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Analysis of the Influence of Changes In Workpiece Rotation and High Speed Steel Lathe Tool Angles on the Surface Roughness of ST37 Workpieces Hilman Sholih; Izar Mahmud Syuhada; Asep Dharmanto; Asep Saepudin; Wilarso; C.W. Mohd Noor
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.11094

Abstract

Turning is a machining process used to shape products by cutting a rotating workpiece with a sharp chisel. One of the problems that occurs in the turning process is the level of surface roughness that does not meet the specified specifications. Even though the dimensions are in, the final product is rejected because the surface is too rough. The level of surface roughness is determined by several factors, including cutting speed, rotation speed and cutting edge geometry. Lathe tool geometry consists of clearance angle, relief angle, rake angle, and back rake angle. This research aims to determine the effect of spindle rotation speed and tool angle on the level of roughness of the workpiece on a lathe. Spindle rotation speed 300 rpm and 600 rpm. The only change in the tool geometry is the clearance angle with angles of 10°, 20° and 30°. The workpiece material used is ST37. The chisel material used is High speed steel (HSS). Testing of the results of the turning process is carried out by comparing the surface roughness with a surface roughness comparator. Cutting speed is not changed. From the research results, the recommended angle is an angle of 10º with the surface roughness results obtained being N5.
Pelatihan K3 di SMK 1 Muhammadiyah Cileungsi, Bogor, Jawa Barat Wilarso, Wilarso; Asep Saepudin; Asep Dharmanto; Muhammad Ilham Alhabsyie
JURNAL ABDIMAS SERAWAI Vol. 4 No. 1 (2024): Jurnal Abdimas Serawai (JAMS)
Publisher : Program Studi Administrasi Fakultas Ilmu Sosial dan Ilmu Politik Universitas Muhammadiyah Bengkulu 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/jams.v4i1.6082

Abstract

Dalam hal keselamatan kerja tidak membedakan faktor umur, jenis kelamin, status, jabatan, semua manusia bisa mengalami kecelakaan kerja jika tidak mengikuti peraturan yang telah diterapkan oleh instansi. Oleh karenanya tujuan dari program PKM ini adalah memberikan pendampingan dasar implementasi terkait aspek K3, agar mereka memiliki bekal dasar mengenai teori K3, jenis-jenis potensi bahaya ditempat kerja dan pentingnya peranan 5R sebagai dasar pondasi program improvement lainnya dan kaitannya dengan unsur safety dalam bekerja, pemahaman dasar ini penting sebagai pembekalan sebelum mereka berkecimpung dalam dunia kerja. Metode dalam pengabdian ini melalui kuliah dan diskusi tatap muka di sekolah SMK 1 Muhammadiyah Cileungsi-Bogor, Jawa Barat. Diharapkan dapat menggugah kesadaran siswa/i dan menjadi budaya positif dan bisa mengaplikasikan pengetahuan tersebut disetiap kegiatan sehari-hari
Pelatihan dasar autocad bagi siswa dan siswi di lingkungan SMK Muhammadiyah Cileungsi Asep Saepudin; Asep Dharmanto; Wilarso, Wilarso; Hilman Sholih; Aswin Domodite; Muhamad Ali Pahmi
JURNAL ABDIMAS SERAWAI Vol. 4 No. 1 (2024): Jurnal Abdimas Serawai (JAMS)
Publisher : Program Studi Administrasi Fakultas Ilmu Sosial dan Ilmu Politik Universitas Muhammadiyah Bengkulu 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/jams.v4i1.6339

