Nondestructive Evaluation for Materials Characterization

1988 ◽  
Vol 142 ◽  
Author(s):  
Robert E. Green
Keyword(s):  
Nondestructive Evaluation ◽  
Chemical Properties ◽  
Evaluation Methods ◽  
Materials Characterization ◽  
Physical And Chemical Properties ◽  
Johns Hopkins University ◽  
Testing Techniques ◽  
Properties Of Materials ◽  
Physical And Chemical ◽  
And Chemical Properties

AbstractIn recent years classical nondestructive testing techniques for detecting macroscopic defects have been augmented by more sophisticated nondestructive evaluation methods for characterizing the microstructure and associated physical and chemical properties of materials. This paper will briefly describe several such nondestructive evaluation methods developed in the Center for Nondestructive Evaluation (CNDE) at The Johns Hopkins University.

Science for Art's Sake

MRS Bulletin ◽  
1986 ◽  
Vol 11 (6) ◽  
pp. 26-29 ◽  
Author(s):  
Leslie Brunetta
Keyword(s):  
Fine Arts ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Last Supper ◽  
The World ◽  
The Face ◽  
Marshall College ◽  
Properties Of Materials ◽  
Physical And Chemical ◽  
And Chemical Properties

Victorian men placed fig leaves over those parts of classical statues they didn't want their wives and children to see. Yet it's easy for someone looking at those statues today to assume that the leaves play some part in the Roman and Greek concepts of physical beauty.A fig leaf may be the most blatant breach of an artist's original inspiration you'll encounter in a museum, but it's not likely to be the only one. Other more subtle transgressions are displayed in nearly every gallery and museum in the country—but unmasking them takes more than just a discerning eye. For instance, did the 17th-century painter see the world as quiet and subdued, or have his bright colors been muted by a 19th-century varnish? Did the classical sculptor intend his work to have an even, green patina, or has the Renaissance infatuation with antiquity allowed this corrosion to hide his varying shades of burnished bronze? Did Leonardo conceive the face of the Christ of “The Last Supper” as speaking, or silent, as his overpainters would have it?“Modern conservators really make us think about objects, says Carol Faill, administrator of college collections at Franklin & Marshall College. “There's been a consciousness raising about objects' own integrity.” Art and science are being used together as never before to gain an understanding of the physical and chemical properties of materials and their role in the fine arts.

scholarly journals A review on properties and applications of nano clay, silica dioxide and titanium oxide

2021 ◽  
Vol 4 (1) ◽  
pp. 67
Author(s):  
Rahida Wati Sharudin ◽  
Mohd Rezza Emir Mohd Azhar ◽  
Muhammad Shafiq Mat Shayuti ◽  
Suffiyana Akbar
Keyword(s):  
Titanium Oxide ◽  
Food Packaging ◽  
Chemical Properties ◽  
Crystallographic Structure ◽  
Physical And Chemical Properties ◽  
Nano Clay ◽  
Properties Of Materials ◽  
Silica Dioxide ◽  
Physical And Chemical ◽  
And Chemical Properties

Nanoparticles have recently been used as fillers or additives in materials for different desired applications. Due to the environmental concerns and rising of nanomaterials usages worldwide, nanoparticles have been focused in research and development. An increase in consumption is indicated by various applications of nanomaterials for both commercial and domestic applications. Nanoparticles own special physical and chemical properties which help in modifying performance of materials or final products. The characterisation of nanoparticles includes crystallographic structure, surface morphology, particles’ size and functional groups. Nano clays and metal oxides of titanium and silica are selected nanoparticles to be discussed on their properties that affect the performance of materials. Along with the studies investigating the properties of the nanoparticles, an interesting concern is to discover the changes in properties of materials when nanoparticles are being added. Properties include mechanical, thermal and physiochemical are improved due to the presence of the nanoparticles in the materials’ matrices, thus existing the applications for the food packaging, the lubricant oils and as the antimicrobial agent. This paper reviews the physical and chemical properties of nano clay, silica oxide and titanium oxide as well as the enhanced properties of materials when being filled with nanoparticles in specific applications. 

scholarly journals Strength characteristics of Quaternary Mix Concrete

2019 ◽  
Vol 8 (11) ◽  
pp. 2305-2308
Keyword(s):  
Compressive Strength ◽  
Silica Fume ◽  
Chemical Properties ◽  
Strength Characteristics ◽  
Partial Replacement ◽  
Physical And Chemical Properties ◽  
Properties Of Materials ◽  
Physical And Chemical ◽  
And Chemical Properties

By handling the cement, bagasse ash, silica fume and metakaolin as partial replacement of cement of cement a quaternary mix concrete could be achieved. Various percentages of replaced materials were considered for analysis. These three different materials consist of high amount of alumina ion and silica percentage. Use of these materials enhances the microstructure of concrete and helps to attain less permeable concrete. Physical and chemical properties of materials analyzed, and partially replaced with cement in different proportions such as HSC [5B, 10B, 15B, 20B] and HSC [5S, 10S, 15S, 20S] and HSC [5M, 10M]. The cubes of [100mm x 100mm x 100 mm] size were cast and tested. After confirming the characteristic compressive strength from cubes, optimum values (HSC 10B, HSC 15S and HSC 5M) has been taken. These values have been mixed up into three propositions (QBSM1, QBSM2 and QBSM3). Compressive strength results show that optimum percentage was found to be QBSM2 (10% SCBA+ 10% SF + 5% MK).

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

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