Abstract Lightweight design in the form of intelligent multi-material structures that combine advantages high strength steel and continuous fibre reinforced thermoplastics (CFRTs) gain increasing relevance. In this context, joining operation is a major challenge as it has to be time cost efficient resulting joint exhibit mechanical durability. One possible approach use cold formed pin structure...

An aerospace structure is built from the assembly of structural sub-components involving joining technologies such as welding, mechanical fastening or adhesive bonding. The function joints to ensure load transfer between sub-components. integrity directly depends on strength these joints. In order design critical areas, must be assessed. objective this review paper present approaches for simpli...

Bolted flange joints are commonly utilized in engineering constructions; nevertheless, their dynamic behavior is complicated when nonlinearity present. The bolted joint structure this research considered as a spring-mass system, and the equivalent axial two bi-linear springs-bending beam model, well system’s vibration control equation, created to examine structure’s characteristics under transv...

Many inverse problems involve two or more sets of variables that represent different physical quantities but are tightly coupled with each other. For example, image super-resolution requires joint estimation of image and motion parameters from noisy measurements. Exploiting this structure is key for efficiently solving large-scale problems to avoid, e.g., ill-conditioned optimization problems. ...

An issue of concern in aging aircraft is the growth of multiple cracks emanating from a row of fastener holes, typically in a pressurized aircraft fuselage lap splice. This multisite damage (MSB), or widespread fatigue damage, if allowed to progress, can suddenly become catastrophic. The understanding of the failure behavior dictates the level of compromise between safety and economy. The compl...

this paper presents the results of the assembly process of a gasketed bolted flanged pipe joint for two different bolt tightening strategies, i.e. asme and industrial using torque control of preload method.  the final clamping force is achieved in four and five passes in asme and industrial strategy respectively. axial bolt stress variation, at the end of each pass, individual bolt bending beha...

Bolted joints are widely used in industrial rotating machines to fasten the adjacent disks together and affect system dynamic properties. Therefore, there is a strong need study their influence on response of such systems. This paper investigated effect eccentric phase difference disk bolted-disk joint rotor dynamics, which takes into account time-varying bending stiffness bolted joint. The mod...