R. Krueger.
An Approach for Assessing Delamination Propagation Capabilities in Commercial Finite Element Codes.
In Proceedings of American Society for Composites, 22nd Annual Technical Conference, Seattle, Washington, 2007.
R. Krueger, J.G. Ratcliffe, and P.J. Minguet.
Panel Stiffener Debonding Analysis Using A Shell/3D Modeling Technique.
In Proceedings of 16th International Conference on Composite Materials (ICCM-16), Kyoto, Japan, July 2007.
R. Krueger, J.G. Ratcliffe, and P.J. Minguet.
Analysis of Composite Panel-Stiffener Debonding Using A Shell/3D Modeling Technique.
NIA Report No. 2007-07, NASA/CR-2007-214879, 2007.
R. Krueger and D. Goetze.
Influence of Finite Element Software on Energy Release Rates Computed Using the Virtual Crack Closure Technique.
NIA Report No. 2006-06, NASA/CR-214523, 2006.
T. K. O'Brien and R. Krueger.
Influence of Compression and Shear on the Strength of Composite Laminates with Z-Pinned Reinforcement.
Applied Composite Materials, vol. 13, pp. 173-189, 2006.
R. Krueger and P. J. Minguet.
Composite Skin/Stringer Disbond Analysis Using A Shell/3D Modeling Technique.
In Proceedings of American Society for Composites, 21st Annual Technical Conference, Dearborn, Michigan, 2006.
J. Ratcliffe and R. Krueger.
A Finite Element Analysis for Predicting Mode I-Dominated Delamination Growth in Laminated Structure with Through-Thickness Reinforcement.
In Proceedings of American Society for Composites, 21st Annual Technical Conference, Dearborn, Michigan, 2006.
R. Krueger and P. J. Minguet.
Analysis of Composite Panel-Stiffener Debonding Using a Shell/3D Modeling Technique.
NIA Report No. 2006-02, NASA/CR-2006-214299, 2006.
R. Krueger.
Computational Fracture Mechanics for Composites - State of the Art and Challenges.
In Proceedings of NAFEMS Nordic Seminar: Prediction and Modelling of Failure Using FEA, Roskilde, Denmark, 2006.
T. K. O'Brien and R. Krueger.
Influence of Compression and Shear on the Strength of Composite Laminates with Z-pinned Reinforcement.
In Proceedings of The Fifth Canadian-International Composites Conference, CANCOM 2005, Vancouver, BC, Canada, 2005.
T. K. O'Brien and R. Krueger.
Influence of Compression and Shear on the Strength of Composite Laminates with Z-Pinned Reinforcement.
NASA/TM-2005-213768, ARL-TR-3524, 2005.
R. Krueger and P. J. Minguet.
Skin-Stiffener Debond Prediction Based on Computational Fracture Analysis.
NIA Report No. 2005-06, NASA/CR-2005-213915, 2005.
R. Krueger and P. J. Minguet.
Skin-Stiffener Debond Prediction Based on Computational Fracture Analysis.
In Proceedings of The Fifth Canadian-International Composites Conference, CANCOM 2005, Vancouver, BC, Canada, 2005, p. Paper no 14.
R. Krueger.
Modeling of Unit-Cells with Z-Pins Using FLASH: Pre-Processing and Post-Processing.
NIA Report No. 2005-01, NASA/CR-2005-213905, 2005.
M. König, R. Krüger, E. Kohler, M. Kurz, and T. Ruckstuhl.
Experimantal and Numerical
Analysis of Delamination Gropwth in a Graphite/Epoxy Specimen Caused by a Ply Cut.
In 2004 International Conference on Computational & Experimental Engineering & Science. Madeira, Portugal:
Tech Science Press, 2004, pp. 427-432.
R. Krueger and P. J. Minguet.
Analysis of
Composite Skin-Stiffener Debond Specimens Using a Shell/3D Modeling Technique and Submodeling.
NIA Report No. 2004-04, NASA/CR-2004-212684, 2004.
