This work deals with the evaluation of adhesive single-lap joints using ultrasound guided waves; in particular, it is intended to characterize signal propagation when defects are present joint by simulation and experimental approaches. The waves developed from matrix formulations. behavior wave modes that exist bonded region characterized. It found its amplitudes can be estimated properties inc...

The performance of veneer joints is known to affect the quality of laminated veneer lumber (LVL), so experimental research and simulation analysis of the tensile properties of lap joints were performed and reported in this paper. The lap length, specimen thickness, and specimen width were selected as the experimental factors. The maximum tensile load increased with the increase of each factor; ...

An adhesive-bonded single lap joint is analyzed using a new fuzzy finite element model. In the model, Young’s moduli and Poisson’s ratios of the joint materials are taken as fuzzy numbers in order to take the uncertainty of the material properties into account. The fuzzy numbers are modeled using linear triangular membership functions. At a selected material point in the adhesive layer, the pos...

BACKGROUND Classic bone lengthening requires patients wear external fixation for the distraction and consolidation phases and there is fracture risk after frame removal. Our technique of lengthening with the Taylor Spatial Frame(TM) and then insertion of a locked plate allows earlier removal of the external fixator during consolidation. Plate insertion is accomplished through a clean pin-free z...

Abstract. This paper presents the concept of concentric peripheral joint. Designed joint was projected to laser welding process, where using keyhole effect deep penetration trough three materials presented. Concept includes elastic stainless steel material as an connector between two pipes. Stainless in form a ring used additional distance element, joined with Presented investigated numerical s...

This study develops three-dimensional (3D) finite element (FE) models of composite retrofits in deficient reinforced concrete (RC) columns and frames. The aim is to investigate critical cases RC with inadequate lap splices bars or corroded steel reinforcements the beneficial effects external FRP jacketing avoid their premature failure structural collapse. Similarly, RC-frame FE explore an innov...

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...