NDT - UltraSonic Testing (Beam Explained) Session 02

Ultra sound beam

An Ultrasonic Beam produced by piexo electric crystal. Electricity is used to excite the crystal hence forth making it vibrate , the vibrational(mechanical) energy

is converted to waves which are used in the testing process.

An ultrasound beam consist of three zones

1.     Dead Zone

Its is referred distance travelled by wave during as crystal ringing time / crystal vibration time. Every probe has independent crystal ringing time .  No defects will be captured during this time.

2.     Near Zone

Near zone is adjacent to Dead zone. In Near Zone the intensity of sound is varying and does not have any consistence. Hence the defects detected in this zone    is either magnified or diminished once when compared with the actual defect due to varying sound intensity

3.     Far Zone

Far zone is the ideal zone for observing the defects. Here the intensity of sound decreases gradually / periodically, which means there exist a consistency for sound waves in the Far Zone.

Related blogs :

http://techshoreinspections.blogspot.com/2017/01/Techshore-Inspection-Services-ndt-ultrasonic-testing.html
http://techshoreinspections.blogspot.com/2016/12/Techshore-Inspection-Services-liquid-penetrant-test.html
http://techshoreinspections.blogspot.com/2016/10/ultrasound-testing-techniques-contact.html
http://techshoreinspections.blogspot.com/2016/10/ultrasound-testing-technique-through.html
http://techshoreinspections.blogspot.com/2016/10/ultrasound-testing-techniques-pulse.html
http://techshoreinspections.blogspot.com/2016/10/ultrasonic-testing-techniques.html
http://techshoreinspections.blogspot.com/2016/10/ultrasound-generation-principles-of.html
http://techshoreinspections.blogspot.com/2016/10/ndt-ultrasonic-testing-beam-explained.html
http://techshoreinspections.blogspot.com/2016/10/introduction-to-ndt-non-destructive.html
http://techshoreinspections.blogspot.com/2016/09/techshore-non-destructive-testing-ndt.html
http://techshoreinspections.blogspot.com/2016/09/techshore-inspection-services-explains_6.html

Documents : 

https://www.slideshare.net/techshoreinspectionservices/civil-engineering-process-of-well-treatment-techshore
https://www.slideshare.net/techshoreinspectionservices/ndt-ultrasonic-testing-techshore
https://www.slideshare.net/techshoreinspectionservices/ndt-liquid-penetration-test-techshore

Additional references:
https://www.youtube.com/channel/UCfufdF0-Hs3sLu1IX52ZJYA/videos
http://techshore.in/blog
http://techshore-updates.blogspot.in/
https://techshore-inspection-services.blogspot.in/
https://techshoreinspectionservices.blogspot.in/
https://techshoreinspections.blogspot.in/


You Tube Tutorials :
https://www.youtube.com/watch?v=bfW1eL0aTlU
https://www.youtube.com/watch?v=URlwZ3R94u8
https://www.youtube.com/watch?v=6w9Cl58-p34
https://www.youtube.com/watch?v=ZVnsx5VC77g
https://www.youtube.com/watch?v=3ZD4je9Fbn8