Optical and terahertz measurement techniques for flat-faced pharmaceutical tablets: a case study of gloss, surface roughness and bulk properties of starch acetate tablets

AbstractA laser based non-destructive technique has been used to study the morphology of sputterdeposited aluminum alloy films. The data emanating from the Therma-wave Imager that makes use of this principle, has been correlated with reflectivity, grain size and micro-roughness of the film. In addition, through the use of a case study, this paper demonstrates the utility of this application as an in-line monitor in an integrated circuit fabrication line.

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A practical approach for supporting decisions in bridge condition assessment and monitoring

IABSE Congress, New York, New York 2019: The Evolving Metropolis ◽

10.2749/newyork.2019.2136 ◽

2019 ◽

Author(s):

Dániel Honfi ◽

John Leander ◽

Ivar Björnsson ◽

Oskar Larsson Ivanov

Keyword(s):

Measurement Techniques ◽

Condition Assessment ◽

Illustrative Case ◽

Public Authorities ◽

Daily Work ◽

Rational Decision Making ◽

Bridge Condition Assessment ◽

Assessment And Monitoring ◽

Illustrative Case Study

In this contribution a practical and rational decision-making approach is presented to be applied for common bridges typically managed by public authorities. The authors have developed a model with the intention to be applicable for practical cases for common bridges in the daily work of bride operators responsible for a large number of assets, yet still maintain the principles of more generic frameworks based on probabilistic decision-theory.Three main attributes of the verification of sufficiency of structural performance are considered, namely: 1) the level of sophistication of modelling performance, 2) the degree of verification and acceptance criteria in terms of dealing with uncertainties and consequences, 3) the extent of information is obtained and incorporated in the verification.The simplicity of the approach is demonstrated through an illustrative case study inspired by practical condition assessment decision problems. It is argued that in practical cases it may be desirable to utilize less advanced methods owing to constraints in resources or lack of reliable data (e.g. based on structural health monitoring or other on-site measurement techniques).

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From surface data to bulk properties: a case study for antiphase boundaries in GaP on Si(001)

Journal of Physics D Applied Physics ◽

10.1088/1361-6463/abdff1 ◽

2021 ◽

Vol 54 (20) ◽

pp. 205302 ◽

Cited By ~ 1

Author(s):

P Farin ◽

H Eisele ◽

M Dähne ◽

A Lenz

Keyword(s):

Antiphase Boundaries ◽

Bulk Properties ◽

Surface Data

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Single-Phase Heat Transfer in Micro-Tubes: A Critical Review

ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 2 ◽

10.1115/ht2007-32408 ◽

2007 ◽

Cited By ~ 6

Author(s):

Chandramoulee Krishnamoorthy ◽

Rahul P. Rao ◽

Afshin J. Ghajar

Keyword(s):

Heat Transfer ◽

Surface Roughness ◽

Single Phase ◽

Review Paper ◽

Measurement Techniques ◽

Data Bank ◽

Macro Scale ◽

Small Scales ◽

Gaseous Flows ◽

Effect Of Surface

This review paper specifically concentrates on heat transfer in micro-tubes and eleven experiments (on liquid flow) and two experiments (on gaseous flow) from 1991 to 2007 are reviewed critically with respect to measurement techniques, instrumentation; and factors like surface roughness and diameter that may play an important role at these small scales. Moreover, a comprehensive list of numerical and analytical results (for both liquid and gaseous flows) is presented in this paper. Interestingly, the effect of surface roughness on heat transfer does not seem to have been investigated thoroughly, as it has been observed to play a key role in influencing heat transfer at small diameters. The state-of-art review thus provides the contemporary experimenters in the field of mini-micro channel heat transfer, this tabulated data that can be used to understand how the different parameters affect the heat transfer in these small scales and a data-bank to validate future numerical and experimental work. The present study identifies the various factors that have contributed in the disparity of results found in the literature and finds that there is a need to investigate certain issues like the effects of roughness, diameter, and secondary flow due to buoyancy on heat transfer and transition. Moreover, it was observed that the start and end of the transition region at these small diameters are not validated by the any of the existing macro-scale correlations.

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Methodology of Inventory the Real Estate Components for the Purpose of Their Valuation Due to Road Construction – Case Study in Krakow

Proccedings of 10th International Conference "Environmental Engineering" ◽

10.3846/enviro.2017.240 ◽

2017 ◽

Author(s):

Monika Siejka ◽

Monika Mika

Keyword(s):

Real Estate ◽

Communication Systems ◽

Road Network ◽

Measurement Techniques ◽

Road Construction ◽

The Real ◽

The Real Estate ◽

The Road ◽

Investment Process

The development of the communication systems determines the economic level of the country. In Poland, despite the successive investments in this area, it is still not enough beneficial solutions to the road network and international calls. The problem of the acquisition of property for public roads on both the valuation principles and the way of obtaining land for these purposes is constantly modified. These changes are intended to simplify the procedures, which have a significant impact on shortening of the investment process. The current provisions of law give the possibility of the start of road investment before a property owner receives compensation for land taken for this purpose. This situation requires an inventory of component parts of the property for the purposes of their valuation. The paper presents the methodology of inventory the real estate components for the needs of their valuation using modern measurement techniques GNSS and GIS.

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Abrasive flow finishing for surface roughness improvement of aluminum propeller: A case study

Materials Today Proceedings ◽

10.1016/j.matpr.2020.02.223 ◽

2020 ◽

Vol 26 ◽

pp. 1113-1118

Author(s):

M.A. Manjunath ◽

Prakash Vinod ◽

N. Balashanmugam ◽

M.R. Sankar

Keyword(s):

Surface Roughness ◽

Abrasive Flow Finishing

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Scale-Optimized Surface Roughness for Topographic Analysis

Geosciences ◽

10.3390/geosciences9070322 ◽

2019 ◽

Vol 9 (7) ◽

pp. 322 ◽

Cited By ~ 5

Author(s):

John B. Lindsay ◽

Daniel R. Newman ◽

Anthony Francioni

Keyword(s):

Surface Roughness ◽

Forest Cover ◽

Agricultural Land ◽

Spatial Scales ◽

Grid Cell ◽

Topographic Analysis ◽

Digital Elevation ◽

Locally Adaptive ◽

Elevation Model

Surface roughness is a terrain parameter that has been widely applied to the study of geomorphological processes. One of the main challenges in studying roughness is its highly scale-dependent nature. Determining appropriate mapping scales in topographically heterogenous landscapes can be difficult. A method is presented for estimating multiscale surface roughness based on the standard deviation of surface normals. This method utilizes scale partitioning and integral image processing to isolate scales of surface complexity. The computational efficiency of the method enables high scale sampling density and identification of maximum roughness for each grid cell in a digital elevation model (DEM). The approach was applied to a 0.5 m resolution LiDAR DEM of a 210 km2 area near Brantford, Canada. The case study demonstrated substantial heterogeneity in roughness properties. At shorter scales, tillage patterns and other micro-topography associated with ground beneath forest cover dominated roughness scale signatures. Extensive agricultural land-use resulted in 35.6% of the site exhibiting maximum roughness at micro-topographic scales. At larger spatial scales, rolling morainal topography and fluvial landforms, including incised channels and meander cut banks, were associated with maximum surface roughness. This method allowed for roughness mapping at spatial scales that are locally adapted to the topographic context of each individual grid cell within a DEM. Furthermore, the analysis revealed significant differences in roughness characteristics among soil texture categories, demonstrating the practical utility of locally adaptive, scale-optimized roughness.

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