In this paper, we report our findings on implementing a synthetic phased array surface acoustic wave sensor to quantify bolt tension. Maintaining proper bolt tension is important in many fields such as for ensuring safe operation of civil infrastructures. Significant advantages of this relatively simple methodology is its capability to assess bolt tension without any contact with the bolt, thus...

The aim of this work is to develop a die material selection criterion for aluminum hot stamping applications. has been based on the back-to-back comparison set reciprocating friction and wear tests. Three representatives belonging different families have selected study: cold steel, cast iron. These tool materials combined with an exemplary member from two heat treatable families: 2XXX 6XXX. Eac...

Abstract The current study is performed on three coated steel sheets to evaluate their mechanical and tribological properties. optical micrograph reveals the dark pearlite structure in ferrite matrix, whereas grain size analysis 4.07 μ m mean of ferrite. scratch hardness test better scratch-resistant properties for all experimental samples. Nanoscratch a decrease friction with increasing load f...

INTRODUCTION Early humans probably used geothermal water that occurred in natural pools and hot springs for cooking, bathing and to keep warm. We have archeological evidence that the Indians of the Americas occupied sites around these geothermal resources for over 10,000 years to recuperate from battle and take refuge. Many of their oral legends describe these places and other volcanic phenomen...

In the present work, some MoS2 and WS2 nanosheets were prepared characterized. Depending on preparation procedures, trigonal prismatic (2H) or octahedral (1T) coordination of metal atoms obtained, exhibiting metallic semiconducting character. Both found large nonlinear optical (NLO) response, strongly dependent their So, character 2H-MoS2 2H-WS2 exhibit positive absorption strong self-focusing,...

INTRODUCTION: Cannulated screws, along with guide wires, are commonly used for a variety of orthopedic indications. Typically they are used for fractures in cancellous regions. Breakage or bending deformation of the guide wire is a clinical concern. Therefore it would be advantageous to use Co-Cr alloys such as MP35N and L605 in these applications as the occurrence of breakages and bendings wou...

In this paper, a new optical approach based on omnidirectional thermal visualization system is proposed. It will provides observer or image processing tool a 360 degree viewing of surrounding area using a single thermal camera. By applying the proposed omnidirectional thermal visualization system even in poor lighting condition, surrounding area is under proper surveillance and the surrounding ...

Abstract The presented research investigates a digital fabrication method for custom glass building elements based on three-dimensionally (3D) printed molds. Custom parts with specific geometries usually require several steps of manufacturing, highly specialized craft, or machinery. Computer Numerical Control milled steel molds are only suitable large lot sizes due to their high cost and limite...

Contract (custom) manufacturers of components and manufactured materials such as steel sell capacity under different contract terms to different buyers. In a common practice, the supplier offers a market standard price and lead time combination for products listed in its catalog. At the same time, it strikes annual contracts with some high-volume customers who require recurring delivery of a cu...

DNA nanotubes offer a high aspect ratio and rigidity, attractive attributes for the controlled assembly of hierarchically complex linear arrays. It is highly desirable to control the positioning of rungs along the backbone of the nanotubes, minimize the polydispersity in their manufacture and reduce the building costs. We report here a solid-phase synthesis methodology in which, through a cycli...