Kristina Wärmefjord

Docent at Department of Product and Production Development, 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

2016–2021

Smart Assembly 4.0

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

2013–2016

Virtual demonstrators for parallel product and production system development

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

2013–2016

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

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

2012–2016

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

Rikard Söderberg Department of Product and Production Development
Ilker Erdem Department of Product and Production Development, Production Systems
Kristina Wärmefjord Department of Product and Production Development, Product Development
Lars Lindkvist Department of Product and Production Development, Product Development
EC, Seventh Framework program (FP7)

2012–2013

Design For Manufacturing – methods for improved aerospace components manufacturing

Rikard Söderberg Department of Product and Production Development
Kristina Wärmefjord Department of Product and Production Development, Product Development
VINNOVA

2014–2016

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

Rikard Söderberg Department of Product and Production Development
Kristina Wärmefjord Department of Product and Production Development, Product Development
EC, Seventh Framework program (FP7)

2011–2013

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Rikard Söderberg Department of Product and Production Development
Kristina Wärmefjord Department of Product and Production Development, Product Development
Lars Lindkvist Department of Product and Production Development, 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

2016

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

Julia Madrid Ruiz, Johan Vallhagen, Rikard Söderberg et al
14th Cirp Cat 2016 Conference on Computer Aided Tolerancing. Vol. 43, p. 41-46
Conference paper - peer reviewed
2016

Joining in Nonrigid Variation Simulation

Kristina Wärmefjord, Rikard Söderberg, Björn Lindau et al
Computer-aided Technologies - Applications in Engineering and Medicine
Chapter in monograph, book
2016

Variation Simulation of Dissimilar Materials Using Clip Fasteners

Kristina Wärmefjord, Rikard Söderberg, Lars Lindkvist et al
Proc. ASME IMECE 2016
Conference paper - peer reviewed
2016

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

Cornelia Jareteg, Kristina Wärmefjord, C. Cromvik et al
Journal of Computing and Information Science in Engineering. Vol. 16 (3)
Scientific journal article - peer reviewed
2016

Virtual Geometry Assurance Process and Toolbox

Rikard Söderberg, Lars Lindkvist, Kristina Wärmefjord et al
Procedia CIRP - 14th CIRP Conference on Computer Aided Tolerancing. Vol. 43, p. 3-12
Conference paper - peer reviewed
2016

Using product and manufacturing system platforms to generate producible product variants

Jonas Landahl, Christoffer Levandowski, Hans Johannesson 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
Conference paper - peer reviewed
2016

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

SOFFÍA ARNÞRÚÐUR GUNNARSDÓTTIR, Alejandro Rodriguez Basurto, 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
Conference paper - peer reviewed
2016

Welding of non-nominal geometries – physical tests

Kristina Wärmefjord, Rikard Söderberg, Mikael Ericsson et al
Procedia CIRP. Vol. 43, p. 136-141
Conference paper - peer reviewed
2016

Controlling Geometrical Variation Caused by Assembly Fixtures

Kristina Wärmefjord, Johan S Carlson, Rikard Söderberg et al
Journal of Computing and Information Science in Engineering. Vol. 16 (1)
Scientific journal article - peer reviewed
2015

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

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

Variation simulation of stress during assembly of composite parts

Rikard Söderberg, Kristina Wärmefjord, Lars Lindkvist et al
CIRP Annals - Manufacturing Technology. Vol. 64 (1), p. 17-20
Scientific journal article - peer reviewed
2014

Minimizing Dimensional Variation and Robot Traveling Time in Welding Stations

Johan S Carlson, Domenico Spensieri, Kristina Wärmefjord et al
5th CIRP Conference on Assembly Technologies and Systems, November 13-14, 2014, Dresden, Germany. Vol. 23 (C), p. 77-82
Conference paper - peer reviewed
2014

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

Cornelia Jareteg, Kristina Wärmefjord, Rikard Söderberg et al
Procedia CIRP CATS 2014. 5th CATS 2014 - CIRP Conference on Assembly Technologies and Systems. Vol. 23, p. 235–240
Conference paper - peer reviewed
2014

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

Cornelia Jareteg, Kristina Wärmefjord, Christoffer Cromvik et al
Proc. of ASME 2014 International Mechanical Engineering Congress & Exposition. Vol. 2A
Conference paper - peer reviewed
2014

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

Samuel Lorin, Christoffer Cromvik, Fredrik Edelvik et al
Proceeding of the ASME 2014 International Design Engineering Technical Conference & Computers and Information in Engineering Conference
Conference paper - peer reviewed
2014

Form Division for Welded Aero Components in Platform-Based Development

Kristina Wärmefjord, Rikard Söderberg, Lars Lindkvist et al
Journal of Aerospace Engineering. Vol. 28 (5)
Scientific journal article - peer reviewed
2014

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

Kristina Wärmefjord, Rikard Söderberg, Lars Lindkvist et al
Proceedings of the Institution of mechanical engineers. Part B, journal of engineering manufacture. Vol. 228 (11), p. 1401–1408
Scientific journal article - peer reviewed
2014

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

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

Tolerance plugin module in integrated design

Rikard Söderberg, Kristina Wärmefjord, Lars Lindkvist et al
Proceedings of the ASME Design Engineering Technical Conference. Vol. 3 B, p. Article number V03BT03A009
Conference paper - peer reviewed
2014

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

Mikael Rosenqvist, Ann-Christine Falck, Kristina Wärmefjord et al
Proceedings of the ASME 2013 International Mechanical Engineering Congress & Exposition. Vol. 12
Conference paper - peer reviewed
2013

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

Björn Lindau, Kristina Wärmefjord, Lars Lindkvist et al
Proceedings of ASME 2013 International Mechanical Engineering Congress and Exposition
Conference paper - peer reviewed
2013

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

Johan Vallhagen, Ola Isaksson, Rikard Söderberg et al
Procedia CIRP. 2nd International Through-life Engineering Services Conference.. Vol. 11, p. 145-150
Conference paper - peer reviewed
2013

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

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

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

Kristina Wärmefjord, Rikard Söderberg, Peter Ottosson et al
Proceedings of International Deep Drawing Research Group Conference 2013, IDDRG2013
Conference paper - peer reviewed
2013

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

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

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

Kristina Wärmefjord, Rikard Söderberg, Lars Lindkvist et al
Smart Product Engineering, Proceedings of the 23rd CIRP Design Conference
Conference paper - peer reviewed
2012

A Fixture Failure Control Chart For Variation Caused By Assembly Fixtures

Kristina Wärmefjord, Johan S Carlson,
roceedings of the ASME 2012 International Mechanical Engineering Congress & Exposition, IMECE2012, Houston, Texas, USA
Conference paper - peer reviewed
2012

The influence of spot weld position variation on geometrical quality

Rikard Söderberg, Kristina Wärmefjord, Lars Lindkvist et al
CIRP Annals - Manufacturing Technology. Vol. 61 (1), p. 13-16
Scientific journal article - peer reviewed
2012

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

Andreas Pahkamaa, Kristina Wärmefjord, Lennart Karlsson et al
Journal of Computing and Information Science in Engineering. Vol. 12 (2), p. 021002-021007
Scientific journal article - peer reviewed
2011

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

Johan Segeborn, Johan S Carlson, Kristina Wärmefjord 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
Conference paper - peer reviewed
2011

Robustness in aerospace components manufacturing and fabrication – a case study

Johan Vallhagen, Johan Lööf, Rikard Söderberg et al
Proceedings of ISABE2011
Conference paper - peer reviewed
2010

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

Kristina Wärmefjord, Johan S Carlson, Rikard Söderberg et al
CIRP - Journal of Manufacturing Science and Technology. Vol. 3 (3), p. 227-235
Scientific journal article - peer reviewed
2010

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

Kristina Wärmefjord, Rikard Söderberg, Lars Lindkvist et al
Proceedings of the ASME 2010 International Mechanical Engineering Congress & Exposition, Vancouver, British Columbia, Canada, November 12-18, 2010.
Conference paper - peer reviewed
2010

Combining Variation Simulation with Welding Simulation for Prediction of Deformation

Andreas Pahkamaa, Kristina Wärmefjord, Lennart Karlsson et al
Proceedings of the ASME 2010 International Mechanical Engineering Congress & Exposition, Vancouver, British Columbia, Canada, November 12-18, 2010.
Conference paper - peer reviewed
2010

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

Kristina Wärmefjord, Rikard Söderberg, Johan S Carlson et al
Proceedings of the ASME 2010 International Mechanical Engineering Congress & Exposition, Vancouver, British Columbia, Canada, November 12-18, 2010.
Conference paper - peer reviewed
2010

Variation Simulation of Spot Welding Sequence for Sheet Metal Assemblies

Kristina Wärmefjord, Rikard Söderberg, Lars Lindkvist et al
Proceedings of NordDesign2010 International Conference on Methods and Tools for Product and Production Development, August 25-27, Gothenburg, Sweden
Conference paper - peer reviewed
2009

A Measure of the Information Loss for Inspection Point Reduction

Kristina Wärmefjord, Johan S Carlson, Rikard Söderberg et al
Journal of Manufacturing Science Engineering. Vol. 131 (5)
Scientific journal article - peer reviewed
2008

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

Kristina Wärmefjord, Lars Lindkvist, Rikard Söderberg et al
Proceedings of ASME International Mechanical Engineering Congress & Exposition, October 31- November 6, 2008, Boston, USA
Conference paper - peer reviewed
2008

A Measure of the Information Loss for Inspection Point Reduction

Kristina Wärmefjord, Johan S Carlson, Rikard Söderberg et al
Proceedings of the ASME 2008 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, August 3-6, 2008, Brooklyn, New York, USA
Conference paper - peer reviewed
2007

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

Kristina Wärmefjord, Johan S Carlson, Rikard Söderberg et al
10th CIRP Conference on Computer Aided Tolerancing, Specification and Verification for Assemblies, March 21-23, Erlangen, Germany, 2007
Conference paper - peer reviewed