Non-Destructive Machinability Characterization of Materials Through a Correlation With Rate of Strain Sensitivity

1999 ◽  
Vol 122 (4) ◽  
pp. 691-697
Author(s):  
Jeffrey A. Sprague ◽  
Evangelos C. Eleftheriou ◽  
Charles E. Bates
Keyword(s):  
High Speed ◽  
Cast Irons ◽  
Large Pool ◽  
Large Numbers ◽  
Drop Tests ◽  
Quick Measurement ◽  
Characterization Of Materials ◽  
Non Destructive ◽  
Machinability Data

The results of this work establish a foundation on which the development of experimental practices and instrumentation can be based for quick measurement of machinability in a non-destructive manner. The objective of the investigation presented was to establish an experimental correlation between rate of strain, or rate of loading, and the machinability of cast irons. Such an investigation would require the availability of a very large pool of machinability data, and high speed straining of materials. Through an experimental method utilizing drop tests, the correlation was established and verified through large numbers of drillability tests on cast iron specimens supplied by industrial affiliates. [S1087-1357(00)01802-5]

BWO-Characterization of Materials and Devices at Frequencies 100-1000 GHz.

2000 ◽  
Vol 631 ◽  
Author(s):  
A. A. Volkov ◽  
V. B. Anzin ◽  
Yu. G. Goncharov ◽  
B. P. Gorshunov ◽  
G. A. Komandin ◽  
...  
Keyword(s):  
High Speed ◽  
Open Space ◽  
Frequency Tuning ◽  
High Radiation ◽  
Phase Measurements ◽  
Spectral Technique ◽  
Wide Range ◽  
Characterization Of Materials ◽  
Space Measurement

ABSTRACTWe have developed multipurpose spectral technique for amplitude and phase measurements at frequencies 100–1000 GHz based on the use of backward wave oscillators (BWOs) as sources of probing radiation. It utilizes to the utmost all the remarkable advantages of BWOs such as high radiation intensity, monochromaticity, polarization, as well as high speed and wide range of frequency tuning. Extremely simple and flexible open-space measurement geometries are used. The developed technique seems to be the most appropriate and promising for the reliable, precise and mass characterization of materials and devices at millimeter-submillimeter waves.

scholarly journals A Review of Non-Destructive Thermography Techniques Toward Structural Integrity of Bio-Composites

2011 ◽  
Vol 471-472 ◽  
pp. 103-108 ◽  
Author(s):  
Zahra Dashtizadeh ◽  
Aidy Ali ◽  
Abdan Khalina
Keyword(s):  
Composite Materials ◽  
Structural Integrity ◽  
Destructive Testing ◽  
Advantages And Disadvantages ◽  
Composites Materials ◽  
Characterization Of Materials ◽  
Non Destructive ◽  
Food Safety And Quality

It is well known those two popular methods of testing; destructive testing based on fracture mechanics and non-destructive testing (NDT) which does not make any damage in the specimen. NDT was first used for military purpose but nowadays it is used widely in many fields such as composite materials, medical purposes, fire safety, laser welding, food safety and quality and characterization of materials. The aim of this paper is to review the recent advancement of thermography non-destructive methods especially in testing a quality of bio-composites materials. The review reveals the advantages and disadvantages of pursuing any of the available methods in NDT on bio composite materials.

scholarly journals MERGING GEOMETRIC DOCUMENTATION WITH MATERIALS CHARACTERIZATION AND ANALYSIS OF THE HISTORY OF THE HOLY AEDICULE IN THE CHURCH OF THE HOLY SEPULCHRE IN JERUSALEM

2017 ◽  
Vol XLII-5/W1 ◽  
pp. 487-494 ◽  
Author(s):  
A. Georgopoulos ◽  
E. Lambrou ◽  
G. Pantazis ◽  
P. Agrafiotis ◽  
A. Papadaki ◽  
...  
Keyword(s):  
Building Materials ◽  
Structural Integrity ◽  
Interdisciplinary Approach ◽  
Integrated Approach ◽  
History Of ◽  
Diagnostic Research ◽  
Characterization Of Materials ◽  
Non Destructive ◽  
The Church

