SIR,-We have to-day agreed to withhold our resignations for three months, a concession of
considerable value to the Ministry. It is essential that we use this time to advan-tage, …

The Natural Excitation Technique (NExT) is a method of modal testing that allows structures
to be tested in their ambient environments. This report is a compilation of developments and …

The Natural Excitation Technique(NEXT) has been developed to estimate modal parameters
using insitu response measurements with a lack of detailed knowledge of the input forces. …

Wind turbines are immense, flexible structures with aerodynamic forces acting on the rotating
blades at harmonics of the turbine rotational frequency. These harmonics are comparable …

Screening for disease is becoming an increasingly familiar aspect of health care, with new
procedures and protocols regularly being presented and debated in the medical press. …

A technique called the Natural Excitation Technique or has been developed to response
extract response parameters from large operational structure when subjected to random and …

We have measured modal damping using strain-gauge data from an operating wind turbine.
This new technique for measuring modal damping is easier and less expensive than …

The structural dynamicist s areas of responsibility require interaction with most other members
of the wind turbine project team. These responsibilities are to predict structural loads and …

The Space Shuttle Vehicle is assembled in the Vertical Assembly Building (VAB) at Kennedy
Space Flight Center in Florida. The Vehicle is stacked on a Mobile Launch Platform (MLP) …

Initial damage detection/health monitoring experiments have been performed on three different
operational structures: a fracture critical bridge, a composite wind turbine blade, and an …