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<![CDATA[Analisis Pengaruh Variasi Penambahan Fly Ash terhadap Kekuatan Tarik Komposit Serat Sabut Kelapa sebagai Alternatif Material Dinding Ruang Akomodasi Interior Kapal ]]>
<![CDATA[Virgiana Kusuma Pratiwi]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Widya Emilia Primaningtyas]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 6 No 1 (2022): Conference on Design and Manufacture and Its Aplication ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[Indonesia is a maritime country so that ships are transportation that supports economic movement. The government's policy of prioritizing the maritime sector in national development has a positive impact on the domestic shipping industry. The shipping industry over time considered the use of composites as a substitute for wood. This innovation is expected to be environmentally friendly because it is a way of treating waste. The lack of use of coco fiber and fly ash as plantation waste and industrial fuel combustion can be used as opportunities for new environmentally friendly raw materials. It is necessary to use coconut fiber as an alternative natural fiber to synthetic fiber as a reinforcing element from fly ash as a filler in the manufacture of composites. Coconut coir fiber as a reinforce was delignified using 5% NaOH for 120 minutes to reduce the lignin content in the fiber. Analysis of the strength of mechanical properties through tensile tests in accordance with ASTM D638-14 on composite specimens with variations in the addition of reinforcement as much as 10% and 30%, and various variations in the percentage of adding fly ash of 0%, 5%, and 15% to the reinforce. The variation of the composite mixture to the highest tensile strength was obtained by adding 30% reinforce. Specimen 9 with fly ash filler of 15% produced a tensile strength of 27.09 MPa. The mixture of adding reinforcement and filler substitution in coconut fiber composites has a strengthening effect on the tensile strength of the composite. The resulting composite can be used for bulkhead wall material for ship interior accommodation in accordance with SNI 01-4449-2006 regarding fiberboard.]]>
<![CDATA[Rancang Bangun Alat Twist Pipa Hollow ]]>
<![CDATA[Salma Binti Astsalisa]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Tri Andi Setiawan]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 4 No 1 (2020): Conference on Design and Manufacture and Its Aplication ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[This research aims to create a tool that is able to twist the needs of a component of a sofa product. This problem arises because of the need for the process of twisting aluminum components 120mmx30mmx708mm in size. However, existing equipment products are only able to twist sizes less than 8mmx8mm. By using the Ulrich method, identification of tool requirements is carried out to make 3 alternative design concepts. The needs for the main specifications of the tool after an interview is that the dimensions of the tool must be less than 1m x 1.5m and the ability of the tool to twist 10 degrees. Then, best design considered based on the dimensions, operational, strength, assembly, and maintenance. The best concept chosen was 3rd concept which was made with Mild Steel ST42 material, then with a P100 &P102 toggle clamp, and a maximum torsion capability of 73 degrees. The trial got 95% success rate and an additional twist angle of 3 degrees must be added due to the springback properties of aluminum. The total budget for the cost of producing this tool is approximately Rp.8,552,500.]]>
<![CDATA[Pengaruh Intensitas Radiasi terhadap Unjuk Kerja Kolektor Surya Tipe Vcorrugated dengan Penambahan Dimple Balls Posisi Stagger ]]>
<![CDATA[Muhammad Robbi Solikhin]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Priyambodo Nur Ardi Nugroho]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 6 No 1 (2022): Conference on Design and Manufacture and Its Aplication ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[Solar collector use solar heat as heat energy. The heat energy, used for heating and drying. The air of heater consists absorber plate that absorbs solar radiation, channel through the air flows, and transparent cover. In this study, the solar collector was given the addition of obstacles and dimple balls, it could be applied to the absorber plate in the stagger position. This study determined effects of radiation intensity on Vcorrugated performance type solar air heater collector with addition of obstacles and dimple balls on absorbent plate. This research conducted using experimental method with 12mm diameters dimple balls with 0.5L dimple distances from the obstacle. The highest (thermo) energy value is 718.9 Watt/m2 intensities radiation, which is 59.108 Watt, while the highest (design) energy value is 718.9 Watt/m2 intensities radiation, which is 67.363 Watt. The highest (thermo) efficiency value is 64.1% at 431.373 Watt/m2 intensities, while the highest efficiency (design) value is 59% at 431.373 Watt/m2 intensities. This proved the value of efficiency is directly proportional to the heat received by the air and inversely proportional to the intensity of the radiation received, while the value of useful energy is directly proportional to the intensity of the radiation received.]]>
