A DIC-based study of flexural behaviour of roving/mat/roving pultruded composites

Orlando, G.

Risultato della ricerca: Article

21 Citazioni (Scopus)

Abstract

This paper reports a study of the flexural behaviour and resultant failure modes in E-glass/polyester pultruded composites. The digital image correlation (DIC) method is used to estimate the effect of fibre orientation on failure behaviour in thick beams, taking into account the presence of continuous filament mat layer (CFM) in the stacking sequence. In particular, the tests were carried out for specimens with off-axis angle of 0°, 7.5°, 15°, 30°, 45° and 90°.The crack initiation and the failure mechanisms depend on the mutual interaction between the stiffness properties of different areas in the stacking sequence. An influence index (I) was introduced to evaluate the magnitude of these phenomena.For small orientation angle (i.e. less than 7.5°), the failure mechanism is not influenced by the central mat layer and the crack starts from the tension region. For angles between 15° and 45°, the influence of the central mat layer is predominant and delamination occurs at the interface between the mat layer and the adjacent one. For 90° angles, the CFM layer does not influence the typical fracture mechanism and transverse matrix cracking occurs.
Lingua originaleEnglish
pagine (da-a)82-89
Numero di pagine8
RivistaComposite Structures
Volume131
Stato di pubblicazionePublished - 2015

Fingerprint

Polyesters
Correlation methods
Fiber reinforced materials
Crack initiation
Delamination
Failure modes
Stiffness
Cracks
Glass
Composite materials

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Civil and Structural Engineering

Cita questo

A DIC-based study of flexural behaviour of roving/mat/roving pultruded composites. / Orlando, G.

In: Composite Structures, Vol. 131, 2015, pag. 82-89.

Risultato della ricerca: Article

@article{565ec7222256475584b6bfa16321b00a,
title = "A DIC-based study of flexural behaviour of roving/mat/roving pultruded composites",
abstract = "This paper reports a study of the flexural behaviour and resultant failure modes in E-glass/polyester pultruded composites. The digital image correlation (DIC) method is used to estimate the effect of fibre orientation on failure behaviour in thick beams, taking into account the presence of continuous filament mat layer (CFM) in the stacking sequence. In particular, the tests were carried out for specimens with off-axis angle of 0°, 7.5°, 15°, 30°, 45° and 90°.The crack initiation and the failure mechanisms depend on the mutual interaction between the stiffness properties of different areas in the stacking sequence. An influence index (I) was introduced to evaluate the magnitude of these phenomena.For small orientation angle (i.e. less than 7.5°), the failure mechanism is not influenced by the central mat layer and the crack starts from the tension region. For angles between 15° and 45°, the influence of the central mat layer is predominant and delamination occurs at the interface between the mat layer and the adjacent one. For 90° angles, the CFM layer does not influence the typical fracture mechanism and transverse matrix cracking occurs.",
author = "{Orlando, G.} and Antonino Valenza and Vincenzo Fiore and Tommaso Scalici",
year = "2015",
language = "English",
volume = "131",
pages = "82--89",
journal = "Composite Structures",
issn = "0263-8223",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - A DIC-based study of flexural behaviour of roving/mat/roving pultruded composites

AU - Orlando, G.

AU - Valenza, Antonino

AU - Fiore, Vincenzo

AU - Scalici, Tommaso

PY - 2015

Y1 - 2015

N2 - This paper reports a study of the flexural behaviour and resultant failure modes in E-glass/polyester pultruded composites. The digital image correlation (DIC) method is used to estimate the effect of fibre orientation on failure behaviour in thick beams, taking into account the presence of continuous filament mat layer (CFM) in the stacking sequence. In particular, the tests were carried out for specimens with off-axis angle of 0°, 7.5°, 15°, 30°, 45° and 90°.The crack initiation and the failure mechanisms depend on the mutual interaction between the stiffness properties of different areas in the stacking sequence. An influence index (I) was introduced to evaluate the magnitude of these phenomena.For small orientation angle (i.e. less than 7.5°), the failure mechanism is not influenced by the central mat layer and the crack starts from the tension region. For angles between 15° and 45°, the influence of the central mat layer is predominant and delamination occurs at the interface between the mat layer and the adjacent one. For 90° angles, the CFM layer does not influence the typical fracture mechanism and transverse matrix cracking occurs.

AB - This paper reports a study of the flexural behaviour and resultant failure modes in E-glass/polyester pultruded composites. The digital image correlation (DIC) method is used to estimate the effect of fibre orientation on failure behaviour in thick beams, taking into account the presence of continuous filament mat layer (CFM) in the stacking sequence. In particular, the tests were carried out for specimens with off-axis angle of 0°, 7.5°, 15°, 30°, 45° and 90°.The crack initiation and the failure mechanisms depend on the mutual interaction between the stiffness properties of different areas in the stacking sequence. An influence index (I) was introduced to evaluate the magnitude of these phenomena.For small orientation angle (i.e. less than 7.5°), the failure mechanism is not influenced by the central mat layer and the crack starts from the tension region. For angles between 15° and 45°, the influence of the central mat layer is predominant and delamination occurs at the interface between the mat layer and the adjacent one. For 90° angles, the CFM layer does not influence the typical fracture mechanism and transverse matrix cracking occurs.

UR - http://hdl.handle.net/10447/149649

UR - http://www.elsevier.com/inca/publications/store/4/0/5/9/2/8

M3 - Article

VL - 131

SP - 82

EP - 89

JO - Composite Structures

JF - Composite Structures

SN - 0263-8223

ER -