This paper presents the static and fatigue tests of hybrid (bonded/bolted) glass fiber reinforced polymer (GFRP) joints. Nine specimens of single-lap hybrid GFRP joints have been fabricated to study the static and
fatigue behaviors in the experimental campaign. The static tests of uniaxial tension loading are first conducted,
from which the static ultimate bearing capacities of the joints are obtained. High-cycle fatigue tests are subsequently carried out so that the fatigue failure mode, fatigue life, and stiffness degradation of joints can be obtained.
The measuring techniques including acoustic emission monitoring and three-dimensional digital image correlation
have been employed in the tests to record the damage development process. The results revealed that the static
strength and fatigue behavior of such thick hybrid GFRP joints were controlled by the bolted connections. The
four stages of fatigue failure process are obtained from tests and acoustic emission signals analysis: cumulative
damage of adhesive layer, damage of the adhesive layer, cumulative damage of GFRP plate, and damage of GFRP
plate. The fatigue life and stiffness degradation can be improved by more bolts. The S-N (fatigue stress versus
life) curves for the fatigue design of the single-lap hybrid GFRP joints under uniaxial tension loading are also
proposed.
WANG Jinxiao1 (王进潇)
,
CHENG Bin1
,
2
,
3? (程斌)
,
XIANG Sheng1 (向升)
,
LI Sida1 (李思达)
,
YAN Xingfei4 (闫兴非)
. Static and Fatigue Behavior of Hybrid Bonded/Bolted Glass Fiber
Reinforced Polymer Joints Under Tensile Loading[J]. Journal of Shanghai Jiaotong University(Science), 2024
, 29(5)
: 817
-830
.
DOI: 10.1007/s12204-023-2650-7
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