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Recent content by jokerbenj

  1. jokerbenj

    Aeronautic materials equivalence

    Dear all, Thanks for your feedback. The goal of this question is to find other suppliers of metals whatever the shape is (sheet, plate, tube, bar, extrusion, etc). My company being in Europe, it is much more convenient to buy French/German/English standards. I have now two solutions: either...
  2. jokerbenj

    Aeronautic materials equivalence

    Dear forum members, I am looking for a good reference (book, website or else) to define the alternate materials to the ones classically used in aviation and using US norms: - aluminum 2024 - aluminum 7075 - aluminum 6061 - stainless steel 301-304 - steel 4130-4140 - ... I have found two...
  3. jokerbenj

    MS Word: How to handle revisions correctly

    Thank you for your advices. But what are the ISO requirements? Does one of you have templates or examples of the best practices?
  4. jokerbenj

    MS Word: How to handle revisions correctly

    Dear forum members, I ma facing an issue related to the quality of the traceability inside a document. All the engineering reports of my company are written in Word. But, the quality requirements asks to be able to trace the details of the revision of the documents in an accurate way: - The...
  5. jokerbenj

    Hot wet consequences on aircraft interior sandwich panels

    Hello SWComposites, The manufacturer does not have any value for that. I will use the DO-160F (equipments) conditions, because this is an interior component. The authority (EASA/ENAC) need some proof. From the MIL-HDBK-17-2F chapter 6 , I can find some comparison values (ratio around 1.7) but...
  6. jokerbenj

    Hot wet consequences on aircraft interior sandwich panels

    Dear forum members, I need your help regarding the effect of hot wet conditions on sandwich panels. This is an investigation reguested by the aviation authority. They would like to know how much the strength is affected if an interior component (installed in a medical rotorcraft) is in bad...
  7. jokerbenj

    Equivalent metal standards

    Hello, I am facing an issue with the standards for metal (aluminum, steel). A production organization wants to use german standards (WL 3.1354, DIN LN 3.1354) instead of the international standards 2024/7075/6061... I know that there is some equivalency between the national standards (WL, DIN...
  8. jokerbenj

    Allowable basis for sandwich panels

    I already have the A and B basis allowable for the panels. I do not have an agreement with the agency yet. I was more looking for a reference I could use for that (like MIL-HDBK-17). But thanks for your answer.
  9. jokerbenj

    Allowable basis for sandwich panels

    Dear engineers, I trying to define guidelines for a stress engineer in aeronautic. We are making composite monuments for aircrafts/rotorcrafts. They are made with honeycomb panels (from Euro-Composite EC-PA-235G). For the margin of safety calculation, what would you recommend to use: A-basis...
  10. jokerbenj

    Excel VBA code to generate loadcases

    Hey! I also have the same issue. My code is almost the same. If you remove the line fs.LoadDefinitionID = ID, you will se the loads in the section "Other Loads/on mesh". But I do not manage to put the nodal force into the load definition. Can someone help us? Thanks!! Ben
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