Abstract

Kompetensi siswa dan siswi di tingkat Sekolah Menengah Kejuruan sering mengalami kendala dalam hal pemahaman dasar gambar Teknik. Pada saat lulus sekolah tingkat pemahaman dasar gambar Teknik masih rendah. Sehingga tingkat serapan lulusan di dunia industry masih diragukan. Tujuan di selenggarakan pelatihan dasar perihal gambar Teknik ini untuk meningkatkan kompetensi siswa dan siswi di lingkungan SMK Muhammadiyah 2 Cileungsi. Metode dalam pelaksanaannya tatap muka dan mempraktekan cara menggambar Teknik di computer yang sudah terinstall software autocad. Dari hasil pelatihan yang dihadiri 40 peserta, dimana dari kelas teknik kendaraan ringan dan teknik komputer jaringan. Pembukaan kegiatan disampaikan oleh Hilman Sholih, dimana pentingnya pelatihan ini untuk meningkatkan kemampuan siswa dan siswi mengenai dasar gambar teknik. Paparan pengenalan dasar solid word yang disampaikan oleh pemateri pertama Asep Dharmanto. Dalam penjelasan tersebut menjelaskan fitur pada solid word untuk memudahkan dalam mengambar. Paparan kedua disampaikan oleh Asep Saepudin. Paparan perihal pengertian dasar solid word lebih memudahkan dalam proses mengambar 3D. sedangkan penjelasan mengenai dasar autocad, lebih ke 2 D dan menjelaskan dasar symbol yang sering dipergunakan pada cara mengambar autocad. Minat siswa dan siswi selama mengikuti dan ketertarikan perihal gambar teknik cukup tinggi dan diharapkan kegiatan ini berlanjut sampai di level guru dan toolman. Supaya memudahkan dalam proses pembelajaran dikelas
Konsep dan Metode Garap dalam Penciptaan Tepak Kendang Jaipongan Asep Saepudin
PANGGUNG Vol 23 No 1 (2013): Strategi dan Transformasi Tradisi Kreatif: Pembacaan, Pemaknaan, dan Pembelajara
Publisher : LP2M ISBI Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26742/panggung.v23i1.84

Abstract

ABSTRACT This article aims to explore the process of creation of Tepak Kendang Jaipongan by Suwanda. The idea of Tepak Kendang was obtained through four processes: 1) the direct participation of the creator (Suwanda) into the popular arts; 2) the appreciation results of various kinds of art; 3) the stimulation of various kinds of dance movement; and 4) the inspiration of the songs which are sung by the singers (Sinden). Tepak Kendang Jaipongan was sourced from various kinds of genre, namely Ketuk Tilu, Topéng Banjét, Wayang Golék, Kiliningan, Bajidoran, Pencak Silat and Tarling. The many kinds of Sundanese Tepak Kendang were arranged with the concept of ‘freedom’ and ‘novelty’. The method which is used to create Tepang Kendang Jaipongan is ‘ngolah nu aya maké cara: salambar langsung saayana tinu heubeul, ‘janten ku nyalira’, ngarobah nu aya (‘ditambah’, ‘dikurangan’, ‘dipotong’,‘dikerepan’, ‘dicarangan’). Keywords: Method of creation, Tepak Kendang Jaipongan  ABSTRAK Tulisan ini bertujuan untuk menggali proses penciptaan tepak kendang jaipongan dari kreatornya yakni Suwanda. Ide tepak kendang diperoleh melalui empat proses yaitu Suwan- da terjun langsung ke dalam jenis kesenian yang sedang populer, hasil apresiasi terhadap berbagai jenis kesenian, terangsang oleh ragam gerak tari, serta karena terinspirasi lagu yang dibawakan oleh pesindén. Tepak kendang jaipongan bersumber dari berbagai jenis ke- tsenian seperti Ketuk Tilu, Topéng Banjét, Wayang Golék, Kiliningan, Bajidoran, Penca Silat dan Tarling. Kekayaan ragam tepak kendang Sunda digarap dengan konsep “kebebasan dan ‘ke- baruan’. Metode yang digunakan untuk menciptakan tepak kendang jaipongan adalah “ngo­ lah nu aya maké cara: salambar langsung saayana tinu heubeul, ‘janten ku nyalira’, ngarobah nu aya (‘ditambah’, ‘dikurangan’, ‘dipotong’, ‘dikerepan’, ‘dicarangan’)”. Kata kunci: Metode garap, Tepak Kendang Jaipongan Konsep dan Metode Garap dalamPenciptaan Tepak Kendang Jaipongan
Strength Analysis of Crusher Construction in Nyamplung Seed Peeling Machine Using the Finite Element Method Nandang Imam Santosa; Asep Dharmanto; Asep Saepudin; Wilarso
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.11757

