Abstract
Starting with an exact point source impulse solution for diffraction and reflection from an infinite wedge, the acoustic field is calculated for plane waves scattered by a periodic assemblage of pressure release or rigid wedges. The calculated angles and fractional strengths of the diffracted orders compare very well with predictions of exact theories for scattering from diffraction gratings. Under otherwise identical conditions, the change in the wedge impedance to describe rigid or pressure release boundary conditions can cause dramatic changes in the energy distribution. This work validates the use of the wedge assemblage technique of numerical calculation for cases in which the wedge separations are as little as one-half wavelength. It is shown that in this realm only diffractions are important, and that facet reflections do not contribute to the scattered energy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
