Kebutuhan akan energi semakin meningkat seiring bertambahnya populasi manusia. Upaya mencari sumber baru terus dilakukan termasuk Energi Baru Terbarukan (EBT). Salah satu yang banyak dikaji dan diteliti dikembangkan adalah biomassa dimana di antara produk dari bersumber briket arang tempurung kelapa. Permintaan kelapa terutama luar negeri. Namun sebagian ternyata tidak diterima pasaran negeri bahkan dalam juga ada menolak dikarenakan kualitas memenuhi standar. Briket mempunyai persyaratan...

- In this research, the focus is on joining dissimilar aluminium alloys 5052 (heat treatable) and 6061/T6 (nonheat using friction stir welding (FSW) method with tool rotation speed parameters of 1460 rpm travel 30 mm/s. The results FSW joint were given post-welding heat treatment (PWHT) in solution treatment, quenching water, then artificial ageing. Macro photographic observations showed width TMAZ both sides zone reduced speciment post compared to as welded speciment. hardness value...

Electrical insulation materials are a critical component in the design and development of electrical systems, playing crucial role ensuring safe efficient transmission distribution power. The aim this study is to examine effect incorporating rice husk ash silane on hydrophobicity, leakage current, tensile strength properties composite specimens. This focused fabricating composites by varying filler concentrations, using epoxy resin as matrix. specimens RTV 10, 20, 30, 40, 50 utilized...

Hydroxyapatite is generally utilized in medical fields especially as a substitute to bone and teeth. nanoparticles have been succesfully synthesized from green mussel shells source of calcium carbonate by hydrothermal method. The were calcined, hydrated, undergone carbonation form Precipitated Calcium Carbonate (PCC). PCC was then added with (NH4)2HPO4 the mole ratio Ca/P = 1.67. Hydrothermal reaction carried out at 160oC variations holding time (14, 16, 18 hrs). formation hydroxyapatite...

Abstract With the increased emphasis on use of recyclable bio-based materials and further understanding mechanical properties laminated bamboo, development a new generation low-cost bamboo-based composites for ship structure has generated significant interest. Laminated bamboo comprising Apus ( Gigantochloa apus ) Waru fiber at different layer orientations were investigated to obtain characteristics. The influence laminate directions was studied through several methods testing, including...

Developing efficient and reliable gas sensors for the simultaneous detection of multiple gases is paramount in various fields, specifically healthcare, biological, biomedical applications.

This study explores the potential of agricultural waste fibers, specifically banana and areca nut husk, as sustainable reinforcements in epoxy-dammar gum composites. Composites with 80% epoxy 20% dammar (Mat.1) achieved highest tensile strength (24.23 MPa) bending (13.12 MPa), while increased content Mat.2 (70% epoxy, 30% gum) Mat.3 (60% 40% decreased performance. Among fiber-reinforced composites, Mat.B (64% 16% gum, fiber, 10% fiber) exhibited superior (15.12 (59.46 Mat.A each fibers)...

Anterior cruciate ligament (ACL) reconstruction frequently employs the bioabsorbable interference screw, which is 3D printed with biocomposite filaments. The purpose of this research was to construct screws using printing filaments (HA, PLA, and PCL) at different nozzle temperatures. In experiment, temperatures 190, 195, 200, 205°C were used. Density tests, torsion fracture analysis, biodegradable tests also used characterize screws. A simple finite element model (FEM) tibial screw fixation...

The Twin Wire Arc Spray (TWAS) is one of the most widely used types thermal spray coating because its low cost, high efficiency and can also be for mass production. However, heat treatment after Fe-based amorphous process uses TWAS method on pump impellers made 304 stainless steel are not well documented. purpose this study to determine effect post FeCrBMnSi with increase wear resistance impeller materials steel. In study, NiAl were as bond coats top coats. Before process, substrate...

Proses elektroplating bertujuan membentuk permukaan logam dasar dengan sifat atau dimensi yang berbeda. Penelitian untuk mengetahui pengaruh suhu dan waktu terhadap nilai ketebalan kekasaran permukaan, menggunakan spesimen berupa plat baja karbon rendah berjumlah 27 buah panjang 40 mm, lebar 28 mm tebal 1.8 sebagai dasarnya sedangkan tembaga nikel pelapisnya. Kondisi pelapisan variasi 300C, 400C 500C, pencelupan 5, 10 15 menit voltase 6 Volt. Sedangkan 450C, 550C 650C menit, 10, 20 30 9...

Apus bamboo fiber (Gigantochloa Apus) is a type of natural that environmentally friendly, economical and easy to obtain. This research aims improve the quality apus as composite reinforcement by immersing it in NaOH Silane chemical alkaline solutions. fibers have been subjected treatment are then fed into mold mixed with resin form material mechanical strength fiber. Mechanical tests carried out determine properties composites. The standards used SNI 03-3960-1994 03-3399-1994. test results...

The high growth of Water Hyacinth/Eichhornia crassipes (WH) led to several problems such as ecosystem, irrigation, and sedimentation. rapid water hyacinth in natural rivers, reservoir, lake canals causes drainage many nations. As a result, local offices must spend significant annual budgets dispose wastes. Meanwhile, cellulose fiber from WH had potential application composite (NFC). This study investigated the development use wastes for production unidirectional dan weaved epoxy resin...

Hand paralysis can inhibit daily activities, for example, grasping a particular food or an object. With the advancement of science and technology today especially in wearable robot technology, normal hand function be recovered with help soft robotic glove. This has mechanism that resembles working itself. The purpose this study is to develop low-cost exoskeleton glove made from silicone rubber using tendon-based mechanism. molding designed SolidWorks CAD software. Dual-slack enabling...

This study aims to investigate the mechanical properties of bamboo apus (gigantochloa apus) as a natural reinforced composite material. Bamboo’s laminates gigantochloa were used reinforcement on epoxy resin matrix. The parameters examined in this are configuration lamina and compaction pressure. Laminate varies number, thickness direction lamina. Compaction pressures 1.5 MPa, 2 2.5 MPa fabricate Laminated Bamboo Composites (LBCs). stem with length 400 mm was split obtain size 400×20 mm. is...

A hand is one of the essential limbs on human body that used for daily activities. The aim this research to develop a soft exoskeleton assist people with deterioration. developed exo-glove made low-cost RTV (room-temperaturevulcanizing) silicone rubber motor-tendon actuation system produces flexion and extension motion. Here, actuator converts rotation motion into linear from DC motor, while potentiometer sensor utilized measure therotation angle system, in which fuzzy logic control (FLC)...

Elektroplating adalah proses untuk melindungi logam dari pengaruh lingkungan. Penelitian ini bertujuan mengetahui konsentrasi larutan dan arus listrik terhadap ketebalan lapisan nikel. Pada penelitian variabel bebasnya larutan. Arus divariasikan 50, 55, 60 A. Konsentrasi menjadi 3 yaitu 1 (NiSO4 300 gr, NiCl2 40 H3BO3 40gr, H2O 1000 ml), 2 325 45 ml) 350 50 1000ml). Spesimen berupa plat baja karbon rendah berukuran 50mm x 30mm 1.8 mm sebanyak 27 buah. 1, besar tidak berpengaruh 3, semakin...