Kristina Wärmefjord

Docent at Chalmers, Industrial and Materials Science, Product Development

Kristina Wärmefjord took her PhD 2011 and works within the research group of “Geometry Assurance & Robust Design”. Her main research focus is on variation simulation for non-rigid parts and methods to decrease the gap between simulated values and the real outcomes, i.e. increase the accuracy of non-rigid variation simulations. With an increased accuracy, quality can be improved, simulations can replace physical prototypes and costs can be reduced.The work is done in close collaboration with a number of companies, mostly in automotive and aerospace industry.Kristina is the assistant director of Wingquist Laboratory VINN Excellence Center and project leader for the projects “Smart Assembly” and “Virtual Robust Design and Simulation Methods”.

Source: chalmers.se

Projects

2013–2016

Proactive assembly ergonomical and geometrical quality assurance for sustainable production (PEGASUS)

Nina Silow Product and Production Development
Ann-Christine Falck Production Systems
Kristina Wärmefjord Product Development
Rikard Söderberg Product and Production Development
Mikael Rosenqvist Product Development
VINNOVA

1 publication exists
2016–2021

Smart Assembly 4.0

Rikard Söderberg Product and Production Development
Kristina Wärmefjord Product Development
Lars Lindkvist Product Development
Bengt Lennartson Automation
Johan Carlson Product Development
Roham Sadeghi Tabar Product Development
Swedish Foundation for Strategic Research (SSF)

2013–2016

Virtual demonstrators for parallel product and production system development

Christoffer E Levandowski Product Development
Rikard Söderberg Product and Production Development
Kristina Wärmefjord Product Development
VINNOVA

2012–2016

LOw COst Manufacturing and Assembly of Composite and Hybrid Structures (LOCOMACHS)

Rikard Söderberg Product and Production Development
Ilker Erdem Production Systems
Kristina Wärmefjord Product Development
Lars Lindkvist Product Development
European Commission (FP7)

2012–2013

Design For Manufacturing – methods for improved aerospace components manufacturing

Rikard Söderberg Product and Production Development
Kristina Wärmefjord Product Development
VINNOVA

2014–2016

GeoVar: Non-rigid geometry variation for fabricated aero engine structure

Rikard Söderberg Product and Production Development
Kristina Wärmefjord Product Development
European Commission (FP7)

2011–2013

Effektiva värdekedjor för framtagning av premiumprodukter

Rikard Söderberg Product and Production Development
Kristina Wärmefjord Product Development
Lars Lindkvist Product Development
VINNOVA

There might be more projects where Kristina Wärmefjord participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2017

A Welding Capability Assessment Method (WCAM) to support multidisciplinary design of aircraft structures

Rikard Söderberg, Julia Madrid, Anders Forslund et al
International Journal on Interactive Design and Manufacturing
Journal article
2017

Toward a Digital Twin for real-time geometry assurance in individualized production

Rikard Söderberg, Johan Carlson, Kristina Wärmefjord et al
CIRP Annals - Manufacturing Technology. Vol. 66 (1), p. 137-140
Journal article
2017

Inspection Data to Support a Digital Twin for Geometry Assurance

Lars Lindkvist, Johan Carlson, Kristina Wärmefjord et al
Proc. ASME IMECE. Vol. 2
Paper in proceedings
2016

Using product and manufacturing system platforms to generate producible product variants

Ola Isaksson, Hans L Johannesson, Kristina Wärmefjord et al
Procedia CIRP - 6th CIRP Conference on Assembly Technologies and Systems, CATS 2016, Gothenburg, Sweden, 16-18 May 2016. Vol. 44, p. 61-66
Paper in proceedings
2016

Towards Simulation of Geometrical Effects of Laser Tempering of Boron Steel before Self-Pierce Riveting

Rikard Söderberg, Ola Albinsson, Kristina Wärmefjord et al
Procedia CIRP. 6th CIRP Conference on Assembly Technologies and Systems, CATS 2016; Gothenburg; Sweden; 16-18 May 2016. Vol. 44, p. 304-309
Paper in proceedings
2016

Welding of non-nominal geometries – physical tests

Anders Appelgren, Hans-Olof Svensson, Kristina Wärmefjord et al
Procedia CIRP. Vol. 43, p. 136-141
Paper in proceedings
2016

Joining in Nonrigid Variation Simulation

Samuel C Lorin, Rikard Söderberg, Björn Lindau et al
Chapter in monograph, book
2016

Virtual Geometry Assurance Process and Toolbox

Kristina Wärmefjord, Rikard Söderberg, Johan Carlson et al
Procedia CIRP - 14th CIRP Conference on Computer Aided Tolerancing. Vol. 43, p. 3-12
Paper in proceedings
2016

Variation Simulation of Dissimilar Materials Using Clip Fasteners

Rikard Söderberg, Kristina Wärmefjord, Lars Lindkvist
Proceedings of the ASME International Mechanical Engineering Congress and Exposition (IMECE2016). Vol. 2
Paper in proceedings
2016

Geometry Assurance Integrating Process Variation with Simulation of Spring-In for Composite Parts and Assemblies

