scholarly journals Perancangan Alat Ukur Massa Jenis Zat Cair Menggunakan Cepat Rambat Gelombang Ultrasonik

2018 ◽  
Vol 8 (2) ◽  
pp. 143
Author(s):  
Nanda Bagus Prawira ◽  
Abdul Rouf
Keyword(s):  
Ultrasonic Velocity ◽  
Velocity Measurement ◽  
Time Synchronization ◽  
Soap Solution ◽  
Signal Pulse ◽  
Liquid Soap ◽  
Transmission Method ◽  
Cooking Oil ◽  
Ultrasonic Transmitter ◽  
Measurement Deviation

Density is a measure of the mass of volume unity. How to measure density in general by measuring the weight and dividing it by the volume of liquid, so in this way the measurement is not. Measurement of the density of the liquid based on the ultrasonic velocity becomes an alternative so that the measurement can be done directly, accurately, practically, and easily.Ultrasonic velocity becomes the variable to determine the density of the liquid. Time synchronization begins when the ultrasonic transmitter emits ultrasonic and is terminated when the receiver receives ultrasonic. The discrete ultrasonic wave transmission method is performed when the ultrasonic receiver receives transmittance from the ultrasonic transmitter then the 40KHz signal pulse is stopped and ultrasonic transmission is repeated up to 10 times the measurement data.From this study obtained some conclusions. Ultrasonic velocity is influenced by the viscosity of the liquid, ultrasonic velocity through 1394m / s aquades, ultrasonic  velocity through cooking oil 1387m / s, ultrasonic velocity through liquid soap 1175m / s, ultrasonic velocity through liquid soap solution 40% 1317m / s , Ultrasonic velocity through liquid soap solution 70% 1257m / s, velocity measurement deviation of 0.43% and 0.01% density calculation type.

Ultrasonic velocity measurement of crystallization rates of palm oil in oil-water emulsions

1997 ◽  
Vol 128 (1-3) ◽  
pp. 217-224 ◽  
Author(s):  
Y. Hodate ◽  
S. Ueno ◽  
J. Yano ◽  
T. Katsuragi ◽  
Y. Tezuka ◽  
...  
Keyword(s):  
Ultrasonic Velocity ◽  
Palm Oil ◽  
Velocity Measurement ◽  
Oil Water

Monitoring Crystallization in Simple and Mixed Oil-in-Water Emulsions using Ultrasonic Velocity Measurement

1991 ◽  
pp. 171-179 ◽  
Author(s):  
Eric Dickinson ◽  
Michael I. Goller ◽  
D. Julian McClements ◽  
Malcolm J.W. Povey
Keyword(s):  
Ultrasonic Velocity ◽  
Velocity Measurement ◽  
Oil In Water ◽  
Mixed Oil

Ultrasonic Inspection of Carbon/ Phenolic Composites Using a Peak-Delay Measurement Method

2006 ◽  
Vol 321-323 ◽  
pp. 889-892
Author(s):  
In Young Yang ◽  
Kwang Hee Im ◽  
David K. Hsu ◽  
Sung Jin Song ◽  
Hyeon Cho ◽  
...  
Keyword(s):  
Ultrasonic Velocity ◽  
Measurement Method ◽  
Structural Integrity ◽  
Elevated Temperatures ◽  
Ultrasonic Inspection ◽  
Carbon Matrix ◽  
Transmission Method ◽  
Aerospace Applications ◽  
Delay Measurement ◽  
Overlap Method

Carbon/phenolic composite (CPC) materials are unique which consist of carbon fibers embedded in a carbon matrix. The CPCs are originally developed for aerospace applications and its low density, high thermal conductivity and excellent mechanical properties at elevated temperatures make it an ideal material for aircraft brake disks. The properties of the CPC are dependent on the manufacturing methods used for production and fiber arrangement. It is desirable to perform nondestructive evaluation to assess material properties and part homogeneity in order to ensure product quality and structural integrity of CPC brake disks. In this work, a CPC material was nondestructively characterized and a technique was developed to measure ultrasonic velocity in C/P composites using automated data acquisition software. Also a motorized system was adopted to measure ultrasonic velocity on the point of CPC materials under the same coupling conditions. Manual results were compared with those obtained by the motorized system with using drycoupling ultrasonics and through transmission method in immersion. A peak-delay measurement method well corresponded to ultrasonic velocities of the pulse overlap method and throughtransmission mode and C-scan image signal based on peak-to-peak amplitude.

A remote laser system for ultrasonic velocity measurement at high temperatures

1988 ◽  
Vol 63 (4) ◽  
pp. 1225-1227 ◽  
Author(s):  
R. J. Dewhurst ◽  
C. Edwards ◽  
A. D. W. McKie ◽  
S. B. Palmer
Keyword(s):  
Ultrasonic Velocity ◽  
High Temperatures ◽  
Velocity Measurement ◽  
Laser System

Study on Measurement of Polymer Orientation Degree Base on SVM

2011 ◽  
Vol 314-316 ◽  
pp. 2389-2393 ◽  
Author(s):  
Yan Wang ◽  
Wei Guo Lin ◽  
Hong Xu ◽  
Tao Liu
Keyword(s):  
Ultrasonic Velocity ◽  
Polymer Material ◽  
Velocity Measurement ◽  
Extrusion Direction ◽  
Measurement Model ◽  
Test Results ◽  
Ultrasonic Velocities ◽  
Orientation Degree ◽  
Online Test ◽  
The Relationship

Aiming at the difficulty of measuring orientation degree of polymer material online, a soft-sensing approach based on ultrasonic velocity measurement is proposed．Firstly, the ultrasonic velocities of polymer samples are measured using a DSP-based ultrasonic velocity measurement circuit, with the ultrasonic sensor perpendicular to the extrusion direction of polymer material, the orientation degrees of samples are calibrated with infrared spectroscopy, the relationship between the ultrasonic velocities and the orientation degrees are then established based on SVM. With the measurement model and the ultrasonic velocity measured online, the orientation degree of polymer material can then be measured online. Test results in Lab shows that this approach can implement accurate measurement, and the relative error is about 5%.

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