ASME, AWS & API: NDT Codes and Standards Explained (2026)
Ask any hiring manager what separates a good NDT technician from a great inspector and the answer is rarely another method ticket - it is fluency in…
NDT News
126 technical articles and industry updates
Method guides, certification routes, salary surveys, codes and standards explained, and news from the inspection industry.
957 discussions · 384 answers
Latest forum discussions
NDTASME Section VIII, Division 1, or ASME B31.3, and the project specifications?Arun Tiwari · 0 replies · 2 days agoASME Section VIII, Division 1, or ASME B31.3, and the project specifications.Read discussion
NDTWhat acceptable method do you use for UT?Victory Ihunanyachi Chimaobi · 1 reply · 10 days agoWhat acceptable method do you use for UTRead discussion
NDTNDT technician roles and responsibilitiesNDT Inspect (admin) · 1 reply · 18 days agoNDT (non-destructive testing) technicians are responsible for using various methods to inspect and test…Read discussion
Phased ArrayPAUT Focusing problems (Near Field Length Compensation Options)ketkon · 1 reply · 27 days 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 · 27 days agoInspection involves measuring, examining and testing products, process and services against specified…Read discussion
Quality ControlBonding quality assessmentwilliam · 2 replies · 27 days agoDear sir, We are bonding steel and titanium alloys and assessing the bonding quality at the interface of the…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