journal article·2016-09

The effect of fiber waviness on the fatigue life of CFRP materials

Susanne Hörrmann, Adi Adumitroaie, Christoph Viechtbauer, Martin Schagerl

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Abstract

Abstract For carbon fiber reinforced polymer parts featuring manufacturing defects the balance between safety and cost has to be maintained. In this work, a non-crimp fabric with induced out-of-plane fiber waviness, which is a common defect, is investigated. Thereby its effect on the fatigue life under axial loading is assessed experimentally and numerically. For a profound understanding of damage initiation and progression, different damage modes are investigated up to final failure. A geometry based defect metric is established and the influence of this metric on the compression fatigue life of the considered material is quantitatively assessed, such that the proposed metric can be used for defining acceptance/rejection criteria for composite parts containing this specific defect.
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Research context

OpenAlex topics: Mechanical Behavior of Composites · Fiber-reinforced polymer composites · Natural Fiber Reinforced Composites

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References (20)

Show source-provided references
1. Brückner · 2011
2. Potter K. Understanding the origins of defects and variability in composites manufacture. In: International conference on composite materials (ICCM)-17, Edinburgh, UK; 2009.
3. Variability, fibre waviness and misalignment in the determination of the properties of composite materials and structures10.1016/j.compositesa.2008.04.016 ↗
4. Compressive failure of laminates containing an embedded wrinkle; experimental and numerical study10.1016/j.compositesa.2015.03.012 ↗
5. Davidson P, Waas AM, Yerramalli CS, Chandraseker K, Faidi W. Effect of fiber waviness on the compressive strength of unidirectional carbon fiber composites. In: 53rd AIAA/ASME/ASCE/AHS/ASC structures, structural dynamics and materials conference, AIAA 2012-1612, Honolulu, Hawaii; 2012.10.2514/6.2012-1422 ↗
6. Influence of ply waviness on the stiffness and strength reduction on composite laminates10.1177/089270579200500405 ↗
7. Effects of layer waviness on the compression response of laminates
8. Mandell J, Samborsky D, Wang L. Effects of fiber waviness on composites for wind turbine blades. In: International SAMPE symposium and exhibition, SAMPE; 1999, 2003. p. 2653–66.
9. Fatigue failure of sandwich beams with face sheet wrinkle defects10.1016/j.compscitech.2012.06.001 ↗
10. Experimental investigation and characterisation techniques of compressive fatigue failure of composites with fibre waviness at ply drops10.1016/j.compstruct.2013.01.010 ↗
11. Hörrmann S, Viechtbauer C, Adumitroaie A, Schagerl M. The effect of fiber waviness as manufacturing defect on the fatigue life of CFRP materials. In: ICCM20, Copenhagen, Denmark; 2015.10.1016/j.ijfatigue.2016.04.029 ↗
12. ASTM D3410, standard test method for compressive properties of polymer matrix composite materials with unsupported gage section by shear loading. ASTM international; 2008. doi:http://dx.doi.org/10.1520/D3410_D3410M-16.10.1520/D3410_D3410M-16 ↗
13. Specimen preparation
14. Fractography of compression failed carbon fiber reinforced plastic composite laminates
15. Compression strength reductions in composite laminates due to multiple-layer waviness10.1016/0266-3538(95)00020-8 ↗
16. A mechanistic approach to the properties of stitched laminates10.1016/S1359-835X(99)00056-1 ↗
17. Compressive failure of fiber composites
18. Stiffness degradation under fatigue in multiaxially loaded non-crimped-fabrics10.1016/j.ijfatigue.2009.02.002 ↗
19. A progressive damage mechanics algorithm for life prediction of composite materials under cyclic complex stress
20. Compression–compression fatigue of 3d woven composites10.1016/0956-7151(95)00137-K ↗