Determination of the crack resistance curve for intralaminar fiber tensile failure mode in polymer composites under high rate loading

Kühn, Peter; Catalanotti, G.; Xavier, José; Ploeckl, Marina; Koêrber, H.

doi:10.1016/j.compstruct.2018.07.039

Cited by 30 publications

(25 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observed strain rate dependency of the fracture toughness of the investigated UD glass-epoxy composite is more pronounced that for the UD carbon-epoxy recently investigated by the authors in [1] and [2], in particular for fiber tensile failure.…”

Section: Resultsmentioning

confidence: 44%

“…Using the DENC and DENT specimen geometry together with the size effect law, dynamic fracture toughness and R-curves for the fiber compression and fiber tension failure modes, were recently obtained for the unidirectional carbon-epoxy composite IM7-8552 by Kuhn et al [1], [2]. For the investigated carbon-epoxy composite, a significant strain rate effect was found for the fiber compression fracture toughness, while a comparable small increase with increasing strain rate was found for fiber tension failure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Intralaminar fracture toughness of UD glass fiber composite under high rate fiber tension and fiber compression loading

et al. 2018

View full text Add to dashboard Cite

Automotive and aeronautical composite structures can be subjected to dynamic loading scenarios (e.g. crash, bird strike). In both industrial areas, energy-based damage models for composite materials, able to predict initiation and evolution of damage of a composite ply under various loading conditions, are increasingly used. These models require the specification of fracture toughness parameters for the main failure modes. In previous works [1],[2], the authors have successfully enhanced a methodology suggested by Catalanotti et al. [3],[4] to measure the fiber failure crack resistance curves of a UD carbon fiber composite under dynamic loading. This methodology uses the relation between the energy release rate, the crack resistance curve and the size-effect law. For the determination of the size-effect law, double-edge-notched specimens of different sizes are tested. In this work, the developed approach is used for the measurement of the fracture toughness for fiber tension and compression failure of a UD glass-epoxy composite under high rate loading. Static tests are performed on an electromechanical test machine. For the high rate tests, split-Hopkinson bars for tensile (SHTB) and compressive (SHPB) loading are used. The results show, that the fracture toughness of the UD glass-epoxy composite, associated with the fiber failure modes, increases with increasing loading rate for tension as well as for compression. The observed strain rate effect on the fracture toughness of the glass-epoxy composite is more pronounced than for the carbon-epoxy composite investigated in [1],[2], in particular for fiber tensile failure.

show abstract

Section: Resultsmentioning

confidence: 44%

Section: Introductionmentioning

confidence: 99%

Intralaminar fracture toughness of UD glass fiber composite under high rate fiber tension and fiber compression loading

et al. 2018

View full text Add to dashboard Cite

show abstract

“…However, tensile loads can be applied along the fibre direction and also transversal to the direction of the fibres. To fully understand the mechanism, the test like in [49] and [50] still needs to be performed in order to clarify and describe the failure mechanics according to initial conditions and materials, although on micro level the prediction of the failure can be modelled using the numerical and finite element methods described in [51] and [52].…”

Section: Tensile Failurementioning

confidence: 99%

Composite Material Damage Processes

Bolf

Zamarin

Basan

2020

JMTS

View full text Add to dashboard Cite

Composite materials are in use in the shipbuilding industry for a long period of time. Composites appear in vast number of fibre – matrix combinations and can be produced with several different production processes. Due to the specific nature of the composite material structure, the selection of the production process and the limitations in the quality control procedures, composite materials will always be subject to defects and imperfections which may, under certain circumstances, lead to the appearance and propagation of cracks. The size and the shape of the crack, the load type and the stress field in the material surrounding the crack will be crucial for crack growth and crack propagation. This paper reviews the composite material damage processes especially relevant for shipbuilding. The basic principles of composite material fracture mechanics are briefly explained, and finally, mechanisms responsible for the development of damage and fracture of composite materials are presented. This paper has emerged from the need to summarize information about composite material fracture and failure mechanisms and modes relevant for the shipbuilding industry.

show abstract

“…The impact of FFOTs in providing kinematic measurements across a whole region of interest has brought novel insights into different applied scientific areas. Among others, one may underline the measurement of gradient fields [ 14 , 15 , 16 ], fracture cracking evaluation [ 17 , 18 , 19 , 20 , 21 ], image-based approaches of high-strain rate dynamical behaviour of materials [ 22 , 23 , 24 , 25 , 26 ], numerical modelling validation from image-based measurements [ 27 , 28 , 29 ] and inverse material parameter identification from heterogeneous tests [ 30 , 31 , 32 , 33 ]. Advanced monitoring techniques have also been applied with the AM process in order to enhance the technology.…”

Section: Introductionmentioning

confidence: 99%

In Situ Monitoring of Additive Manufacturing Using Digital Image Correlation: A Review

2021

View full text Add to dashboard Cite

This paper is a critical review of in situ full-field measurements provided by digital image correlation (DIC) for inspecting and enhancing additive manufacturing (AM) processes. The principle of DIC is firstly recalled and its applicability during different AM processes systematically addressed. Relevant customisations of DIC in AM processes are highlighted regarding optical system, lighting and speckled pattern procedures. A perspective is given in view of the impact of in situ monitoring regarding AM processes based on target subjects concerning defect characterisation, evaluation of residual stresses, geometric distortions, strain measurements, numerical modelling validation and material characterisation. Finally, a case study on in situ measurements with DIC for wire and arc additive manufacturing (WAAM) is presented emphasizing opportunities, challenges and solutions.

show abstract

Determination of the crack resistance curve for intralaminar fiber tensile failure mode in polymer composites under high rate loading

Cited by 30 publications

References 53 publications

Intralaminar fracture toughness of UD glass fiber composite under high rate fiber tension and fiber compression loading

Intralaminar fracture toughness of UD glass fiber composite under high rate fiber tension and fiber compression loading

Composite Material Damage Processes

In Situ Monitoring of Additive Manufacturing Using Digital Image Correlation: A Review

Contact Info

Product

Resources

About