Ultrasonic Testing

Ultrasonic Testing (UT)

In most common UT applications, very short ultrasonic pulse-waves with center frequencies ranging from 0.1-15 MHz, and occasionally up to 50 MHz, are transmitted into materials to detect internal flaws or to characterize materials. It is used in many industries including steel and aluminium,construction,metallurgy,manufacturing, aerospace, automotive &other transportation sectors. In service ultrasonic testing for preventive maintenance is used for detecting impending failure of rail road rolling stock axles, press columns, earth-moving equipment, mill rolls, mining equipment and other machines and components. The flaws to be detected include voids, cracks, inclusions, pipe, laminations, bursts and flakes. They may be inherent in the raw materials, may result from fabrication and heat treatment, or may occur in service from fatigue, corrosion or other causes. Ultrasonic testing can also be used to measure thickness of metal sections during manufacturing and maintenance inspections.

Ultrasonic Thickness Guaging (UTG)

Confirmation of component thickness can assist in the determination of life expectancy of any part. Ultrasonic Thickness Gages accurately measure wall thickness and corrosion of all metals, including steel and aluminum, plastic, ceramics and others. Thickness gauging is a method of performing non-destructive measurement (gauging) of the local thickness of a solid element (typically made of metal, if using ultrasound testing for industrial purposes) basing on the time taken by the ultrasound wave to return to the surface. This type of measurement is typically performed with an ultrasonic thickness gauge.

UT Applications Includes

  • Castings
  • Forgings
  • Plates
  • Weld joints
  • Electrical and electronic component manufacturing
  • Production of steel
  • Aluminum
  • Titanium
  • Fabrication of structures such as air frames
  • Pressure vessels
  • Ships
  • Bridges
  • Motor vehicles
  • Machinery

Ultrasonic Testing Advantages

  • Does not require access to both sides of the sample
  • Can be engineered to cope with coatings, linings, etc
  • Good accuracy (0.1 mm and less) can be achieved using standard timing techniques
  • Can be easily deployed, does not require laboratory conditions
  • Digital UTM gives directly Thickness on display

Multi-Mode thickness gauge Machines that has the ability to measure through painted or coated surfaces and eliminate the thickness of the paint using a dual element style transducer in echo-echo mode