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Recent content by mechowl

  1. mechowl

    Help with Setting Up Solver

    Thank you to all for your commentary and input. If either of you are interested in seeing the paper that describes this procedure please email me at mechowl1980@gmail.com Maybe it will be helpful to understand this equation. I have two identical papers printed by two separate publishers and the...
  2. mechowl

    Help with Setting Up Solver

    Thanks Greg! I must admit my knowledge in this area has not been used for many many years, and to add I'm very new to MathCAD. I am playing with the FOR and WHILE loops right, and despite the examples online I'm a bit lost. Can you elaborate how to set this up? This is from a paper that...
  3. mechowl

    Help with Setting Up Solver

    If Y is known, how can this be setup to solve for l? Thank you.
  4. mechowl

    Shaft Design - Ductility/Toughness

    I will change the angle of my inquiry: 1. We often talk about minimum strength requirements, however how would I know what is considered too high of an ultimate strength that I may be concerned of brittle fracture? (I have seen a shaft previously rejected due to "overshooting" the ultimate...
  5. mechowl

    NDT Acceptance Criteria for Bars and Forgings

    metengr I looked in my library and it appears I don't have a copy of D14.6. By the sounds of it I should consider purchasing a copy of it and will consider that tomorrow. redpicker Is there any relevance to my past post about bs en 10308 and 10228 Class III acceptance? THanks
  6. mechowl

    Shaft Design - Ductility/Toughness

    Thanks desertfox, One of my questions was how does one define the amount of ductility or toughness by calculations. Is there a method that I can reference in a textbook? I have yet to find anything like that.
  7. mechowl

    Shaft Design - Ductility/Toughness

    This may be a silly question, however in the consulting industry I see it over and over again so I thought I would reach out to the mechanical engineering world for advice/suggestions. In the design of rotating shafts, parameters such as external loads, service life, geometrical features, etc...
  8. mechowl

    NDT Acceptance Criteria for Bars and Forgings

    Unfortunately I am not aware of any acceptance standards based on service duties for shafting. I will try to obtain a copy of AWS D14.6 to see what is listed, but I find it very hard to believe there are no articles or similar acceptance criteria on machine shafting. I wouldn't even know where...
  9. mechowl

    NDT Acceptance Criteria for Bars and Forgings

    Good Afternoon, I'm looking for standards that can be referenced to define NDT acceptance criteria for the following: Rotating Shaft (Critical Component) Material 4140 Test Specified - Ultrasonic Test and Liquid Penetrant Test ASTM A788 (Standard Specification for Steel Forgings, General...
  10. mechowl

    Specific question about load sensing pumps

    Thanks Ted. That link has helped. Still confused on the metering part. I noticed in the link it was saying that the pressure drop across the valve stays the same (whether you meter 1% of max flow or 99%). My guess is that when you adjust how much you meter the pump automatically sensing the...
  11. mechowl

    Specific question about load sensing pumps

    I have searched the forums and been unable to find answers to my questions. I need help understanding how load sensing pumps work. Please correct any statements that are not true, as well as fill in the details that I am not grasping. I understand that the load sensing compensation's goal is...
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