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  1. cjohnso0

    TTT Diagram for Waspaloy

    Thank you metengr. Unfortunately the diagram that I find on page 175 is not a TTT diagram. It shows phase concentration vs. temp for the various carbides formed. This is from the 1991 version on the 'net.
  2. cjohnso0

    TTT Diagram for Waspaloy

    Hello all, I am currently searching for a T-T-T diagram for the nickel-based alloy Waspaloy. Does anyone out there have any leads on where I can look or who I can contact? Google searches have resulted in nothing so far. Thanks!
  3. cjohnso0

    Certificate of Conformance vs. 8130?

    Kirby, Not sure if you've solved your certification issues yet, but I've got a few comments from my 13 years in FAA repair stations. Your QC team should discuss this with your PMI. Every repair station and PMI is a bit different in how they handle this, as the Regulations are vague. Here's...
  4. cjohnso0

    15-5 PH Condition 1025 Heat Treat Per AMS 2759/3

    Hi jallenc, We make all of our parts for aerospace, so I've got some experience with this. Your customer will not accept the parts because they were not certified to heat treatment per AMS2759/3. The parts are not meeting their requirements. Do you have AMS2759? There are many very specific...
  5. cjohnso0

    Repairs beyond SRM

    I come from Turbine Engine Repair as a Repair Development Engineer. I work in aftermarked, not OEM, so we deal with this all day every day. 14 CFR 43.13 actually spells out the requirements for maintenance etc... "Sec. 43.13 Performance rules (general). (a) Each person performing...
  6. cjohnso0

    Obscure Perpendicularity Callout Help

    Thanks for the replies. There are no references whatsoever. This is directly from the CFMI engine manual repair. I can find nothing in the remainder of the manual, or in any related manuals, like the Standard Practices Manual. This is taken from a repair manual for this engine. I do not...
  7. cjohnso0

    Obscure Perpendicularity Callout Help

    Hi all, I am trying to decipher a GD&T perpendicularity requirement we have run into. This is a requirement while repairing a commercial CFM56-7B turbine engine accessory gearbox. The bores in question are bearing bores which locate the gears in the gearbox. Each of the bores has a...
  8. cjohnso0

    Blend Fillet Inventor 2012

    You can try a very small fillet on the vertical edge first, something like <.0001". Then fillet the base. I'm not sure how it will affect your mesh though.
  9. cjohnso0

    Autodesk Simulation 360 - Anyone tried it?

    Greetings fellow engineers, Like many here I'm sure, our small company never seems to want to invest in decent software. As such, we've got no simulation capabilities, we use Inventor 2012, but don't have the simulation package. I'm wondering if anyone here has tried out the Autodesk...
  10. cjohnso0

    Fluorescent Penetrant Inspection Assistance Needed

    SparWeb, Apparently we cannot apply the emulsifier, the penetrant is not an issue. According to the tech data from the OEM, we need to immerse or apply via foam spray the emulsifier. Do to the part configuration we cannot immerse it, as it is too large for our facilities. Another reason...
  11. cjohnso0

    Fluorescent Penetrant Inspection Assistance Needed

    Thanks for the replies, We are an engine repair facility, working to an OEM standard practice specification. This spec is based on SAE-AMS-2644 and references the penetrant / classifications listed in the AMS spec. The issue is that the OEM repair manual is requesting us to FPI certain areas...
  12. cjohnso0

    Fluorescent Penetrant Inspection Assistance Needed

    Greetings everyone, I am looking for help with an FPI-related discussion I am having with our local Level III. I have the requirement to FPI a certain part using a 1D2 class penetrant (Medium Sensitivity, Post Emulsified). Unfortunately, we are unable to process this component with this...
  13. cjohnso0

    Spherical Bushing Inspection Method

    rustbuster, That gage doesn't look to be accurate enough, as I'd have to measure the distance across the points after removal. ajack1, I'm inspecting the bore (well, I think I am anyways) for serviceability to check for wear, etc... We do have a few CMM's, the only problem being that the...
  14. cjohnso0

    Spherical Bushing Inspection Method

    Greetings folks! I'm looking for some assistance in inspection of a spherical bushing inner diameter. Attached is a sketch of the part, and the relevant dimensions. I need only to check the inner spherical diameter on this part, in very limited quantities. I've looked at several gages, none...
  15. cjohnso0

    Composite True Position Interpretation

    dingy2 - This part is not mounting on the mating parts. Unfortunately, we didn't come up with this True Position callout, the part manufacturer somehow put it on their blueprint. We are repairing this part with weld, and need to inspect it after the welding process to ensure it's still...
  16. cjohnso0

    Composite True Position Interpretation

    Thanks for the quick reply SeasonLee. I'm still confused as to how to interpret this. I may have to go back to the OEM who made up the print for this one to try to get clarification. In regards to (1.) above, there actually is a diameter symbol on the drawing, I missed it. According to the...
  17. cjohnso0

    Composite True Position Interpretation

    SeasonLee, Here's a very rough sketch I drew up in Photoshop, as I'm at home right now, I don't have access to my CAD program. It should give you the idea though. I've simplified it a bit for the pic by removing a bunch of the...
  18. cjohnso0

    Composite True Position Interpretation

    I've been scouring the internet all afternoon looking for some insight into a true position callout we are dealing with. I am trying to inspect a threaded hole pattern (20 holes equally spaced around a circle) to the following composite true position: [TP|0.0157|E|C] [ |0.0157] Datum -C- is...
  19. cjohnso0

    Is this a good idea

    During my undergrad school I worked full time with a full course load, it's doable, just very busy. I wouldn't expect much of the fun college life, maybe a night out on the weekends every now and again. I know I spent my days at work, or working on homework. But the good side of it was I only...
  20. cjohnso0

    Switching Industries

    Hi folks, I've been reading through some of these career-based posts and found lots of information to ponder. Now I've got a question of my own I'd like to pose. I am currently working in the aerospace industry (3 years now) for a turbine overhaul and repair company. Originally, my job was...

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