Braided angle measurement technique for three-dimensional braided composite material preform using mathematical morphology and image texture

• Autorzy: Wan Z. , Li J.
• Języki publikacji: EN

Abstrakty

EN

This paper describes a new measuring algorithm for estimating the exterior average braided angle of a three-dimensional (3-D) braided composite material preform] based on image texture. In this project, an advanced filtered algorithm for an image of a 3-D braided composite material preform is developed on the basis of mathematical morphology. Median filter algorithms for mathematical morphology are applied in the system. The polar spectrum and main properties are investigated in the paper. Theory shows that a rotated texture's polar spectrum is an approximate translation of the unrotated texture's polar spectrum, and that the degree of each translation approximates to the corresponding rotation of the surface. The system was tested on both carbon and glass fibre preforms. We have obtained very encouraging experimental results, which show that the proposed method is feasible. So far, the research is a new development for measuring 3-D braided composite material preforms. The work will lay the foundation for establishing a test standard for 3-D braided composite material in China.

Słowa kluczowe

EN

mathematical morphology; composite material; median filter; texture; braided angle

PL

morfologia matematyczna; materiał kompozytowy; filtr medianowy; tekstura; kąt pleciony

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2006
• Tom: Vol. 6, no. 1
• Strony: 30--39
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Wan Z.

• Tianjin Polytechnic University (Tianjin 300160, People's Republic of China)

autor

Li J.

• Tianjin Polytechnic University (Tianjin 300160, People's Republic of China)

Bibliografia

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• 2. Gowayed,Yasser; Hwang, Jhy-Cherng; Chapman, Daryl, ‘Thermal conductivity of textile composites with arbitrary preform structures’, J. of Composites Technology & Research, 17 (1995), pp. 56-62.
• 3. Z.K. Wan, J.L.Li, ‘A Research on Surface Braiding Angle Parameter Testing and Unevenness Analysing of 3-D Braiding Composite Preform’,,J. of Textile Research. 20 (1999), pp. 363-365.
• 4. Degrieck, J and van Paepegem W, ‘Fatigue Damage Modelling of Fibre-Reinforced Composite Materials: Review’, Applied Mechanics Reviews,54 (2001),pp. 279-300.
• 5. Miravete, A., 3-D textile reinforcements for composite materials, Woodhead Publishing Limited (Spain), 1999.
• 6. Kalidindi S.R. and Abusafieh A., ‘Longitudinal and Transverse Moduli and Strengths of Low Angle 3-D Braided Composites’, Journal of Composite Materials, 30 (1996), pp. 885-905.
• 7. Chen Li, Li Jialu, ‘Yarn Architecture of 3-D Rectangular Braided Preforms’, Acta Material Compositae Sinica, 17 (2000), pp. 1-5
• 8. The appraisal report, Science & Technology Committee of Tianjin,China.2003.
• 9. A. K. Jain, Fundamentals of Digital Image Processing, Prentice-Hall Inc., Englewood Cliffs, New Jersey, 1989.
• 10. http://www.cmla.ens-cachan.fr/Utilisateurs/morel/gmChap09.pdf
• 11. http://www.cee.hw.ac.uk/texturelab/publications/phds/jerryWu/HTML_FinalVersion/chapter6.htm