Cornelia Jareteg, Lars Lindkvist, Fredrik Edelvik et al
Journal of Computing and Information Science in Engineering. Vol. 16 (3), p. Article Number: 031003 -
Journal article
2016

Variation Simulation of Dissimilar Materials Using Clip Fasteners

Rikard Söderberg, Kristina Wärmefjord, Lars Lindkvist
Proceedings of the ASME International Mechanical Engineering Congress and Exposition (IMECE2016). Vol. 2
Paper in proceedings
2016

Controlling Geometrical Variation Caused by Assembly Fixtures

Rikard Söderberg, Kristina Wärmefjord, Johan Carlson
Journal of Computing and Information Science in Engineering. Vol. 16 (1)
Journal article
2016

Enabling reuse of inspection data to support robust design: a case in the aerospace industry

Rikard Söderberg, Johan Vallhagen, Kristina Wärmefjord et al
14th Cirp Cat 2016 Conference on Computer Aided Tolerancing. Vol. 43, p. 41-46
Paper in proceedings
2015

Development of a conceptual framework to assess producibility for fabricated aerospace components

Rikard Söderberg, Johan Vallhagen, Julia Madrid et al
Procedia CIRP - Proceedings of the 48th CIRP Conference on Manufacturing Systems. Vol. 41, p. 681-686
Paper in proceedings
2015

Variation simulation of stress during assembly of composite parts

Lars Lindkvist, Kristina Wärmefjord, Rikard Söderberg
CIRP Annals - Manufacturing Technology. Vol. 64 (1), p. 17-20
Journal article
2014

Method for Handling Model Growth in Nonrigid Variation Simulation of Sheet Metal Assemblies

Kristina Wärmefjord, Lars Lindkvist, Björn Lindau et al
Journal of Computing and Information Science in Engineering. Vol. 14 (3)
Journal article
2014

Tolerance plugin module in integrated design

Kristina Wärmefjord, Lars Lindkvist, Rikard Söderberg
Proceedings of the ASME Design Engineering Technical Conference. Vol. 3 B, p. Article number V03BT03A009-
Paper in proceedings
2014

Simulation of non-nominal welds by resolving the melted zone and its implication to variation simulation

Lars Lindkvist, Fredrik Edelvik, Rikard Söderberg et al
Paper in proceedings
2014

Variation simulation for composite parts and assemblies including variation in fiber orientation and thickness

Cornelia Jareteg, Fredrik Edelvik, Lars Lindkvist et al
Procedia CIRP CATS 2014. 5th CATS 2014 - CIRP Conference on Assembly Technologies and Systems. Vol. 23 (C), p. 235-240
Paper in proceedings
2014

Geometry Assurance Integrating Process Variation with Simulation of Spring-in for Composite Parts and Assemblies

Kristina Wärmefjord, Stig Larsson, Rikard Söderberg et al
Proc. of ASME 2014 International Mechanical Engineering Congress & Exposition. Vol. 2A
Paper in proceedings
2014

Operator Related Causes for Low Correlation Between Cat Simulations and Physical Results

Ann-Christine Falck, Kristina Wärmefjord, Rikard Söderberg et al
Proceedings of the ASME 2013 International Mechanical Engineering Congress & Exposition. Vol. 12
Paper in proceedings
2014

Decoupled fixturing strategies for minimized geometrical variation during cutting of stamped parts

Lars Lindkvist, Rikard Söderberg, Kristina Wärmefjord
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. Vol. 228 (11), p. 1401-1408
Journal article
2014

Form Division for Welded Aero Components in Platform-Based Development

Rikard Söderberg, Kristina Wärmefjord, Lars Lindkvist
Journal of Aerospace Engineering. Vol. 28 (5)
Journal article
2014

Minimizing Dimensional Variation and Robot Traveling Time in Welding Stations

Kristina Wärmefjord, Rikard Söderberg, Domenico Spensieri et al
5th CIRP Conference on Assembly Technologies and Systems, November 13-14, 2014, Dresden, Germany. Vol. 23 (C), p. 77-82
Paper in proceedings
2014

Variation simulation for composite parts and assemblies including variation in fiber orientation and thickness

Lars Lindkvist, Kristina Wärmefjord, Cornelia Jareteg et al
Procedia CIRP CATS 2014. 5th CATS 2014 - CIRP Conference on Assembly Technologies and Systems. Vol. 23 (C), p. 235-240
Paper in proceedings
2013

A framework for producibility and design for manufacturing requirements in a system engineering context

Rikard Söderberg, Ola Isaksson, Kristina Wärmefjord et al
Procedia CIRP. 2nd International Through-life Engineering Services Conference.. Vol. 11, p. 145-150
Paper in proceedings
2013

Prediction of geometrical variation of forged and stamped parts for assembly variation simulation

Lars Lindkvist, Kristina Wärmefjord, Samuel C Lorin et al
Paper in proceedings
2013

Simulation of the effect of geometrical variation on assembly and holding forces

Lars Lindkvist, Kristina Wärmefjord, Rikard Söderberg
International Journal of Product Development. Vol. 18 (1), p. 88-108
Journal article
2013

