Short review on in situ measurement techniques of impedance or absorption

2007 ◽  
Vol 121 (5) ◽  
pp. 3029-3029
Author(s):  
Christian Nocke
Keyword(s):  
Measurement Techniques ◽  
Short Review ◽  
In Situ Measurement

Water Resource Management

2022 ◽  
pp. 197-218
Author(s):  
Satya Prakash ◽  
Pinakana Sai Deepak
Keyword(s):  
Big Data ◽  
Resource Management ◽  
Water Resource ◽  
Water Resource Management ◽  
Satellite Images ◽  
Measurement Techniques ◽  
Satellite Image ◽  
Quality Parameters ◽  
In Situ Measurement

Water is an essential component for the survival of mankind and for balancing the ecosystem and livelihood. The world is experiencing a scarcity of water, both in terms of quality and quantity. Although there are several in-situ measurement techniques, they seem insufficient for large areas involving several parameters. Analysis of satellite images for estimating the quality and quantity of natural water has become an accepted tool for better spatial planning. With the increase in variety, volume, and velocity of satellite image, a tool for faster and accurate processing of the data is needed. Google Earth Engine (GEE) is one such cloud-based geo-big data platform. This chapter reviews the work of several researchers worldwide who have used and demonstrated the capability of satellite images with other geo-big data such as elevation, landcover, etc. for water resource management on the GEE platform. It can be concluded from the review work that GEE can help in estimating the water quality parameters with reasonable accuracy, comparable to the in-situ measurement, albeit quickly.

scholarly journals Non-intrusive measurement of strip thickness and roll-bite length in metal rolling

2020 ◽  
Vol 234 (10) ◽  
pp. 1283-1292
Author(s):  
GJ Adeyemi ◽  
RS Dwyer-Joyce ◽  
C Pinna ◽  
A Hunter ◽  
JT Stephen ◽  
...  
Keyword(s):  
Measurement Techniques ◽  
Piezoelectric Element ◽  
Rolling Process ◽  
Ultrasonic Pulse ◽  
Strip Thickness ◽  
In Situ Measurement ◽  
Rolled Strip ◽  
Thickness Standard ◽  
Roll Bite

It is important to monitor the rolled strip thickness standard to minimize material waste and loss of profit due to strip flatness defects, and also to maintain the product’s size and dimensional homogeneity. Several online measurement techniques are available but none of this can give an in situ measurement within the roll bite. Due to this, a novice experimental method utilizing ultrasonic reflection sensor mounted on one roll was developed for in situ measurement of strip thickness and roll-bite length during cold rolling process. A pitch–catch method was used whereby a piezoelectric element generated an ultrasonic pulse and transmitted to the contact interface evaluated on a pilot mill. The reflected signal was captured by a second piezoelectric element and analysed to determine the condition at the strip–roll interface. This approach was implemented on a pilot mill and reflections from various locations in the roll bite during the rolling were recorded. Recorded signals were used to estimate the rolled strip thickness and roll-bite length after the rolling process.

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