R. Krueger.
Virtual Crack Closure
Technique: History, Approach and Applications.
Applied Mechanics Reviews, vol. 57, pp. 109-143, 2004.
I. L. Paris, R. Krueger, and T. K. O'Brien.
Effect of Assumed Damage and
Location on the Delamination Onset Predictions for Skin-Stiffener Debonding.
AHS Journal, vol. 49, pp. 501-507, 2004.
R. Krueger, T. K. O'Brien, and P. J. Minguet.
Implementation of Interlaminar Fracture
Mechanics In Design: An Overview.
Presented at ICCM-14, San Diego, SME Technical Paper EM03-384, 2003.
T. K. O'Brien and R. Krueger.
Analysis
of Flexure Tests for Transverse Tensile Strength Characterization of Unidirectional Composites.
Journal of Composites Technology and Research, vol. 25, pp. 50-68, 2003.
R. Krueger and P. J. Minguet.
Analysis of Composite Skin-stiffener
Debond Specimens Using Volume Elements and a Shell/3D Modeling Technique.
NASA/CR-2002-211947, ICASE Report No. 2002-38, October 2002.
R. Krueger, I. L. Paris, T. K. O'Brien, and P. J. Minguet.
Comparison of 2D Finite Element Modeling Assumptions
with Results from 3D Analysis for Composite Skin-Stiffener Debonding.
Composite Structures, vol. 57, pp. 161-168, 2002.
R. Krueger, T. K. O'Brien, and P. J. Minguet.
Application of the Shell/3D Modeling Technique
for the analysis of Skin-Stiffener Debond Specimens.
In Proceedings of the American Society for Composites - 17th Annual Technical Conference on Composite Materials,
C. T. Sun and H. Kim, Eds.: CRC Press LLC, 2002.
R. Krueger.
The Virtual Crack Closure Technique:
History, Approach and Applications
NASA/CR-2002-211628, ICASE Report No. 2002-10, May 2002.
R. Krueger and P. J. Minguet.
Influence of 2D Finite
Element Modeling Assumptions on Debonding Prediction For
Composite Skin-Stiffener Specimens Subjected to Tension and Bending.
NASA/CR-2002-211452, ICASE Report No. 2002-4, March 2002.
R. Krueger, I. L. Paris, T. K. O'Brien, and P. J. Minguet.
Fatigue Life Methodology for
Bonded Composite Skin/Stringer Configurations.
Journal of Composites Technology and Research, vol. 24, 2002.
T. K. O'Brien, A. D. Chawan, R. Krueger, and I. Paris.
Transverse Tension Fatigue Life
Characterization of Carbon Epoxy Composites.
International Journal of Fatigue, vol. 24, pp. 127-146, 2002.
R. Krueger, I. L. Paris, T. K. O'Brien, and P. J. Minguet.
Comparison
of 2D Finite Element Modeling Assumptions with Results From 3D Analysis
for Composite Skin-Stiffener Debonding.
Presented at the 11th International Conference on Composite Structures,
Melbourne, Australia, November 2001.
I. L. Paris, R. Krueger and T. K. O'Brien.
Effect
of Initial Damage Type and Location on the Delamination Onset Predictions
for Skin-Stiffener Debonding.
Presented at AHS Structures Specialist Meeting, Williamsburg, November
2001.
T. K. O'Brien and R. Krueger.
Analysis
of Ninety Degree Flexure Tests for Characterization of Composite Transverse
Tensile Strength and Fatigue Life.
NASA/TM-2001-211227, ARL-TR-2568, October 2001.
T. K. O'Brien, A. D. Chawan, R. Krueger and I. L. Paris.
Transverse
Tension Fatigue Life Characterization Through Flexure Testing of Composite
Materials.
NASA/TM-2001-211035, ARL-TR-2544, July 2001.
R. Krueger, I. L. Paris, T. K. O'Brien, and P. J. Minguet.
Fatigue
Life Methodology for Bonded Composite Skin/Stringer Configurations.
NASA TM-2001-210842, ARL-TR-2432, April 2001.
