scholarly journals Cohesive fracture in composite systems: experimental setup and first results

2019 ◽  
Vol 13 (48) ◽  
pp. 222-229 ◽  
Author(s):  
Valentino Berardi ◽  
Michele Perrella ◽  
Gabriele Cricrì
Keyword(s):  
Experimental Setup ◽  
Cohesive Fracture ◽  
Composite Systems ◽  
First Results

scholarly journals New beam line of biomolecular ions at ARIBE facility: Experimental setup, first results and prospects

2009 ◽  
Vol 194 (14) ◽  
pp. 142003
Author(s):  
M Capron ◽  
V Bernigaud ◽  
R Maisonny ◽  
P Rousseau ◽  
J-Y Chesnel ◽  
...  
Keyword(s):  
Beam Line ◽  
Experimental Setup ◽  
First Results ◽  
Biomolecular Ions

Effect of the Loading History on Shape Memory Alloy Transformation Temperatures

2008 ◽  
Vol 59 ◽  
pp. 57-62 ◽  
Author(s):  
Gabriella Faiella ◽  
Vincenza Antonucci ◽  
Michele Giordano ◽  
Federica Daghia ◽  
Erasmo Viola
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Constitutive Models ◽  
Complex Loading ◽  
Loading History ◽  
Scanning Calorimetry ◽  
Stress Strain ◽  
Transformation Temperatures ◽  
Composite Systems ◽  
First Results

Due to the complex microstructure and phase transformations taking place in Shape Memory Alloys (SMA), the behaviour and properties of these materials are deeply influenced by their loading history in terms of stress, strain and temperature. Indeed, a thorough understanding of the effects of the loading history on SMA properties is fundamental for a correct modelling and design of SMA applications, in particular in the case of complex loading. An example are shape memory alloys embedded in composite systems, in which stress, strain and temperature vary simultaneously depending upon the properties of the SMA and composite. This work presents the first results of an experimental investigation on the effects of the loading history on SMA transformation temperatures. Nitinol wires of untrained material were considered. Specimens consisting of Martensite and R-phase were subjected to different loading histories, keeping in turn stress, strain or temperature at a constant value. Transformation temperatures at zero stress of these samples were measured via Differential Scanning Calorimetry. Contrarily to most constitutive models assumptions, the DSC results highlight a dependence of the transformation temperatures on the loading history, influencing in particular the Martensite to Austenite phase transformation.

scholarly journals A new station for monitoring electromagnetic fields in Duronia (Italy): experimental setup and first results

2010 ◽  
Vol 52 (5) ◽  
Author(s):  
Paolo Palangio ◽  
Fabrizio Masci ◽  
Manuele Di Persio ◽  
Cinzia Di Lorenzo ◽  
Elisabetta Lampis
Keyword(s):  
Electromagnetic Fields ◽  
Experimental Setup ◽  
First Results

scholarly journals Homogeneous nucleation of sulfuric acid and water mixture: experimental setup and first results

2009 ◽  
Vol 9 (6) ◽  
pp. 23875-23907
Author(s):  
D. Brus ◽  
A.-P. Hyvärinen ◽  
Y. Viisanen ◽  
M. Kulmala ◽  
H. Lihavainen
Keyword(s):  
Sulfuric Acid ◽  
Laminar Flow ◽  
Theoretical Prediction ◽  
Acid Concentration ◽  
Homogeneous Nucleation ◽  
Sulfuric Acid Concentration ◽  
Experimental Setup ◽  
Water Mixture ◽  
Flow Tube ◽  
First Results

Abstract. In this study we introduce a new laminar flow tube suitable for binary and ternary homogeneous nucleation studies. The production of sulfuric acid and water vapor mixture, the experimental setup and the method of sulfuric acid concentration determination are discussed in details. Wall losses were estimated from the measured sulfuric acid concentration profile along the laminar flow tube and compared to a theoretical prediction. In this investigation the experimental evidence of new particle formation was observed at concentration of 109 molecules of sulfuric acid in cm3 and nucleation rates measured at three relative humidities (RH) 10, 30 and 50% cover six orders of magnitudes from 10−3 to 103 particles in cm3. Particle free air was used as a carrier gas. Our first results are compared to theoretical prediction of binary homogeneous nucleation, to results obtained by other investigators and to atmospheric nucleation.

First results of the DIVING3D survey of bright galaxies in the local universe: The mini-DIVING3D sample

2019 ◽  
Vol 15 (S359) ◽  
pp. 450-451
Author(s):  
R. B. Menezes ◽  
J. E. Steiner ◽  
T. V. Ricci ◽  
Patrícia da Silva ◽  
D. M. Nicolazzi
Keyword(s):  
Emission Line ◽  
High Spatial Resolution ◽  
H Ii Regions ◽  
Local Universe ◽  
Composite Systems ◽  
Integral Field Spectroscopy ◽  
Field Spectroscopy ◽  
Line Region ◽  
First Results ◽  
Integral Field

AbstractWe present the first results of the Deep Integral Field Spectroscopy View of Nuclei of Galaxies (DIVING3D) survey, obtained from the analysis of the nuclear emission-line spectra of a sub-sample we call mini-DIVING3D, including all southern galaxies with B < 11.2 and |b| >15°. In comparison with previous studies, very few galaxies were classified as Transition objects. A possible explanation is that at least part of the Transition objects are composite systems, with a central low-ionization nuclear emission-line region (LINER) contaminated by the emission from circumnuclear H II regions. The high spatial resolution of the DIVING3D survey allowed us to isolate the nuclear emission from circumnuclear contaminations, reducing the number of Transition objects.

scholarly journals Homogeneous nucleation of sulfuric acid and water mixture: experimental setup and first results

2010 ◽  
Vol 10 (6) ◽  
pp. 2631-2641 ◽  
Author(s):  
D. Brus ◽  
A.-P. Hyvärinen ◽  
Y. Viisanen ◽  
M. Kulmala ◽  
H. Lihavainen
Keyword(s):  
Sulfuric Acid ◽  
Theoretical Prediction ◽  
Acid Concentration ◽  
Homogeneous Nucleation ◽  
Sulfuric Acid Concentration ◽  
Experimental Setup ◽  
Water Mixture ◽  
Flow Tube ◽  
Atmospheric Nucleation ◽  
First Results

Abstract. In this study we introduce a new flow tube suitable for binary and ternary homogeneous nucleation studies. The production of sulfuric acid and water vapor mixture, the experimental setup and the method of sulfuric acid concentration determination are discussed in detail. Wall losses were estimated from the measured sulfuric acid concentration profiles along the flow tube and compared to a theoretical prediction. In this investigation the experimental evidence of new particle formation was observed at a concentration of 109 molecules cm−3 of sulfuric acid and the nucleation rates measured at three relative humidities (RH) 10, 30 and 50%, cover six orders of magnitude, from 10−3 to 103 particles cm−3. Particle free air was used as a carrier gas. Our initial results are compared to the theoretical prediction of binary homogeneous nucleation, to results obtained by other investigators, and to atmospheric nucleation.

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