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Tests on Tensile Strength of Bolted-Repaired Composite Joints |
WANG Hang1, LI Xiang1, XIE Zonghong1, ZHANG Xiaoqi2 |
1. School of Astronautics, Northwestern Polytechnical University, Xi’an 710072, China;
2. The People’s Liberation Army, 95858 Troop, Shenyang 110035, China |
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Abstract Uniaxial tensile test was used to test the unidirectional tensile strength of the composite plate with penetrating hole damage and the bolted-repaired joints plate containing the penetrating hole damage, and the bolted-repaired composite plate with the damage of the penetrating hole was evaluated. The effect of repair was analyzed, and the failure load, failure mode, and stress distribution of the bolted-repaired composite plate structure containing the damage of the penetrating hole were analyzed. The test results show that: The typical failure modes of the composite plate with penetrating hole damage and the bolted-repaired composite plate with penetrating hole damage are transverse tensile failures; compared with non penetrating hole damage plate, the recovery rate of tensile strength of the repair plate with penetrating hole damage reaches 44.2%; the strain readings indicate that the patch can be relieve the load at the edge of the damage hole of the plate, thereby increasing the tensile strength of the structure effectively.
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[1] |
. COVER[J]. Aeronautical Manufacturing Technology, 2022, 65(3): 1-1. |
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