The colors of San José pottery from Yocavil valley, Argentine Northwest. Strategy for the characterization of archaeological pigments using non-destructive techniques

The wear is very difficult to characterize because of its complexity and its measurement phenomenon. Our work is to prepare samples Fan blades, worn, to determine the nature of the wear and damage them. For these reasons, the characterization of these samples was conducted in different microscopic and macroscopic scales. We used non-destructive techniques such as eddy current and penetrant methods. The results obtained allowed us to see the deterioration of fins from one floor to another. These results are directly related to the effects of mechanical, thermal and pressure. It has been, in addition to detecting a different type of damage these fan blades that is the fatigue damage.

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Sonic and Impact Test for Structural Assessment of Historical Masonry

Applied Sciences ◽

10.3390/app9235148 ◽

2019 ◽

Vol 9 (23) ◽

pp. 5148 ◽

Cited By ~ 1

Author(s):

Alessandro Grazzini

Keyword(s):

Impact Test ◽

Structural Parameters ◽

Historical Masonry ◽

2016 Amatrice Earthquake ◽

The Impact ◽

Santa Maria ◽

Non Destructive ◽

Non Destructive Techniques

Diagnostics is a very important tool of knowledge in the field of historical buildings. In particular, non-destructive techniques allow to deepen the study of the mechanical characteristics of the historical walls without compromising the artistic value of the monumental building. A case study of the use of sonic and impact tests was described, performed using the same instrumented hammer, for the characterization of the masonry walls at the Sanctuary of Santa Maria delle Grazie at Varoni, one of the churches damaged in the 2016 Amatrice earthquake. Sonic tests showed the presence of a discontinous masonry texture, as well as confirming the ineffectiveness of the strengthening work made by injections of lime mortar. The impact test allowed us to obtain the elastic modulus of the omogeneous stones of the masonry. The results obtained from the non-destructive techniques were confirmed by the flat jacks test carried out on the building, confirming the great potential of the non-destructive diagnostics suitable for analyzing important structural parameters without affecting the preservation of historical masonry structures.

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Brief Review on Experimental and Computational Techniques for Characterization of Cellular Metals

Metals ◽

10.3390/met10060726 ◽

2020 ◽

Vol 10 (6) ◽

pp. 726 ◽

Cited By ~ 2

Author(s):

Isabel Duarte ◽

Thomas Fiedler ◽

Lovre Krstulović-Opara ◽

Matej Vesenjak

Keyword(s):

Computed Tomography ◽

Acoustic Properties ◽

Computational Techniques ◽

Numerical Techniques ◽

X Ray ◽

X Ray Computed ◽

Cellular Metals ◽

Non Destructive ◽

Non Destructive Techniques

The paper presents a brief review of the main experimental and numerical techniques and standards to investigate and quantify the structural, mechanical, thermal, and acoustic properties of cellular metals. The potential of non-destructive techniques, such as X-ray computed tomography and infrared thermography are also presented.

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Vibration-Based Non-Destructive Techniques for a 3-Level Characterization of Damages in Cables

Special Topics in Structural Dynamics & Experimental Techniques, Volume 5 - Conference Proceedings of the Society for Experimental Mechanics Series ◽

10.1007/978-3-030-47709-7_16 ◽

2020 ◽

pp. 165-172

Author(s):

Abdou Dia ◽

Lamine Dieng ◽

Laurent Gaillet

Keyword(s):

Non Destructive ◽

Non Destructive Techniques

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Archaeometric Characterization of Obsidian Artifacts at Casa dei Francesi (Ustica Island, Italy) and Clues of a Hidden Prehistoric Settlement

Open Archaeology ◽

10.1515/opar-2020-0111 ◽

2020 ◽

Vol 6 (1) ◽

pp. 236-247

Author(s):

Franco Foresta Martin ◽

Felice Larocca ◽

Francesca Micheletti ◽

Mauro Pallara ◽

Pasquale Acquafredda

Keyword(s):

