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Live updates from the NDT Inspect community: new NDT job vacancies, product launches from the virtual exhibition, forum discussions and member activity across ultrasonic, radiographic, phased array and every other inspection method. Join free to post and follow.
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NDT Inspect (admin) replied to the discussion PAUT Focusing problems (Near Field Length Compensation Options)18 days agoThis is a valuable contribution on an important practical problem in PAUT. The observation that near field length shortens with increasing refracted angle, and that DAC curve peaks shift to shorter sound paths on higher-angle wedges, reflects real physics that practitioners need to account for in…
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NDT Inspect (admin) replied to the discussion What is the role of inspection in quality control?18 days ago
Inspection is indeed a critical tool in quality control, and your description captures its core purpose well. Let me add some practical context for how it fits into QC workflows. In QC, inspection serves several key roles: - Verification of conformity: checking that products, materials and…
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NDT Inspect (admin) replied to the discussion Bonding quality assessment18 days ago
For adhesive bonding of dissimilar metals like steel and titanium in aerospace applications, the specific inspection methods required depend on your written procedure and the applicable aerospace standard or specification. UT (ultrasonic testing) can detect voids and delaminations at the bond line…
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NDT Inspect (admin) replied to the discussion Sensitivity calibration in Phased Array Ultrasonics18 days ago
Your approach is sound practice. What you are doing — calibrating sensitivity using a test block that mimics the actual inspection geometry — is in line with the principle that sensitivity calibration should be representative of the component being inspected. The 1.5 mm side hole in the V1 block…
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NDT Inspect (admin) replied to the discussion Helium Leak Test vs Hydrostatic Test18 days ago
Helium leak testing and hydrostatic testing serve different purposes and detect different types of defects, so they are not directly comparable as pass/fail tests. Hydrostatic testing is a strength test. It applies pressure to the vessel or component to verify structural integrity and find gross…
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NDT Inspect (admin) replied to the discussion What is the eddy current inspection method?18 days ago
Eddy current testing (ECT) is one of the most versatile NDT methods, and your summary covers its main applications well. Here are some additional points that might help members working with it: ECT works by inducing alternating electrical currents into a conductive material using a probe coil.…
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NDT Inspect (admin) replied to the discussion What is RT in piping?18 days ago
RT in piping is radiographic testing of pipe welds, joints and the pipe body itself to detect internal defects. The X-ray or gamma source creates an image on film or a digital detector on the other side of the pipe wall, and the inspector examines it for discontinuities such as porosity, lack of…
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NDT Inspect (admin) replied to the discussion RADIOGRAPHY INTERPRETATION18 days ago
Thanks for sharing this introduction to radiographic testing. A few points worth highlighting for members working with RT: Key differences between X-ray and gamma radiation: X-ray sources are electrical devices that you switch on and off, which gives you control over exposure time and intensity.…
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NDT Inspect (admin) replied to the discussion Radiography Film type equivalant18 days ago
Film equivalency in radiography is governed by film system classification rather than direct brand-to-brand matching. Caleb is right that you cannot simply swap film types between manufacturers without understanding the classification system. ISO 11699-1 defines film system classes (D1, D2, D3…
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NDT Inspect (admin) replied to the discussion Radiography thickness limitation per ASME code18 days ago
Charlie's reference to ASME Section V Article 22 is the right place to look. That article covers radiographic examination, and the tables there show which radiation sources (X-ray or gamma) can be used for different material thicknesses. The key principle is that radiographic sensitivity depends…
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NDT Inspect (admin) replied to the discussion FILM RADIOGRAPHY Optical Density Vs CR Radiography18 days ago
The key difference is that film density and CR grey value measure exposure in fundamentally different ways, so a simple conversion chart won't work across all systems. Film radiography uses optical density (OD), a logarithmic scale where density increases predictably with exposure following the…
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NDT Inspect (admin) posted an update18 days ago
Big update: NDT Inspect just launched two new tools. An equipment marketplace — buy, sell or hire NDT gear straight from other members, no middleman, already dozens of listings live. And a full library of 193 NDT calculators (UT, PAUT, TOFD, RT, MT, PT, ET and more), each one showing the formula, a worked example and the standard it comes from — check your numbers before the job.
The site got a refresh too: a clearer homepage, an easier jobs board, and tidier NDT Virtual Exhibition Stands — walk the floor of the 3D exhibition hall if you haven't yet. Read the full writeup, and tell us what you think in the comments. -
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