This study represents the first works on manufacture of reinforcements for composite applications such as yarns and fabrics using a tropical fiber extracted from bast Cola Lepidota (CL) plant. Different types products were produced, including twisted untwisted woven quasi-unidirectional to samples. At each scale, experimental characterizations textile mechanical properties carried out; these ar...

The microstructure in the area of interfacial layer (IFL) structural carbon and glass-reinforced plastics after exposure to a microwave electromagnetic field cured state has been studied. It was found that IFL control experimental samples is characterized by presence formations complex shape with granular morphology, element sizes which are 10-20 nm. increased defectiveness, expressed numerous ...

Original scientific paper In this work, TiC cladded layer has been produced by laser scanning over the preplaced TiC powder on aluminium substrate, using a pulse Nd:YAG laser. Depending on the effective energy density at the specimen surface, TiC was deposited or partially dispersed into the melted aluminium at the specimen surface. Microstructure was evaluated using optical microscopy and SEM/...

Squeeze film dampers (SFDs) are often used in machines with high rotational speed to reduce non-periodic behavior by creating external damping. There are some structural parameters which are of great importance in designing these systems, such as oil film thickness and inner race mass of SFD. Moreover, there is a crucial parameter associated with manufacturing process, under the title of wavine...

A long-standing challenge in structural material design is the simultaneous attainment of high strength and toughness, a conflicting requirement rarely met engineering materials, with important technological applications aerospace, defense, automobile, marine industries. Motivated from examples biological to address this challenge, we demonstrate that strong damage-tolerant carbon-fiber-reinfor...

The excellent mechanical properties of carbon nanotubes (CNTs) make them the ideal reinforcements for high performance composites. The misalignment and waviness of CNTs within composites are two major issues that limit the reinforcing efficiency. We report an effective method to increase the strength and stiffness of high volume fraction, aligned CNT composites by reducing CNT waviness using a ...

Steel and textile cord coating is one of the key rubber processing technologies in tiremaking industry. It is carried out on calendering lines where thickness variation across the sheet profile and downstream is very difficult to fulfill. Recent development of optoelectronics and derived sensory systems has enabled the replacement of traditional radioactive systems for measurement of calendered...

Butt joints are frequently used in assembly processes. However, relatively little attention has been paid to the proper design and selection of butt joint geometries and processes. In this paper, the assembly accuracy performance of different butt joint geometries and joining processes has been studied by using analytical models for part misalignment in the presence of part dimensional errors, ...

Abstract Abrasive wear can have a detrimental effect on machinery, especially in the mining and construction industries. To prolong machinery lifetime cut down energy consumption, thorough understanding of abrasive is essential: surface topography measurement interpretation (including form, waviness, roughness) are vitally important. However, potentially crucial influence intricacies tribologic...