NDT Stands for Non-Destructive Testing. In Other Words, It Is A Way of
Testing Without Destroying. This Means That the Component- The Casting,
Weld or Forging, Can Continue to Be Used and That the Nondestructive
Testing Method Has Done No Harm. In Today's World Where New Materials
Are Being Developed, Older Materials and Bonding Methods Are Being
Subjected to Higher Pressures and Loads, NDT Ensures That Materials Can
Continue to Operate to Their Highest Capacity with The Assurance That
They Will Not Fail Within Predetermined Time Limits. NDT Can Be Used to
Ensure the Quality Right from Raw Material Stage Through Fabrication and
Processing to Pre-Service and In-Service Inspection. Apart from
Ensuring the Structural Integrity, Quality and Reliability of Components
and Plants, Today NDT Finds Extensive Applications for Condition
Monitoring, Residual Life Assessment, Energy Audit, Etc.
There Are Many NDT Techniques/Methods Used, Depending On Four Main Criteria:
Material Type
Defect Type
Defect Size
Defect Location
Liquid Penetrant Testing (PT)
Liquid Penetrant Testing Involves the Application of a Fluid with Low
Viscosity to The Material to Be Tested. This Fluid Seeps into Any
Defects Such as Cracks or Porosity Before A Developer Is Applied Which
Allows the Penetrant Liquid to Seep Upwards and Create A Visible
Indication of The Flaw. Liquid Penetrant Tests Can Be Conducted Using
Solvent Removable Penetrants, Water Washable Penetrants or
Post-Emulsifiable Penetrants. TWG INTERNATIONAL Providing Quality
Trainings on Liquid Penetrant Testing (PT) and all NDT Courses.
Magnetic Particle Testing (MT)
This NDT Process Uses Magnetic Fields to Find Discontinuities at or Near
the Surface of Ferromagnetic Materials. The Magnetic Field Can Be
Created with A Permanent Magnet or An Electromagnet, Which Requires A
Current to Be Applied.
The Magnetic Field Will Highlight Any Discontinuities as The Magnetic
Flux Lines Produce Leakage, Which Can Be Seen by Using Magnetic
Particles That Are Drawn into The Discontinuity. In Hyderabad Liquid
Penetrant Testing (PT) Trainings will be provided, TWG INTERNATIONAL
institute is best Known for Quality and NDT Courses.
Radiographic Testing (RT)
Radiographic Testing Uses Radiation Passed Through A Test Piece to
Detect Defects. X-Rays Are Commonly Used for Thin or Less Dense
Materials While Gamma Rays Are Used for Thicker or Denser Items. The
Results Can Be Processed Using Film Radiography, Computed Radiography,
Computed Tomography or Digital Radiography. Whichever Method Is Used,
The Radiation Will Show Discontinuities in The Material Due to The
Strength of The Radiation.
Ultrasonic Testing (UT)
Ultrasonic Testing Entails the Transmission of High Frequency Sound into
A Material to Interact with Features Within the Material That Reflect
Or Attenuate It. Ultrasonic Testing Is Broadly Divided Into Pulse Echo
(PE), Through Transmission (TT) And Time Of Flight Diffraction (TOFD).
Author Signature
TWG International NDT Training, NDT Training in Hyderabad, NDT Course in Hyderabad, NDT Training Institute in Hyderabad
https://technoworldgroup.com/q
0 Comments