Photo of Johnny Jakobsen
  • Fibigerstræde 16, 3225

    9220 Aalborg Ø

    Denmark

20052019
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Research Output 2005 2019

2019

256 shades of gray: Application of image processing to evaluate the effect of sample geometry and constant shear strain rates in the picture-frame test

Krogh, C., Dangora, L. M., White, K. D., Jakobsen, J. & Sherwood, J. A., 5 Jul 2019, AIP Conference Proceedings. 1 ed. AIP Conference Proceedings, Vol. 2113. p. 020001 6 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access

Design of Automated Robotic System for Draping of Prepreg Composite Fabrics

Ellekilde, L-P., Wilm, J., Nielsen, O. W., Krogh, C., Glud, J. A., Gunnarsson, G. G., Stærk Stenvang, T., Kristiansen, E., Jakobsen, J., Kristiansen, M., Hannemose, M., Aanæs, M., de Kruijk, J., Sveidahl, I., Ikram, A. & Petersen, H. G., 8 Nov 2019, (Submitted) In : Robotica. 9 p.

Research output: Contribution to journalJournal articleResearchpeer-review

1 Citation (Scopus)

Fatigue damage simulation of tension-tension loaded glass/polyester fiber composites with thickness tapering effects

Raeis Hosseiny, S. A. & Jakobsen, J., 1 Feb 2019, In : Journal of Composite Materials. 53, 3, p. 297-314 18 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Polyesters
Fatigue damage
Fatigue of materials
Glass
Fibers

Generation of Feasible Gripper Trajectories in Automated Composite Draping by means of Optimization

Krogh, C., Sherwood, J. A. & Jakobsen, J., 28 Dec 2019, In : Advanced Manufacturing: Polymer and Composites Science. 5, 4, p. 234-249 15 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
2 Citations (Scopus)
62 Downloads (Pure)

Modeling the robotic manipulation of woven carbon fiber prepreg plies onto double curved molds: a path dependent problem

Krogh, C., Glud, J. A. & Jakobsen, J., 1 Jun 2019, In : Journal of Composite Materials. 53, 15, p. 2149-2164 16 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Grippers
Molds
Virtual reality
Carbon fibers
Robotics

The Issue of the Tissue: Determining Feasible Robot Draping Sequences for Woven Prepreg Plies

Krogh, C. & Jakobsen, J., Mar 2019.

Research output: Contribution to conference without publisher/journalConference abstract for conferenceResearch

2018

Development of a Computationally Efficient Fabric Model for Optimization of Gripper Trajectories in Automated Composite Draping

Krogh, C., Jakobsen, J. & Sherwood, J. A., 13 Sep 2018, EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Schweiz: Springer, p. 1107-1118 12 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Grippers
Trajectories
Composite materials
Stiffness

Enthalpy relaxation and post shrinkage of sub and sup-Tg cured epoxy

Jensen, M. & Jakobsen, J., 15 Oct 2018, In : Journal of Non-Crystalline Solids. 498, p. 60-63 4 p.

Research output: Contribution to journalJournal articleResearchpeer-review

shrinkage
Enthalpy
enthalpy
Cooling
cooling
2017

Blind prediction of fatigue damage in composite laminates with tapering effects

Raeis Hosseiny, S. A. & Jakobsen, J., Sep 2017, 6th ECCOMAS Thematic Conference on the Mechanical Response of Composites 2017. 1 p.

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearch

Fatigue failure predictions in thickness tapered areas of a glass/polyester fiber composite

Raeis Hosseiny, S. A. & Jakobsen, J., Oct 2017, The 30th Nordic Seminar on Computational Mechanics. DTU Mechanical Engineering , p. 85-88

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
4 Citations (Scopus)

Modeling of Prepregs during Automated Draping Sequences

Krogh, C., Glud, J. A. & Jakobsen, J., 16 Oct 2017, Proceedings of the 20th International Esaforum Conference on Material Forming - ESAFORM 2017. 1 ed. AIP Conference Proceedings, Vol. 1896.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Grippers
Bending tests
Kinematics
Finite element method
Defects

Modeling of Prepregs during Automated Draping Sequences

Krogh, C., Glud, J. A. & Jakobsen, J., 15 Mar 2017.

