http://www.k-wave.org/forum/topic/elastic-wave-simulation-for-flaw-detection Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 12:08:21 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/elastic-wave-simulation-for-flaw-detection#post-5632 Wed, 10 Aug 2016 17:26:38 +0000 Bradley Treeby 5632@http://www.k-wave.org/forum/ <p>Hi guanx,</p> <p>There is currently no way to explicitly specify a boundary condition (e.g., a perfectly reflecting interface) within the medium (although you might like to see <a href="http://www.k-wave.org/forum/topic/room-enclouse-acoustic-simulation">this post</a>). The alternative is to define a region with an impedance mismatch, for example using an increased value of sound speed and density. </p> <p>One point to note, if you do increase the sound speed, I'd recommend setting the value of <code>medium.sound_speed_ref</code> to the sound speed in the elastic block, as this will minimise the numerical dispersion (see also Section 2.7 in the manual).</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/elastic-wave-simulation-for-flaw-detection#post-5619 Mon, 01 Aug 2016 17:35:01 +0000 guanx 5619@http://www.k-wave.org/forum/ <p>Hi Brad and Ben,</p> <p>Thanks for offering such a great and useful toolbox for wave simulation. I am new to K-wave toolbox, and the elastic wave simulation is of primary interest to me. I ran the latest example codes without any issue.</p> <p>I have a question and hope you can advise: does the current k-wave elastic module support inserting a perfect reflector in the medium (e.g., by specifying the grid locations) to represent a material flaw (e.g., a crack) and incorporate this in the simulation? In short, I would like to insert flaws in an elastic material block and simulate the pitch-echo transducer data in industrial NDE scenarios. Again thanks for your time.</p> <p>Best regards,<br /> -guanx </p>