The Largest Open Access Portal of Nondestructive Testing (NDT)

631 views Technical Discussions gulay litchfield gulay litchfield 06:32 Jul-22-2003 Crack detection Dear All We are producing punches and dies for the tabletting machines (presses) in the pharmaceutical industry. Currently, we have been sourcing a crack detection equipment (for very fine cracks) for surface and sub-surface cracks.Eventhough we have liquid penetrant and optical measurement equipment in place, these methods are time consuming eventhough very effective. The ideal method should detect the cracks within less than a minute. Our products are made of steel and average material thickness is 16 mm. If you suggest any method or equipment which allows us perform the test in less than a minute and also precise, this would be highly appreciated. Meanwhile, we tried Eddy current method and this did not give the expectant results, was not effective. For more information about our products, you can visit our web site. www.iholland.co.uk Could Magnetic Particle-Fluorescent, Ultrasonic test or Magnetic Barkhausen Noise method be the answer? Thank you in advance                  Reply  Translate  Close   John O'Brien Consultant, - Chevron ETC , USA, Joined Jan 2000, 278 John O'Brien Consultant, - Chevron ETC , USA, Joined Jan 2000 278 09:56 Jul-24-2003 Re: Crack detection You might consider resistivity measurement. 4 point pin resisitivity measures very fine chganges in measurement resistance over a set pin spacing. Changes in resisitivity due to prescence of a crack are possible. Once set up properly it is less than a minute per spot. If you wish to pursue please contact me.                  Reply  Translate  Close   Jamie Gauthier Jamie Gauthier 06:07 Jul-24-2003 Re: Crack detection You might consider ACFM (Alternating Current Field Measurement). Very accurate and fast for measuring surface breaking cracks. Can work in high temperatures as well and gives a recordable image.                  Reply  Translate  Close   abdallah hassan abdallah hassan 05:35 Aug-04-2003 Re: Crack detection : You might consider resistivity measurement. 4 point pin resisitivity measures very fine chganges in measurement resistance over a set pin spacing. Changes in resisitivity due to prescence of a crack are possible. Once set up properly it is less than a minute per spot. If you wish to pursue please contact me. .plz reply quickly either refuse or accept                  Reply  Translate  Close   Product Spotlight Ultrasonic Testing Immersion Tanks with Unmatched Scanning Features StandTecScan Systems TecScan’s non-destructive testing Ultrasonic Immersion Tanks & scanners are designed for high pe ... rformance and demanding NDT testing applications. Our Scan3D™ line of High Precision Immersion Tanks are specifically designed for automated ultrasonic testing of complex composites parts used in aerospace and industrial applications. > 5 Showcases4 Videos NovaScope 6000 StandNDT Systems, Inc. The all-digital Novascope 6000 is a portable, ultra-high precision thickness gauge for high-speed ... thickness measurement. Novascope 6000 has unmatched capabilities and unique features including: •Superior Resolution with high contrast, high-speed color RF display •High pulser voltage •Real-time video output •Increased internal/external data storage •Programmable SetUp features •Battery & AC Powered > 5 Showcases SONOAIR - air-coupled Phased Array Ultrasonic Inspection System StandSONOTEC Ultraschallsensorik Halle GmbH For highly attenuating materials, the performance of the system is critical. The ultrasonic sensors, ... the scanning area and the system settings should be flexibly adapted to the test task and the material. These high expectations are met with the new and modular testing system SONOAIR. With the world’s first air-coupled phased-array UT inspection system SONOAIR we developed a technology that works with up to 4 transmitter and receiver channels with freely configurable square wave burst transmitters as wells as low noise receiving amplifiers. > 5 Showcases5 Videos High-performance Linear Phased Array Probes StandPhoenix Inspection Systems Limited Available to order from stock in a range of 5MHz – 7.5MHz and from 16 to 64 elements. Designed w ... ith piezo-composite elements, Phoenix phased array probes provide high-resolution imaging to maximise sensitivity; accurate ultrasonic detection and sizing of defects in welds; and effective corrosion mapping. Housed in a rugged stainless steel case for on-site industrial NDT applications. > 5 Showcases5 Videos more Showcases Share... Home Exhibition Archive Forum Jobs Members Events Directory NDT A-Z Advertise Privacy Policy Contact About © NDT.net - Where expertise comes together. The Largest Open Access Portal of Nondestructive Testing (NDT)- since 1996 We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info Accept top this is debug window