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All Journal Jurnal Ilmiah Giga Bina Teknika Jurnal Teknologi Kedirgantaraan (JTK) Jurnal Bimas Islam

Zayadi, Ahmad

Program Studi Teknik Mesin, Universitas Nasional

Author-ID : 706388

Religion Aerospace Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Social Sciences Transportation

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Perencanaan Lift Hotel Bertingkat Tiga Puluh Berdasarkan SNI Nomor: 03-6573-2001 Masyhudi, Masyhudi; Zayadi, Ahmad; Prasetyo, Cahyono Heri
Jurnal Ilmiah Giga Vol 18, No 2 (2015): Volume 18, Edisi 2, Desember 2015
Publisher : Universitas Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (25.738 KB)

ABSTRAK. Banyaknya gedung-gedung tinggi yang dibangun seperti zaman sekarang ini, menyebabkan tranportasi vertikal di antara lantai gedung-gedung tersebut semakin di butuhkan. Elevator atau lift merupakan salah satu dari alat transportasi vertikal yang banyak di gunakan saat ini, hal ini di sebabkan perjalanan antar lantai dengan menggunakan elevator di dalam gedung tersebut lebih menghemat waktu dan tenaga di bandingkan dengan menggunakan tangga. Lift ini juga di bedakan jenisnya berdasarkan pemakaian, antara lain, lift untuk penumpang, lift untuk barang, lift untuk kendaraan, lift untuk pasien, dan juga lift dump waiters. Perencanaan bangunan ini adalah bangunan hotel berlantai tiga puluh dengan luasan perlantai 1200 mÂ². Pemasangan lift ini dibagi menjadi dua zona, zona 1 yaitu dari lantai 1sampai dengan lantai 15, dan zone 2 yaitu dari lantai 16 sampai dengan lantai 30. Mempunyai waktu perjalanan bolak-balik untuk zona satu selama 159,2 detik, dan zona dua selama 167,04 detik. Membutuhkan 10 buah lift, mempunyai waktu menunggu untuk zona 1 selama 31,8 detik, dan untuk zona dua selama 33,4 detik. Mempunyai daya angkut untuk zona satu sebanyak 188 orang dan zona dua sebanyak 180 orang, beban puncak zona satu sebanyak 138 orang dan 158 orang, daya listrik untuk zona satu sebesar 204 Kwh dan zona dua sebesar 340 Kwh.Kata Kunci : Perencanaan, Elevator, SNI

ANALISIS KEGAGALAN PISTON PADA KENDARAAN RODA EMPAT KAPASITAS 1000 CC Zayadi, Ahmad
Bina Teknika Vol 14, No 2 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (380.014 KB)

Pistons are one of the main components of a 1000 cc engine that functions as a pressure suppressor and a recipient of pressure combustion in the combustion chamber. In the examination of the 1000 cc sedan engine that has been operating for 30,000 hours found a rough sound on the engine and experienced loss compression on the cylinder block number 2. The purpose of the study was to obtain the factors causing the deformation of the piston 1000 cc sedan vehicles. The research method used is metallographic observation using ASTM E 3 and ASTM E 112, testing hardness using ASTM E 92 and SNI 19-0409-1989 and testing chemical composition using ASTM A 751. The results of research on piston damage can be seen that observation macrostructure proves that there is plastic deformation on the surface area of the piston material, the results of microstructure observation are known to occur microcrack on the top surface of the right side of the piston, there is no change in micro hardness between the piston material in the deformed area with the deformed piston material hardness, piston material made of alloy Al-Si. In the area of the piston surface that experiences deformation, Mg2Si and Mg2Al3 compounds are formed, these compounds which cause microcrack on the piston's upper surface. Plastic deformation on the piston surface occurs due to a collision between the piston surface and the cylinder head due to the buildup of crust on the piston surface.

ANALISIS KEKUATAN STRUKTUR SISTEM MEKANIK PESAWAT SINAR-X DIGITAL Zayadi, Ahmad; sudi, Mar
JTK: JURNAL TEKNOLOGI KEDIRGANTARAAN Vol 4, No 2 (2019): JURNAL TEKNOLOGI KEDIRGANTARAAN
Publisher : JTK: JURNAL TEKNOLOGI KEDIRGANTARAAN

