Adhesive bonding of components has become more efficient in recent years due to the developments adhesive technology, which resulted higher peel and shear strengths, also allowable ductility up failure. As a result, fastening riveting methods are being progressively replaced by bonding, allowing big step towards stronger lighter unions. However, single-lap bonded joints still generate substantial stress concentrations at overlap edges that can be harmful structure, especially when using...

Abstract In this study, the tensile strength of single-lap joints (SLJs) between similar and dissimilar adherends bonded with an acrylic adhesive was evaluated experimentally numerically. The adherend materials included polyethylene (PE), polypropylene (PP), carbon-epoxy (CFRP), glass-polyester (GFRP) composites. following combinations were tested: PE/PE, PE/PP, PE/CFRP, PE/GFRP, PP/PP, CFRP/CFRP, GFRP/GFRP. One objectives work to assess influence stiffness on since it significantly affects...

PVD (physical vapor deposition) and CVD (chemical have gained greater significance in the last two decades with mandatory shift from electrodeposition processes to clean deposition due environmental, public safety, health concerns. Due frequent use of coatings several industrial sectors, importance studying chromium coating through PVD–sputtering can be realized, investing a real alternative electroplated hexavalent chromium, usually denominated by 6, regularly applied optical products...

There are standard tests to determine the adhesive properties, one of most used being Thick Adherend Shear Test (TAST). This test assumes that deforms only in shear. The method recommends use a special extensometer attached specimen. this needs very experienced technician, addition requiring high costs production. In work, shear deformation is measured with conventional clip gauge for tensile tests. steel correction made using non-contact (optical) gives and numerical analysis. objective...

The single-lap joint is the most commonly used, although it endures significant bending due to non-collinear load path, which negatively affects its bearing capabilities. use of material or geometric changes widely documented in literature reduce this handicap, acting by reduction peel and shear peak stresses alterations failure mechanism emerging from local modifications. In work, effect using different thickness adherends on tensile strength joints, bonded with a ductile brittle adhesive,...

The automotive industry is a pioneer in solutions that meet market expectations. However, the industry, some less environmentally friendly technologies are still used, such as electroplating. Due to legislative restrictions several countries, thin coatings made vacuum have been replacing traditionally by electroplating, mainly decorative terms. This work more focused on use of these for optical applications, namely headlights and exterior backlit components. Although components protected...

Abstract. This study analyses the design and dynamics of a mass-spring-damper system intended to stabilise dynamic platform. Mathematical models MATLAB simulations were employed assess behaviour system. The suspension played crucial role in ensuring stability safety Its primary function is dampen oscillations that arise during motion balance weighted ball on In this study, was placed pipe stand as reference for calculations, verified through analysis, prototype construction, testing....

The automotive industry, like many other industries, uses a wide range of parts produced by the die-cast process. Parts engine blocks, wheel spacers, alternator housings and command cable terminals, are made die casting with different kinds materials aluminium zinc alloys. Despite being reliable process both in terms quantity quality, it is very important to keep parameters controlled, order achieve minimum percentage defective parts, which may be caused several factors such as, porosities,...

Bonded joints are gaining importance in many fields of manufacturing owing to a significant number advantages the traditional methods. The single lap joint (SLJ) is most commonly used method. use material or geometric changes SLJ reduces peel and shear peak stresses at damage initiation sites. In this work, effect adherend recessing overlap edges on tensile strength SLJ, bonded with brittle adhesive, was experimentally numerically studied. recess dimensions (length depth) were optimized for...

<abstract> <p>Laser marking on polymer composite surfaces can be difficult to read and cause readability problems for electronic decoding equipment production lines due poor interaction between the laser fibers used reinforce these materials. This problem solved with right choice of parameters, resulting in savings companies by avoiding such as rejection, scrap customer complaints. The present work uses polybutylene terephthalate/glass fiber (PBT/GF) manufacture instrument panels...

One of the most critical factors in producing plastic injection molds is cost estimation machining services, which significantly affects final mold price. These services’ costs are determined according to time, usually a long and expensive operation. If it considered that parts all different, can be understood correct quick times great importance for company’s success. This article presents proposal apply artificial neural networks time standard parts. For this purpose, large set was shape...

The automotive industry is one of the driving forces global industry; thus, it a very competitive sector which creates constant need for process improvement, regarding productivity, quality, and flexibility. Automation has proven to be viable solution these production problems, with rising adoption automated system by companies that try design implement more flexible systems, while reducing costs improving quality. Furthermore, use automation reduces manpower factor its associated...

The increasing competitiveness installed in the automotive industry implies continuous improvements all fields of knowledge and action. Thus, it is very important to be aware wastes generate across productive logistics operations. In this regard, considering production process command cables for industry, was detected that a significant volume lubricant wasted during task introducing grease into spiral used utilized drive doors, windows brakes motor vehicles. industrial operation carefully...

High pressure die casting is widely used in metalworking industry. Many of the components and devices directly linked to hot parts are subjected severe wear. However, some design updates can enlarge lifespan these devices. This paper proposes show how a sustainable maintenance be obtained by focusing resources on analysis critical problem its consequent mitigation, whereas they originated human, machine/process or supplier level. Design science research (DSR) was iterative methodology chosen...

Currently, there is a lack of affordable and simple tools for the estimation these costs, especially machining operations. This particularly true manufacturing SMEs, in which cost machined parts usually performed based only on required material part production, or involves time-consuming, non-standardized technical analysis. Therefore, tool was developed, calculated times amount material, final drawing requested workpiece. The developed primarily milling machines, considering milling,...

In this work, the shear modulus and strength of acrylic adhesive 3M® DP 8005 was evaluated by two different methods: Thick Adherend Shear Test (TAST) Notched Plate Method (Arcan). However, TAST standards advise use a special extensometer attached to specimen, which requires very experienced technician. present study, displacement for measured using an optical technique, also with conventional inductive 25 mm used tensile tests. This allowed assessment suitability measure parameter. Since...

Polyolefins are especially difficult to bond due their non-polar, non-porous and chemically inert surfaces. Acrylic adhesives used in industry particularly suited these materials, including many grades of polypropylene (PP) polyethylene (PE), without special surface preparation. In this work, the tensile strength single-lap PE mixed joints bonded with an acrylic adhesive was investigated. The included aluminium (AL) or carbon fibre reinforced plastic (CFRP) substrates. substrates were only...

Adhesively bonded repairs offer an attractive option for repair of aluminium structures, compared to more traditional methods such as fastening or welding. The single-strap (SS) and double-strap (DS) are very straightforward execute but stresses in the adhesive layer peak at overlap ends. DS requires both sides damaged structures be reachable repair, which is often not possible. In strap repairs, with patches outer surfaces, some limitations emerge weight, aerodynamics aesthetics. To...