Research output: Contribution to conference without publisher/journalPosterResearch

54 Downloads (Pure)

Modeling of Robot Draping Sequences with Prepreg Plies

Krogh, C. & Jakobsen, J., 12 Oct 2017, Proceedings of the 30th Nordic Seminar on Computational Mechanics. Høgsberg, J. & Pedersen, N. L. (eds.). DTU, p. 104-107 4 p. (Proceedings of the Nordic Seminar on Computational Mechanics, (NSCM), Vol. 2017).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File

Prediction of fatigue damage in tapered laminates

Raeis Hosseiny, S. A. & Jakobsen, J., Mar 2017, 16th Internal symposium, DCAMM.

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearch

Fatigue damage
Laminates
Cracks
Delamination
Wind turbines
2016
3 Citations (Scopus)

Effect of cure cycle on enthalpy relaxation and post shrinkage in neat epoxy and epoxy composites

Jensen, M. & Jakobsen, J., 2016, In : Journal of Non-Crystalline Solids. 452, p. 109-113

Research output: Contribution to journalJournal articleResearchpeer-review

96 Downloads (Pure)

Local fatigue behavior in tapered areas of large offshore wind turbine blades

Raeis Hosseiny, S. A. & Jakobsen, J., 2 Sep 2016, 37th Risø International Symposium on Materials Science. Madsen, B., Biel, A., Kusano, Y., Lilholt, H., Mikkelsen, L. P., Mishnaevsky Jr., L. & Sørensen, B. F. (eds.). IOP Publishing, p. 237-244 8 p. 012022. (IOP Conference Series: Materials Science and Engineering; No. 1, Vol. 139).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
File
Offshore wind turbines
Fatigue of materials
Delamination
Wind turbines
Turbomachine blades
2015

An elastic solution for a new notched residual stess specimen subjected to an anti-clastic loading

Jakobsen, J. & Lyckegaard, A., 29 Jul 2015. 9 p.

Research output: Contribution to conference without publisher/journalPaper without publisher/journalResearchpeer-review

4 Citations (Scopus)

A novel biaxial specimen for inducing residual stresses in thermoset polymers and fibre composite material

Jakobsen, J., Andreasen, J. H. & Jensen, M., 2015, In : Journal of Composite Materials. 49, 22, p. 2723–2731 9 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Thermosets
Residual stresses
Polymers
Fibers
Composite materials
3 Citations (Scopus)

Configurational Entropy in Thermoset Polymers

Jensen, M. & Jakobsen, J., 2015, In : Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical. 119, 17, p. 5645–5649

Research output: Contribution to journalJournal articleResearchpeer-review

4 Citations (Scopus)

In-situ Curing Strain Monitoring of a Flat Plate Residual Stress Specimen using a Chopped Stand Mat Glass/Epoxy Composite as Test Material

Jakobsen, J., Skordos, A., James, S., Correia, R. & Jensen, M., Dec 2015, In : Applied Composite Materials. 22, 6, p. 805-822

Research output: Contribution to journalJournal articleResearchpeer-review

257 Downloads (Pure)

Investigation of the Residual Stress State in an Epoxy Based Specimen

Baran, I., Jakobsen, J., Andreasen, J. H. & Akkerman, R., 2015, In : Key Engineering Materials. 651-653, p. 375-380 6 p.

Research output: Contribution to journalJournal articleResearchpeer-review

File
2014
1 Citation (Scopus)

A Comparison of gel point for a Glass/Epoxy Composite and a Neat Epoxy Material during Isothermal Curing

Jakobsen, J., Andreasen, J. H. & Thomsen, O. T., 2014, In : Journal of Composite Materials. 48, 8, p. 917-929

Research output: Contribution to journalJournal articleResearchpeer-review

Modelling of the Residual Stress State in a new Type of Residual Stress Specimen

Jakobsen, J. & Andreasen, J. H., 2014, Proceedings of ECCM16 - 16TH EUROPEAN CONFERENCE ON COMPOSITE MATERIALS. 8 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2013

Materials Characterisation of Glass/epoxy Composites - Focusing on Process Conditions