<![CDATA[Perancangan Dudukan Motor Circulating Water Pump (CWP) Menggunakan Metode Elemen Hingga ]]>
<![CDATA[Muhammad Iskandar]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Heroe Poernomo]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[PT X. which is engaged in fabrication, has a CWP motor mount fabrication project with static and dynamic loads of 28,117 Kg. The design is carried out with a structural strength analysis intended to calculate the maximum moment, von mises stress, and deflection. This can affect the productivity of the company. This study aims to determine the value of von mises stress that occurs below the allowable stress. With manual calculation, the maximum von mises stress value on the CWP structure is 32.094 Mpa with a maximum deflection value of 0.323 mm. The maximum von mises stress value of manual calculation is below the permit stress and meets the permit stress requirement with a value of 100 Mpa. So the designed holder is categorized as very good.]]>
<![CDATA[PERANCANGAN DAN ANALISIS STRUKTUR BAJA PENYANGGA TANGKI AIR YANG DITINGGIKAN KAPASITAS 100 M³ PRODUK PT. PELANGI INDOKARYA ]]>
<![CDATA[M. Hilmy Syahfata]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Priyo Agus Setiawan]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[Industries engaged in manufacturing require a water supply. The required clean water capacity of 100 m³ is used to meet industrial needs, with the fulfillment of this amount having a positive impact on the smooth production process and related aspects for daily needs. The water tank is a water storage container with the aim of fulfilling the water supply at a certain height to provide pressure and facilitate the water distribution system. This research designs a steel structure supporting a water tank to support these needs. The tank tower structure is designed by considering several loads that will be received. The design method used is the Ulrich method, which involves creating three design concepts from which one of the best designs will be selected according to the selection criteria. The design of the steel structure supporting the water tank is carried out through strength analysis with Ansys Mechanical APDL software to determine the amount of stress obtained from the combination of loading received. This research results the steel structure supporting the water tank in the selected design concept shows a maximum stress value of 6.5 kg/mm2. The value obtained is still below the maximum allowable stress value of 16.67 kg/mm2. The total budget for steel structural materials in the form of profiles and plates is Rp 1,197,129,128.00.]]>
<![CDATA[Analisis Tegangan pada Struktur Sasis Lowbed Trailer dengan Metode Elemen Hingga ]]>
<![CDATA[Friska Nur Anggraeni]]>;
<![CDATA[Mohammad Miftachul Munir]]>;
<![CDATA[Mohamad Hakam]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[The demand for heavy equipment is rising alongside industrial growth. The 120-ton Lowbed Trailer Dolly, owned by CV. XYZ, is commonly used for transporting heavy loads. Its chassis structure is crucial for supporting the truck and cargo. Structural analysis can help determine the strength and critical points with the highest stress, as well as the necessary structural stability to withstand the applied load. To understand the stress distribution and loading conditions, theoretical calculations were performed for comparison, along with 3D modeling using two types of beams: flat and arch. Furthermore, finite element analysis was conducted using Fusion 360 software (Education License). Theoritical calculation had a stress of 149.74 MPa and the stress analysis showed the flat-type beam had a stress of 168.925 MPa (below the maximum allowable stress of 233.33 MPa), while the arch-type beam had 267.097 MPa (exceeding the maximum allowable stress). Thus, the flat-type model is considered safe for a 120ton load. The percentage error between theoretical calculations and simulation results is 11.39% for flat-type and 43.49% for arch-type models.]]>
<![CDATA[ANALISIS KEKUATAN KONSTRUKSI ALUMINIUM STERN RAMP DOOR SYSTEM WIRE ROPE DENGAN METODE ELEMEN HINGGA ]]>
