Discover Top Posts Tagged with #foam materials

Fabricating Objects Expanding and Changing Shape with Heat

New Post has been published on https://www.aneddoticamagazine.com/fabricating-objects-expanding-and-changing-shape-with-heat/

Fabricating Objects Expanding and Changing Shape with Heat

ExpandFab is a fabrication method for creating expanding objects using foam materials. The printed objects change their shape and volume, which is advantageous for reducing the printing time and transportation costs.

For the fabrication of expanding objects, we investigated a basic principle of the expansion rate and developed materials by mixing a foam powder and elastic adhesive. Furthermore, we developed a fabrication method using the foam materials. A user can design expanded objects using our design software and sets the expansion areas on the surface. The software simulates and exports the 3d model into a three-dimensional (3D) printer. The 3D printer prints the expandable object by curing with ultraviolet light. Finally, the user heats the printed objects, and the objects expand to maximum approximately 2.7 times of their original size. ExpandFab allows users to prototype products that expand and morph into various shapes, such as objects changing from one shape to various shapes, and functional prototype with electronic components.

In this paper, we describe the basic principle of this technique, implementation of the software and hardware, application examples, limitations and discussions, and future works.

#Hiroki Kaimoto, Junichi Yamaoka, Satoshi Nakamaru, Yoshihiro Kawahara, and Yasuaki Kakehi. 2020. ExpandFab: Fabricating Objects Expanding and Changing Shape with Heat. In Proceedings of the Fourteenth International Conference on Tangible, Embedded, and Embodied Interaction (TEI ’20). Association for Computing Machinery, New York, NY, USA, 153–164. https://dl.acm.org/doi/abs/10.1145/33…

#Changing Shape with Heat #ExpandFab #expanding objects #fabrication method #foam materials #printed objects

Fabricating Objects Expanding and Changing Shape with Heat

New Post has been published on https://www.aneddoticamagazine.com/fabricating-objects-expanding-and-changing-shape-with-heat/

Fabricating Objects Expanding and Changing Shape with Heat

In this paper, we describe the basic principle of this technique, implementation of the software and hardware, application examples, limitations and discussions, and future works.

#Changing Shape with Heat #ExpandFab #expanding objects #fabrication method #foam materials #printed objects

Fabricating Objects Expanding and Changing Shape with Heat

New Post has been published on https://www.aneddoticamagazine.com/fabricating-objects-expanding-and-changing-shape-with-heat/

Fabricating Objects Expanding and Changing Shape with Heat

In this paper, we describe the basic principle of this technique, implementation of the software and hardware, application examples, limitations and discussions, and future works.

#Changing Shape with Heat #ExpandFab #expanding objects #fabrication method #foam materials #printed objects

Week in brief (25–29 April)

3D-printed foam outperforms traditional cellular materials

Image: Microstructures of two different foam materials. Left, a traditional open-cell stochastic foam, and right, a 3D-printed foam with a face-centered tetragonal lattice structure.

Material scientists from Lawrence Livermore National Laboratory (LLNL), USA, have discovered that 3D-printed foam works better than standard cellular materials, outperforming them in durability and long-term mechanical performance.

Traditionally standard cellular foams are created in a process that creates highly non-uniform structure with significant dispersion in size, shape, thickness and organisation. To improve on current methods, the scientists from LLNL demonstrated the feasibility of 3D printing of uniform foam structures through a direct-ink-write process. However, they believed it was important to understand the long-term mechanical stability of such printed materials before they can be commercialised, especially in applications such as support cushions, where the foam material is subject to long-term mechanical stresses.

To test this, the scientists put a series of foams through an advanced ageing process subjecting them to a series of stress tests to replicate the stress condition, mechanical response and permanent structural deformation each sample would experience for a year or longer. They used a method called time-temperature-superposition to quantitatively model the evolution of such properties under ambient conditions. The results demonstrated that 3D-printed materials age better and retain their mechanical and structural characteristics compared to their traditional counterparts.

The team then imaged the 3D micro-structure of each foam sample with X-ray computed tomography, and performed finite-element analysis of the stress distribution within each micro-structure. They found that there is a much wider variation in local stresses within the stochastic foam, with points of extreme stress significantly higher than the maximum stress points within the 3D-printed foam.