Jakobsen, J., Lyckegaard, A., Jensen, E. A. & Andreasen, J. H., 2013, Proceedings of 34th Risø International Symposium on Materials Science . Madsen, B., Lilholdt, H., Kusano, Y., Fæster, S. & Ralph, B. (eds.). Department of Wind Energi, Technical University of Denmark, p. 253-260

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

RESIDUAL STRAIN MEASUREMENTS OF GLASS/EPOXY COMPOSITE LAMINATE USING A NEW TYPE OF SPECIMEN DESIGN

Jakobsen, J., Andreasen, J. H. & Thomsen, O. T., 2013, Proceedings of the 19th International Conference on Composite Materials. Canadian Association For Composite Structures And Materials , Vol. 1. p. 5123-5129 7 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Shrinkage and Thermal Expansion Model for a Glass/Epoxy Laminate

Jakobsen, J., Andreasen, J. H., Jensen, E. A. & Thomsen, O. T., 2013. 1 p.

Research output: Contribution to conference without publisher/journalPosterResearchpeer-review

Shrinkage and Thermal Expansion Model for a Glass/Epoxy Laminate

Jakobsen, J., Andreasen, J. H., Jensen, E. A. & Thomsen, O. T., Apr 2013, CompTest 2013 - Book of Abstracts: Proceedings of 6th International Conference on Composites Testing and Model Identification. Thomsen, O. T., Sørensen, B. F. & Berggreen, C. (eds.). Institut for Mekanik og Produktion, Aalborg Universitet, p. 143-145 3 p.

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearchpeer-review

12 Citations (Scopus)

Thermo-mechanical Characterisation of In-plane Properties for CSM E-glass Epoxy Polymer Composite Materials: Part 2: Young's Modulus

Jakobsen, J., Jensen, M. & Andreasen, J. H., 2013, In : Polymer Testing. 32, 8, p. 1417-1422

Research output: Contribution to journalJournal articleResearchpeer-review

25 Citations (Scopus)
2012

Thermal performance of a composite mould tool with two integrated heating/cooling zones

Jakobsen, J., Andreasen, J. H. & Thomsen, O. T., 2012, Proceedings ECCM15 – 15th European Conference On Composite Materials, Venice, Italy, 24-28 June, 2012. 5 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2009
21 Citations (Scopus)

Crack Deflection Analyses of Different Peel Stopper Designs for Sandwich Structures: Special ONR Issue

Jakobsen, J., Thomsen, O. T., Andreasen, J. H. & Bozhevolnaya, E., May 2009, In : Composites Science and Technology. 69, 6, p. 870-875 6 p.

Research output: Contribution to journalJournal articleResearchpeer-review

22 Citations (Scopus)

Crack Deflection by Core Junctions in Sandwich Structures

Jakobsen, J., Andreasen, J. H. & Thomsen, O. T., 2009, In : Engineering Fracture Mechanics. 76, 14, p. 2135-2147

Research output: Contribution to journalJournal articleResearchpeer-review

15 Citations (Scopus)

Examination of the Failure of Sandwich Beams with Core Junctions Subjected to In-Plane Tensile Loading

Johannes, M., Jakobsen, J., Thomsen, O. T. & Bozhevolnaya, E., 2009, In : Composites Science and Technology. 69, 9, p. 1447-1457

Research output: Contribution to journalConference article in JournalResearchpeer-review

17 Citations (Scopus)

Fatigue Performance of Sandwich Beams With Peel Stoppers

Bozhevolnaya, E., Jakobsen, J. & Thomsen, O. T., 2009, In : Strain. 45, 4, p. 349-357

Research output: Contribution to journalJournal articleResearchpeer-review

Mixed Mode Fracture Toughness Characterization of Sandwich Interfaces Using the Modified TSD Specimen

Berggreen, C., Andreasen, J. H., Jakobsen, J., Carlsson, L. & Thomsen, O. T., 2009.

Research output: Contribution to conference without publisher/journalPaper without publisher/journalResearchpeer-review

1 Citation (Scopus)

Modelling of Crack deflection at Core Junctions in Sandwich Structures

Jakobsen, J., Andreasen, J. H. & Thomsen, O. T., 2009, In : Journal of Physics - Conference Series. 1, 8 p.

