Abstract:
This research provides an insight into the effect of quasi-static and dynamic loading
coupled with varying degrees of torque in Single-Lap Composite Joints (SLJs). This study
highlights the importance of addressing critical issues of strength reduction in SLJs in
composite materials such as carbon and glass fiber reinforced composites. SLJs are crucial
across various industries, including aerospace, marine and automotive engineering where
their performance is vital. Understanding the behavior of these joints under static and
dynamic loading conditions, particularly under varying strain rates is essential. Tightening
torque of bolt is also a significant factor effecting the performance of SLJs under tensile
loading. The primary research objective is to investigate the influence of different levels of
bolt torque against varying strain rates on the performance of GFRP and carbon fiber joints.
Although the research is ongoing, literature review has revealed the impact of strain rate
on failure modes and stress distribution within these joints.
Samples of SLJs with GFRP and Carbon fiber composite joints have been fabricated
following extensive literature review. Results show that higher strain rates are associated
with progressively lower failure strains. The increased torque levels for constant strain rates
indicate a 3% increase in the ultimate strength of SLJ. However, the failure strains show a
significant decline as torque level increases. The findings will significantly contribute to
enhancing the safety and reliability of composite structures. The work aligns with industry
objectives of achieving superior performance and flexibility in dynamic environments,
where composite joints find integral usage.
