Subhamoy Bhattacharya

TL;DR: In this paper, a series of laboratory tests were conducted in which a scaled model wind turbine supported on a monopile in kaolin clay was subjected to between 32,000 and 172,000 cycles of horizontal loading and the changes in natural frequency and damping of the model were monitored.

TL;DR: In this paper, a simplified way of carrying out the design of monopiles based on necessary data (i.e. the least amount of data), namely site characteristics (wind speed at reference height, wind turbulence intensity, water depth, wave height and wave period), turbine characteristics (rated power, rated wind speed, rotor diameter, cut-in and cut-out speed, mass of the rotor-nacelle-assembly) and ground profile (soil stiffness variation with depth and soil stiffness at one diameter depth).

TL;DR: In this article, the fatigue life of homogeneous plate containing multiple discontinuities (holes, minor cracks and inclusions) is evaluated by extended finite element method (XFEM) under cyclic loading condition.

TL;DR: In this paper, a field investigation was carried out around the Tokyo Bay area following the 2011 Mw 9.0 Tohoku (Japan) earthquake, and first-hand observations related to uplift of manholes, settlement of ground, performance of buildings and bridges and the effects of ground improvements are also presented.

TL;DR: In this paper, a series of small scaled tests (1:100, 1:150 and 1:200) of a complete National Renewable Energy Laboratory (NREL) wind turbine model on three types of foundations: monopiles, symmetric tetrapod and asymmetric tripods were applied.