are purchasing these types of machines so they can sew extra large thread sizes up to Tex 500 or Tex 600 thread sizes. Another option for sewing heavy threads on 301 lockstitch machines is to sew the heavy thread in the bobbin and using a regular size thread in the needle. This means that the seam is inverted when it is sewn.
Ultrasonic Flaw Detectors range from easy-to-use, Hand-held Ultrasonic Flaw Detectors to Phased Array Ultrasonic Flaw Detectors for many Ultrasonic Flaw Detection Applications including Crack Detection, Weld Inspection, Defect Sizing and more... SUPOR-Super Idea for Ultrasonic Inspection.
Ultrasonic sensors are based on measuring the properties of sound waves with frequency above the human audible range. They are based on three physical principles: time of flight, the Doppler effect, and the attenuation of sound waves. Ultrasonic sensors are non-intrusive in that they do not require physical contact with their target, and can detect certain clear or shiny targets otherwise obscured to some vision-based sensors. On the other hand, their measurements are very sensitive to temperature and to the angle of the target.