The National Technical University of Athens undertook the compilation of an "Integrated Diagnostic Research Project and Strategic Planning for Materials, Interventions Conservation and Rehabilitation of the Holy Aedicule of the Church of the Holy Sepulchre in Jerusalem". This paper focuses on the work merging the geometric documentation with the characterization of materials, the identification of building phases and the diagnosis of decay and pathology through the use of analytical and non-destructive techniques. Through this integrated approach, i.e. through the documentation and characterization of the building materials, through the diagnosis of decay and pathology, through the accurate geometric documentation of the building and through the non-destructive prospection of its internal structure, it was feasible to identify the construction phases of the Holy Aedicule, identifying the remnants of the preserved earlier constructions and the original monolithic Tomb. This work, thus, demonstrates that the adoption of an interdisciplinary approach for integrated documentation is a powerful tool for a better understanding of monuments, both in terms of its structural integrity, as well as in terms of its state of preservation, both prerequisites for effective rehabilitation.

scholarly journals A COMBINED STUDY OF ART WORKS PRESERVED IN THE ARCHAEOLOGICAL MUSEUMS: 3D SURVEY, SPECTROSCOPIC APPROACH AND AUGMENTED REALITY

2019 ◽  
Vol XLII-2/W11 ◽  
pp. 201-207 ◽  
Author(s):  
V. Barrile ◽  
A. Fotia ◽  
R. Ponterio ◽  
V. Mollica Nardo ◽  
D. Giuffrida ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Three Dimensional ◽  
Geographic Area ◽  
Archaeological Heritage ◽  
Art Works ◽  
Three Dimensional Models ◽  
Characterization Of Materials ◽  
Available Information ◽  
Non Destructive

<p><strong>Abstract.</strong> The renewed interest, in the context of international museological studies, for historical installations such as museographic devices (able to give shape to a space duly dialoguing with the user), is due today to their communicative immediacy. In recent years the availability of libraries and tools for the use of augmented reality (AR) content has undergone an important increase. AR innovation represents a new method for enhancing the presence visitors into the museum industry despite its use leads to an increase in costs and instrumental investments. In this regard, in a wider work of valorisation and dissemination of archaeological heritage, we are working on the development of an app for tourism purposes. The aim of this paper is the application of some techniques (3D modelling, spectroscopy, virtual reality) to study, record and make available information about archaeological artefacts preserved in the Regional Museum of Lipari (clay masks) and in the National Archaeological Museum of Reggio Calabria (the statue Kouros and the Amphoras). The three-dimensional models produced are well suited to applications of augmented reality for the promotion and dissemination of information on the archaeological /architectural/cultural heritage.</p><p>Moreover, the integration of the information about characterization of materials are essential in order to identify both geographic area of provenience and manufacturing historic period. Some pigments or medium, and in general all materials, can be indeed connected to a determinate historic time or to a specific artist; to this particular purpose spectroscopic methods are valid approach for their non-destructive nature.</p>

Micro-Raman Spectroscopy for the Characterization of Materials in Electronic and Photonic Devices

1997 ◽  
Vol 3 (S2) ◽  
pp. 843-844
Author(s):  
David D.Tuschel
Keyword(s):  
Raman Spectroscopy ◽  
Photonic Devices ◽  
Materials Characterization ◽  
Selection Rules ◽  
Micro Raman Spectroscopy ◽  
Optical And Electronic Properties ◽  
Oriented Polycrystalline ◽  
Characterization Of Materials ◽  
Non Destructive

Materials characterization is the primary application of macro- and micro-Raman spectroscopy in our laboratory. Specifically, we wish to correlate chemical bonding and short to long range translational symmetry (including amorphous, highly oriented, polycrystalline, and single crystal materials) to physical, optical and electronic properties of materials and devices. Raman spectroscopy is particularly useful in this capacity because of its origin in the vibrational motions of chemically bonded atoms and its dependence upon crystal symmetry through the polarization selection rules. Furthermore, the high spatial resolution and non-destructive nature of micro-Raman spectroscopy make it ideal for in situcharacterization of electronic and photonic devices. We will present results of materials characterization studies, performed using macro- and micro-Raman spectroscopy, of electronic and photonic devices. In addition, we will discuss how the Raman polarization selection rules can be advantageously applied to device characterization.A primary area of investigation involves the study of ion-implanted and annealed Si by Raman spectroscopy.

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