R. Krueger and T. K. O'Brien.
A
Shell/3D Modeling Technique for the Analysis of Delaminated Composite Laminates.
Composites Part A: applied science and manufacturing, vol. 32, pp.
25-44, 2001.
R. Krueger, P. J. Minguet, and T. K. O'Brien.
A Method
for Calculating Strain Energy Release Rates in Preliminary Design of Composite
Skin/Stringer Debonding under Multi-Axial Loading,
in Composite Materials: Theory and Practice, ASTM STP 1383, P. Grant
and C. Q. Rousseau, Eds.: American Society for Testing and Materials, 2000,
pp.105-128.
M. König, R. Krüger, and S. Rinderknecht.
Finite
Element Analysis of Delamination Growth in a Multidirectional Composite
ENF Specimen,
in Composite Materials: Theory and Practice, ASTM STP 1383, P. Grant
and C. Q. Rousseau, Eds.: American Society for Testing and Materials, 2000,
pp. 345-365.
R. Krueger, I. L. Paris, T. K. O'Brien, and P. J. Minguet.
Fatigue
Life Methodology for Bonded Composite Skin/Stringer Configurations.
in Proceedings of the American Society for Composites - 15th Annual
Technical Conference on Composite Materials: Technomic Publishing, 2000,
pp. 729-736.
R. Krueger and T. K. O'Brien.
A
Shell/3D Modeling Technique for the Analysis of Delaminated Composite Laminates.
NASA/TM-2000-210287, ARL-TR-2207, June 2000.
R. Krueger, M. K. Cvitkovich, T. K. O'Brien, and P. J. Minguet.
Testing
and Analysis of Composite Skin/Stringer Debonding Under Multi-Axial Loading.
Journal of Composite Materials, vol. 34, pp. 1263-1300, 2000.
R. Krueger.
A Shell/3D
Modeling Technique for Delaminations in Composite Laminates.
Proceedings the 14th Annual Technical Conference on Composite Materials,
American Society for
Composites ? Dayton, Technomic Publishing, ISBN 1-56676-791-1, pp.
843-852, 1999.
R. Krueger, P.J. Minguet, and T.K. O'Brien.
A
Method for Calculating Strain Energy Release Rates in Preliminary Design
of Composite Skin/Stringer Debonding under Multi-Axial Loading
NASA TM-1999-209365, ARL-TR-2012, July 1999.
R. Krueger, M.K. Cvitkovich, T.K. O'Brien, and P.J. Minguet.
Testing
and Analysis of Composite Skin/Stringer Debonding Under Multi-Axial Loading.
NASA TM-209097, ARL-MR-439, February 1999
M.K. Cvitkovich, R. Krueger, T.K. O'Brien, and P.J. Minguet.
Debonding
in Composite Skin/Stringer Configurations Under Multi-Axial Loading.
Proceedings of the 13th Annual Technical Conference on Composite Materials,
American Society for Composites, Baltimore, ISBN 0-9667220-0-0 (CD-ROM),
1998, pp. 1014-1048.
S. Weihe, S. Rinderknecht, R. Krüger, and B. Kröplin.
Simulation of
fracture and delamination propagation in fibre reinforced materials.
Zeitschrift für Angewandte Mathematik und Mechanik, vol. 78, pp. S73-S76, 1998.
M. König, R. Krüger.
Delamination
Growth under Cyclic Loading.
ECCM-8, European Conference on Composite Materials, Volume 4, Woodhead
Publishing Ltd., 1998, pp. 479-486.
M. König, R. Krüger, K. Kussmaul, M. von Alberti and M.
Gädke.
Characterizing
Static and Fatigue Interlaminar Fracture Behaviour of a First Generation
Graphite/Epoxy Composite.
Composite Materials: Testing and Design - (13th Vol.), ASTM STP 1242,
S.J. Hooper, Ed., American Society for Testing and Materials, 1997, pp.
60-81.
R. Krüger and M. König.
Prediction
of Delamination Growth Under Cyclic Loading.
