scholarly journals Non destructive investigation for historic documentation and construction qualification of monumental buildings: the case of S. Gregory Church in Bari, South Italy

2013 ◽  
Author(s):  
M. De Fino ◽  
F. Fatiguso ◽  
A. Scioti ◽  
G. De Tommasi
Keyword(s):  
South Italy ◽  
Non Destructive

12 Years of Structural Health Assessment and Maintenance for the Glulam Timber Structure of the Mormanno Traffic Bridge in Calabria

2013 ◽  
Vol 778 ◽  
pp. 771-778 ◽  
Author(s):  
Giorgio Bignotti
Keyword(s):  
Moisture Content ◽  
Health Assessment ◽  
Timber Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
South Italy ◽  
Structural Health Assessment ◽  
Year 2000 ◽  
Non Destructive ◽  
Timber Bridges

The Mormanno traffic Bridge, built at the end of the year 2000 in South Italy, with its glulam exposed structure spanning around 70 m, is one of the most impressive traffic timber bridges in the world. The paper illustrates the various analysis executed for the assessment of the health of the structure and for the following maintenance actions during the first twelve years of service of the Bridge (2001-2013). In the year 2004 a first visit for the assessment of the health of the timber bridge was decided. A team of experts inspected the bridge in order to check the conditions of the timber structures and register all the damages produced by weathering, fungi and insects on the structural elements. The experts found the decay still limited but recommended a maintenance action capable to stop the initial degenerative process mainly due to a moisture content higher than normal. In the year 2008 [ a new inspection team visited the bridge for the second time in order to check the effectiveness of the measures of protection adopted four years before. Non-destructive testing were used to investigate the health of the main glulam arches. The decay in the members object of the previous maintenance in general had stopped or slowed down, but in some other parts the moisture content was still higher than acceptable and more protections were added. In the following years the maintenance was completed giving the bridge the possibility to extend its service with a sufficient level of safety. The frequent inspections of the bridge structure provided useful information for the maintenance of the Mormanno bridge but also in general for the design of the durability and for the maintenance planning of exposed timber structures. Fig. 1 the Mormanno Bridge in service

Luminescence from individual dislocations in II-VI and III-V semiconductors

1991 ◽  
Vol 49 ◽  
pp. 834-835
Author(s):  
J W Steeds
Keyword(s):  
Group Iv ◽  
Luminescence Properties ◽  
Carrier Recombination ◽  
Transmission Electron ◽  
Wide Range ◽  
Basic Physics ◽  
Semiconducting Compounds ◽  
Diamond Group ◽  
Non Destructive ◽  
Technological Significance

There is a wide range of experimental results related to dislocations in diamond, group IV, II-VI, III-V semiconducting compounds, but few of these come from isolated, well-characterized individual dislocations. We are here concerned with only those results obtained in a transmission electron microscope so that the dislocations responsible were individually imaged. The luminescence properties of the dislocations were studied by cathodoluminescence performed at low temperatures (~30K) achieved by liquid helium cooling. Both spectra and monochromatic cathodoluminescence images have been obtained, in some cases as a function of temperature.There are two aspects of this work. One is mainly of technological significance. By understanding the luminescence properties of dislocations in epitaxial structures, future non-destructive evaluation will be enhanced. The second aim is to arrive at a good detailed understanding of the basic physics associated with carrier recombination near dislocations as revealed by local luminescence properties.

Forensic Identifications Aided by Scanning Electron Microscopy of Silicone-Epoxy Microreplicas of Calcified and Cornified Structures

1975 ◽  
Vol 33 ◽  
pp. 678-679 ◽  
Author(s):  
R.F. Sognnaes
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Forensic Science ◽  
George Washington ◽  
Epithelial Surface ◽  
Extended Application ◽  
Tissue Surfaces ◽  
Non Destructive ◽  
Scanning Electron ◽  
Surface Changes

Sufficient experience has been gained during the past five years to suggest an extended application of microreplication and scanning electron microscopy to problems of forensic science. The author's research was originally initiated with a view to develop a non-destructive method for identification of materials that went into objects of art, notably ivory and ivories. This was followed by a very specific application to the identification and duplication of the kinds of materials from animal teeth and tusks which two centuries ago went into the fabrication of the ivory dentures of George Washington. Subsequently it became apparent that a similar method of microreplication and SEM examination offered promise for a whole series of problems pertinent to art, technology and science. Furthermore, what began primarily as an application to solid substances has turned out to be similarly applicable to soft tissue surfaces such as mucous membranes and skin, even in cases of acute, chronic and precancerous epithelial surface changes, and to post-mortem identification of specific structures pertinent to forensic science.

Non destructive testing of works of art by terahertz analysis

2013 ◽  
Vol 64 (2) ◽  
pp. 21001 ◽  
Author(s):  
Jean-Luc Bodnar ◽  
Jean-Jacques Metayer ◽  
Kamel Mouhoubi ◽  
Vincent Detalle
Keyword(s):  
Non Destructive Testing ◽  
Destructive Testing ◽  
Works Of Art ◽  
Non Destructive

Procédures, méthodes et résultats de la métallographie non-destructive

1984 ◽  
Vol 72 (8-9) ◽  
pp. 339-343
Author(s):  
René Hoeg ◽  
Lars Taarnskov
Keyword(s):  
Non Destructive

Analyse non destructive d’objets métalliques anciens

1953 ◽  
Vol 50 (2) ◽  
pp. 136-138 ◽  
Author(s):  
Georges Ambrosino ◽  
Pierre Pindrus
Keyword(s):  
Non Destructive

Inspection non destructive en ligne de la totalité de la surface des brames de coulée continue

1993 ◽  
Vol 90 (6) ◽  
pp. 823-828
Author(s):  
M. Mayos ◽  
J.M. Turón ◽  
P. Alexandre ◽  
J.L. Salon ◽  
M. Depeyris ◽  
...  
Keyword(s):  
Non Destructive
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