Bronze Age ◽

Scientific Literature ◽

Agricultural Field ◽

Show Evidence ◽

Middle Bronze Age ◽

Functional Analyses ◽

Non Destructive ◽

Non Destructive Techniques ◽

Late Roman

AbstractAt Ustica island (Palermo, Italy), in the area of Casa dei Francesi, 119 fragments of obsidian artifacts were collected on the surface of an agricultural field at an altitude of 50 m asl. In the same area, until now, scientific literature reports only the presence of late Roman pottery (4th–6th centuries AD), and no evidence has appeared that it could be the site of a prehistoric settlement. The most important prehistoric settlement, the Faraglioni Village (Middle Bronze Age) is located 700 m further north, overlooking the sea. Obsidian provenance analyses, performed on the 119 samples with absolutely non-destructive techniques WD-XRF and SEM-EDS, indicate two sources areas: Lipari (93 samples, 78%) and Pantelleria (26 samples, 22%). Concerning the obsidians from the island of Pantelleria, it was possible to also establish the sub-source of Salto la Vecchia. The typological and functional analyses of the 119 obsidian fragments point out that 115 are debitages, some of which show evidence of percussion bulbs, and only 4 are tools with micro-retouching. This work focuses on the geochemical and typological characterization of the obsidian assemblage collected, the characteristics of which suggest the existence of a prehistoric settlement in the area of the Casa dei Francesi or nearby.

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Characterization of Weldments and Materials Using Thermoelectric Power Measurements

Materials Science Forum ◽

10.4028/www.scientific.net/msf.580-582.117 ◽

2008 ◽

Vol 580-582 ◽

pp. 117-120

Author(s):

Young Do Park ◽

A.N. Lasseigne-Jackson ◽

J.E. Jackson ◽

Brajendra Mishra ◽

D.L. Olson ◽

...

Keyword(s):

Thermoelectric Power ◽

Lattice Strain ◽

Measurement Techniques ◽

Power Coefficient ◽

Material Microstructure ◽

Coefficient Measurement ◽

Power Measurements ◽

Non Destructive ◽

Non Destructive Techniques

Thermoelectric power coefficient measurement techniques have been developed for numerous applications to guarantee material integrity by providing a non-destructive electronic property correlation to material microstructure, phase stability, specific solute additions, and lattice strain. How the electron concentration, the effective mass, and the dominating scattering mechanisms allow for non-destructive evaluation of materials will be described. Because thermoelectric power (TEP) is dependent upon numerous variables, additional non-destructive techniques are necessary to further characterize or classify the material or weldment. The concept of an electronic metallography laboratory is developed using additional collaborative NDE technologies.

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Porosity Characterization of Aluminium Castings by Using Particular Non-destructive Techniques

Journal of Nondestructive Evaluation ◽

10.1007/s10921-015-0302-z ◽

2015 ◽

Vol 34 (3) ◽

Cited By ~ 7

Author(s):

Aneta Wilczek ◽

Piotr Długosz ◽

Marek Hebda

Keyword(s):

Non Destructive ◽

Non Destructive Techniques ◽

Porosity Characterization

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Degradation Assessment of Polyethylene-Based Material Through Electrical and Chemical-Physical Analyses

Energies ◽

10.3390/en13030650 ◽

2020 ◽

Vol 13 (3) ◽

pp. 650 ◽

Cited By ~ 1

Author(s):

Simone Vincenzo Suraci ◽

Davide Fabiani ◽

Laura Mazzocchetti ◽

Loris Giorgini

Keyword(s):

Thermal Analyses ◽

Polymeric Materials ◽

Degradation Mechanisms ◽

Electrical Measurements ◽

Oxidation Induction Time ◽

Chemical Measurements ◽

Different Temperatures ◽

Non Destructive ◽

Non Destructive Techniques

The usability of any material hinges upon its stability over time. One of the major concerns, focusing on polymeric materials, is the degradation they face during their service life. The degradation mechanisms are deeply influenced by the aging temperature to which the material is subjected. In this paper, low-density polyethylene (LDPE) flat specimens were thermally aged under two different temperatures (90 °C and 110 °C) and analyzed. Specimens were characterized through both the most common mechanical and chemical measurements techniques (e.g., tensile stress, thermal analyses, oxidation induction time) and electrical measurements (dielectric spectroscopy, in particular), which are examples of non-destructive techniques. As a result, a very spread characterization of the polyethylene-based materials was obtained and a very good correlation was found to exist between these different techniques, highlighting the possibility of following the aging degradation development of polymers through electrical non-destructive techniques.

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