Strength of a Textile Webbing Connection

Textile webbing straps are usually connected to a load by insertion of a bolt or fitting through a looped end in the strap. The strength and efficiency of such a connection are analyzed in this paper. Several simplifying assumptions, e.g., a linear elongation- load characteristic for the webbing, negligible friction, etc, are made. The analytical results are compared with test data for Nylon and Dacron webbing straps with various end-loop configurations. The comparison shows that the analysis of loop strength and efficiency is approximately correct. Both theory and test data indicate the need for close specification of loop configuration parameters during design.