During the preschool years, children across all cultures that have been tested seem to come to an explicit understanding of the fact that mental states are related to but ultimately separate from the reality that they are meant to represent. This understanding is sometimes called a representational theory of mind (RTM). I hypothesized that the neurotransmitter dopamine (DA) would be associated ...

A certified aerospace resin (RTM 6) normally utilised for transfer moulding is considered vacuum infusion. The was subjected to simulated infusion conditions by using a specialised thermogravimetric analysis that enables control of pressure as well temperature. By varying conditions, it possible investigate the expected occurrence volatile loses during could cause mechanical or cosmetic defects...

The reinforcement potential of novel nanocellulose-based scaffolding reinforcements composed of microfibrils 5 to 50 nm in diameter and several microns in length was investigated. The cellulose nanofibril reinforcement was used to produce a three-dimensional scaffolding. A hybrid two-step approach using vacuum pressure and hot pressing was used to integrate the nanocellulose reinforcements in a...

The present work study flexural and tensile behavior of short Kenaf fiber reinforced composites. The fibers are chemically treated in 2% NaOH solution at room temperature. Short fibers of 4mm and 8 mm are used in the present work. The composite lamina is prepared by hand molding using isopthalic polyester resin. Flexural test and tension tests are carried out as per ASTM standards. The flexural...

Meningkatnya penggunaan pipa komposit untuk berbagai keperluan seperti pada industri lepas pantai di mana membutuhkan ketahanan korosi yang tinggi, rasio kekakuan terhadap berat tinggi dan rendahnya biaya pemeliharaan menjadi sangat penting. Penelitian ini bertujuan investigasi sifat mekanik dengan menggunakan metode bladder compression molding tekanan 7 bar, temperatur 120ºC ruangan. Menggunak...

Hybrid materials using a macroporous sponge and spherical microporous adsorbents have been developed for an effective rapid pretreatment of water samples. Various adsorbents, including methacrylate series, divinylbenzene (DVB), and graphite particles, were utilized for hybridization with a macroporous sponge consisting of polyethylene and polyvinyl acetate, EVA resin. Both the EVA resin and eac...

Escola de Engenharia , Universidade Federal de Rio Grande – FURG, Av. Itália, Km 08, s/n, Campus Carreiros, CEP 96201-900, Rio Grande, RS, Brazil Departamento de Engenharia de Materiais, Universidade Federal do Rio Grande do Sul – UFRGS, Av. Bento Gonçalves, 9500, CEP 91501-970, Porto Alegre, RS, Brazil Departamento de Engenharia Mecânica, Universidade Federal do Paraná – UFPR, CP 19011, CEP 81...

Perkembangan di bidang teknologi dan sciences belakangan ini mendorong material komposit banyak gunakan pada berbagai macam produk. Komposit yang diperkuat oleh serat alam telah digunakan untuk aplikasi seperti aerospace, otomotif, alat olahraga, papan sirkuit, lain-lain. Dalam sebuah perancangan terdapat beberapa metode biasa digunakan, salah satunya adalah VDI 2221. Metode 2221 menggunakan pe...

The quality of Liquid Composite Molding (LCM) manufactured components is strictly related to the fibrous preform impregnation. As Darcy’s law suggests, resin flow influenced by pressure gradient, geometrical features reinforcement, and viscosity. former two parameters are dictated requirements component other constraints; therefore, they hardly modifiable during process. Resin preheating increa...

Fabrication of steel molds is a major expense (time and cost) in ceramic injection molding research development. 3D printed resin for fast prototyping are therefore highly attractive have gained increasing attention. This paper reports strategies to use sacrificial by fused deposition modeling (FDM) from PVA or digital light processing (DLP) water soluble resin. Usage allows complex geometries,...