Tensile Testing of Hybrid Composite Joints

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The ever-increasing need for eco-compatibility in all sectors of industry is pushing scientific research to look for the so-called environmentally friendly materials characterized by minimal environmental impact during the manufacturing process and high recyclability. In the aeronautical sector composites are well established for primary and secondary structures, but alternative biocompatible solutions are found out even if great efforts are being required to improve their properties. In this work, the mechanical behavior of a biocomposite material is tested by implementing it in an existing numerical model of a fuselage section subject to a vertical drop test. Deformations and failures of biocomposite parts are evaluated providing indications on their possible compliance with crashworthiness and airworthiness requirements.

Section: Fuselage Section Overviewmentioning

confidence: 99%

Evaluation of the Mechanical Behavior of a Biocomposite Material in a Fuselage Section Numerical Drop Test

Manzo

Perfetto

Lamanna

et al. 2020

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“…Adhesive bonding as joining method is becoming more and more popular for civil, naval and industrial engineering structural applications. [1][2][3][4] A reliable design of bonded structures requires the fulfilment of safety requirements related to the knowledge of their fracture behavior under different loading conditions [5][6][7][8][9][10] and of their long-term response. [11][12][13][14] In recent years, cohesive zone models (CZMs) have been extensively adopted for describing debonding and delamination phenomena.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Investigation of the Shear Fracture Behavior of Bonded Joints

Perrella

Berardi

Armentani

2021

The demand of adhesive bonding as technique for the strengthening of existing structures is currently increasing in many engineering fields. Therefore, the prediction of bonded joints fracture behavior is an open issue for the structural safety of repairs. With this aim, a cohesive zone approach is adopted to determine the shear fracture behavior of epoxy resin interface layer of end notched flexure (ENF) specimen. Experimental tangential slip displacements of adherends are evaluated by digital image correlation (DIC) analysis. The identified traction-separation law can be implemented in a finite element (FE) code to predict the decohesion of adhesively bonded joints.

“…In details, a finite element model of the bamboo main frame has been developed and validated using Abaqus commercial code following the UNI EN 14764 standard. All the model parts are connected by hybrid joints; in the present work, the analysis of such coupling has been neglected due to their high complexity such as the effects of tolerances and other geometric parameters . Numerical results have shown the compliance of the main frame with the regulations.…”

Section: Introductionmentioning

confidence: 99%

Design of a Bamboo Treadmill Bicycle Main Frame

Perfetto

Lamanna

Sepe

et al. 2020

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In the present work, a preliminary design of an eco-sustainable bamboo electric treadmill bike is carried out. It is a new means of transport with zero environmental impact that also allows to overcome the main disadvantage of the indoor training. Bamboo, as an eco-friendly material, has great potential as construction material for bike frames because it represents an alternative for more traditional materials such as steel, aluminum, and composite. A finite element model of the designed prototype is developed and then validated using Abaqus commercial code following the UNI EN 14764 static standard. Numerical analyses show good structural behavior of the designed frame in compliance with the regulations.