Claudio Scarponi

Claudio Scarponi
Sapienza University of Rome | la sapienza · Department of Mechanical and Aerospace Engineering

Master degree in Mechanical Engineering

About

38
Publications
7,062
Reads
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734
Citations
Additional affiliations
January 1986 - April 2016
Sapienza University of Rome
Position
  • Assistant professor and then Professor in Aerospace Technologies and Aeronautical Systems

Publications

Publications (38)
Article
Full-text available
Glass Fibre Reinforced Polymer (GRFP) composites are increasingly being used as new materials for civil and petrochemical engineering infrastructures, owing to the combination of relatively high specific strength and stiffness and cost-competitiveness over traditional materials. However, practical concerns remain on the environmental stability of t...
Article
The unremitting quest of natural and renewable materials able to replace their synthetic counterparts in high-performance applications has involved also sandwich structures. In this regard, the aim of this work is to characterize the impact response, in both high- and low-velocity conditions, of green sandwich structures made of agglomerated cork a...
Chapter
Carbon–carbon composites are a family of advanced composite materials. They are the most advanced form of carbon-based materials, consisting of fibres based on carbon precursors and carbon nanotubes embedded in a carbon matrix. The chapter will describe the main characteristics, processes, properties and applications of carbon–carbon composites.
Article
Full-text available
Synthetic fibre-synthetic foam core sandwich composites are widely used for many structural applications due to their superior mechanical performance and low weight but the limited end of life disposal options and environmentally friendly character are currently envisaged as barriers to their continued development. The objective of this article is...
Article
This work addresses the damage resistance and post-impact damage tolerance of hemp fabric reinforced bio-based epoxy composites subjected to low-velocity impact at energies ranging from the barely visible impact damage (BVID) threshold up to perforation. A comparison is also reported with similar composites in terms of thickness and fibre volume fr...
Article
Abstract The present study focuses on the design of a Naca cowling of an acrobatic ultra-light airplane, where the traditional woven glass/epoxy laminate utilized for the production has been replaced by woven hemp reinforced epoxy composite. Specialized software (Fluent and ANSYS) was used for configuration, design and analysis. The results showed...
Article
Voids in composites have been a perennial problem, since the amount of porosities is deemed to bear a strong relation with the degradation of service performance of laminates. On the other side, the effect of porosity on impact resistance of laminates is often dependant on their distribution in the material, especially with respect to the location...
Article
The present paper describes concepts and a preliminary project of a helicopter device, to investigate the use of natural fiber composites for semi-structural applications, such as electronic racks. The aim of the study consists on the evaluation of the substitution of the steel electronic rack, mounted on the helicopter Eurocopter AS 350 Écureuil,...
Article
Full-text available
Hemp fabric reinforced polypropylene composites have been manufactured by film stacking method and their tensile and impact properties (notched Izod and low velocity impact at energies ranging from 5 J to 15 J) studied. Despite a non optimal interface adhesion, tensile modulus has been consistently increased by reinforcing polypropylene with growin...
Article
The behavior of natural fiber-reinforced composites under low-velocity impact is described, with particular emphasis on the phenomenon of impact, the sequence of damage, and the testing methods and instruments utilized. The ultrasonic nondestructive inspection (NDI) technique for the delamination evaluation of composite materials is illustrated. Fo...
Article
Full-text available
13 pages, 23 figures. Aim of this work is to determine experimentally some important mechanical characteristics of RTM hemp plain weave fabric/epoxy laminates. Equipment and test methods are described and critically discussed. Main subjects of this work are: RTM process improvement, preliminary tensile and flexural tests and impact performance. The...
Article
Aim of the present study is to evaluate the mechanical properties of hemp woven fabrics from Italian textile industry, to be utilised as reinforcement both for polypropylene and for epoxy matrix. Chemical treatments have been performed to improve interface adhesion: de-waxing, NaOH solution plus silane as a coupling agent (3-aminopropyl-trimethoxy...
Article
Natural fibres composite materials can have an important role for the planet sustainability. The use of such materials involves the following considerations: complete biodegradability; no toxic agents; no fabrication energy consumption (very low emissions). The purpose of this paper is to evaluate the Life Cost Analysis (LCA) of natural fibres comp...
Article
Full-text available
Aim of this work was to review information about natural long fibres reinforced composites focusing on interface, wettability, fibre-matrix adhesion, moisture absorption, correlating them with macroscopical mechanical properties. Weak fibre/matrix interface does not permit a complete performance exploitation in composite materials. Physical and/or...
Article
This paper describes the latest industrial applications for natural-fibre-reinforced composite materials. It also presents some lines of university research, various industrial products, and possible applications in the aeronautical sector, starting from non-structural components for ultralight aircraft.
Article
The purpose of this paper is to examine the behaviour of the dry stitched composites when they are subjected to low velocity impact loads. Such composites have been laminated in combination with the Resin Film Infusion (RFI) technique.The experimental results exposed in this document are obtained from the Compression before Impact (CBI) and Compres...
Article
Full-text available
A new ultrasonic technique, in the form of reflection, was used to determine the internal damage status of very low-cost composite laminates, subjected to transversal impact loads at low-velocity. The natural base materials consist of jute fibres woven rovings embedded with a vinylester resin. The common moulding by vacuum bag polymerisation techni...
Article
The purpose of the paper is to show the importance of the acoustic attenuation and probe frequency for the reliable evaluation of delaminations on composite materials subjected to NDI ultrasonic investigation. An original ultrasonic NDI methodology has been applied to some composite materials of wide application, characterized by a high acoustic at...
Article
The purpose of the paper is to show the importance of the acoustic attenuation and probe frequency for the reliable evaluation of delaminations on composite materials subjected to NDI ultrasonic investigation. An original ultrasonic NDI methodology has been applied to some composite materials of wide application, characterized by a high acoustic at...
Article
In the present paper an ultrasonic NDI technique for the delaminations evaluation on several composite materials is described. The methodology, based on an ultrasonic test apparatus in the form of reflection, allows us to determine the position along the thickness and extension of delaminations on several CFRP, GFRP and KFRP laminates subjected to...
Article
Low velocity impact tests were carried out on carbon-fabric/epoxy laminates of different thicknesses, by means of a hemispherical impactor. The force and absorbed energy at the point of delamination initiation, the maximum force and related energy, and penetration energy were evaluated. From the experimental results, all these quantities, except th...
Article
The purpose of the present paper is to evaluate the tensile strength reduction of angle-ply composite laminates due to low-velocity impact. Three angle ply lay-up were chosen: [+30',-300]2s, [+45',-45oI2s and + ⁶⁰ ',[- ⁶⁰ ]2s. Impact tests were performed at different impact energy level and then an ultrasonic scan NDI was performed, to evaluate the...
Article
Delamination is a failure mode particular to composite materials and it is introduced by the interlaminar components of the stress tensor. Under static uniaxial loading, a 3D stress state occurs at the free edges of a composite structural member whereas the values of the interlaminar stress components can become critical and determine the static fa...
Article
An accurate N.D.I. methodology can give a good knowledge of the internal damage status. The main purpose of the present paper is to describe the testing methodology and to discuss the testing procedures that have been performed in order to evaluate the position and the dimensions of the delaminations that occur in different composite materials unde...
Article
The purpose of the present paper is to provide the assessment and evaluation results of the temperature and lateral pressure influence on the CFRP pin loaded joints strength while they are subjected to tension. The subject study is composed of the following two main parts: 1. the Experimental Results, which are obtained through the application of f...
Article
Full-text available
The purpose of this work was the evaluation of the behavior of fiber-reinforced composites and sandwich panels for aeronautical applications under impact. Experimental tests were performed on several specimen configurations, based on different quasi-isotropic lay-up and materials such CFRP, CFRTP and a syntactic foam as the core of sandwich panels....
Article
The influence of the interlaminar stresses on the fatigue behaviour of composite laminates is studied. The present paper is comprised of experimental results and comparison with theoretical results on the delamination onset and propagation. Numerical results are obtained by a specialized computer code which has shown the points where the high inten...
Article
Purpouse of this paper is to describe the results of a large test campaign conducted on CFRP Double Lap Bolted Joint, to study the influence of different temperatures and clamping loads conditions on their tensile static strength.
Article
A mathematical method to solve structural problems, using parameter-transfer finite elements (P-TFE) was recently proposed by the authors [1] [2] [3]. The proposed transfer finite element approach is able to create a mathematical model of a structure, taking into account directly the whole behaviour of the structure under dynamic, aerodynamic, and...