Composite Materials: Fatigue and Fracture (Sixth Volume), ASTM STP
1285, E.A. Armanios, Ed., American Society for Testing and Materials, 1997,
pp. 162-178.
M. König und R. Krüger.
Delaminationswachstum in CFK-Laminaten
In F. Aldinger and H. Mughrabi, Herausgeber, Werkstoffwoche '96, Symposium
7, Materialwissenschaftliche Grundlagen, pp. 945-950. DGM-Informationsgesellschaft
mbH, 1997. ISBN 3-8835-235-6.
M. König and R. Krüger
Delamination
Growth in CFRP-Laminates Under Fatigue Loading.
International Conference on Fatigue of Composites, S. Degallaix, C.
Bathias and R. Fougeres, eds., Societe Francaise de Metallurgie et de Materiaux
, pp. 299-306, 1997.
R. Krüger, M. König and B. Kröplin
Delamination
Growth in CFRP-Laminates: Development of a predictive tool based on computational
fracture mechanics.
AIAA-97-1130-CP. In The 38th AIAA/ASME/ASCE/AHS/ASC SSDM Conference,
Kissimmee, FL, pp. 2064--2072, 1997.
M. König, R. Krüger and H. Parisch
A Finite
Element Approach for Predicting Delamination Growth
In Proceedings of NAFEMS World Congress '97 - Stuttgart, pp. 136-147,
NAFEMS , 1997.
M. König and R. Krüger
Analytical
and Numerical Analysis of a Specimen Containing a Delamination Caused by
a Ply Cut.
ISD-Report No. 97/2, Institute for Statics and Dynamics of Aerospace
Structures, University of Stuttgart, 1997.
R. Krüger, S. Rinderknecht and M. König
Two- and Three- Dimensional Finite
Element Analysis of Crack Fronts in a Multidirectional Composite ENF Specimen
ISD-Report No. 97/1, Institute for Statics and Dynamics of Aerospace
Structures, University of Stuttgart, 1997.
R. Krüger
Delaminationswachstum
in Faserverbundlaminaten - Entwicklung eines auf bruchmechanischen Ansätzen
basierenden Berechnungsverfahrens, Dissertation, ISD, Universität
Stuttgart, Bericht aus dem Institut 13-96, ISBN 3-930683-15-6, 1996.
R. Krüger and M. König
Investigation
of Delamination Growth Between Plies of Dissimilar Orientations.
ISD-Report No. 96/5, Institute for Statics und Dynamics of Aerospace
Structures, University of Stuttgart, 1996.
R. Krüger, C. Hänsel and M. König
Experimental-Numerical
Investigation of Delamination Buckling and Growth.
ISD-Report No. 96/3, Institute for Statics und Dynamics of Aerospace
Structures, University of Stuttgart, 1996.
B.D. Davidson, R. Krüger and M. König.
Effect
of Stacking Sequence on Energy Release Rate Distributions in Multidirectional
DCB and ENF Specimens.
Engineering Fracture Mechanics, Vol. 55, No. 4, pages 557--569, 1996.
Also appears as Syracuse University Technical Report No. MAME-95-101,
1995.
R. Krüger, M. König and C. Hänsel.
Investigating Delamination Buckling and Growth: An Approach Based on
Structural Analysis and Testing
In International Conference on Composites Engineering, David Hui Ed.,
ICCE/3, New Orleans, pages 469--470, 1996.
M. König, R. Krüger, and M. Gädke.
Prediction
of Delamination Growth Under Cyclic Loading Using Fracture Mechanics.
Progress in Durability Analysis of Composite Systems, Proceedings of
the international conference DURACOSYS 95, Brussels.
ISBN 90-5410-809-6, A.A. Balkema Publishers, pp. 45-52, 1996.
R. Krüger, S. Rinderknecht, C. Hänsel and M. König.
Computational
Structural Analysis and Testing: An Approach to Understand Delamination
Growth.
Fracture of Composites, E. A. Armanios Ed., Key Engineering Materials,
Vols. 120-121, pp. 181-202, Trans Tech Publications, 1996.
