Abstract
To use the full strength of the riveted member in tension, the section weakened by the rivet holes must be reinforced suitably.
The authors tried two methods of reinforcement, one increases its thickness by reinforcing plates attached on the surface of the main plates by fillet welds, and the other increases its breadth by reinforcing plates attached to both sides of the main plates by butt welds. These reinforcement increase the static tensile strength of the member up to its full strength, but, on the contrary, the stress concentrating effect due to welding will decrease its fatigue strength. To examine this reduction in strength under fatigue loading, the authors performed fatigue tests on riveted joint specimens and its reinforced one, and the experimental results show that each reinforcement attempted are effective below limited cycles for failure respectively, but decrease the fatigue strength at ranges over these limited cycles.