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Projects

Project (1)
Project
Studying the effect of impacts on composites at various velocity regimes. Evaluating the best experimental techniques to detect, evaluate and locate damages by using embedded sensor and advanced signal treatments. Evaluate the mechanics of impact by studying also the effect of curvature on the damages. Evaluate the role of basalt and natural fibers on the tolerance to impact. Previous papers on the subject: On the vealuation of impact damage on composite materials COMPOSITE STRUCTURES 2014 Drop-weight impact behaviour of woven hybrid basalt carbon epoxy COMPOSITES PART B 2014 Sparse sensing detection of impact-induced delaminations in composite laminates COMPOSITE STRUCTURES 2015 Analytical modelling of high-velocity impacts on thin woven fabric COMPOSITE STRUCTURES 2015 Damage tolerance of carbon flax hybrid composites subjected to low velocity impact COMPOSITES PART B 2016 Detection of low-velocity impact-induced delaminations in composite laminates using Auto-Regressive models COMPOSITE STRUCTURES 2016 Low velocity impact response of basalt-aluminium fibre metal laminates MATERIALS AND DESIGN 2016 Low-velocity impact behaviour of hemp fibre reinforced bio-based epoxy laminates COMPOSITES PART B 2016 Effects of curvature on high-velocity impact resistance of thin woven fabric composite targets COMPOSITE STRUCTURES 2017 High velocity impact behaviour of hybrid basalt carbon epoxy composites COMPOSITE STRUCTURES 2017