This paper presents a comparative study on single-bolted double-lap joints with steel bolts and glass fibre reinforced polymer (GFRP) bolt. Three types of including plain, galvanised stainless newly developed GFRP bolt were considered. Two preload levels practiced in the experiments, i.e. snug-tight full-tensioning. The torque-preload relationships for different investigated reference to intern...

In the presented research, a split Hopkinson tension bar (SHTB) was used to measure mechanical response of multi-material single-lap joints in high-rate loading regime. High-performance applications require high-quality measurements properties define safe design rules. Servo-hydraulic machines are commonly investigate such small structures, but they prone produce oscillation-affected force meas...

This article aims to compare three plasticity models, namely Bai-Wierzbicki (BW), von Mises and Drucker Prager, predict the failure modes in double-lap metallic bolted joints under shear loading. The joint finite element model has been validated against literature data, which demonstrated application of BW ductile fracture bolt prediction. Taguchi Design is used investigate effects geometrical ...

Online and offline monitoring of composite bolted joints under tensile load were investigated using piezoelectric transducers. The relationships between Lamb wave signals, pre-tightening force, the applied tensile load, as well as the failure modes were investigated. Results indicated that S0/A0 wave amplitudes decrease with the increasing of load. Relationships between damage features and S0/A...

In this research, the influence of bolt preload on the fatigue strength of 2024-T3 aluminium alloy double lap bolted joints has been studied experimentally and numerically. To do so, three sets of the specimens were prepared and each of them subjected to tightening torque of 1,2.5 and 5 N-m and then fatigue tests were conducted under various cyclic axial load levels. In the numerical method, th...

Fatigue crack growth during the service life of aging aircraft is a critical issue and monitoring of such cracks in structural hotspots is the goal of this research. This paper presents a procedure for classification and detection of cracks generated in bolted joints which are used at numerous locations in aircraft structures. Single lap bolted joints were equipped with surface mounted piezoele...

A comparison between two known strategies of modeling lap joint interfaces, namely, zero-thickness and thin layer interface theories and their associated updating procedures, is made. Finite element...

An experimental investigation of the load-bearing behavior and ductility FRP hybrid double-lap joints composed both adhesively-bonded bolted connection parts was conducted. Amongst other things, effects adherends’ fiber architecture (uni- or multidirectional), adhesive type (stiff flexible), displacement rate were examined. The resistances with flexible corresponded to full summation bonded par...

Abstract Parameters which affect shear stiffness characteristics of bolted joints subjected to load should be elucidated in order design mechanical structures for functionality focusing not only on their strength and self-loosening but also stiffness. In this study, we have both experimentally analytically investigated the behaviors a joint primary parameters determine joints. The experiments b...

Over the past few decades, there has been a considerable interest in the use of distributed optical fibre sensors (DOFS) for structural health monitoring of composite structures. In aerospace-related work, health monitoring of the adhesive joints of composites has become more significant, as they can suffer from cracking and delamination, which can have a significant impact on the integrity of ...