Simulation of Variation in Assembly Forces Due to Variation in Spot Weld Position

Kristina Wärmefjord, Rikard Söderberg, Lars Lindkvist
Paper in proceedings
2013

An approach for producibility and DFM-methodology in aerospace engine component development

Rikard Söderberg, Julia Madrid, Johan Vallhagen et al
2nd International Through-Life Engineering Services Conference, November 2013, Cranfield, UK. Vol. 11, p. 151-156
Paper in proceedings
2013

Aspects of fixture clamp modeling in non-rigid variation simulation of sheet metal assemblies

Lars Lindkvist, Kristina Wärmefjord, Rikard Söderberg et al
Paper in proceedings
2012

A Fixture Failure Control Chart For Variation Caused By Assembly Fixtures

Kristina Wärmefjord, Johan Carlson
roceedings of the ASME 2012 International Mechanical Engineering Congress & Exposition, IMECE2012, Houston, Texas, USA (PARTS A, B, AND C), p. 1807-1814
Paper in proceedings
2012

The influence of spot weld position variation on geometrical quality

Kristina Wärmefjord, Rikard Söderberg, Rolf Berlin et al
CIRP Annals - Manufacturing Technology. Vol. 61 (1), p. 13-16
Journal article
2012

Combining Variation Simulation With Welding Simulation for Prediction of Deformation and Variation of a Final Assembly

Rikard Söderberg, Kristina Wärmefjord, John Goldak et al
Journal of Computing and Information Science in Engineering. Vol. 12 (2), p. 021002-021007
Journal article
2011

Evaluating genetic algorithms on Welding sequence optimization with respect to dimensional variation and cycle time

Kristina Wärmefjord, Johan Carlson, Johan Segeborn et al
Proceedings of the ASME 2011 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE 2011 August 29-31, 2011, Washington, DC, USA (Volume 5: 37th Design Automation Conference, Parts A and B ) (Paper no. DETC2011-48393), p. 697-704
Paper in proceedings
2011

Robustness in aerospace components manufacturing and fabrication – a case study

Rikard Söderberg, Johan Lööf, Kristina Wärmefjord et al
Paper in proceedings
2010

An investigation of the effect of sample size on geometrical inspection point reduction using cluster analysis

Rikard Söderberg, Johan Carlson, Kristina Wärmefjord
CIRP Journal of Manufacturing Science and Technology. Vol. 3 (3), p. 227-235
Journal article
2010

Combining Variation Simulation with Welding Simulation for Prediction of Deformation

Lennart Karlsson, Rikard Söderberg, John Goldak et al
Proceedings of the ASME 2010 International Mechanical Engineering Congress & Exposition, Vancouver, British Columbia, Canada, November 12-18, 2010., p. 81-88
Paper in proceedings
2010

Including Assembly Fixture Repeatability in Rigid and Non-Rigid Variation Simulation

Kristina Wärmefjord, Rikard Söderberg, Johan Carlson
Proceedings of the ASME 2010 International Mechanical Engineering Congress & Exposition, Vancouver, British Columbia, Canada, November 12-18, 2010. (PARTS A AND B), p. 355-361
Paper in proceedings
2010

Strategies for Optimization of Spot Welding Sequence with Respect to Geometrical Variation in Sheet Metal Assemblies

Rikard Söderberg, Kristina Wärmefjord, Lars Lindkvist
Proceedings of the ASME 2010 International Mechanical Engineering Congress & Exposition, Vancouver, British Columbia, Canada, November 12-18, 2010. (PARTS A AND B), p. 569-577
Paper in proceedings
2010

Variation Simulation of Spot Welding Sequence for Sheet Metal Assemblies

Lars Lindkvist, Kristina Wärmefjord, Rikard Söderberg
Paper in proceedings
2010

An investigation of the effect of sample size on geometrical inspection point reduction using cluster analysis

Rikard Söderberg, Kristina Wärmefjord, Johan Carlson
CIRP Journal of Manufacturing Science and Technology. Vol. 3 (3), p. 227-235
Journal article
2009

A Measure of the Information Loss for Inspection Point Reduction

Kristina Wärmefjord, Rikard Söderberg, Johan Carlson
Journal of Manufacturing Science and Engineering, Transactions of the ASME. Vol. 131 (5), p. 693-700
Journal article
2008

A Measure of the Information Loss for Inspection Point Reduction

Rikard Söderberg, Johan Carlson, Kristina Wärmefjord
Paper in proceedings
2008

Tolerance Simulation of Compliant Sheet Metal Assemblies Using Automatic Node-Based Contact Detection

Lars Lindkvist, Rikard Söderberg, Kristina Wärmefjord
Proceedings of ASME International Mechanical Engineering Congress & Exposition, October 31- November 6, 2008, Boston, USA, p. 35-44
Paper in proceedings
2007

Geometrical inspection point reduction for rigid and non-rigid parts using cluster analysis – an industrial verification

Kristina Wärmefjord, Johan Carlson, Rikard Söderberg
Paper in proceedings