Weight reduction is often a key factor in modern mechanical design, therefore materials such as carbon fibre reinforced plastics (CFRP) are increasingly used and integrated within multi-material structures using adhesive technologies, which require high effort difficult to disassemble. The capability of blind rivet nut (BRN) join different without these disadvantages has created growing industr...

This paper deals with modeling and simulation of sparking occurrence in fastening assemblies. The principle consists to calculate in three dimensions the distributions of current density and temperature in the structure over time, and to derive some physical criteria to estimate the possibility of sparking occurrence. Simulations are performed with a Finite Volume Method in time domain and an u...

Cold forging has played a critical role in fasteners and has been widely used in automotive production, manufacturing, aviation and 3C (Computer, Communication, and Consumer electronics). Despite its extensive use in fastener forming and die design, operator experience and trial and error make it subjective and unreliable owing to the difficulty of controlling the development schedule. This stu...

Brace sleeve (BS) fasteners, i.e., nut and bolt, are small components but play essential roles in fixing BS cantilever railway catenary system. They commonly inspected by onboard cameras using computer vision to ensure the safety of operation. However, most fasteners cannot be directly localized because they too inspection images. Instead, is first for detecting fastener. This leads a new probl...

A common lateral force resisting system for cold-formed steel (CFS) buildings consists of shear walls sheathed with oriented strand board (OSB). Previous experimental and computational research on CFS shear walls, as well as those with other framing materials, has demonstrated that the complex interaction of the fasteners with the sheathing is an important factor in the nonlinear behavior of th...

ADVANCED MATERIALS & PROCESSES • AUGUST 2014 18 F asteners play a critical role in engineered structures as a method of nonpermanent joining for the aerospace, infrastructure, civil, automotive, energy generation/distribution, and many other industries. Fastener failures can lead to disastrous consequences and substantial financial losses. One of the most common fastener failure modes is fatigu...

BACKGROUND/AIMS To determine the prevalence and time-course of t-fastener migration after gastropexy deployment. METHODS We reviewed our procedural database for all percutaneous gastrostomy and gastrojejunostomy tube insertions performed over a 14-month period using a widely accepted t-fastener kit for gastropexy (Kimberly-Clark). Of 201 patients, 71 (41 males, 30 females; mean age, 56 years)...

Missing fastener detection is a critical task due to its similar characteristics with surrounding environments. In this paper, a machine vision based fully automatic detection and classification of missing fastener detection system is proposed using Support Vector Machine (SVM) classifier. This proposed system consists of preprocessing, transformation, feature extraction and classifications. Im...

The ®nite element alternating method is extended further for analyzing multiple arbitrarily curved cracks in an isotropic plate under plane stress loading. The required analytical solution for an arbitrarily curved crack in an in®nite isotropic plate is obtained by solving the integral equations formulated by Cheung and Chen (1987a, b). With the proposed method several example problems are solv...