, J. A. ; Easton, M. A.
part of: The 3rd International Conference on Advances in Solidification Processes, Rolduc Abbey 2011, pages: 012033, 2012, IOP Publishing
Presented at:
ICASP-3

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2012     |    DOI: https://doi.org/10.1088/1757-899X/27/1/012033

2010
 

Influence of New Sol-gel Refractory Coating on the Casting Properties of Cold Box and Furan Cores for Grey Cast iron.

Nwaogu, Ugochukwu Chibuzoh ; Poulsen, T. (Invited author) ; Bischoff, C (Invited author) ; Tiedje, Niels Skat
part of: WFC2010, 2010
Presented at:
69. World Foundry Congress

Type: Article in proceedings (Peer reviewed)     |     Invited contribution

Status: Published     |    Year: 2010

2009
 

Characterization of Coated Sand Cores from Two Different Binder Systems for Grey Iron Castings

Nwaogu, Ugochukwu Chibuzoh ; Tiedje, Niels Skat ; Poulsen, Thomas ; Bischoff, Claus
Presented at:
European Congress on Advanced Materials and Processes 2009

Type: Poster

Status: Published     |    Year: 2009

 

Influence of rare earths on shrinkage porosity in thin walled ductile cast iron

Pedersen, Karl Martin ; Tiedje, Niels Skat
in: International Journal of Cast Metals Research, vol: 22, issue: 1-4, pages: 302-305
Presented at:
International Conference on Advances in Solidification Process

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2009     |    DOI: https://doi.org/10.1179/136404609X367830

 

Solidification paths in modified Inconel 625 weld overlay material

Chandrasekaran, Karthik ; Tiedje, Niels Skat ; Hald, John
in: International Journal of Cast Metals Research, vol: 22, issue: 1-4, pages: 306-310
Presented at:
2nd International Conference on Advances in Solidification Processes

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2009     |    DOI: https://doi.org/10.1179/136404609X368046

2008
 

Experimental analysis of flow of ductile cast iron in stream lined gating systems

Skov-Hansen, Søren ; Green, Nick ; Tiedje, Niels Skat
in: Giessereiforschung, vol: 60, issue: 4, pages: number 03
Presented at:
68th World Foundry Congress

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2008

 

Experimental analysis of flow of ductile cast iron in stream lined gating systems

Skov-Hansen, Søren Peter ; Green, Nick R. ; Tiedje, Niels Skat
part of: World Foundry Congress, pages: 173-176, 2008
Presented at:
68th World Foundry Congress

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2008

 

Influence of rare earths on shrinkage porosities in thin walled ductile cast iron

Pedersen, Karl Martin ; Tiedje, Niels Skat
part of: 2. International conference on advances in solidification processes, 2008
Presented at:
2nd International Conference on Advances in Solidification Processes

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2008

 

Reduced energy consumption by using streamlined gating systems

Skov-Hansen, Søren ; Tiedje, Niels Skat
part of: The 8th China Foundry Association Congress, 2008
Presented at:
China Foundry Association Congress

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2008

 

Resource savings by optimising process conditions in foundries

Tiedje, Niels Skat ; Drivsholm, Christian ; Skov-Hansen, Søren Peter ; Crepaz, Rudolf
part of: World Foundry Congress, pages: 251-254, 2008
Presented at:
68th World Foundry Congress

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2008

 

Undercooling, nodule count and carbides in thin walled ductile cast iron

Pedersen, Karl Martin ; Tiedje, Niels Skat
part of: Proceedings of the 68th World Foundry Congress, pages: 167-171, 2008, World Foundry Organization
Presented at:
68th World Foundry Congress

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2008

2007
 

Undercooling and nodule count in thin walled ductile iron castings

Pedersen, Karl Martin ; Tiedje, Niels Skat
part of: Solidification Processing 2007, pages: 456-461, 2007, Department of Engineering Materials, University of Sheffield, Great Britain
Presented at:
5th decennial international conference on solidification processing

