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619 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 NDT.net launches mobile-friendly design StandNDT.net NDT.net has revamped its website providing a mobile-friendly design.The front page received a comp ... letely new design and all other sections are now reacting responsively on mobile devices. This has been a major step to make our website more user- friendly. > 2 Showcases3 Videos NEOS III StandLogos Imaging NEOS III is Logos Imagings lightest DR system. With a built-in battery and internal wireless commu ... nication, the NEOS III is perfect for users that want to quickly assess an item. > 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 NDTkit RT StandTESTIA NDTkit RT, TESTIA's Digital Radiography software The NDTkit product line software for X-ray analysi ... s. NDTkit RT is a software benefiting from the Ultis kernel which is dedicated to radiographic image analysis. It offers a set of tools and filtering processes to assist RT operators in finding relevant flaws. > 5 Showcases2 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