In-situ direct shear test for weak rocks

Torunoğlu, Gülay


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Ashrafi, Parinaz; Tönük, Ergin; Bozkurt, Murat; Department of Biomedical Engineering (2015)
Soft tissues of human body have complex structures and different mechanical behaviors than those of traditional engineering materials. There is a great urge to understand tissue behavior of human body. Experimental data is needed for improvement of soft tissue modeling and advancement in implants and prosthesis, as well as diagnosis of diseases. Mechanical behavior and responses change when tissue loses its liveliness and viability. One of the techniques for soft tissue testing is indentation, which is appl...
In-flight calibration of pico satellite attitude sensors via unscented kalman filter
Söken, Halil Ersin (Pleiades Publishing Ltd, 2011-07-01)
In this paper an Unscented Kalman filter based procedure is proposed for the bias estimation of attitude sensors of a pico satellite. Three axis magnetometers and the rate gyros are used as attitude sensors. At the initial phase, biases of three orthogonally located magnetometers are estimated as well as the attitude and attitude rates of the satellite. During initial period after the orbit injection, gyro measurements are accepted as bias free, since the precise gyros are working accurately and the accumul...
In-process tool point FRF identification under operational conditions using inverse stability solution
Özşahin, Orkun; Özgüven, Hasan Nevzat (2015-02-01)
Self-excited vibrations of machine tools during cutting result in process instability, poor surface finish and reduced material removal rate. In order to obtain stability lobe diagrams to avoid chatter vibrations, tool point frequency response function (FRF) must be determined. In classical machine tool studies, tool point FRF is obtained experimentally or analytically for the idle state of the machine. However, during cutting operations, discrepancies are frequently observed between the stability diagrams ...
In-Strip Matching and Reconstruction of Line Segments from UHR Aerial Image Triplets
Ok, Ali Ozgun; Wegner, Jan Dirk; Heipke, Christian; Rottensteiner, Franz; Soergel, Uwe; Toprak, Vedat (2011-10-07)
In this study, we propose a new line matching and reconstruction methodology for aerial image triplets that are acquired within a single strip. The newly developed stereo reconstruction approach gives us better line predictions in the third image which in turn helps to improve the performance of the matching. The redundancy information generated in each stereo match gives us ability to reduce the number of false matches while preserving high levels of matching completeness. The approach is tested over four ...
In-situ bioremediation alternatives for sediments contaminated with hexabromocyclododecane
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Citation Formats
G. Torunoğlu, “In-situ direct shear test for weak rocks,” Middle East Technical University, 1995.