نتایج جستجو برای: nondestructive method

تعداد نتایج: 1633342  

2015
Brian E. Anderson Marco Scalerandi Antonio S. Gliozzi Michele Griffa T. J. Ulrich Paul A. Johnson

This paper introduces a method to selectively reduce large time-reversed focal events to provide the potential to illuminate smaller events which have been masked by the larger one. The method is demonstrated for two elastic wave pulses emitted simultaneously from two spatially separated sources. The method improves upon the spatial resolution abilities of time reversed acoustics in nondestruct...

Journal: :Applied optics 2004
Glen D Gillen Shekhar Guha

A method to determine the absolute refractive index of materials available in the shape of flat wafers with parallel sides by using interferometric techniques is presented. With this method, nondestructive, sample-specific measurements can be made. The method is tested by using silicon, germanium and zinc selenide, and measurements for both the ordinary and extraordinary axes of ZnGeP2 for temp...

2011
A. Savin R. Grimberg M. L. Craus

This paper presents to use the Resonant Ultrasound Spectroscopy (RUS) as nondestructive examination method for determination of the density changing, elastic and geometrical properties of the object to be examined. The method is applied at the noninvasive evaluation of the femoral head prosthetic and of the artificial cervical discs made from yttria stabilized tetragonal zirconia. This method d...

2013
Bryce M. Whited Matthias C. Hofmann Peng Lu Yong Xu Christopher G. Rylander Ge Wang Etai Sapoznik Tracy Criswell Sang Jin Lee Shay Soker Marissa Nichole Rylander

Bioengineering of vascular grafts holds great potential to address the shortcomings associated with autologous and conventional synthetic vascular grafts used for small diameter grafting procedures. Lumen endothelialization of bioengineered vascular grafts is essential to provide an antithrombogenic graft surface to ensure long-term patency after implantation. Conventional methods used to asses...

Journal: :Transactions of the Japan Society of Mechanical Engineers Series A 2009

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