Time of Flight Diffraction (TOFD) course
The purpose of Time of Flight Diffraction (TOFD) course is to prepares student for Time of Flight Diffraction (TOFD) Inspections and Prerequisite for Time of Flight Diffraction (TOFD) Class is Level II Ultrasonics.
There are sample Time of Flight Diffraction (TOFD) scope:
• Select Probes
• TOFD formulas
• Perform Specific Calibrations
• Specific TOFD scanning
• Collect and store data
• Interpret data
• Locate and Size flaws
• Record Results
• TOFD Codes and Standards
There are sample Time of Flight Diffraction (TOFD) course module:
Time of Flight Diffraction (TOFD)module 1: TOFD BACKGROUND
• Principles of TOFD
• Basic TOFD Setup
• Diffraction Process
• Advantages and Limitations of TOFD
Time of Flight Diffraction (TOFD)module 2: TOFD FORMULAS
• Basic Formulas
• Calculation of internal flaw height Depth
• Calculation of ID crack Depth
• Accounting for phase reversal
Time of Flight Diffraction (TOFD)module 3: HARDWARE
• Basic Hardware
• Sampling Rate
• Advantages of digital Recording
• Grey Scale vs Color Imaging
• Amount of Data Collected during B-scans
• Advantages and disadvantages of Signal Averaging Time of Flight Diffraction (TOFD)module 4: TRANSDUCER SELECTION AND PROBE SETUP
• Transducer Size
• Transducer Frequency
• Transducer Refracted Angle
• Transducer damping
• Transducer Frequency – Fine grain and coarse grain materials
• Probe separation
• Transducer frequency and sampling rate
• Beam spread
Time of Flight Diffraction (TOFD)module 5: INSTRUMENT SETUP
• Entering UT Parameters
• Entering Probe Separation
• Entering Part Thickness
• Calibration settings as per European TS 14751
• Calibration settings as per ASTM 2373
Time of Flight Diffraction (TOFD)module 6: INSPECTION SCANNING
• Manual Scanning
• Mechanical Scanning
• Calibrating the Encoder
• Setting the Origin, Scan Area, Start, Stop
• Acquiring Data
Time of Flight Diffraction (TOFD)module 7: ANALYSIS SOFTWARE
• Saving Data
• Linearization
• Activating Cursors
• Accounting For Phase Reversal
• Measuring Flaw Height
• Creating a Data Table
• Measuring Flaw Length
Time of Flight Diffraction (TOFD)module 8: COMMON FAULTS
• No signals
• Improper range
• Gain - too Low
• Works well during calibration but not during inspection scanning
• Signal to Noise ratio problems
• Loss of Couplant
• Near Surface problems
Time of Flight Diffraction (TOFD)module 9: CODES AND STANDARDS
• British Standard 7706
• European TS 14751
• ASME Section V, Article 4 (2007)
• ASTM 2373
by online welding courses – non destructive testing
Comments
0 Responses to "Time of Flight Diffraction (TOFD) course"