Abstract

The nyamplung seed peeling machine uses a single roll crusher as its operating principle to automatically separate the nyamplung fruit's shell. One of the crucial parts of this apparatus that breaks down the nyamplung fruit shells is the crusher. The issue arises from the fact that the strength of the material utilized to construct the crusher is still unknown. This raises questions regarding how well the Nyamplung bean peeling machine crusher will function if it is used constantly. The purpose of this study is to identify the kind of material that works well for a nyamplung seed peeling machine crusher. An analysis will be conducted to ascertain the strength of the Nyamplung seed peeling machine crusher to follow up on this issue. The finite element method was used to conduct the testing. ASTM A36 and AISI 304 are the two materials that are compared in this analysis. In addition, it can be used to compare two different types of materials in terms of their strength, cost, and degree of safety. Following analysis for manual shaft calculations utilizing AISI 304 and ASTM A36 materials. With a yield strength of 250 N/mm², a safety factor of 9, a displacement of 0.022 mm, and von Mises stress readings of 29.044 N/mm² were achieved from the crusher simulation utilizing ASTM A36 material. Von Mises stress for the AISI 304 material was 28.471 N/mm², displacement was 0.023 mm, safety factor was 7, and yield strength was 206.804 N/mm².
Analisis Hadis-Hadis tentang Taat Kepada Pemimpin Implikasi dalam Kehidupan Bernegara Asep Saepudin
Jurnal Ilmu Sosial dan Humaniora Vol. 2 No. 2 (2024): April
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/isihumor.v2i2.678

Abstract

God commands man to fulfill what He commands and to stay away from what is forbidden. Among God's commandments is to listen to and obey leaders. Obedience to leaders is a religious command that has an impact on increasing the country's political stability. There are many hadiths that explain the obligation to obey a leader. However, many Muslims do not know and study these hadiths. So it is interesting for researchers to discuss it. By using literature research methods, as well as the use of approaches tailored to the main objectives of the research, researchers want to discuss it in more detail. The researcher also limits himself to the hadiths narrated by Bukhori and Muslims. The results of this research are: 1) Hadith About Obedience to Leaders Even If Your Back Is Beaten and Property Is Confiscated) Hadith About Obedience to Leaders in All Circumstances 3) Hadith Obedience to Leaders is Obedience to Allah 4) Hadith Fulfills Obligations That Become the Right of Leaders and Asks Allah for Our Rights That Are the Obligations of Leaders 5) Hadiths of Obedience to Leaders Except in Disobedience
PENINGKATAN PEMAHAMAN TEKNOLOGI ARTIFICIAL INTELLIGENCE (AI) BAGI SISWA SMP ISLAM AMUHAJIRIN PADURENAN 3 LEWAT EDUKASI INTERAKTIF Khurotul Aini; Ahmad Fahmi Abdillah; Hengky Agus Setiawan; Asep Saepudin; Pajar Priana; Rian Setiawan; Ray Virana Rajessa; Rahmat Pangestu; Daffa Nur Ardhayaguna; Ditto Saepoel Rachman; Agus Heri Yunial
APPA : Jurnal Pengabdian Kepada Masyarakat Vol 2 No 4 (2024): APPA : Jurnal Pengabdian kepada Masyarakat
Publisher : Shofanah Media Berkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Peningkatan pemahaman teknologi Artificial Intelligence di kalangan siswa SMP Islam Al-Muhajirin Padurenan 3 menjadi pokok permasalahan yang mendesak di era digital saat ini. Tujuan dari penelitian ini adalah untuk mengembangkan program edukasi interaktif yang dapat meningkatkan pemahaman siswa mengenai konsep dan aplikasi AI. Metode yang digunakan dalam penelitian ini adalah pendekatan kuantitatif dengan desain eksperimen, di mana siswa dibagi menjadi dua kelompok, yaitu kelompok eksperimen yang mengikuti program edukasi interaktif dan kelompok kontrol yang mengikuti pembelajaran konvensional. Hasil penelitian menunjukkan bahwa terdapat peningkatan signifikan dalam pemahaman siswa mengenai teknologi AI setelah mengikuti program edukasi interaktif, ditunjukkan dengan hasil pre-test dan post-test yang menunjukkan perbedaan nilai yang mencolok. Kesimpulan dari penelitian ini adalah bahwa edukasi interaktif efektif dalam meningkatkan pemahaman siswa tentang teknologi Artificial Intelligence, sehingga dapat menjadi alternatif metode pembelajaran yang menarik dan relevan untuk diterapkan di sekolah-sekolah, khususnya dalam mempersiapkan siswa menghadapi tantangan teknologi di masa depan. Program ini tidak hanya meningkatkan pengetahuan siswa tetapi juga membangkitkan minat mereka terhadap bidang teknologi, yang sangat penting untuk perkembangan karir mereka di era digital
Windshield Damage Analysis on ATR 42/72-600 Aircraft at PT. DEF Wilarso, Wilarso; Indra Gumilar; Hilman Sholih; Asep Saepudin
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 10 No 1 (2025): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v10i1.1750