Research output: Contribution to journalConference article in JournalResearchpeer-review

The Controlling of Debonding in Sandwich Structures

Thomsen, O. T., Jakobsen, J. & Andreasen, J. H., 2009.

Research output: Contribution to conference without publisher/journalPaper without publisher/journalResearchpeer-review

2008

Analysis of Tri Material Crack Problem

Lyckegaard, A., Andreasen, J. H. & Jakobsen, J., 2008.

Research output: Contribution to conference without publisher/journalPosterResearch

Controlling Delamination in Composite Sandwich Structures

Thomsen, O. T., Jakobsen, J. & Andreasen, J. H., 2008, Proceedings of the ONR Solid Mechanics Program - Marine Composites and Sandwich Structures. Rajapakse, Y. D. S. (ed.). Office of Navel research, US Navy, p. 290-301

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Core Cracks in Sandwich Panels under Three and Four Point Bending

Andreasen, J. H., Lyckegaard, A. & Jakobsen, J., 2008, ECF17. al., J. P. E. (ed.).

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearch

25 Citations (Scopus)

Crack kinking of a delamination at an inclined core junction interface in a sandwich beam

Jakobsen, J., Andreasen, J. H. & Bozhevolnaya, E., 2008, In : Engineering Fracture Mechanics. 75, 16, p. 4759-4773

Research output: Contribution to journalJournal articleResearchpeer-review

Crack Propagation at Core Junctions in Sandwich Panels

Lyckegaard, A., Jakobsen, J., Andreasen, J. H. & Bozhevolnaya, E., 2008, Sandwich Construction 8: ICSS 8: Proceedings of the 8th International Conference on Sandwich Structures. Ferreira, A. J. M. (ed.). Faculty of Engineering, University of Porto, p. 683-692

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

9 Citations (Scopus)

Failure prediction of in-plane loaded sandwich beams with core junctions

Jakobsen, J., Johannes, M. & Bozhevolnaya, E., 2008, In : Composite Structures. 82, 2, p. 194-200

Research output: Contribution to journalJournal articleResearchpeer-review

Fracture Mechanics Modelling and Experimental Meassurements of Crack Kinking at Sandwich Core-core Interfaces

Jakobsen, J., Andreasen, J. H., Thomsen, O. T. & Bozhevolnaya, E., 2008, Sandwich Construction 8: ICSS 8: Proceedings of the 8th International Conference on Sandwich Structures. Ferreira, A. J. M. (ed.). Faculty of Engineering, University of Porto, p. 85-96

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Improvement of the Performance of Sandwich Structures through Control of Local Effects

Jakobsen, J., Thomsen, O. T. & Bozhevolnaya, E., 2008, In : Plast Panorama Scandinavia. 3, 57, p. 14-16

Research output: Contribution to journalJournal articleCommunication

Local Effects and the Control of Face-Core Debond Failure in Sandwich Structures

Jakobsen, J., 2008, Aalborg: Department of Mechanical Engineering, Aalborg University. (Special Report; No. 61).

Research output: Book/ReportPh.D. thesisResearch

2007

Controlling Delamination in sandwich Beams

Thomsen, O. T., Bozhevolnaya, E., Jakobsen, J. & Andreasen, J. H., 2007, Proceedings of 3rd Key Euro-USA Conference: Stretching the Endurance Boundary of Composite Materials:Pushing the Performance Limit of Composite Structures. p. 85-89

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Interface to Interface Core Cracks in Sandwich Structures

Andreasen, J. H., Jakobsen, J. & Lyckegaard, A., 2007, Proceedings of the 16th International Conference  on Composite Materials. Japan Society for Composite Materials

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

New Crack Stopper Concept for sandwich Structures

Jakobsen, J., Bozhevolnaya, E. & Thomsen, O. T., 2007, Proceedings of the 16th International Conference on Composite Materials. Japan Society for Composite Materials, p. 100-101 2 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

New Knowledge on Composite and Sandwich Structures

Brøndsted, P., Nøkkentved, A., Bozhevolnaya, E., Jakobsen, J. & Thomsen, O. T., 2007, In : Plast Panorama Scandinavia. 3, p. 12-14 3 p.

Research output: Contribution to journalJournal articleCommunication