Analysis of structural strength of mechanical systems on digital x-ray devices. This research is very important to know the strength and quality of the structure of mechanical system of digital x-ray plane. To research analysis strength structure system mechanical calculation methods were used counting stress, bending stress; the safety factor a tool, and calculate deflection occurring in structure.The result of his research or: the bending stress at order holders catcher of = 7,07 N/mm2, while the bending stress is equal to = 141,9 N/mm2. The bending stress on the tube holder is as big as = 7,8 N/mm2, while the bending stress is equal to= 141,9 N/mm2. Stress von mises in order arms part burden a counterweight of = 19,44 N/mm2, while the value of the safety factor is n = 11,05. Stress von mises in order to arms a part of encumbering tube = 18,41 N/mm2, while the value of the safety factor is n = 11,67. Bending stress happened to column of order = 22,60 N/mm2, while the bending stress is equal to = 141,9 N/mm2. The ball screw move of the operation Fbm = 777,9N. Bending stress occurred on the basis of order = 21,43 N/mm2, while the bending stress is equal to = 141,9 N/mm2. Based on the data has obtained, then structure mechanical system plane digital sinar-x expressed safe and strength.Analysis of structural strength of mechanical systems on digital x-ray devices. This research is very important to know the strength and quality of the structure of mechanical system of digital x-ray plane. To research analysis strength structure system mechanical calculation methods were used counting stress, bending stress; the safety factor a tool, and calculate deflection occurring in structure.The result of his research or: the bending stress at order holders catcher of = 7,07 N/mm2, while the bending stress is equal to = 141,9 N/mm2. The bending stress on the tube holder is as big as = 7,8 N/mm2, while the bending stress is equal to= 141,9 N/mm2. Stress von mises in order arms part burden a counterweight of = 19,44 N/mm2, while the value of the safety factor is n = 11,05. Stress von mises in order to arms a part of encumbering tube = 18,41 N/mm2, while the value of the safety factor is n = 11,67. Bending stress happened to column of order = 22,60 N/mm2, while the bending stress is equal to = 141,9 N/mm2. The ball screw move of the operation Fbm = 777,9N. Bending stress occurred on the basis of order = 21,43 N/mm2, while the bending stress is equal to = 141,9 N/mm2. Based on the data has obtained, then structure mechanical system plane digital sinar-x expressed safe and strength.

ANALISIS KEKUATAN TALI BAJA PADA LIFT SCHINDLER KAPASITAS 1600 KG Zayadi, Ahmad; HP, Cahyono
JTK: JURNAL TEKNOLOGI KEDIRGANTARAAN Vol 5, No 1 (2020): Jurnal Teknologi Kedirgantaraan
Publisher : JTK: JURNAL TEKNOLOGI KEDIRGANTARAAN

Tali baja adalah salah satu bagian terpenting dari sistem pesawat pengangkat. Kekuatan tali baja berbeda-beda, tergantung dari segi pemakaian dan kebutuhan suatu gedung. Konstruksi tali baja yang khas untuk lift terdiri dari 8 pintalan yang dililitkan bersama, arah ke kiri ataupun ke kanan dengan inti ditengah. Tiap-tiap pintalan tali baja terdiri dari 19 kawat yaitu 9.9.1, artinya 9 kawat diluar, 9 di dalam dan 1 di pusat. Luas penampang tali baja (F152) berdasarkan dari tegangan tarik untuk satu tali baja (S) adalah 1,9 cm. Tegangan tarik yang terjadi pada tali baja adalah sebesar (S) = 1894 kg. Sedangkan tegangan tarik yang diizinkan adalah (Smax) = 2800 kg. Kekuatan putus tali baja sebenarnya (P) berdasarkan faktor keamanan dengan jenis mekanisme dan kondisi operasi (K) adalah (P) = 10417 kg. Umur tali baja yang diperoleh dari hasil analisa ini adalah 120 bulan atau 10 tahun dalam pemakaian normal 8 jam per hari. Tali baja yang digunakan tipe: 8 x 19 = 152 + 1 Fiber Core dengan spesifikasi: diameter tali baja (d) : 10 mm, berat tali (W) : 1,15 kg/m, beban patah tali baja (Pb) : 15.400 kg, tegangan patah tali (?b) : 140-159 kg/mm². Dikarenakan tegangan tarik (S) = 1894 kg lebih kecil dari tegangan tarik yang diizinkan (Smax) = 2800 kg, maka dapat disimpulkan bahwa tali baja tersebut aman terhadap beban tarik yang terjadi.

