Enhance your skills with our blended learning package for Time of Flight Diffraction (ToFD) training. This unique program combines eLearning modules with practical in-class training, leading to BS EN ISO 9712 certification.
With the flexibility of online modules, you can study at your own pace and convenience. The package focuses on essential concepts and principles, providing step-by-step guidance on setup, calibration, acquisition, and data analysis through interactive exercises.
After completing the eLearning component, you will attend a 5-day practical classroom training.
Note: For candidates enrolling in the blended learning course, access to the online materials must be provided at least 30 days prior to the start of the in-class training. This requirement is mandatory, so please plan accordingly.
This course is eligible for Continuing Professional Development (CPD) and Continuing Education Unit (CEU) credit hours.
CEU: 4 EIC
CPD: 40 Credit
Duration: 40 hrs
Price: CA$ 940.00
Order nowThe eLearning training course is divided in four modules:
Module 1: Basic
Module 2: ToFD Theory
Module 3: Evaluation
Module 4: Review
Each module contains:
Pages explaining the underlying theory
Videos explaining the theoretical and practical aspects of Time of Flight Diffraction,
Silverlight interactive exercises in which the student can build a set-up, practice calibration and scanning and learn to evaluate real data
A test section for self-evaluation
At the end of your online training phase, an online test will enable you to decide whether you are ready for the classroom element of the course, or if you need further time to study.
When you have booked your online training, you will receive an email notification with your login details. You will then have 60 days from first login to complete your eLearning course.
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
• 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.