Ultrasonic Testing (UT) Handbook
Introduction Basic Principles of Ultrasonic Testing Ultrasonic Testing (UT) uses high frequency sound energy to conduct examinations and make…
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126 technical articles and industry updates
Method guides, certification routes, salary surveys, codes and standards explained, and news from the inspection industry.
963 discussions · 392 answers
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NDTTransferring from Underwater Commercial Dive Inspections to Topside?Deon De Crabtree II · 0 replies · 1 day agoTransferring from Underwater Commercial Dive Inspections to TopsideRead discussion
NDTWe are looking to connect with qualified NDT professionals holding PCN or CSWIP Level II certifications in UT, PAUT,?ALNabaa ALYaqeen Co. · 0 replies · 2 days agoWe are looking to connect with qualified NDT professionals holding PCN or CSWIP Level II certifications in…Read discussion
Quality ControlWhat Do You Usually Do When Parts Don't Pass Quality Control?Thomas Johnson · 0 replies · 10 days agoFrom time to time, we come across parts during manufacturing that don't quite meet the required…Read discussion
Chemical SectorSeeking Advice on Cooling Water Treatment ProgramsHooChemtec · 1 reply · 11 days agoHi everyone, I'm looking for practical advice on industrial cooling water treatment. We run an open…Read discussion
Automated Pipeline InspectionAutomated UT inspection of steel mill work rolls :jaden · 2 replies · 11 days agoWe currently use eddy current flaw detection techniques in our roll grinding shop. I am interested in…Read discussion
Codes and StandardsWPS T joint CJP according AWS D1.1rafa · 1 reply · 11 days agoHi,I have question regarding the WPS document. I have T joint which consists of 16 mm main chord with 60 mm…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