Topography characteristics and formation mechanism of the bolt-hole contact interface during the bolt installation of interference-fit composite structure

Critical Analysis of the Current Trends in Ensuring the Holes Quality when Drilling CFRP/Titanium Alloy Stacks

“…Якість отворів у пакетах ВПКМ/метал є ключем до забезпечення надійності та довговічності болтових і заклепкових з'єднань у сучасному авіабудуванні [9]. Саме тому у більшості наукових робіт з механічної обробки пакетів розглянуто аспекти і фактори, які впливають на якість отворів.…”

Effect of interference installation method on interfacial properties and fatigue failure behavior of bolted composite joints

“…Interference-fit joints have been proposed as a means of fatigue life enhancement for mechanical joining of aerospace composite structures to alleviate the stress concentration problem of clearance-fit joints under external loads, thereby extending the service life of the structure. [5][6][7][8][9] The effect of clearance on the mechanical properties of composite bolted joints has been reported. [10][11][12][13][14][15][16][17][18][19][20][21] For example, Yang et al 9 investigated the microscale damage and formation mechanism of the bolt-hole contact interface during interference-fit bolt installation of composite structure, and results showed that the main characteristics of the hole-wall surface during interference bolt installation is material shedding and gap filling, but the damage to the hole wall increases with the interference size.…”

“…[5][6][7][8][9] The effect of clearance on the mechanical properties of composite bolted joints has been reported. [10][11][12][13][14][15][16][17][18][19][20][21] For example, Yang et al 9 investigated the microscale damage and formation mechanism of the bolt-hole contact interface during interference-fit bolt installation of composite structure, and results showed that the main characteristics of the hole-wall surface during interference bolt installation is material shedding and gap filling, but the damage to the hole wall increases with the interference size. Raju et al 20 found that an interference-fit bolted joint had approximately 10% higher load sharing than that of a neat-fit joint by finite element analysis and experiment.…”

Tensile behavior of the bolt‐jointed GFRP after low‐velocity impact

“…To enlarge the scope of FRP's application, since its brittle and anisotropic properties, which are its parts of primary disadvantages to traditional metal materials, it is necessity of the improvement on advanced joint technology. Overall, there are two main joint methods, the adhesive bonding technique, [20,21] lower weight and fewer components, and the bolt joint technique, [22][23][24] higher reliability, commonly used technologies for composite constructions. Mechanical bolted shear connections are the primary connection type of pultruded FRP material because they are familiar and easy to use.…”