A stiffness volume averaging based approach to model non-crimp fabric reinforced composites

Petriccione, Angelo; Annicchiarico, Daniele; Antonucci, Vincenza; Giordano, M.; Riccio, Aniello; Scaramuzzino, F.; Zarrelli, Mauro

doi:10.1016/j.compscitech.2011.11.026

Cited by 14 publications

(11 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the case of composite laminates, where the in-plane dimensions exceed the length scale at which delamination, matrix cracking and fibre debonding take place by one to several orders of magnitude, the proper definition of the modelling scale has particular importance [46]. An RVE can be defined as the smallest volume fraction of the material whose properties are representative of the global mechanical performance of the ma-terial system [52,53]. Therefore, an important issue when using computational micro-mechanics is the minimum size of the RVE.…”

Section: Introductionmentioning

confidence: 99%

Micro-mechanical analysis of the in situ effect in polymer composite laminates

Arteiro

Catalanotti

Melro

et al. 2014

Composite Structures

145

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Micro-mechanical analysis of the in situ effect in polymer composite laminates

Arteiro

Catalanotti

Melro

et al. 2014

Composite Structures

145

View full text Add to dashboard Cite

show abstract

“…For each ply, the machine accurately places the tows on the mold with the proper angles. The part is then placed in an autoclave to realize the cross-linking reaction of polymer materials for curing the plies [9,10,11]. AFP is suitable for parts that vary greatly in aspect of appearance and size [12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Effect of Internal Defects on Stress Waves during Automated Fiber Placement

Han

Sun

et al. 2018

Polymers

View full text Add to dashboard Cite

The detection technique of component defects is currently only realized to detect offline defects and online surface defects during automated fiber placement (AFP). The characteristics of stress waves can be effectively applied to identify and detect internal defects in material structure. However, the correlation mechanism between stress waves and internal defects remains unclear during the AFP process. This paper proposes a novel experimental method to test stress waves, where continuous loading induced by process itself is used as an excitation source without other external excitation. Twenty-seven groups of thermosetting prepreg laminates under different processing parameters are manufactured to obtain different void content. In order to quantitatively estimate the void content in the prepreg structure, the relation model between the void content and ultrasonic attenuation coefficient is revealed using an A-scan ultrasonic flaw detector and photographic methods by optical microscope. Furthermore, the high-frequency noises of stress waves are removed using Haar wavelet transform. The peaks, the Manhattan distance and mean stress during the laying process are analyzed and evaluated. Partial conclusions in this paper could provide theoretical support for online real-time detection of internal defects based on stress wave characteristics.

show abstract

“…Petriccione et al. [16] developed a stiffness averaging based model to evaluate the mechanical performance of NCF composites.…”

Section: Introductionmentioning

confidence: 99%

“…Riccio et al [12] presented a novel finite-element tool (based on the stiffness averaging method on the modified virtual crack closure technique and on the penalty method) for the simulation of the mechanical behavior, including delamination growth, of NCF composites. Petriccione et al [16] developed a stiffness averaging based model to evaluate the mechanical performance of NCF composites.…”

Section: Introductionmentioning

confidence: 99%

“…NCF composites are primarily used in aerospace and automotive sectors. Despite the low manufacturing costs, processing advantages, and final mechanical performances, NCF usage is still limited for aeronautics and space applications due to degraded in-plane tension and compression performance caused by the presence of the crimp threads [16] and formation of resin-filled pockets after infusion [15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural design of face fabrics and the core as a premise for compression behavior of 3D woven sandwich fabric

Mihailović

Asanovic

Cerović

2016

Jnl of Sandwich Structures & Materials

View full text Add to dashboard Cite

In this work, an experimental study on compression properties of two E-glass 3D woven fabrics, known as integrally woven sandwich fabrics, has been presented. Compression properties of 2D face fabrics and the core, as structural parts of integrally woven sandwich fabric, have also been investigated. Compression behavior of the samples (compressibility, compression work, and compressive resilience) was analyzed from the aspect of the weave design of face fabrics and the core structure (shape and density of the pile yarns). Results of the investigation showed that “8” shaped core structure, the greater surface density of the pile yarns, and the less compact structure of face fabrics ensure better compression properties of 3D fabrics. Specific weave design of face fabrics and the structure of the core significantly influence the behavior of 3D fabrics during successive increases, followed by a gradual decrease of pressure. During the loading of 3D woven structures, three regions of curves can clearly be seen compared to two regions which are registered at 2D face fabrics. Concerning 3D woven fabrics, the first region represents compression of the core, the second region is prolonged core compression and the third region refers to the simultaneous compression of pile yarns in the core and face fabrics. The density of pile yarns plays an important role in the region 1. In region 2, both the shape and density of the pile yarns are significant. Influence of the weave of face fabrics on compression behavior of 3D fabric can be noticed to a lesser extent in the region 2 and, especially in the region 3, where highly packed yarns assemblies are created.

show abstract

A stiffness volume averaging based approach to model non-crimp fabric reinforced composites

Cited by 14 publications

References 19 publications

Micro-mechanical analysis of the in situ effect in polymer composite laminates

Micro-mechanical analysis of the in situ effect in polymer composite laminates

Experimental Study of the Effect of Internal Defects on Stress Waves during Automated Fiber Placement

Structural design of face fabrics and the core as a premise for compression behavior of 3D woven sandwich fabric

Contact Info

Product

Resources

About