Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where V. Lopresto is active.

Publication


Featured researches published by V. Lopresto.


Applied Composite Materials | 2012

Effect of a Thin Soft Core on the Impact Behaviour of CFRP Laminates

Giancarlo Caprino; V. Lopresto; Massimo Riccio; Claudio Leone

Low-velocity impact tests were carried out on sandwich plates having CFRP facings and thin rubbery core. Two types of cores, differing in the material nature and thickness, were used. For comparison, similar tests were performed on the monolithic laminate. Various impact parameters, among which indentation, first failure energy, perforation energy, absorbed energy and maximum contact force, were analyzed, to highlight the effect of the core on the material response. The influence of the core on the macroscopic behaviour of the panels was quite limited, except in the elastic phase, where the lower stiffness of the sandwich configurations resulted in a higher energy at first failure. More relevant differences were found from the study of failure modes, carried out combining ultrasonic C-scan and a limited number of microscopic observations. In particular, in correspondence of the energy for barely visible impact damage, besides considerable facing-core debonding, both the facings of the sandwich structures exhibited fibre breakage at their back side.


XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers | 2010

Laser ablation of maskant used in chemical milling process for aerospace applications

Claudio Leone; V. Lopresto; F. Memola Capece Minutolo; I. De Iorio; N. Rinaldi

Chemical etching is a non-traditional machining process where a chemical solution is used to remove unwanted material by dissolution. To shape the etched area, before the process, a chemical inert paint (maskant) is applied on the surface. Then the maskant is trimmed away and the uncovered area is subject to the etching. The maskant cut could be obtained mechanically or by laser ablation. In this work, the effect of process parameters, cutting speed and beam power, on interaction phenomena and defect formation in laser cutting of polymeric maskant is studied, using a 30W CO2 laser source.


Archive | 2012

Laser cutting of silicon wafer by pulsed Nd:YAG source

Claudio Leone; V. Lopresto; N. Pagano; S. Genna; I. De Iorio


Archive | 2009

Thick layer equally oriented effect on acoustic emission behaviour of carbon-fibre-reinforced-plastic laminates

V. Lopresto; Claudio Leone; G. Caprino; I. De Iorio; I. Papa


19th International Conference on Composite Materials - ICCM19 | 2013

IRREVERSIBLY ABSORBED ENERGY AND DAMAGE IN BFRP LAMINATES IMPACTED AT LOW-VELOCITY

V. Lopresto; A. Langella; Claudio Leone; G. Caprino; G. Villani


Archive | 2010

NDE for identification and evolution of impact damage in GFRP

V. Lopresto; Claudio Leone; G. Caprino; G. M. Carlomagno; C. Meola


13th European Conference on Composite Materials | 2008

COMPOSITE MATERIALS CHARACTERIZATION BY ACOUSTIC EMISSION TECHNIQUE

V. Lopresto; Claudio Leone; G. Caprino; I. De Iorio


Archive | 2012

Laser cutting of CFRP sheet by pulsed Nd:YAG source: Influence of pulse energy, pulse duration and overlapping on kerf geometry and HAZ

N. Pagano; Claudio Leone; V. Lopresto; I. De Iorio


Archive | 2010

Characterization of innovative sandwiches for civil applications made by industrial wastes recycling

V. Lopresto; Claudio Leone; I. De Iorio


Archive | 2010

Multi-Passes Scan Techniques for Q-switched Nd:YAG Laser Cutting of CFRP Thin Sheets

Claudio Leone; V. Lopresto; I. De Iorio

Collaboration


Dive into the V. Lopresto's collaboration.

Top Co-Authors

Avatar

Claudio Leone

University of Naples Federico II

View shared research outputs
Top Co-Authors

Avatar

I. De Iorio

University of Naples Federico II

View shared research outputs
Top Co-Authors

Avatar

G. Caprino

University of Naples Federico II

View shared research outputs
Top Co-Authors

Avatar

I. Papa

University of Naples Federico II

View shared research outputs
Top Co-Authors

Avatar

S. Genna

University of Naples Federico II

View shared research outputs
Top Co-Authors

Avatar

F. Memola Capece Minutolo

University of Naples Federico II

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

V. Tagliaferri

University of Rome Tor Vergata

View shared research outputs
Researchain Logo
Decentralizing Knowledge