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Liquid Penetrant Testing
Liquid penetrant testing is one of the oldest and simplists NDT methods where its earliest versions (using kerosene and oil mixture) dates back to…
NDT News
126 technical articles and industry updates
Method guides, certification routes, salary surveys, codes and standards explained, and news from the inspection industry.
955 discussions · 382 answers
Latest forum discussions
Phased ArrayPAUT Focusing problems (Near Field Length Compensation Options)ketkon · 1 reply · 1 day agoAbstractIn a previous report by the authors, the relative accuracy of Beamtool as it relates to calculations…Read discussion
Quality ControlWhat is the role of inspection in quality control?arsal · 1 reply · 1 day agoInspection involves measuring, examining and testing products, process and services against specified…Read discussion
Quality ControlBonding quality assessmentwilliam · 2 replies · 1 day agoDear sir, We are bonding steel and titanium alloys and assessing the bonding quality at the interface of the…Read discussion
Phased ArraySensitivity calibration in Phased Array UltrasonicsVisitor · 1 reply · 1 day agoHi,The manufacturer of the Phased Array equipment that I use indicates to calibrate the Sensitivity through…Read discussion- Hydrostatic TestingHelium Leak Test vs Hydrostatic Testwilliam · 2 replies · 1 day agoDoes anyone have experience or information on correlation of these tests? What will leak at hydro test vs…Read discussion
- Eddy CurrentWhat is the eddy current inspection method?arsal · 1 reply · 1 day agoEddy current testing is a non-destructive testing (NDT) inspection method used for a variety of purposes…Read discussion
RadiographyWhat is RT in piping?sofia · 1 reply · 1 day agoIndustrial Radiographic Testing (RT) makes use of X-ray or gamma radiation to create images that can show…Read discussion
RadiographyRADIOGRAPHY INTERPRETATIONchris · 1 reply · 1 day agoRT Film Interpretation What is Radiographic Testing? A non-destructive method for detecting discontinuities…Read discussion
RadiographyRadiography Film type equivalantleo · 2 replies · 1 day agohello how can I find equivalent of a specific radiography film type in other film brands? is there any…Read discussion
RadiographyRadiography thickness limitation per ASME codegeorge · 2 replies · 1 day agoI would like to know exact statement from ASME code ref. describing about thickness limitation specified..…Read discussion
193 calculations with worked examples
NDT calculators
FreeUTNear field length, circular probeNear-field (Fresnel zone) length N = D²f/4c for a circular single-crystal probe, with the wavelength it…Open calculator- FreeUTAngle beam sound path, surface distance and depthSolves the first-leg angle-beam triangle — sound path, surface distance and depth — from any one of the…Open calculator
- FreeTOFDToFD depth from time of flightConverts a measured ToFD arrival time into the depth of the diffracting tip below the scanning surface.Open calculator
- FreePAUTMaximum PAUT scan speedHighest encoded scan speed that still records every acquisition point, from the frame rate and the scan…Open calculator
- FreeRTSource decayCalculates the present activity of a gamma radiography source from its assay activity and the elapsed…Open calculator
- FreeMTCoil shot current, low fill factorAmpere-turns and coil current for longitudinal magnetisation in a low fill factor coil - part against…Open calculator
- FreePTPenetrant dwell timeMinimum penetrant and developer dwell times from ASME V Table T-672 by material and product form, with…Open calculator
- FreeETStandard depth of penetrationEddy current standard depth of penetration (skin depth) from resistivity, relative permeability and…Open calculator
- FreeOther methodsLeak rate unit converterConverts a leak rate between mbar·L/s, Pa·m³/s, atm·cc/s, Torr·L/s, sccm and scfh so acceptance…Open calculator
- FreeOther methodsNDT unit converter hubOne-stop conversions for the units NDT actually uses: length and thickness, pressure, temperature…Open calculator