Header menu link for other important links
X
Viscosity measurements of melts at high temperatures using ultrasonic guided waves
Veena Sastha K. Prasad, , Elankumaran Kannan
Published in
2008
Volume: 207
   
Issue: 1-3
Pages: 315 - 320
Abstract
This paper describes an experimental procedure using ultrasonic waves propagating in a rod to simultaneously measure the viscosity and temperature of melts at high temperatures using a very small amount of sample and without any mechanical rotating equipment. This method has applications in laboratory tests as well as for process monitoring in industries. A refractory material is used as buffer rod in the experiment to transfer the ultrasonic vibrations from a piezoelectric transducer into the melt, which is water cooled to protect the transducer from high temperatures. The sensor is based on the effect of melt viscosity on ultrasonic guided wave reflections from the solid-fluid interface. The difference in the time of flight of the ultrasonic wave in the buffer rod at two different temperatures is used to measure the temperature. The results from the measurement of melt viscosity using the proposed method, on three different glass samples, are in agreement with the values provided by the National Institute of Standards and Technology, USA. This method offers advantages in reduction in the amount of sample, cost, complexity in experiments, experimental time. © 2008 Elsevier B.V. All rights reserved.
About the journal
JournalJournal of Materials Processing Technology
ISSN09240136
Open AccessNo
Concepts (21)
  •  related image
    Acoustic waves
  •  related image
    Chlorine compounds
  •  related image
    Computer networks
  •  related image
    Experiments
  •  related image
    Guided electromagnetic wave propagation
  •  related image
    Hydrodynamics
  •  related image
    Offshore oil well production
  •  related image
    Piezoelectric transducers
  •  related image
    Process engineering
  •  related image
    Process monitoring
  •  related image
    REFRACTORY MATERIALS
  •  related image
    Transducers
  •  related image
    Ultrasonic waves
  •  related image
    Viscosity
  •  related image
    Viscosity measurement
  •  related image
    BUFFER ROD
  •  related image
    Glass
  •  related image
    High temperatures
  •  related image
    REFLECTION FACTOR
  •  related image
    Ultrasonic guided wave
  •  related image
    Ultrasonics