Ultrasonic Lamination Checking

Laminating of nonwoven materials using ultrasonics.

Ultrasonic lamination checking.

Before ordering the pipes check the astm specification for any supplementary requirements that puts a check on inclusions etc. The general principle of ultrasonic welding can also be applied to nonwoven materials. Ghulam welcome to the forum. Minimum thickness to perform lamination check using ut in reply to ghulam husain at 11 02 mar 23 2016 opening.

Plate lamination defect detection. There are several methods of inclusion detection in the carbon steel plates such as. Ultrasonic examination has been utilised as a non destructive testing method to carry out a wide variety of testing tasks enabling the equipment to conduct internal examination and make measurements of a component. What screen range ıs your machıne calıbrated for.

A weld tool referred to as sonotrode transmits the vibration into the nonwoven material. These are readily detectable yet not rejectable. The ultrasonic vibrations are transmitted into the material to be tested using a couplant such as grease paste or water which helps transmission of the vibrations. I would use the 10 mhz tr probe and calıbrate the tımebase range for 10mm or 20mm.

The presence of inclusions in the carbon steel plates provides the reliable assessment of possible lamination defects. Ultrasonic lamination uses the conversion of acoustic energy to heat to form spot welds of specific size in exact locations. The better the surface finish then the better is the coupling and the more searching the examination hence there is sometimes a requirement to grind smooth the weld cap and remove the root penetration bead on welded joints. If you mt the edge of our flame cut plates the lamination is a very sharp crack like indication at mid thickness some are 3 inches long.

You can find out lamination by ultrasonic testing. I have come across situations that after years of service lamination in large diameter pipes have been misreported as hic. The thermoplastic fibers are activated by mechanical vibrations thus melting and bonding in pre defined patterns. It is also a commonly accepted method of checking the wall thickness of pipelines tanks silos and vessels which are suspected of.