Non-Destructive Testing Level II Full Course | NDT Course

Learn the basics of visual testing, including direct and remote visual inspection, advantages, limitations, and key terminology for detecting surface defects.

Learn the visual testing procedure (VT) for non-destructive evaluation, covering scope, test parameters, calibration, dimensional inspection, surface examination, and reporting of findings.

Learn how to perform visual inspection of welds, recognize defects and discontinuities, use proper inspection equipment, and apply a three-stage inspection before, during, and after welding to ensure weld quality.

Explore common visual testing interview questions, define visual inspection and its limitations, and examine remote visual inspection with drones, plus key concepts like defect versus discontinuity.

Learn ultrasonic testing principles, including high-frequency waves, pulse-echo and transmission modes, to detect flaws and measure thickness. Explore wave types and applications across aerospace, automotive, construction, and medical contexts.

Explore acoustic impedance and its role in reflection, refraction, and mode conversion of ultrasonic waves at material interfaces. Use Snell's law and angle beams to control energy and generate waves.

Explain how couplants—liquids or pastes such as glycerin and water—facilitate ultrasonic energy transfer by eliminating air gaps, and contrast contact and immersion ultrasonic testing with coupling considerations.

Explore transducers and their characteristics, including piezoelectric and polarized ceramic types, and how direct and inverse piezoelectric effects enable ultrasonic energy conversion, near-field and far-field beam profiles.

Explore classifications of ultrasonic testing probes, including normal, delay-line, dual-element, angle, and emergent probes. Learn how coupling, frequency, and probe geometry influence probe selection for casting, forging, and emergent testing.

Understand ultrasonic flaw detectors and their A-scan, B-scan, and C-scan modes, plus thickness gauge applications for locating cracks, voids, and corrosion in materials.

Explore six ultrasonic test techniques: pulsed echo, transmission method, resonance, immersion technique, emergent technique, and normal and angled beam testing to detect defects and measure features in metals.

Master calibration concepts for ultrasonic testing, including calibration and reference blocks, selection of test blocks, and key block types such as IAW blocks, amplitude blocks, and distance amplitude blocks.

Learn how ultrasonic testing uses high-frequency sound waves to detect imperfections and measure thickness in metals, plastics, composites, and ceramics, with emphasis on transducers, calibration, and flaw detectors.

Explore magnetic particle testing, a fast non-destructive method for detecting surface and near-surface flaws in ferromagnetic metals using flux leakage and dye-coated iron particles.

learn to choose and use magnetic particle testing equipment, including mobile, stationary, and portable units, for ac or dc magnetization, wet or dry methods, and relevant accessories.

Master the magnetic particle testing procedure (MPT): surface cleaning, magnetization, particle application, and interpretation, with demagnetization; cover equipment calibration, light sources, and temperature limits.

Master pre cleaning for magnetic particle inspection by removing oil, grease, scale, and debris and ensuring surfaces are clean and dry, with lighting rules for visible and fluorescent MPI.

Introduce the magnetic field for nondestructive testing, covering direct and indirect magnetization, key techniques (hacksaw technique, clamps, headshot), and current types DC, AC, and WAC.

Explore dry and wet magnetic particle inspection, applying magnetic media to reveal cracks with high-contrast dry powders and mobile liquid suspensions, using iron oxide, colors, and fluorescent particles.

Interpret indications in magnetic particle inspection, distinguishing relevant from non-relevant findings for welds and other parts, using dry and wet particles, probes, and large-area inspection.

Demagnetization reverses residual magnetic fields after the magnetic particle method, preventing interference with welding, machining, and sensitive instruments, while detailing demagnetization methods and reporting standards.

Explore magnetic particle testing to detect surface and near-surface flaws in ferromagnetic metals by magnetizing parts and visualizing flux leakage with iodine particles.

Learn the basics of liquid penetrant testing (LPT) for not ferromagnetic materials, including capillary action, surface flaw detection with visible and fluorescent penetrants, the six-step process, and advantages and limitations.

Explore the liquid penetrant testing cleaning procedure, including pre cleaning, drying, steps (penetrant application, excess removal, developer application, inspection, post cleaning) and techniques like detergent, solvent, ultrasonic, and steam cleaning.

Apply penetrant materials after cleaning to reveal surface discontinuities, exploring penetrant types (fluorescent and visible), properties, selection criteria, and application techniques (dipping, spraying, brushing) with dwell time considerations.

Master excess penetrant removal and developer application using water washable, lipophilic, solvent removable, and emulsifier methods to reveal defects with proper dwell time.

Learn how to select penetrant techniques for LPT based on sensitivity, surface condition, and part configuration. Understand the categorization of penetrant systems and LPT techniques for large-volume and high-sensitivity inspections.

Learn how to perform inspection and evaluation in liquid penetrant testing (LPD), classify discontinuities, evaluate indications, and apply acceptance criteria using visible and fluorescent penetrants.

Explains liquid penetrant testing interview topics, covering developer choice, dye versus fluorescent indications, penetrant properties, sensitivity effects, and the role of emulsifiers.

Explore radiographic testing (RT) as a non-destructive method using x rays or gamma rays to detect flaws and thickness changes, with conventional and digital radiography applications in pipelines, aerospace.

Explore the properties, production, and equipment of x rays and gamma rays, compare their penetration and radiographic testing applications in non-destructive testing.

Learn radiographic testing procedure and film processing, including surface preparation, exposure, screen/film selection, and defect inspection. Master film handling and processing steps, and codes and standards guiding radiographic inspection.

Master radiographic testing concepts through common interview questions, covering conventional and digital radiography, x-ray generation, gamma radiation, half-life, exposure techniques, and remedies for backscatter and undercut.

Explore eddy current testing, an electromagnetic induction method that detects surface cracks and material properties by monitoring impedance changes and depth of penetration in conductive metals.

Learn to apply eddy current inspection for crack detection, tube inspection, and thickness measurement, selecting probes and frequencies, and following standardization and inspection procedures.

Explore eddy current probes for non-destructive testing, including configuration versus mode of operation, surface, bolt hole, inside diameter, and outside diameter probes, and eddy current array benefits and limitations.

Master key concepts in eddy current testing through interview questions on thickness measurement, tube inspection with bobbin probe, power and permeability effects, standard depth of penetration, and common limitations.

Explore acoustic emission testing as a non-destructive method that detects energy released during deformation, using sensors to locate cracks and monitor pipelines and pressure vessels.

Explore qualitative and quantitative acoustic emission types, background noise control, and source location techniques (linear, point, zonal) plus transient and continuous testing methods for structural evaluation.

Explore the components of acoustic emission testing, including sensors, couplants, preamplifiers, filters, data acquisition devices, and test graphs, and learn how they work together under codes and standards.

Explore acoustic emission testing fundamentals, thresholding, and online inspection benefits, including burst and continuous emissions, amplitude, zonal and linear location techniques, and key sources of acoustic emissions.

Explore bubble leak testing, covering liquid immersion and foam application, acrylic vacuum chambers, and ASTM standards, with guidance on procedure, cleaning, and effective leak detection.

Explore pressure decay and mass spectrometer leak testing, including the helium method and differential pressure decay. Gain practical insight into procedures, leak rate concepts, automation, and relevant codes and standards.