In the present paper, a new type of surface-bonded fiber Bragg grating (FBG) dynamometry bolt is designed. It assumed that adhesive layer linear viscoelastic material and its creep mechanical behavior expressed by standard solid model. The shear strain transfer model FBG sensor established. Additionally, instantaneous quasistatic functions are obtained. validated uniaxial tensile test long-term...

This study investigated the use of self-compacting concrete (SCC) made with recycled coarse aggregates (RCAs), which represents a trend producing environment-friendly concrete, integrated hot-rolled steel sections by means headed stud shear connectors in composite structures. Therefore, thirty-six push-out test specimens were examined to assess strength and behavior embedded RCA-SCC, compressiv...

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 ...

Computer simulations are widely used in the truck industry in order to provide assistance in the product development. Bolt joints are common in trucks. A bolt fracture usually has a great influence on how a truck structure will behave in a crash. Therefore, when simulating truck crashes it is important to be able to predict when bolt fracture occurs. A material model for 10.9 bolts has been cal...

Bolt-nut connectors play an important role in the safety and reliability of structural systems. Stress concentration due to unequal load distribution can cause fatigue failure in bolt-nut connectors. In this paper, the stress distribution in bolt-nut connectors is studied using an axisymmetric finite element model. Various geometric designs proposed in the literature were studied to determine t...

Pre-stress degradation or looseness of rock bolts in mining or tunnel engineering threatens the stability and reliability of the structures. In this paper, an innovative piezoelectric device named a "smart washer" with the impedance method is proposed with the aim of developing a real-time device to monitor the pre-stress level of rock bolts. The proposed method was verified through tests on a ...

Typical insulated precast concrete sandwich panel (PCSP) systems are composed of two wythes separated by a layer insulation. The structural behavior PCSP heavily depends on elements between known as connectors, which ensure they work whole. Double shear tests were carried out 58 specimens reinforced with basalt fiber-reinforced polymer (BFRP) connectors; failure modes, load displacement curves ...