ABSTRACT
Eccentric mass shakers impart controlled harmonic excitation. Using this technique, earlier geotechnical studies were conducted by Keightley (1964, 1966), Jennings & Kuroiwa (1968), and Abdel-Ghaffar & Scott (1978, 1981). The UCLA laboratory includes (Fig. 1) two uni-directional eccentric mass vibrators (Model MK-15) with a wide frequency range (0-25 Hz) and large force capability (100 kips). Synchronization between the two shakers is possible with the use of Vector motor drives. Two or more vibrators, spaced apart
1 INTRODUCTION
Major advances in experimental techniques, instrumentation, and information technologies are facilitating an accelerated pace of innovation and discovery. An effort will be made to present the big picture, in order to highlight the potential inter-play opportunities among a wide range of experimentation options. In the following sections, an overview of developments and advances will be presented to address: i) novel testing facilities and instrumentation, ii) ongoing research directions, and iii) related research outcomes as facilitated by these developments. A discussion of current findings and future trends is also included.