Konseling Perdamaian dalam Konteks Peribahasa dan Saloka Jawa: The Peace Conseling Based on Saloka Taufiqurrahman; Zayadi, Ahmad; Hara, Hara Permana
Jurnal Bimas Islam Vol. 17 No. 2 (2024): Jurnal Bimas Islam
Publisher : Direktorat Jenderal Bimbingan Masyarakat Islam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37302/jbi.v17i2.1347

The purpose of this study is to explore the values of peace contained in Javanese saloka, with a special focus on internalizing saloka values into peace guidance. This research is a research with a qualitative descriptive approach. The data in the study was divided into primary, secondary, and tertiary data. The primary data in this study are Javanese poetry and proverb textbooks by and Javanese expression meanings books by. Based on the results of data analysis, there are several saloka that uphold the principles of harmony, respect, and peace, namely saloka jembar segarane, menang tanpa ngasorake, Crah Agawe Bubrah Rukun Agawe Santosa, and Tepo Seliro. Peace guidance based on local wisdom can be done classically or in groups by adopting peace education procedures which include rational stages of the peace counseling model, exploring the root causes of violence and aggression, reflecting on the phenomenon of violence from a cultural perspective, teaching peace values contained in Javanese proverbs and saloka as alternative problem solving, looking for different forms of violence and eliminate them, and evaluate and follow up peaceful thoughts, feelings, and behaviors. Counselors can train individuals to behave peacefully in both verbal and nonverbal forms. When a person can practice peaceful behavior, then they can suppress aspects of aggressiveness, which include physical, verbal, anger, and hatred.

Analisis Sebelum dan Sesudah Dilakukan Proses Pembersihan Terhadap Performa AC Tipe Split Wall Kapasitas 1 1/2 PK zayadi, ahmad; Yoga Utomo, Kis; Sugiaharto, Agus; S, Wismanto; HP, Cahyono; Madaskala, Ananda Revalby
Jurnal Teknologi Kedirgantaraan Vol 6 No 1 (2021): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Air conditioning in the room functions to regulate humidity, heating and cooling the air in the room. The purpose of this conditioning is to provide comfort for the user. The process of cleaning the condenser and evaporator pipe fins can improve compressor performance. The research was conducted on an air conditioner with a capacity of 1 1/2 PK using refrigerant R-22. With an average mass flow rate of 82.5 kg/s before cleaning and 79.6 kg/s after cleaning, it decreased by 4.4%. This has an impact on refrigeration where the average value of the impact of refrigeration before cleaning is 145.4 kJ/kg and after cleaning is 150.6 kJ/kg. This means that after the cleaning process, the evaporator can increase the refrigeration in the air conditioning system by 3.4%. The parameters used are the consumption of electrical power, the temperature of the refrigerant entering and leaving the condenser, the temperature of the refrigerant entering and leaving the evaporator. The increase in compressor performance after the cleaning process is carried out, it can be seen from the total value of electrical energy use before cleaning is 10.9 kWh, and after cleaning it becomes 8.8 kWh. This has an effect on the consumption of electrical energy to drive the compressor to be more efficient by 19.26%. COP an average of 3.6 before cleaning and after cleaning to 4.9 means an increase in compressor work by 1.3 or by 26.5%. Compressor work has decreased by 4440.4 Watts or a decrease of 26.8%.

AUDIT ENERGI UNTUK MENINGKATKAN EFISIENSI KONSUMSI ENERGI PADA JAKARTA DI GEDUNG Prasetyo, Cahyono Heri; Zayadi, Ahmad
Bina Teknika Vol 15 No 2 (2019): Bina Teknika
Publisher : Faculty of Engineering UPN "Veteran" Jakarta

Energy Audit to Improve Energy Consumption Efficiency in Building D Bank Indonesia, Electrical energy is one of the most important necessities of life for humans. Various human activities require electrical energy. Likewise, the activity in the D building which is one of the buildings in the Office Environment Bank Indonesia (KOPERBI) requires electrical energy is very large. Electrical energy is supplied from PLN 9,500 kVA connected power and back-up generator 5 x 1,500 kVA, equivalent to 7,500 kVA. Distribusui use electrical energy as follows: 8.56% lighting load, air conditioner (AC) 67.72% and 23.72% other building equipment. IKE standard used in Indonesia is the result of research conducted by ASEAN USAID in 1987 that a new report issued in 1992, which for the office's value is 240 kWh / m2 per year. IKE Building D BI is as follows IKE Initial Energy Audit is 250.03 kWh / m2.tahun, IKE Detailed Energy Audit is 239.81 kWh / m2.tahun, IKE Phase 1 After Implementation PHE is 224.02 kWh / m2 .tahun, IKE Phase 2 After Implementation PHE is 219.06 kWh / m2.tahun. Electrical energy consumption in Building the jakarta.

Co-Authors Cahyono Heri Prasetyo Hara, Hara Permana Hendri Hermawan Adinugraha HP, Cahyono Madaskala, Ananda Revalby Masyhudi, Masyhudi Prasetyo, Cahyono Heri S, Wismanto sudi, Mar Sugiaharto, Agus Taufiqurrahman Yoga Utomo, Kis

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