Digital ultrasonic pulse-echo overlap system and algorithm for unambiguous determination of pulse transit time

2005 ◽  
Vol 76 (11) ◽  
pp. 114902 ◽  
Author(s):  
Cristian Pantea ◽  
Dwight G. Rickel ◽  
Albert Migliori ◽  
Robert G. Leisure ◽  
Jianzhong Zhang ◽  
...  
Keyword(s):  
Transit Time ◽  
Pulse Transit Time ◽  
Ultrasonic Pulse ◽  
Unambiguous Determination ◽  
Pulse Echo

scholarly journals ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY

2019 ◽  
Vol 22 ◽  
pp. 48-51
Author(s):  
Dalibor Kocáb ◽  
Petr Misák ◽  
Barbora Jindrová ◽  
Martin Alexa ◽  
Tomáš Vymazal
Keyword(s):  
Statistical Analysis ◽  
Transit Time ◽  
Concrete Slab ◽  
Pulse Transit Time ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Ultrasonic Measurement ◽  
Transducer Frequency

The paper analyses the influence of transducer frequency on the determination of concrete homogeneity using the ultrasonic pulse velocity test. Transit time measurements were made on a 590×590mm concrete slab, with 110mm in thickness, in a raster of 5×5 points, which means the slab was tested in 25 places. The tests were made using a Pundit PL-200 ultrasonic tester using transducers set at 54, 82, and 150 kHz. Two types of measurements were performed – spot measurements of the ultrasonic pulse transit time at each point and full area scanning. The paper is concluded by an evaluation of the concrete slab’s homogeneity measured by different transducers and techniques in addition to a statistical analysis of how the results are affected by the transducer frequency.

Determination of absorption and structural properties of cellulose-based hydrogel via ultrasonic pulse-echo time-of-flight approach

Cellulose ◽  
2018 ◽  
Vol 25 (8) ◽  
pp. 4331-4343 ◽  
Author(s):  
Leonardo Lamanna ◽  
Francesco Rizzi ◽  
Christian Demitri ◽  
Marco Pisanello ◽  
Elisa Scarpa ◽  
...  
Keyword(s):  
Structural Properties ◽  
Time Of Flight ◽  
Ultrasonic Pulse ◽  
Echo Time ◽  
Pulse Echo

scholarly journals Modeling of arterial stiffness using variations of pulse transit time

2013 ◽  
Vol 10 (1) ◽  
pp. 547-565 ◽  
Author(s):  
Aleksandar Peulic ◽  
Natasa Milojevic ◽  
Emil Jovanov ◽  
Milos Radovic ◽  
Igor Saveljic ◽  
...  
Keyword(s):  
Finite Element ◽  
Arterial Stiffness ◽  
Transit Time ◽  
Pulse Transit Time ◽  
Element Model ◽  
Elastic Behavior ◽  
Structure Model ◽  
Breathing Patterns ◽  
Fitting Procedure

In this paper, a finite element (FE) modeling is used to model effects of the arterial stiffness on the different signal patterns of the pulse transit time (PTT). Several different breathing patterns of the three subjects are measured with PTT signal and corresponding finite element model of the straight elastic artery is applied. The computational fluid-structure model provides arterial elastic behavior and fitting procedure was applied in order to estimate Young?s module of stiffness of the artery. It was found that approximately same elastic Young?s module can be fitted for specific subject with different breathing patterns which validate this methodology for possible noninvasive determination of the arterial stiffness.

scholarly journals Young’s Modulus Determination of Polyester and Epoxy by Means of Ultrasonic Pulse Echo Testing

2019 ◽  
Vol 547 ◽  
pp. 012045
Author(s):  
Firmansyah Sasmita ◽  
Thea Athalia Candra ◽  
Hermawan Judawisastra ◽  
Toni Agung Priambodo
Keyword(s):  
Young’S Modulus ◽  
Young's Modulus ◽  
Ultrasonic Pulse ◽  
Pulse Echo

Ultrasonic pulse-echo determination of thermal injury in deep dermal burns

1977 ◽  
Vol 4 (3) ◽  
pp. 259-263 ◽  
Author(s):  
Ronald E. Goans ◽  
John H. Cantrell ◽  
F. Bradford Meyers
Keyword(s):  
Thermal Injury ◽  
Ultrasonic Pulse ◽  
Pulse Echo
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