For technicians who are already certified, but would benefit from a reminder of the fundamentals of ToFD, we are introducing a refresher eLearning package. This course is an excellent way to remind yourself of the underlying principles and skills required to conduct this type of inspection.
Refresher courses are available for 14 days of consecutive access from the date of activation. During that time they can be completed entirely at your own pace, with the option to repeat any sections as needed.
This course is eligible for Continuing Professional Development (CPD) credit hours.
CPD: 15 Credit
Duration: 15 hrs
Price: CA$ 549.00
Order nowThe Refresher eLearning Package is divided in three modules:
Module 1: Theory
Module 2: Exercises
Module 3: Self-evaluation Test
When you have booked your online training, you will receive an email notification with your login details.
SECTION 1: Basics
• NDT
• Sound versus Ultrasound
• Distance, velocity, cycle, material density
• Sine wave, frequency, wavelength
• dB system
• The shell of an ultrasound instrument, TOFD probes, TOFD wedges
• Pulser/receiver, square pulse
• Wave propagation, scattering, absorption, energy spreading
• Beam, sound field, beam diameter
• Through transmission, pulse echo, angle beam, immersion, PAUT
• A-Scan
• Structure and qualification of a procedure, training, acceptance criteria
• Calibration blocks, couplant
• Marking on part, probe positioning
• Naming files, storing data
• Section’s test
SECTION 2: ToFD Theory
• Butt welds
• Digital instrument, pulser/receiver, digitizer, filters, gain
• Probes, frequency spectrum, signal waveform
• Wedges, hard wedges
• Scanner, encoder
• Huygens’ principal, diffraction
• Snell’s law, incident vs. refracted, critical angles
• TOFD A-Scan, phase shift, phase difference, averaging
• PCS, transit time, depth calculation, height calculation, position uncertainty
• Beam spread, beam spread in-wedge, beam spread in-part, frequency spectrum
• Lateral wave, backwall, mode-converted backwall
• Dead zones, accuracy, resolution
• B-Scan, gray scale
• Whisker effect, parabolic cursors
• Non-parallel and parallel scans
• Multiple scans
• Influence of frequency on coverage, dead zones
Phasex Online Trainings 2023 Rev5
• Influence of wedge angle on time scale, coverage
• Influence of PCS on dead zones, resolution, coverage
• How to optimize the digitizing frequency, filters, averaging, time window, sensitivity,
PRF
• Calibration of the beam index point, velocity
• Scanning speed
• Wedge delay calibration, lateral wave straightening, lateral wave removal
• Interactive exercises
• Section’s test
SECTION 3: Evaluation
• B-Scan perspective
• Lateral wave, backwall and mode-converted backwall signals
• Effect of beam spread on depth and the backwall signal
• Indication classification, probe position vs. height, angle vs. height
• Geometrical indications, double-V welds, pipes misalignment, different wall thickness
• Data quality, calibration, basic analysis, detailed analysis
• Signal start, grouping, point-like indications
• Height and depth, top-surface breaking, bottom-surface breaking, embedded
• Length and position, parabolic shape, elongated and curved
• Interactive viewer, top-surface breaking, bottom-surface breaking, embedded
• Interactive exercises
• Section’s test
SECTION 4: review
• Hardware
• Scan & Views
• Basic Theory
• Setup
FINAL TEST
So that your computer can run the Phased Array eLearning modules you will need the following basic systems:
Operating System
Windows: 10 and higher
Browser
Chrome or Edge
Internet connection:
A decent internet connection (5 Mb/s)
To get an idea of what you can expect when you begin the course, and view some helpful tutorial videos , click the link below:
Please use the latest version of the browser Internet Explorer with Silverlight installed to view the tasters. Videos are best seen in full screen mode, exercises must be in full screen mode to work.