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Strength of an Interlocking FRP Connection



Dat Duthinh, K K. Bajpai


The strength of an interlocking fiber-reinforced polymer (FRP) connection was measured in bending, and in-plane and out-of-plane shear. This connection allows the rapid assembly of FRP panels into houses, and can be used in interlocking mode only, or interlocking and adhesively bonded mode. An additional mode was tested, where the connection was adhesively bonded only, without an interlocking toggle. The complete characterization of the behavior of the connection allows rational prediction of the performance of a building assembled with such panels.
NIST Interagency/Internal Report (NISTIR) - 6829
Report Number


adhesive, bending, building technology, composite, connection, fiber-reinforced polymer, interlocking, panel, shear strength


Duthinh, D. and Bajpai, K. (2001), Strength of an Interlocking FRP Connection, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 16, 2024)
Created November 1, 2001, Updated February 19, 2017