An investigation of inspection criteria for countersunk rivets.
Sanders, Lewis Bend
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An investigation was made of the existing flush rivet inspection criteria and inspection methods to establish a norm for commercial flush riveted joints. Studies were made of thirty-four flush riveted joint load deformation curves to obtain their general characteristics and to establish some correlation of yield load as defined in ANC-5 and as defined in Report on Flush Riveted Joint Strength by ARC Rivet and Screw Allowables Subcommittee (Airworthiness Project 12). The specimens corresponding to the load deformation curves were comprised of 18 machine countersunk joints, 12 double dimple joints and four sub-countersunk joints. Within each type of joints the specimen varied in series of sheet material and thickness, rivet material and rivet size.
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