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Hillger Ing. Büro was founded in 1984 and develops special ultrasonic imaging systems for high-tech materials.

456 views Technical Discussions Hafiz Hafiz 14:31 Aug-22-2009 spatial resolution Dear Experts, I have some queries regarding the ultrasonic resolution. i did some study on ultrasonic transducer. i placed a transmitter & at the other end a receiver probe on the verticle column surface (non-invasive, with couplant) consist of water. my reason is to study/measure the air bubbles velocity released from the bottom of the column. if my freq is 40kHz, and taking v= 1500m/s (water), from v = f*lamda, the wavelength of the sound is 37.5mm. so, what is the minimum bubble size could be detected by the receiver probe? is it equivalent to the wavelength? because i did try smaller than the wavelength (25mm) and the receiver probe still gives the response. thank you                  Reply  Translate  Close   Wieslaw Bicz Engineering, PBP Optel sp. z o.o., Poland, Joined Feb 2009, 240 Wieslaw Bicz Engineering, PBP Optel sp. z o.o., Poland, Joined Feb 2009 240 19:12 Sep-15-2009 Re: spatial resolution In Reply to Hafiz at 14:31 Aug-22-2009 (Opening). The detection of single bubbles has nothing to do with resolution. This would be the case, if you would be interested in differentiation between two bubbles situated close to each other. In you case the question will be: how strong is the signal reflected by the bubble and what is the sensitivity of your probe and electronics. The wave length is not significant in this case. It can be much larger than the bubble size.                  Reply  Translate  Close   Product Spotlight Ceram 35P (Panoramic) StandBALTEAU NDT The Ceram 35P is the panoramic brand new portable generators designed by Balteau NDT and is offering ... no less than 300kV, 5mA and 100% duty cycle for an incredible image contrast even at full power. It will will surely become a reference as it can be classified as a high power portable unit and can be operated with our CF2000 control unit but also with our well known Hand-X Wireless Remote Control. > 5 Showcases3 Videos FMC/TFM StandAdvanced OEM Solutions Next generation for Phased Array UT is here now with FMC/TFM! Have higher resolution imaging, impr ... oved signal to noise ratio, characterize, size and analyze defects better with access to several wave mode views and save raw FMC data for higher quality analysis.  Some of the benefits are: Beautiful Image! Easier to understand what you're looking at Completely focused in entire image or volume Much easier to define setups before inspection Easier to decipher geometry echoes from real defects Oriented defects (e.g. cracks) are imaged better See image from different wave modes from one FMC inspection FMC data can be reprocessed/analyzed without going back to the field > 3 Showcases IK4-IDEKO develops an ultrasonic train wheel inspection system for CAF StandIDEKO S.Coop The Basque technology centre IK4-IDEKO has developed a state-of-the-art ultrasonic inspection system ... for 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 > 2 Showcases 35 years of VOGT Ultrasonics! StandVOGT Ultrasonics GmbH This year we are celebrating a company anniversary! 35 years have passed since we first took our t ... est device and swung the probe on behalf of safety. But our ultrasonic know-how goes back many years.. > 3 Showcases more Showcases Share... Home Exhibition Archive Forum Jobs MyNDT Network 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 s