Where is ultrasonic testing used

Start Learning English Hindi. This question was previously asked in. Attempt Online. Cracks below the surface Yield strength Ultimate tensile strength Hardness. Start Now. Explanation: To detect such defects without damaging the weld, several techniques are employed, known as non-destructive testing NDT.

Some commonly used NDT methods are outlined below. This test is used to find out the discontinuities in the weldment. The sound waves can penetrate from a very small thickness of plate to 6 to 10 m of steel. This method uses echo signals at an interface, such as the back of the object or an imperfection, to reflect the waves back to the probe.

Through-transmission testing uses an emitter to send the ultrasound waves from one surface and a separate receiver to receive the sound energy that has reached the opposite side of the object.

Imperfections in the material reduce the amount of sound that is received, allowing the location of flaws to be detected. Ultrasonic testing can also be split into two main types: contact or immersion testing. Contact ultrasonic testing is typically used for on-site inspections accessibility or portability. Contact ultrasonic inspection can be performed where only one side of a test specimen as reachable, or where the parts to be tested are large, irregular in shape or difficult to transport.

Immersion ultrasonic testing is a laboratory-based or factory-based non-destructive test that is best suited to curved components, complex geometries and for ultrasonic technique development. In this method, the component or material is submerged in a water, which acts as a couplant in place of the gels used for contact ultrasound.

Immersion UT generally uses pulse-echo method, and robotic probe trajectories can be used to inspect complex surfaces which would be hard to cover with contact probes. Immersion UT can be used for a wide range of wall thickness and material types, making it a suitable testing method for a variety of applications and industries.

As a non-destructive testing method, ultrasonic testing is ideal for detecting flaws and defects without damaging the object or material being tested. Periodic ultrasonic inspections can also be used to check for corrosion or for growth of known flaws, and thus potentially prevent to a failure of a part, component or entire asset.

This measurement can be made fast and effectively and there is no need to have any access to the inside of the component, or to have any tanks emptied. When sound waves travel through a material, they will reflect in predictable ways off flaws such as cracks and voids.

An ultrasonic flaw detector is an instrument that gives off and processes ultrasonic signals that can be used by a trained professional to find flaws in a test piece, that might otherwise be hidden. In fact, they can be used to find any issues that might affect structural integrity. Ultrasonic flaw detectors are used in safety and quality related applications that involve:.

An ultrasonic transducer is a device that turns one form of energy into another. It will convert electrical energy into mechanical vibrations, and also sound waves into electrical energy. They are often small, hand held pieces of equipment, that come in a wide variety of frequencies so that they can accommodate the needs of the specific tests they are being used for.

Ultrasonic imaging systems can also be used to generate highly detailed pictures that are similar to x rays. These will map the internal structure of a part using sound waves. Phased array technology, which was originally developed for medical diagnostic imaging is used in some industrial situations in order to create cross-sectional pictures. Within the aerospace industry and also in metalworks, large scanning systems are used to check for hidden flaws in both the raw materials and also in the finished parts.

Format NDT work with a team of highly trained professionals to provide all forms of non-destructive testing across a wide range of industries. If you would like to find out more about the services we offer, or how we can help you specifically with ultrasonic testing, then contact us today on Client Logins. Ultrasonic testing is most capable of detecting early occurrences that could jeopardize operations within the power generation , railway , and aerospace industries, for example.

The decision to use an ultrasonic testing technique over another lies in how easily, quickly, and accurately the inspection can be performed. In addition to speed and accuracy, the best ultrasonic inspection equipment affords enhanced safety and asset longevity. Zetec provides exceptional ultrasound testing equipment for nearly every industry. To find the NDT equipment which best suits your testing needs, contact us today!

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