In-plane and through-thickness properties, failure modes, damage and delamination in 3D woven carbon fibre composites subjected to impact loading

Gerlach, R.; Siviour, Clive R.; Wiegand, Jens; Petrinić, Nik

doi:10.1016/j.compscitech.2011.11.032

Cited by 136 publications

(82 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The application of XCT to characterize processing defects and damage micromechanisms in 2D composites is relatively new [10][11][12][13][14] and it has demonstrated its potential to ascertain the beneficial effect of glass fiber hybridization on the energy absorption capability of the 2D woven carbon fiber/epoxy laminates [15]. Moreover, XCT was recently applied to 3D composites [16,17] and, in particular, Gerlach et al [17] used a combination of optical 3D microscopy, ultrasound and low resolution XCT to find out the influence of the z-yarn volume fraction in the delamination resistance.…”

Section: Introductionmentioning

confidence: 99%

X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact

Seltzer

González

Muñoz

et al. 2013

Composites Part A: Applied Science and Manufacturing

130

View full text Add to dashboard Cite

ABSTRACT3D woven composites reinforced with either S2 glass, carbon or a hybrid combination of both and containing either polyethylene or carbon z-yarns were tested under low-velocity impact. Different impact energies (in the range of 21-316 J) were used and the mechanical response (in terms of the impact strength and energy dissipated) was compared with that measured in high-performance, albeit standard, 2D laminates. It was found that the impact strength in both 2D and 3D materials was mainly dependent on the in-plane fiber fracture. Conversely, the energy absorption capability was primarily influenced by the presence of z-yarns, having the 3D composites dissipated over twice the energy than the 2D laminates, irrespective of their individual characteristics (fiber type, compaction degree, porosity, etc.). X-ray microtomography revealed that this improvement was due to the z-yarns, which delayed delamination and maintained the structural integrity of the laminate, promoting energy dissipation by tow splitting, intensive fiber breakage under the tup and formation of a plug by out-of-plane shear.

show abstract

Section: Introductionmentioning

confidence: 99%

X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact

Seltzer

González

Muñoz

et al. 2013

Composites Part A: Applied Science and Manufacturing

130

View full text Add to dashboard Cite

show abstract

“…Nevertheless, except for Refs. [8,11,12,[26][27][28], their dynamic through-thickness stress-strain behavior has not been well investigated. This is because the through-thickness properties of composite materials are typically lower than their in-plane ones.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is required to characterize the dynamic behavior of composite materials. To date, the in-plane compressive [1][2][3][4][5][6][7][8][9][10][11][12], tensile [13][14][15][16][17][18] and interlaminar shear [19][20][21][22][23][24] properties of composite materials under dynamic loading have been determined with the conventional [25] or modified split Hopkinson pressure bar (SHPB). Nevertheless, except for Refs.…”

Section: Introductionmentioning

confidence: 99%

Dynamic tensile stress–strain characteristics of carbon/epoxy laminated composites in through-thickness direction

Nakai

Yokoyama

2015

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. The effect of strain rate up to approximatelyε = 10 2 /s on the tensile stress-strain properties of unidirectional and cross-ply carbon/epoxy laminated composites in the through-thickness direction is investigated. Waisted cylindrical specimens machined out of the laminated composites in the through-thickness direction are used in both static and dynamic tests. The dynamic tensile stress-strain curves up to fracture are determined using the split Hopkinson bar (SHB). The low and intermediate strain-rate tensile stress-strain relations up to fracture are measured on an Instron 5500R testing machine. It is demonstrated that the ultimate tensile strength and absorbed energy up to fracture increase significantly, while the fracture strain decreases slightly with increasing strain rate. Macro-and micro-scopic examinations reveal a marked difference in the fracture surfaces between the static and dynamic tension specimens.

show abstract

“…Various mounting method have been used for flat specimens: adhesively bonded end caps [3], form-fit grips [5], bolted (dowel-pin) [4] specimen into bars and clamping the specimen. Clamping can be based on the inertia of the clamps at dynamic experiments or based on mechanical force and friction.…”

Section: Specimen Mountingmentioning

confidence: 99%

“…An alternative approach is to adhesively bond a e-mail: noah.ledford@emi.fraunhofer.de b e-mail: hanna.paul@emi.fraunhofer.de c e-mail: georg.ganzenmueller@emi.fraunhofer.de d e-mail: michael.may@emi.fraunhofer.de e e-mail: M.Hoefemann@sz.szmf.de f e-mail: M.Otto@sz.szmf.de g e-mail: nikica.petrinic@emi.fraunhofer.de threaded metalic endcaps on both ends of the specimen and subsequently screw the specimen and the endcaps into the bars. If the adhesion between end caps and specimen is not sufficient, additional clamping mechanisms can be used [3]. Another way is to use specimens with holes and screws to fix them in the bar [4].…”

Section: Introductionmentioning

confidence: 99%

Investigations on specimen design and mounting for Split Hopkinson Tension Bar (SHTB) experiments

Paul

Ganzenmüller

May

et al. 2015

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. Split Hopkinson Tension Bar (SHTB) experiments can be used to test the material behavior with high strain rates in tension loading. The influence of the specimen mounting and the specimen design on the test results was investigated. Three mounting methods were tested. The best signal is achieve using a mounting based on form fit. The three tested specimen designs all lead to a valid fracture behavior, but result in a different local strain rate.

show abstract

In-plane and through-thickness properties, failure modes, damage and delamination in 3D woven carbon fibre composites subjected to impact loading

Cited by 136 publications

References 64 publications

X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact

X-ray microtomography analysis of the damage micromechanisms in 3D woven composites under low-velocity impact

Dynamic tensile stress–strain characteristics of carbon/epoxy laminated composites in through-thickness direction

Investigations on specimen design and mounting for Split Hopkinson Tension Bar (SHTB) experiments

Contact Info

Product

Resources

About