V. Lopresto
Alenia Aeronautica
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Publication
Featured researches published by V. Lopresto.
Applied Composite Materials | 2012
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
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
Claudio Leone; V. Lopresto; N. Pagano; S. Genna; I. De Iorio
Archive | 2009
V. Lopresto; Claudio Leone; G. Caprino; I. De Iorio; I. Papa
19th International Conference on Composite Materials - ICCM19 | 2013
V. Lopresto; A. Langella; Claudio Leone; G. Caprino; G. Villani
Archive | 2010
V. Lopresto; Claudio Leone; G. Caprino; G. M. Carlomagno; C. Meola
13th European Conference on Composite Materials | 2008
V. Lopresto; Claudio Leone; G. Caprino; I. De Iorio
Archive | 2012
N. Pagano; Claudio Leone; V. Lopresto; I. De Iorio
Archive | 2010
V. Lopresto; Claudio Leone; I. De Iorio
Archive | 2010
Claudio Leone; V. Lopresto; I. De Iorio