OFS measurement of dynamic loading and long-term residual strain build-up in GRP roof light to
heath and safety executive requirements
SmartPatch sensors were attached to the underside of the structure. Data were collected as 45kg sandbag drops were made from a height of 1.2m (the health and safety executive requirement). Dynamic data showed the maximum strain applied to the structure, and long term measurements showed that residual strain was built-up in the component as a result of successive bag drops.
Figure 1: Dynamic load measurements, single drop
Figure 2: Strain build-up from successive drops