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Acoustic Absorbtion analyze with impedance tube

    • Tayyib Can Bahadır
      Subscriber

      Hi everyone, i want to analyze a porous material  in an impedance tube and get its sound absorption coefficient. I would be very happy if there is a content or video that I can learn from.

    • Tayyib Can Bahadır
      Subscriber
      Hello i made an analyze for porous material to get absorbtion coifficent. I used Delany-Bazley model. 
      I want to produce this material with 3d printer. My main material is PLA.
      There is a forum about my study, I used that parameters to get absorbtion coifficent.
      My problem is when i select port parameter i have a two option. First one is impedance tube when i choosed tube it worked and gave me a result. But the result is so unreal. 
      After that i selected port parameter to porous material i take an warning. 
      It says: The input power at the driven port is equal to zero. Please check the port definitions.
      How can i solve this problem? 
      And these are the results. Please help me 
       
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