Investigator: prof. Ing. Ivo Dlouhý, CSc.
Number of Project: GA101/02/0683
Agency: Czech Science Foundation
Duration: 01. 01. 2002 - 31. 12. 2004

Composite materials are produced to satisfy a variety of needs in structural applications, where specific combinations of their materials properties become very attractive. In spite of an enormous research activity in the field a great number of problemsremain unresolved. With respect to the brittle matrix composites there is still a challenge to model toughening mechanisms and their synergism in an appropriate way. The purpose of the project is to provide a closely coupled theoretical and experimentalinvestigation of fracture problems in brittle matrix reinforced by ductile particles or ceramic fibres. Possible candidates are e.g. borosilicate glasses with incorporated metallic inclusions such as Mo or V and ceramics or glasses reinforced byunidirectional SiC fibres. The central emphasis will be put upon the experimental verification of various toughening models, which were suggested by applicants or are distributed in literature. Results obtained within the proposed project will suggest...

Dlouhý, I., Chlup, Z., Boccaccini, A. R.: Fracture behaviour of brittle (glass) matrix composites; Materials Science Forum, Vol. 482, 2005, pp. 115-122.

I. Dlouhý, Z. Chlup: Fracture Resistance Evaluation of Fibre Reinforced Brittle Matrix Composites; Key Engilneering Materials, Vol. 290, 2005, pp. 167-174.

M. Kotoul, A. R. Boccaccini, I. Dlouhý: Quantification of Toughness Increase Due to Metal Particles in Glass Matrix Composites; Fracture Mechanics of Ceramics. Active Materials, Nanoscale Materials, Composites, Glass, and Fundamentals; Eds. R.C. Bradt, D. Munz, M. Sakai, K.W. White; ISBN 0-387-24134-5, 2005, Springer Science+Business Media, Inc., pp. 245-261.

I. Dlouhý, Z. Chlup, A. R. Boccaccini: Lomová houževnatost a mikromechanismy lomu vláknových kompozitů s křehkou matricí; Sborník semináře Křehký lom 2004, Brno, 2004, s. 43-54.

M. Kotoul, I. Dlouhý: Metal particles constraint in glass matrix composites and its impact on fracture toughness enhancement; Materials Science and Engineering A 387-389, 2004, pp. 404-408.

M. Kotoul, I. Dlouhý, T. Vysloužil: Crack bridging and trapping in borosilicate matrix composites with distributed metal particles; The 15th European Conference of Fracture. Advanced Fracture Mechanics for Life and Safety Asessments (ECF 15), Stockholm, 2004, on CD.

I. Dlouhý, Z. Chlup, A. R. Boccaccini: Fracture resistance degradation of hybrid glass matrix composite; The 15th European Conference of Fracture. Advanced Fracture Mechanics for Life and Safety Asessments (ECF 15), Stockholm, 2004, on CD.

I. Dlouhý, Z. Chlup, A. R. Boccaccini: Fracture behaviour of brittle (glass) matrix composites; MSMF – 4, Brno, 2004 , key lecture, s. 89.

M. Kotoul, I. Dlouhý: Limited fracture toughness enhancement due to metal particles embrittlement in glass matrix composites; 9th International Conference on The Mechanical Behaviour of Materials - ICM 9, Palexpo Congress Center, Geneva, Switzerland, 2003.

M. Kotoul, A. R. Boccaccini, I. Dlouhý: Quantification of Toughness Increase Due to Metal Particles in Glass Matrix Composites; Fracture Mechanics of Ceramics 8, Houston, 2003.

I. Dlouhý: Habilitační práce: Lomové chování progresívních ocelí a keramik; 2002, Brno, s. 1-57 + přílohy.

Z. Chlup, I. Dlouhý, A. R. Boccaccini, K. K. Chawla: Fracture Behaviour of Fibre Reinforced Brittle Matrix Composites; Conf. Fracture Damage of Structural Parts, Ostrava, 2004, pp. 31-38.