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2007

2006
 

Numerical modelling of solidification of thin walled hypereutectic ductile cast iron

Pedersen, Karl Martin ; Hattel, Jesper ; Tiedje, Niels
part of: Modeling of Casting, Welding and Advanced Solidification Processes XI, 2006
Presented at:
11th International Concerence on Modeling of Casting, Welding and Advanced Solidification Processes XI

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2006

  PDF

Solidification of Hypereutectic Thin Wall Ductile Cast Iron

Pedersen, Karl Martin ; Tiedje, Niels Skat
part of: Solidification and Gravity IV Material Science Forum, pages: 63-68, 2006, Trans Tech Publications Ltd, Zurich-uetikon
Presented at:
Fourth international conference on solidification and gravity

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2006

 

Stream-lined Gating Systems with Improved Yield - Dimensioning and Experimental Validation

Tiedje, Niels Skat ; Skov-Hansen, Søren Peter
Presented at:
World Foundry Congress

Type: Poster (Peer reviewed)

Status: Published     |    Year: 2006

2005
 

Investigation of solidification of thin walled ductile cast iron using temperature measurement

Pedersen, Karl Martin ; Tiedje, Niels
part of: Størkning og støbning, 2005, Dansk Metallurgisk Selskab
Presented at:
Dansk Metallurgisk Selskab

Type: Article in proceedings

Status: Published     |    Year: 2005

  PDF

Nucleation and solidification of thin walled ductile iron - Experiments and numerical simulation

Pedersen, Karl Martin ; Tiedje, Niels Skat
in: Materials Science and Engineering: A - Structural Materials: Properties, Microstructure and Processing, vol: 413-414, pages: 358-362
Presented at:
International Conference on Advances in Solidification Processes

Type: Conference article (Peer reviewed)

Status: Published     |    Year: 2005     |    DOI: https://doi.org/10.1016/j.msea.2005.08.158

 

Understanding local limited performance of nickel based weld clad material in terms of segregation effects

Højerslev, Christian ; Tiedje, Niels Skat ; Hald, John
part of: Dansk Metallurgisk Selskabs Vintermøde, 2005
Presented at:
Dansk Metallurgisk Selskabs vintermøde 2005

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published     |    Year: 2005

2004
 

Fundamental Metallurgy of Solidification

Tiedje, Niels
part of: Dansk Metallurgisk Selskab, Vintermøde, 2004, Dansk Metallurgisk Selskab
Presented at:
Dansk Metallurgisk Selskab Vintermøde 2004

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2004

 

Iron melt flow in thin-walled sections using vertically parted moulds

Larsen, Per ; Tiedje, Niels
part of: World Foundry Congress, 2004
Presented at:
66.th World Foundry Congress

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2004

 

Segregation behaviour and phase developments during solidification of Inconel 625; effect of iron and carbon

Højerslev, Christian ; Tiedje, Niels ; Hald, John
part of: 4'th. International Conference on Solidification and Gravity, 2004, Trans Tech Publications
Presented at:
4'th. International Conference on Solidification and Gravity

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2004

 

Segregation Effects and Phase Developments during Solidification of Alloy 625 - Effect of iron and Carbon

Højerslev, Christian ; Tiedje, Niels ; Hald, John
part of: 4th int. Conference on Solidification and Gravity, 2004
Presented at:
4th int. Conference on Solidification and Gravity

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published     |    Year: 2004

2003
 

Microstructure of Magnesium alloy AZ91-HP cast in permanent and non-permanent moulds

Tiedje, Niels ; Sørensen, Rasmus Kirkegaard ; Albachari, Sami
part of: Creating a Sustainable Competitive Edge for Magnesium, 2003, Normac, Herning
Presented at:
Normac's 2'nd international magnesium Conference & Exhibition

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2003

 

Støbte materialer, nu og i fremtiden

Tiedje, Niels
part of: Metalliske Konstruktionsmaterialer, 2003, Dansk Metallurgisk Selskab
Presented at:
Dansk Metallurgisk Selskabs Vintermøde 2003

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2003