Joint width increasing bond strength

Figure 7.20 Dependence of shear strength on bond width and bond overlap. Strength increases linearly with increasing joint width. The increase in strength with increasing overlap is gradual after a particular overlap is reached, there is no further increase in joint strength. ...

Figure 5.6 Increasing joint width will increase the bond strength...

As bond area is the product of width (diameter) and length, the strength of the joint will only increase significantly with width once the joint length exceeds some 10 mm. Once again, estimates of joint strength can only be very approximate until appropriate mathematical models and computer software become freely available. 

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