Ultrasonic transducer – An Innovative Development In Ultrasonic
Introduction:
An Ultrasonic transducer is a device which converts some other type of energy into an ultrasonic vibration. An Ultrasonic transducer produces sound waves that bounce off body tissues and make echoes. The transducer moreover receives the echoes and sends them to a computer which uses them to create a picture called a sonogram. These transducers are an extremely important and critical part of any ultrasonic test. Features including instrument conditions and settings, material properties, and coupling conditions will likewise affect test results.
Types Of Ultrasonic transducer:
Ultrasonic transducers are manufactured for a diversity of applications and can be custom fabricated when needed. Selection of proper Ultrasonic transducer for a particular application is very important. It is imperative to pick out transducers that have the desired frequency, bandwidth, and focusing to optimize inspection capacity. An Ultrasonic transducer itself is a device capable of generating and receiving ultrasonic vibrations.
Contact transducers - Contact Ultrasonic Transducers are the most common frequently used transducers to introduce longitudinal waves into a material. This type of transducer is utilized in direct contact with the test material and hence requires a highly durable wear-plate and generally hand manipulated. Ultrasonic transducers contain elements protected in a rugged casing to bear up sliding contact with a variety of materials. Contact Ultrasonic transducers consist of an unpolluted polymeric film layer and a poled piezo film layer. There are two types of contact Ultrasonic transducers standard contact and fingertip contact. Contact transducers are offered in a variety of configurations for improving their usefulness for a range of applications. A flat contact Ultrasonic transducer is used in normal beam inspections of relatively flat surfaces.
Immersion transducers - Immersion Ultrasonic transducers are specially designed to transmit ultrasound in applications in where the test parts are either partially or wholly immersed in water, allowing a uniform and fast coupling technique for rapid scanning of parts. In addition to this Ultrasonic transducers can also be used for the precise measurement of wall thicknesses. Ultrasonic transducers uniform coupling feature reduces variations in sensitivity. These Ultrasonic transducers are designed to operate in a liquid environment where all connections are watertight. Ultrasonic transducers help to get more sound energy into the water and, in turn, into the component being inspected. A spherically focused Ultrasonic transducer improves the sensitivity to small flaws and defects whereas a cylindrical focused transducer is used in the measurement of tubing raw stock.
Conclusions:
Ultrasonic transducers are used in variety of industries for non-destructive testing (NDT) of materials. They are used for the precise location of objects and the safe and reliable detection and valuation of defects. The stability of parameters such as nominal frequency, bandwidth and oscillator diameter over a long period is a sign of the reliability of the transducer. Probes and transducers help to meet demanding inspection necessities with high quality probes and transducers in different frequencies, configurations, connector styles, and cable types. Ultrasonic transducers are crucial components in sensors for distance, flow and level measurement and also in power, biomedical and additional applications of ultrasound.