Buradasınız

Anasayfa » Content

STATIC AND FATIGUE CHARACTERIZATION OF NOMEX HONEYCOMB SANDWICH PANELS

Journal Name:

  • Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi

Publication Year:

  • 2013
DOI: 
10.5505/pajes.2013.07279

Key Words:

Author Name
Abstract (2. Language): 
The main benefits of using the sandwich concept in structural components are the high stiffness, good fatigue resistance and low weight ratios. Recent advances in materials and construction techniques have resulted in further improvement and increased uniformity of the sandwich composite properties. In order to use these materials in different applications, the knowledge of simply their static properties alone is not sufficient but additional information on their fatigue properties and durability are required. In this paper, first static and fatigue tests on four points bending of nomex honeycomb composite sandwich panels have been performed. Load/displacement and S-N fatigue curves are presented and analysed. Fatigue failure and damage modes are observed with an optical microscope and are discussed. The second is to address such fatigue behaviour by using a damage model and check it by experimentation. This fatigue damage model is based on stiffness degradation, which is used as a damage indicator. Two non¬ linear cumulative damage models derived from the chosen stiffness degradation equation are examined with assumption of linear Miner's damage summation. Predicted results are compared with available experimental data.
Bookmark/Search this post with
FULL TEXT (PDF): 
PDF icon arastirmax-static-and-fatigue-characterization-nomex-honeycomb-sandwich-panels.pdf
  • 7
287
292
  • English

REFERENCES

References: 

[1] J.R. Vinson, "The behaviour of sandwich structures of isotropic and composite materials", Technomic Publishing Company, 1999.
[2] S. Belouettar, A. Abbadi, Z. Azari, "Experimental Investigation of static and fatigue behaviour of composites honeycomb materials using four point bending tests", Composite Structures, Vol. 87, Issue 3, 265-273, 2009.
[3] C.A. Steeves and N.A. Fleck, "Collapse mechanisms of sandwich beams with composite faces and a foam core, loaded in three-point bending". Part I: International Journal of Mechanical Sciences, Vol. 46, 561-583, 2004.
[4] V. Crupi, G. Epasto, E. Guglielmino, "Collapse modes in aluminium honeycomb sandwich panels under bending and impact loading". International Journal of Impact Engineering , vol.43, 6-15, 2012.
[5] HA. Whitworth "A stiffness degradation model for composite laminates under fatigue loading", Composite Structure, Vol. 40, 95-101, 1997.
[6] W. Hwang, KS. Han, "Fatigue of Composites—Fatigue Modulus Concept and Life Prediction", Journal of Composite Materials March Vol. 20, 154-165, 1986.
[7] HA. Whitworth, "Evaluation of residual strength degradation in composite laminates under fatigue loading". Composite Structure, Vol. 48, 261-264, 2000.
[8] KL. Reifsnider, C. Scott and D. Jermy. "The mechanics of composite strength evaluation", Composites Science and Technology, Vol. 60, Issues 12-13, 2539-2546, 2000.
[9] A. Abbadi, B, Z. Azari, S. Belouettar, J. Gilgert, "Modelling
the fatigue behaviour of composites honeycomb Materials using four point bending tests", International Journal of Fatigue, Vol. 32, 1739-1747, 2010.
[10] Wen-Fang. Wu, LJ. Lee and ST. Choi, "A study of fatigue damage and fatigue life of composites laminates", Journal of Composite Materials, Vol. 30, 123-137, 1996.
[11] J. H. Kim, Y. Shin Lee,B. Jun Park, "Evaluation of durability and strength of stitched foam core sandwich structures", Composite Structure. Vol. 47, 543-550, 1999.
[12] RA. Shenoi, SD. Clark and HG. Allen, "Fatigue behaviour of polymer composite sandwich beams", Journal of Composite Materials, Vol. 29, 2423-2445. 1995.
[13] A. El Mahi, M. Khawar Farooq, S. Sahraoui, A. Bezazi, "Modelling the flexural behaviour of sandwich composite materials under cyclic fatigue". Materials and Design, Vol. 25, 199-208, 2004.
[14] W. Hwang, CS. Lee, HC. Park and KS. Han, "Single and multi-stress level fatigue life prediction of glass-epoxy composites", Journal of advanced materials. Vol.26, n 4,.
3-9, 1995.
[15] G. Caprino and G. Giorleo, "Fatigue lifetime of glass fabric/epoxy composites", Compos part A: Applied Science Manufacturing, Vol. 30, 299-304. 1999.
[16] S. D. Clark, R. A. Shenoi and H. G. Allen, "Modelling the fatigue behaviour of sandwich beams under monotonic, 2-step and block-loading regimes", Composites science and technology, Vol. 59, 471-486, 1999.
[17] M. Miner, "Cumulative damage in fatigue", Journal of Applied Mechanics Part A, Vol.12, 159-164, 1945.
[18] K. Azouaoui, Z. Azari, G. Pluvinage. "Evaluation of impact fatigue damage in glass/epoxy composite laminate", International Journal of Fatigue 32, 443-452, 2010.

Thank you for copying data from http://www.arastirmax.com