Metal Classifying Machine Using Ultrasonic Testing Method
Keywords:
Ultrasonic, Microcontroller, Metal, ClassificationAbstract
This paper presents the design and development of a metal classifying machine that uses ultrasonic wave. The machine consists of a frequency generator which uses a microcontroller to control the processes and create an ultrasonic wave of 40 kHz then sends it to the ultrasonic transducer. The transducer has a function that transfers the frequency to the object and receives the reflected wave from that particular object. For result evaluation, the reflected ultrasonic wave is transformed into an electrical wave and measures the intensity of the reflected sound wave at a specific time. Using this technique the machine can distinguish and differentiate metal types. Each type of objects has different density and structure. Therefore, The reflected intensity are also different. By testing these variables,The machine can classify eight different types of metal,Which are Steel,Copper,Brass ,Aluminum,Steel sheet pile,Stainless steel, Galvanized steel, And Polished aluminum ,Show differences clearly accuracy and high evaluation speed. Due to the small size and low cost price of the machine, it can be used in the industry efficiently.
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