Ultimate strength of high-load-capacity composite bolted jointsPresented are the results of a series of tests initiated to obtain baseline data on the load-carrying capacity of bolted joints designed to carry large loads, specifically up to 222 kN (50 kips). The major testing purposes were to determine the load carrying capacity as a function of the width and thickness of the joint and the diameter and number of bolts, and to observe the failure mode. A total of 100 tests were conducted on three different specimen configurations. The specimens were fabricated from a T300/5208 fiber/resin system in a quasi-isotropic lay-up. The results presented indicate that for a given ratio of specimen width to hole diameter, the specimens with the smaller holes sustained a higher net-section tensile stress before failure. In addition, for a given ratio of specimen width to hole diameter, the thinner specimens withstood a higher net-section stress. No attempt has been made to correlate the results with theoretical predictions.
Document ID
19800036965
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Hyer, M. W. (Virginia Polytechnic Institute and State University Blacksburg, Va., United States)
Lightfoot, M. C. (Old Dominion University Norfolk, Va., United States)