ESDU 81022 provides guidance on the use of the analytical procedures presented in ESDU 79016 and ESDU 80039 as aids in the design of bonded joints. Examples of the adhesive material properties required for use with the data are given together with recommendations on how to obtain such properties. Attention is drawn to important factors affecting joint strength not covered by the analytical procedures and references are provided as a source of further information. Notes are also provided on the principal complementary or alternative methods currently available.
This Data Item contains 9 interactive graph(s) as listed below.
Graph
Title
Figure 1a
Comparative shear stress distributions in a 4-step double lap joint using Item Nos 79016 and 80039 (elastic range)
Figure 1b
Comparative shear stress distributions in a 4-step double lap joint using Item Nos 79016 and 80039 (inelastic range)
Figure 2
Load capacity of single-step double lap joint with three different adhesives, using Data Item No 79016 (assuming: qa(max) = qF and gammamax = gammaF)
Figure 3a
Variation in peak stresses with N for single lap joint, using Item No 80039 (elastic) structure length, end load and nominal plate thickness constant. Step length and thickness difference constant for each value of N
Figure 3b
Variation in load capacity with N for double lap joint, using Item No 79016 (inelastic, shear lag), gammamax = 0.1 (constant)
Figure 6
Shear stress-strain curves obtained from napkin ring or round bar torsion tests at room temperature (some curves are coloured and broken for clarity of reading)
Figure 7
Shear stress-strain curves obtained from napkin ring or round bar torsion tests at room temperature (some curves are coloured and broken for clarity of reading)
Figure 8
Shear stress-strain curves obtained from thick adherend tests at room temperature (some curves are coloured and broken for clarity of reading)
Figure 9
Shear stress-strain curves obtained from thick adherend tests at room temperature (some curves are coloured and broken for clarity of reading)