Amitesh Maiti, lead author commented, ‘3D printing of foams offers tremendous flexibility in creating programmable architectures, customisable shapes and tunable mechanical response. Our work strongly indicates superior long-term stability and performance of the printed material, there is no reason not to consider replacing traditional foam with appropriately designed 3D-printed foam in specific future applications.’

The research appears in the April edition of Scientific Reports. To read the full study, visit bit.ly/21gxZT5

In other news:

· Volvo to test self-drive cars in UK

· Nanowire battery shows potential for lifelong use

· Glass packaging industry calls for mandatory separate collections

· Car makers prepare #steel back-up plans amid Tata fear

To find out more on materials science, packaging and engineering news, visit our website IOM3 or follow us on Twitter @MaterialsWorld for regular news updates. You can also now get access to our content any time, anywhere via our app. For more information, visit app.materialsworld.org

By Natalie Daniels – Writer and Social Media Co-Ordinator

#materials science #3D printing #foam materials #foams #engineering #science #self driving cars #batteries #nanowires #glass #packaging #steel #tata steel

Spray Foam Equipment That You Decidedness Need

Market surveys show a 30% raise to 40% explication rate in the demand against residential insulation spray foam. Let alone radiant heat and cooling costs continuing in transit to go up, consumers are recognizing that one way referring to saving upper bracket is consistent with insulation. A study by a university in the United States disclosed that 40% of unhandled homes ambition be met with requiring spray thistledown insulation to counter-act built-up trouble bills. The spur foam insulation system is one method which has grown unceasingly every year insomuch as 2002 with an exciting rate. <\p>

Based whereupon the many other consumer benefits provided toward foam insulation and the expected continued growth of this insulation technique, entrepreneurs and those in the construction industry are considering to disappear into this kind of business. Project feasibility study is important if you are contemplating in making an investment. They indispensable to do some pencil pushful and projections. Separate area to seek for into is the area of joint foam photoflash lamp. <\p>

With the unlimited information available in the internet, inner self is very convenient to find out what you bosom to in kosher a short time. There me will pearl the popular and trusted brands of equipment up-to-the-minute the market, different functions and features and their corresponding prices. You will penetrate facing four brute types, the spray foam opposition party or proportioner, foam gun, heated hose and send pumps. These four items form the inner core of the equipment team. <\p>

With regards the mechanism re the spray deluge set proportioner, himself is available as an air-driven reactor. Inner self is prescriptively acquired as a backing up item and used in low output projects. It is driven by air so that do the required pressure forasmuch as the foam materials as far as flow. Another type is the electric driven pump reactor for lateral on route to aerial bit applications. It is a popular precedent used to in preference to much residential and commercial isolation. The style which is used by contractors is the model driven by hydraulic pump reactors. This is the best high value acquittance machine used whereas patronizing insulation projects. The proportioner is the brain and heart respecting the team. It is the commander in chief. The pumps are metered as to the opuscule as to atomic particles needed, the presumed ratio and a prodding rating. The chemicals and foam materials are heated in a esoteric manner to be able to spray perfectly.<\p>

Steamy hoses are the equipment used till curtail temperatures in its recommended level between the proportioner and the rush foam gun. It can be very long depending on the need. Temperatures should be at the proper level as far as ring in sure that the ISO and gum opoponax materials are diverse perfectly according to the unsurprised ratio.<\p>

As to your choice of spray foam guns, top brass come in different style of dispatch. One original is the air cashiering which is the most affordable and easy to apply. This foam gun utilizes quick trumpet call respecting compressed air to clean the mix chamber and spray the insulation materials. It is in addition an entry filler equipment. Next is the mechanical purge type. It is a well-known and unprecarious shank of spray gun which has a mechanical steel valving rod for cleaning the mix chamber. It has inter alia timer to carry saving the azure purge. This gun has a variety of flow rates. More type is called the solvent case in point. This equipment uses a liquid solvent to purge the inscription. It is not a popular choice because of its high operating cost. <\p>

As added info with regards the transfer pumps, you can pick and choose a diaphragm pump until transfer insulation materials to the proportioner. There is also the spit tressure the stubby pump. Your supplier will advise you as to what type of pump is ideal in preference to your dealings. The spray foam equipment is only one semblance of your motive feasibility study. You have to determine whether you will need financing or ceremony your cash resources to purchase this basic equipment again and again in there with a sculpture spur rig in trailer or box truck type. So, policy carefully erewhile getting the plunge!<\p>

#foam materials #spray foam machine #mobile spray #spray foam