The Largest Open Access Portal of Nondestructive Testing (NDT)

658 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, 280 John O'Brien Consultant, - Chevron ETC , USA, Joined Jan 2000 280 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 IRIS 9000Plus - Introducing the next generation of heat exchanger inspection. StandIris Inspection Services, Inc. Representing the seventh generation of the IRIS system, the IRIS 9000 Plus has nearly 200 years of c ... ombined field inspection experience incorporated in its design. This experience combined with a strong commitment to quality and a history of innovation has made Iris Inspection Services® the undisputed leader in IRIS technology. > FD800 Bench Top Flaw Detectors StandElcometer NDT The bench-top FD800 flaw detector range combines state-of-the-art flaw detection with advanced mater ... ial thickness capabilities. Designed for use in the laboratory these gauges are the tool you need for all your flaw detecting needs. > 3 Showcases3 Videos Research Center IDEKO develops an ultrasonic train wheel inspection system for CAF StandIDEKO S.Coop The Basque Research centre IK4-IDEKO has developed a state-of-the-art ultrasonic inspection system f ... or the train wheel. This system secures a sound condition of train wheels and is thus a significant contribution to rail transport safety. The device was delivered to CAF recently and its use allows the manufacturer to become an approved supplier of rolling stock in Italy, as it meets the demanding homologation standards of this country. \\\\r\\\\n > 3 Showcases XRHRobotStar StandVisiConsult Systems & Solutions GmbH In high volume industries like automotive the requirement for a hundred percent X-ray inspection c ... reates a bottleneck in the production. The XRHRobotStar is a fully Automated Defect Recognition (ADR) capable robot-system that allows an ultra-fast in-line inspection. > 5 Showcases5 Videos more Showcases

Share...

• Home
• Exhibition
• Archive
• Forum
• Jobs
• Members
• Events
• Directory
• NDT A-Z

• Advertise
• Privacy Policy
• Contact & Imprint
• About

© NDT.net - Where expertise comes together. The Largest Open Access Portal of Nondestructive Testing (NDT)- since 1996