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Faizan
An ultrasound transducer is used in different applications such as measuring the distance based on sound reflection. The device has the ability to generate and picking up the ultrasounds thus helping you know the distance. An ultrasound transducer is made up of three main parts: piezoelectric crystal, wear plate, backing, Acoustic matching layer and Acoustic lens.
Piezoelectric crystal
This is the core of the transducer and it undergoes a series of rarefactions and compressions in order to convert electrical energy to ultrasonic energy and vice versa. On both sides of the crystal, there are electrodes. When you externally apply the crystal with vibration a voltage is generated. The crystal is divided into strip sections that are affixed with electrodes. The strips are the size of a piece of hair and they play a major role in helping the unit to measure distance.
Wearplate
The main role of the wear plate is to protect the piezoelectric crystal from the environment. The plate protects the crystal from wear and tear and corrosion. The unit also sometimes functions as an acoustic transformer between water, wedge, crystal, or delay line.
Backing material
This is a dense material that is very attenuative. Its main role is to absorb energy radiating from the back of the crystal thus controlling vibration. When the unit reduces the excessive vibration the element generates ultrasonic waves with a shorter pulse length thus improving the image resolution.
Acoustic matching layer
This layer is found between the object and piezoelectric element. Its role is to prevent the element from being reflected off a target due to a big difference in acoustic impendence between the object and piezoelectric element. The presence of the acoustic matching layer ensures that the generated waves efficiently enter the object. The layer is made from different resin materials that allow the unit to have adequate acoustic impendence value.
Acoustic lens
This is the gray part that resembles a rubber attached to the tip of the probe. When ultrasonic waves are transmitted from the probe, they spread and travel fast. The acoustic lens prevents the ultrasonic waves from spreading and focuses them in the slice direction in order to improve the image resolution.
Piezoelectric crystal
This is the core of the transducer and it undergoes a series of rarefactions and compressions in order to convert electrical energy to ultrasonic energy and vice versa. On both sides of the crystal, there are electrodes. When you externally apply the crystal with vibration a voltage is generated. The crystal is divided into strip sections that are affixed with electrodes. The strips are the size of a piece of hair and they play a major role in helping the unit to measure distance.
Wearplate
The main role of the wear plate is to protect the piezoelectric crystal from the environment. The plate protects the crystal from wear and tear and corrosion. The unit also sometimes functions as an acoustic transformer between water, wedge, crystal, or delay line.
Backing material
This is a dense material that is very attenuative. Its main role is to absorb energy radiating from the back of the crystal thus controlling vibration. When the unit reduces the excessive vibration the element generates ultrasonic waves with a shorter pulse length thus improving the image resolution.
Acoustic matching layer
This layer is found between the object and piezoelectric element. Its role is to prevent the element from being reflected off a target due to a big difference in acoustic impendence between the object and piezoelectric element. The presence of the acoustic matching layer ensures that the generated waves efficiently enter the object. The layer is made from different resin materials that allow the unit to have adequate acoustic impendence value.
Acoustic lens
This is the gray part that resembles a rubber attached to the tip of the probe. When ultrasonic waves are transmitted from the probe, they spread and travel fast. The acoustic lens prevents the ultrasonic waves from spreading and focuses them in the slice direction in order to improve the image resolution.
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