<![CDATA[Koko Tri Prayogi]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Dian Asa Utari]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[One important construction that needs to be considered on the ship is the stern ramp door. This is because the stern ramp door construction will receive both static loads during its operation. The strength of a structure makes a very important contribution to the overall safety of the system. This study aims to analyze the construction of the stern ramp door to be at a safe limit when used. The analysis method used is the finite element approach (FEM). The output of the structural analysis with the FEM method is to solve the deflection and stress in a structure that receives a certain load under appropriate boundary conditions. This study resulted in a maximum stress that occurred at a plate thickness of 6 mm of 75.67 N / mm² or 75.67 mPa this voltage also meets the provisions of the BKI Strength criteria because it does not exceed the voltage of 98.40 N / mm² or 98.40 Mpa. The deflection that occurs at a plate thickness of 6 mm, the front wheel loading has a deflection of 17.6 mm so that the rear wheel loading has a higher deflection than the front wheel by 35.2 mm. Safety factor at 6 mm thick gets a safety factor of 0.76]]>
<![CDATA[Perancangan Ulang Tata Letak Lantai Produksi Berdasarkan Metode 5S (Seiri, Seiton, Seiso, Seiketsu, Shitsuke) ]]>
<![CDATA[Alya Ulfatul Jannah]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Fitri Hardiyanti]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 3 No 1 (2019): Conference on Design and Manufacture and Its Aplication ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[A company engaged in metal casting is building a steel casting project. The layout design in the project has several problems, including the utilization of the area is not optimal, does not pay attention to the proximity relationship between facilities so that excessive movement in material handling occurs. This can affect the productivity of the company. This study aims to determine the total distance of material handling movements so that the selected alternative layout will be obtained. The selected layout can increase efficiency by 4.06% in the total distance of material handling movements. The results of the 5S evaluation using the respondent response sheet on the selected layout have a total score of seiri 4.47, seiton score 4.43, seiso score 4.50, seiketsu score 4.20 and shitsuke score 4.30. Overall, the score is 4.38, so based on the Likert scale it can be categorized as very good.]]>
<![CDATA[Perancangan Ulang Tata Letak Lantai Produksi Berdasarkan Metode 5S (Seiri, Seiton, Seiso, Seiketsu, Shitsuke) ]]>
<![CDATA[Alya Ulfatul Jannah]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Fitri Hardiyanti]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 7 No 1 (2023): Conference On Design And Manufacture Its Application ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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<![CDATA[A company engaged in metal casting is building a steel casting project. The layout design in the project has several problems, including the utilization of the area is not optimal, does not pay attention to the proximity relationship between facilities so that excessive movement in material handling occurs. This can affect the productivity of the company. This study aims to determine the total distance of material handling movements so that the selected alternative layout will be obtained. The selected layout can increase efficiency by 4.06% in the total distance of material handling movements. The results of the 5S evaluation using the respondent response sheet on the selected layout have a total score of seiri 4.47, seiton score 4.43, seiso score 4.50, seiketsu score 4.20 and shitsuke score 4.30. Overall, the score is 4.38, so based on the Likert scale it can be categorized as very good.]]>
<![CDATA[Analisis Struktur Railing Overhead Conveyor ]]>
<![CDATA[Septiani Lestari]]>;
<![CDATA[Mohamad Hakam]]>;
<![CDATA[Mochammad Choirul Rizal]]>
<![CDATA[ Proceedings Conference On Design Manufacture Engineering And Its Application Vol 8 No 1 (2024): Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
Publisher : <![CDATA[Proceedings Conference On Design Manufacture Engineering And Its Application ]]>
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DOI: 10.35991/cdma.v8i1.3105
<![CDATA[The manual material handling process has several disadvantages, including a large workforce and a relatively long time, which hinders the continuity of the next process. So material handling tools are needed in the form of overhead conveyors to simplify the material handling process. This research aims to analyze the strength and feasibility of optimal construction according to company needs. Concentrate on railing and support construction. Requirements data based on company requests with a load capacity of 200kg, track length of 75 m. The final conclusion is that ASTM A36 material is used which has high safety for the overhead conveyor railing construction. The results of the analysis of the railing and support construction show that the von Mises stress value in the construction is 73,85 MPa with a deflection value of 9.08 mm. Meanwhile, for the supports, the von Mises stress results were 5,53MPa and the deflection value was 0,14 mm. The accumulated stresses and deflections that occur in each planned construction, both from manual calculations and simulations, are declared safe, because the stress and deflection values ??that occur in the construction are below the permitted stress and deflection values.]]>
