Patents by Inventor Tuncay Akal

Tuncay Akal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Probe for evaluating seafloor geoacoustic and geotechnical properties
    Patent number: 5681982
    Abstract: An apparatus and method is disclosed for determining geotechnical and geoacoustic properties of seafloor sediment wherein the undrained shear strength and dynamic shear modulus of such sediments can be quantified. Features of the deceleration profile of a seafloor penetrometer are compared to a data base of known insitu properties of seafloor sediments to determine a correlation between the features of the deceleration profile, such as maximum deceleration or jerk, and the seafloor sediment undrained shear strength. The damped oscillatory portion of the penetrometer deceleration profile, which occurs after plastic deformation and further permanent penetration into the sediments ends, is analyzed to determine the dominant or resonant frequency of the oscillations. This dominant frequency can be used to determine the seafloor sediment dynamic shear modulus.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: October 28, 1997
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Robert D. Stoll, Tuncay Akal