R. Krüger and M. König
Two- and
Three-Dimensional Finite Element Analysis of a Specimen Containing a Rectangular
Artificial Delamination and Additional Ply Cut
ISD-Report No. 95/11, Institute for Statics und Dynamics of Aerospace
Structures, University of Stuttgart, 1995.
B.D. Davidson, R. Krüger and M. König.
Three Dimensional
Analysis and Resulting Design Recommendations for Unidirectional and Multidirectional
End- Notched Flexure Tests.
Journal of Composite Materials, Vol. 29, No. 16, pages 2108--2133,
1995.
Also appears as Syracuse University Technical Report No. MAME-94-401,
1994.
B.D. Davidson, R. Krüger and M. König.
Three Dimensional
Analysis of Center Delaminated Unidirectional and Multidirectional Single
Leg Bending Specimens.
Composites Science and Technology, Vol. 54, No. 4, pages 385--394,
1995.
Also appears as: Syracuse University Technical Report No. MAME-94-901,
1994.
R. Krüger, M. König and M. Gädke.
Predicting
Delamination Growth under Cyclic Loading: An Approach Using Computational
Structural Analysis and Testing.
In The Tenth International Conference on Composite Materials, Vol.
I,
A. Poursartip and K. Street, editors, ISBN 1-85573-222-1, Woodhead
Publishing Ltd, pages 269-276, 1995.
M. König, R. Krüger and S. Rinderknecht.
Numerical
Simulation of Delamination Buckling and Growth.
In The Tenth International Conference on Composite Materials, Vol.
I,
A. Poursartip and K. Street, editors, ISBN 1-85573-222-1, Woodhead
Publishing Ltd, pages 561-568, 1995.
M. König and R. Krüger
Computation
of Energy Release Rates: A Tool for Predicting Delamination Growth in Carbon
Fibre Reinforced Epoxy Laminates.
Computational Plasticity. - Fundamentals and Applications - Proceedings
of 4th International Conference, Barcelona, E. Onate, D.R.J Owen and E.
Hinton, editors, ISBN 0-906674-85-9. Pineridge Press, pages 1167--1178,
1995.
M. König und R. Krüger
Bruchmechanik
des Delaminationswachstums in zyklisch belasteten CFK-Laminaten
In 27. Vortragsveranstaltung des DVM-Arbeitskreises Bruchvorgänge,
Köln. Deutscher Verband für Materialforschung und -prüfung
e.V., Seiten 29-38, 1995.
H. Eggers, R. Krüger and M. König
Test and
Calibration of the Special Beam Lattice Model.
ISD-Report No. 94/8, Institute for Statics und Dynamics of Aerospace
Structures, University of Stuttgart, 1994.
B. Kröplin, U. Hänle und R. Krüger
Strukturkonzepte.
In Space Course 1995, Lehrgang ¨ber Raumtransportsysteme,
D. Dinkler und E. Messerschmid (Herausgeber), ISBN 3-930683-03-2.
Institut für Statik und Dynamik der Luft- und Raumfahrtkonstruktionen,
Universität Stuttgart, Seiten 231-249, 1995.
M. König und R. Krüger
Bruchmechaniche
Modellierung von Faserverbund-Laminaten.
In Space Course 1995, Lehrgang ¨ber Raumtransportsysteme,
D. Dinkler und E. Messerschmid (Herausgeber), ISBN 3-930683-03-2.
Institut für Statik und Dynamik der Luft- und Raumfahrtkonstruktionen,
Universität Stuttgart, Seiten 397-414, 1995.
J. Albinger, C. Hänsel, M. König, R. Krüger, H. Parisch
und S. Rinderknecht.
Ein kombiniertes
experimentelles und numerisches Verfahren zur Bestimmung der Energiefreisetzungsraten
beim Delaminationsfortschritt in CFK.
