Multi-Component Loadcell for Structural Testings

Abstract

A generalized reaction force at a fixed point of a structure consists of six components which include information on the loads with their eccentricity, the initial imperfection and the deflection of structures. These factors seriously affect the load-deflection relations and the buckling load of structures. But it is usually difficult to measure these in the case of fixed ends structures, spatial structures such as coiled springs and structures deflecting to indefinite direction. In this study, multi-component loadcells consisting of strain trusses have been developed for the testing of the structures listed above. An inline data processing system has also been developed to calculate the six components of the reaction force from the strains of the truss members. Loading tests of the loadcells showed good accuracy and linearity in their structure testing use.