roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Ultrasonic thickness guage
Hong Kong, digital for copper, steel, aluminum/etc. Range of 1.5mm-225mm. Anyone use one of these ? I have (2) professionally tested iron blocks, to compare with. Onward, roverman.
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roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: Ultrasonic thickness guage
FPE, 215 is thinner,(3.5"/3.5" bore), being semi permanent mold, but higher tensile. 215's never moved a sleeve, as they are ribbed and integral cast. How these things hold together at 700+ psi, is anybodies-guess. Nanoseconds ? roverman.
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BlownMGB-V8 Jim Blackwood 9406 Gunpowder Rd., Florence, KY 41042 (6468 posts) Registered: 10/23/2007 12:59PM Main British Car: 1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS |
Re: Ultrasonic thickness guage
I'm guessing that's not something new from HF.
Jim |
DiDueColpi Fred Key West coast - Canada (1365 posts) Registered: 05/14/2010 03:06AM Main British Car: I really thought that I'd be an action figure by now! |
Re: Ultrasonic thickness guage
Might have a bit of a time with it considering the two dissimilar metals and the probability of an air gap and or corrosion.
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WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: Ultrasonic thickness guage
I use them almost daily but what you need is one that has a "A Scan" because it will show the liner to block boundary if there is no air gap. If you have an air gap you will only see the thickness of the liner repeating its self. I do Babbitt bearings all the time for bond to the steel shell. Its easy but you have to have the right set up. The transducer is the most important part. Its a size and frequency combination.
This is a good bond where the sound hits the bonding area and passes thru into the steel giving a single signal of the two material interface This is a bad bond where the sound hit the bond break and then repeats in the Babbitt material never going into the steel shell. |
DiDueColpi Fred Key West coast - Canada (1365 posts) Registered: 05/14/2010 03:06AM Main British Car: I really thought that I'd be an action figure by now! |
Re: Ultrasonic thickness guage
That's what I was getting at Mike.
The cheaper units won't have the resolution required to read accurately. And the skill of the operator is a big factor. I've used them for years and it's not the "point and shoot" deal that most people believe. In the hands of someone like yourself, who knows how to use the tool. They are irreplaceable. But for a beginner there is a steep learning curve. Cheers Fred |
kstevusa kelly stevenson Southern Middle Tennessee (985 posts) Registered: 10/25/2007 09:37AM Main British Car: 2003 Jaguar XK8 Coupe 4.2L DOHC/ VVT / 6sp. AT |
Re: Ultrasonic thickness guage
Fred, do you mean it is not like a "Peter Meter"? just lay it on and read the scale. Tiny, Small, Barely, Almost, average, too much . Note:The size lettering decreases from TINY to t.much. Can't really ready w/o glasses. Guess maybe wishful thinking > :-)
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