The framework of the peanut shelling machine functions as a supporting structure for the components of the peanut shelling machine, namely the top funnel, funnel retaining frame, the lid on the peeler shaft, pulley, sieve shaft, sieve, engine body. Frame material is mild steel equal leg angles size 45 x 45 x 5, yield strength is 3,002E + 04 psi and tensile strength is 5.004E + 04 psi. Skeletal strength analysis was carried out using the autodesk inventor professional 2015 software. The engine frame was given axial loading of 500 N, 600 N, 700 N, 800 N, 900 N, and 1000 N. The analysis results of the maximum stress occur at 1000 N loading, amount to 16.85 Mpy, and the maximum deformation occurs at 1000 N loading, amounting to 0.07727 mm.

Welding is the connection of the two metal materials into one, using a heat process without any pressure, defined as a metallurgical process. In the world of industry and metal welding which is used to construct construction is low carbon steel as the base material, and fracture is the nature of steel. This study aims to determine the effect of the type of electrode and current strength on the mechanical properties of welding results on ASTM A36 Steel. This research uses experimental research methods. In the welding process using ASTM A36 steel material on a specimen with a size of 100 mm x 25 mm x 8 mm in a flat / flat position (G1) using V. The type of electrode used is RB 2.6, RB 3.2, and LB 52 2.6 with variations in the flow of 70 A, 80 A and 90 A, which are then carried out by tensile test. The results of the research that have been done show that the value of tensile strength at the RB electrode 2.6 with a welding current of 70 A is 355.504 Mpa, 80 A is 439,795 and 90 A is 472,011 Mpa. For RB 3.2 electrodes with a welding current of 70 A of 263,955 Mpa, 80 A of 376,981 Mpa, and 90 A of 342,362 Mpa. At LB 52 2.6 electrodes with a welding current of 70 A at 478,974 MPa, 80 A at 484,172 Mpa, and 90 A at 485,152 Mpa. According to the data, it can be seen the results of welds using LB 52 2.6 electrodes at 90 A currents, with a tensile strength value of 485.152 MPa, a stretch value of 27.5%, and an elastic modulus value of 1764,190 N / mm2.

Merauke Regency is the largest regency in Papua with the highest fuel consumption by regency/city in Papua Province. The high fuel consumption is proportional to the emissions produced, so research on emissions absorbing media is needed to reduce emissions. Active charcoal has the ability to adsorption of emissions, one of the raw materials is plants. Bus wood (eucalyptus) which grows a lot in Merauke can be used as raw material for activated charcoal which is used as an absorber of emissions. Research with the title “application of eucalyptus charcoal as emission adsorbent to reduce vehicle exhaust emissions” processes wood logs into emission adsorbents, through carbonation and activation processes, then activated charcoal is applied to vehicle vehicles and subsequent emission tests, to determine emission reduction capabilities. Based on the results of emission tests, the use of activated charcoal as an emission adsorber can reduce emissions. 0.07% CO emissions decreased to 0.01%, HC emissions 84 ppm, decreased to 39 ppm, and 14.7% CO2 decreased 4.4%.

Motorbikes need a swing arm or swing arm to connect the rear wheel to the frame. Static loading is important in planning the main motorbike so that it can run safely. Swing Arm is the main structural part of a motorcycle chassis that serves to hold the rear wheels for driving and as a shock breaker support. The swing-arm is free to follow the road contours and vehicle loads as long as the motorbike moves. This study aims to determine the condition of the motorcycle swing arm static type twin-shock suspension. This type is chosen because it is most widely used by consumers. This research was carried out by making 3D models of swing arms made from carbon steel models. Analysis of static loading on the swing arm structure was simulated using software based on the finite element method so that the value of von stresses and displacement was obtained. The results of the analysis concluded that the swing arm has good characteristics because the maximum von mises voltage of 43.55 MPa is smaller than the total thickness of 350.0 MPa, and the maximum deformation is 0.003923 mm.

There are about 60 species of bamboo belonging to family gramineae found in Indonesia, which is one of them is Petung bamboo (Dendrocalamus asper). Bamboo has the potential to produce environmentally friendly engineering materials. The strength and durability of the material can be increased through the immersion process using chemical or natural solutions, such as sulphur water because it is known to contain carbon elements high enough to support strength increase. The research was started by making thick bamboo slats 1 mm thick, 250 mm long, 10 mm wide, and then woven in plain shapes of 250 mm × 250 mm, then dried at 110 °C for 60 min then immersed in sulfur water. For tensile test using the ASTM D638-02 standart, ASTM D790-02 bending test, ASTM D5942-96 impact test. The test results show the tensile strength increased 89.17 %, bending strength increased 59.90 % and impact strength increased 1.59 %. The highest value of the mechanical test results occurred in sample 1 AB3, while the lowest mechanical test value occurred in 1 TP sample. The microstructure of the 1 TP sample shows a pointed and smooth fracture shape while the sample 1 AB3 has an increasingly blunt fracture shape with fine threads.