Carbon fiber-reinforced plastics (CFRPs) are composite materials that play a significant role in the growth of many industrial fields where high performance and lightness structures required. At same time, management at end their life has required development more sustainable efficient recycling solutions. Considering this, present research work aims to investigate mechanical method cutting strategies able machine CFRP components entirety, using common milling job shop scheme, making shorter...

The increasing demand for high-performance materials has led to an increase in the use of carbon fibre-reinforced plastics (CFRPs) recent decades, waste from end-of-life and off-cuts. recycling CFRPs, especially when thermosetting matrices are used, still remains open challenge academia industry, with chemical, thermal mechanical strategies being explored. Among them, methods have garnered growing interest since they do not require high specific energy consumption or expensive apparatus....

The drilling process of carbon fiber-reinforced plastics (CFRPs) is the most commonly employed machining operation due to necessity joining these materials. However, materials are prone delaminate during process, and presence this defect cause rejection for CFRP products, especially those produced aeronautic industry. Therefore, article aims study a strategy (named circular strategy) by using dedicated tools with different diameters, in order reduce extension delaminations. Holes diameters...

Abstract In recent years, the construction industry has increasingly focused on reducing its environmental impact, addressing research efforts towards innovative materials and technological solutions. this context, gypsum-based natural fibers represent some of most promising alternatives in terms sustainability. This paper aims to propose a new gypsum structure reinforced with composite hemp fabric impregnated epoxy resin, investigating manufacturing process mechanical properties,...

The drilling process of CFRPs is the most commonly employed machining operation owing to need for joining these structures. However, materials are prone delaminate during and presence defects can be a cause rejection components. Therefore, this paper aims on study alternative strategies such as: orbital new strategy (called circular drilling) reduce delaminations extension. Holes 8 mm in diameter were obtained by using different cutting conditions their influence forces delamination factor...

Abstract This work is focused on the manufacturing and mechanical characterization of hybrid thin laminates in which reinforcement a combination woven carbon hemp fibers. Two types fabrics that differ areal density were adopted for production samples sandwich configuration (1.8 mm thickness), pure fabricated as reference. An ad-hoc process was presented, low-velocity impacts (at 2 5 J) flexural tests carried out. The results proved that, depending required performance, two plies can be...

Hemp and flax fibers are among the most interesting vegetable that can be used to reinforce polymeric matrices. In line with global environmental requests, use of these especially coupled thermoforming polymers increasing more in order expand their applications replace synthetic thermosetting plastics. However, one major limitations is poor adhesion matrices often overcome by chemical treatments or using coupling agents within matrix. Aiming produce polypropylene (PP) bio composite laminates...

Abstract Advanced sandwich composite structures that incorporate foams or honeycombs as core materials, have been extensively investigated and used in various applications. One of the major limitations conventional materials is their weak impact resistance end-of-life recyclability overall sustainability. This paper focused on study production mechanical characterization hybrid panels using hemp bi-grid cores were manufactured with an ad hoc continuous manufacturing process. Bi-grid...

The incremental sheet forming represents a relatively recent technology that guarantees high customization, thanks to the layered manufacturing principle typical of rapid prototyping, and cost-effectiveness, because it does not require dedicated equipment. Research has initially shown this process is effective in metal materials capable withstanding plastic deformation but, years, interest technique been increasing for manufacture complex polymer components as an alternative conventional...

Abstract Incremental sheet forming has been largely investigated in the last two decades because of its versatility and cost-effectiveness, which make it viable for manufacturing highly customized parts as well small- medium-sized batches. This process allows reaching greater formability compared to conventional sheet-forming processes. In contrast, is affected by defects like twisting, strongly influence geometric accuracy formed parts. These aspects are dramatically accentuated when soft...

The interest of engineering industries in sandwich structures is growing quickly the last year's cause their intriguing properties coupled with development new materials and need for high performance low-weight systems. A construction consists performant outer skins that reinforce a lightweight inner core material; formers provide main load-carrying capabilities, while serves to transfer load between facings. Different results were proposed literature material structure. Among these,...

Closed-cell aluminum foam has attracted increasing attention due to its very interesting properties, thanks which it is expected be used as both structural and functional material. A research challenge the improvement of mechanical properties foam-based structures adopting a reinforced approach that does not compromise their lightness. Consequently, aim this fabrication enhanced samples without significantly original weight. In regard, cylindrical with core closed-cell skin fabrics grids...

As a result of the increasing environmental awareness, concern for sustainability and growing global waste problem, interest bio-composites materials is rapidly in last years order to use them various engineering fields. Tremendous advantages opportunities are associated with these materials. On other hand, some issues related superficial properties bio-laminates, particular wear properties, flame resistance aesthetic appearance have be improved extend application fields Aiming goals this...

Closed-cell aluminium foams are a relatively new class of structural and functional materials that have attracted increasing attention, for which they candidate in many applications several industrial fields. One the aims research can be improvement mechanical behaviour foam-based structures by means reinforcements preserve their peculiar property lightness. In view this challenge, present paper describes production, characterization numerical modelling enhanced foam samples. More...

Abstract. Carbon fibre reinforced plastics (CFRPs) are a very attractive family of materials used in various application fields such as automotive, marine or aeronautic, due to their high specific mechanical properties. However, the large use CFRPs dramatically increases amount waste that derives from end-of-life products and off-cuts generated during manufacturing. In this contest, especially when thermosetting matrices considered, need further study recycling process is an open topic, both...

Metal foams have a number of established niche market and potential applications under investigation due to their peculiarities including thermal, acoustic mechanical properties at low weight. In order produce structures resistant high temperature acting as barrier the fire, metals with closed cells are often required, one most consolidate manufacturing process for production is gas releasing particles decomposition in semisolids, by means which foam created foaming agent dispersed into...

<title>Abstract</title> The incremental sheet forming has been largely investigating in the last two decades because of its versatility and cost-effectiveness which make this technology especially viable for manufacturing highly customized parts, as well small medium-sized batches. One main strengths is that it allows reaching greater formability, compared to conventional processes; contrast, defect phenomena like twisting wrinkling occur frequently strongly influence geometric accuracy...

Incremental sheet forming represents a relatively recent technology, similar to the layered manufacturing principle of rapid prototype approach; it is very suitable for small series production and guarantees cost-effectiveness because does not require dedicated equipment. Research has initially shown that this process effective in metal materials capable withstanding plastic deformation but, years, interest technique been increasing manufacture complex polymer components as an alternative...