In: Numerische und experimentelle Methoden in der Statik und Dynamik,
D. Dinkler und U. Hänle (Herausgeber), ISBN 3-930683-00-8.
Institut für Statik und Dynamik der Luft- und Raumfahrtkonstruktionen,
Universität Stuttgart, Seiten 265-289, 1994.
R. Krüger and M. König.
Computation of Energy Release Rates: A Tool for Predicting Delamination
Growth Under Cyclic Loading ?
In International Conference on Composites Engineering, David Hui Ed.,
ICCE/1, New Orleans, pages 805--806, 1994.
R. Krüger.
Three Dimensional
Finite Element Analysis of Multidirectional Composite DCB, SLB and ENF
Specimens.
ISD-Report No. 94/2, Institute for Statics und Dynamics of Aerospace
Structures, University of Stuttgart, 1994.
R. Krüger, M. König, J. Albinger and C. Hänsel.
Combined
Experimental- Numerical Approach for the Determination of Mixed- Mode Energy
Release Rates at Delamination Growth.
AIAA-94-1460-CP. In The 35th AIAA/ASME/ASCE/AHS/ASC SSDM Conference,
Hilton Head, SC, pages 1212--1222, 1994.
R. Krüger, M. König and T. Schneider.
Computation
of Local Energy Release Rates Along Straight and Curved Delamination Fronts
of Unidirectionally Laminated DCB- and ENF - Specimens, AIAA-93-1457-CP
.
In The 34th AIAA/ASME/ASCE/AHS/ASC SSDM Conference, La Jolla, California,
pages 1332--1342, 1993.
M. König und R. Krüger.
Örtliche
Energiefreisetzungsraten: Kriterium für den Delaminationsfortschritt
in CFK - Laminaten ?
In 25. Vortragsveranstaltung des DVM-Arbeitskreises Bruchvorgänge,
Karlsruhe, pages 505--514. Deutscher Verband fur Materialforschung und
-prüfung e.V., Februar 1993.
S. Fan, R. Krüger und M. König.
Anwendung
numerischer Methoden der Bruchmechanik auf die Delamination von CFK-Laminaten.
ISD-Report No. 92/11, Institut für Statik und Dynamik der Luft-
und Raumfahrtkonstruktioen, Universität Stuttgart, 1992.
R. Krüger.
Computation of Local Energy Release Rates Along Straight and Curved
Delamination Fronts in CFRE - Laminates.
2nd Workshop on FE-Modelling of the Mechanical Behaviour of Materials,
Max-Planck-Institute, Stuttgart, October 26-27 1992.
R. Krüger.
Berechnung lokaler Energiefreisetzungsraten entlang gerader und gekrümmter
Rißfronten unidirektional verstärkter DCB - und ENF - Proben.
5. Workshop Composite Forschung in der Mechanik, Paderborn, 21.-22.
Oktober 1992.
R. Krüger und T. Schneider.
Berechnung
der Energiefreisetzungsraten bei der Delamination kohlenstoffaserverstärkter
Kunststoffe mit der Methode der Finiten Elemente.
In DGLR-Jahrbuch II, Deutscher Luft- und Raumfahrtkongress, Bremen
, pages 953--962, 1992. GW ISSN 0070-4083.
M. König and R. Krüger.
Delamination fracture mechanics of CFRP laminates.
Int. Workshop on Finite Element Modelling of the Mechanical Behaviour
of Materials, Max Planck Institut für Metallforschung, Stuttgart,
October 22, 1991.
R. Krüger.
Analyse von Problemen bei der strukturellen Auslegung von Wasserstofftanks
für hypersonische Flugzeuge.
(Analysis
of problems concerning the structural layout of hydrogen tanks for hypersonic
aircraft).
Diploma Thesis, Institute for Airplane Design, University of Stuttgart,
1989.
R. Krüger.
Berechnung der Eigenschwingungsfrequenzen von Hülsen für
große Papierrollen im Tiefdruck.
(Computation
of eigenfrequencies of cardbord cores for large paper rolls in itaglio
printing)
Research Thesis, Institute for Computer Applications, University of
Stuttgart, 1987.
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