The external bending moment test evaluates a mated connector’s ability to maintain circuit continuity under physical bending. Improperly secured harnesses can place a strain on connectors, a particularly common occurrence in tight areas where perfect routing and strain relief are not possible. In this test, the connectors are mated with one mounted to a rigid panel, while a torque arm applies an increasing force at a constant rate until the specified test torque is achieved. While under stress, continuity of mated contacts is continually measured until test completion.
Parameters of this test that can be changed include but are not limited to: