Explain how defects in a metal block can be detected using ultrasound.

Defects in metal blocks do not allow ultrasound to pass through them, and they are reflected. This fact is used to detect defects in metal blocks. Ultrasound is passed through one end of a metal block, and detectors are placed on the other end. The defective part of the metal block does not allow ultrasound to pass through it. As a result, it will not be detected by the detector. Hence, defects in metal blocks can be detected using ultrasound.

Other uses of ultrasound

Ultrasound imaging uses sound waves to produce pictures of the inside of the body.

  • It is used to help diagnose the causes of pain, swelling and infection in the body’s internal organs
  • Doctors can use ultrasounds to diagnose conditions, including those in the heart, blood vessels, liver, gallbladder, spleen, pancreas, kidneys
  • An ultrasound scan can be used to monitor an unborn baby

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