Abstract

Windshield damage on ATR 42/72-600 aircraft at PT. DEF has caused operational disruptions, including flight delays, increased maintenance costs, and potential safety risks. Repeated damage to the Windshield is caused by various factors, namely inspection and maintenance errors, improper installation procedures, damage to the heating system or pressure distribution, glass material degradation, and exposure to extreme weather and UV rays. In this study, the analysis was carried out using a quantitative method with a fishbone diagram to identify the main causes of damage and appropriate mitigation steps. The results of the analysis showed that the main factors contributing to the damage were errors in inspection, installation errors, and material degradation. After implementing mitigation steps such as improving technician training, revising maintenance procedures, and improving material selection, there was a significant decrease in the frequency of Windshield damage. An indication of the success of these mitigation steps can be seen from the repairs carried out during January to June 2024 which succeeded in reducing damage and rejects on the Windshield by 40% compared to 2023, improving the quality of maintenance, inspection and material durability. In terms of maintenance costs for spare parts, there is a decrease in spending on purchasing spare windshields, namely USD 15,375 (PPG Inc.) x 10 units = USD 153,750 in 2023 to USD 21,915 (Saint Gobain) x 3 units = USD 65,745 in 2024 (June), which is 42% until mid-2024. This step increases operational reliability, cost efficiency, flight safety, and employee productivity, customer satisfaction also increases along with reduced flight delays and cancellations due to technical problems. Overall, the study succeeded in reducing Windshield damage and increasing the company's operational efficiency and reliability
Modification of Nyamplung Seed Peeling Machine Transmission Muhammad Ilham Alhabsyie; Wilarso; Awang Surya; Asep Saepudin; Aswin Domodite
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 9 No. 1 (2025): June 2025 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v9i1.14238

Abstract

Design of a nyamplung seed peeling machine with a 0.5 HP electric motor drive source with 1400 rpm rotation using a Ø76 mm pulley transmission system with a 1:1 ratio with a v-belt type A-24. After testing, it was found that from 100% of the nyamplung seeds there were seeds that were crushed and their contents were not processed, as many as 55% of the nyamplung seeds were found, apart from that when the machine was run there were seeds that were thrown out of the hopper so that the results of the machine design were deemed not to be as expected. To overcome this problem, it is necessary to modify the previous research machine so that the peeling process between the seeds and the nyamplung shell can improve the quality. The results of the modification of the nyamplung seed peeler tool were obtained with a duration of 13 seconds, the number of nyamplung seeds was 25 pcs, of which 17 were peeled. There were 5 pcs of whatever were not peeled, and 3 pcs were crushed. The second trial had a duration of 14 seconds, the number of seeds sampled was 25, 18 were peeled, the remaining 4 were not peeled and 3 were crushed. The third trial lasted 15 seconds out of a total of 25 pieces peeled, the result was 19 pieces peeled and the remaining 2 pieces failed, 4 pieces were destroyed
Design and Construction of Prototype of CNC Plasma Cutting Machine Simulator 3 Axis Based on Stepper Motor and Mach3 PC Software Asep Dharmanto; Nur Rofiq; Asep Saepudin; Aswin Domodite; Wilarso
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 9 No. 1 (2025): June 2025 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v9i1.14289

Abstract

In a workshop, the machining or cutting process of plates must be done quickly and accurately, while most of them are still done manually or by hand. One of the technologies used today is the CNC (Computerized Numerical Control) machine which is one of the results of the development of machining technology that can be operated automatically and continuously, so that it can support the need for requests for complex workpiece shapes, high accuracy and in large quantities. In its processing, this workpiece is very difficult to do with a manual process or with ordinary tools. To overcome this, a CNC plasma cutting machine design was made. CNC plasma cutting is a CNC machine whose motion system can move the plasma eye or torch according to computer commands. The design of this plasma cutting machine is carried out with a design process to determine the dimensions of the machine and calculations to determine the specifications of the drive motor, with the design of the electric wiring diagram and the selection of controller selection specifications for the system. By testing the precision of the tool during the experiment. The purpose of this design is to create a CNC plasma cutting machine with easily obtainable materials and capable of carrying out complex plate cutting work with high tool precision. This CNC plasma cutting machine uses 3-axis CNC as the main driver, namely the X axis, Y axis and Z axis, and is operated with Mach3 software as a CNC machine controller and uses a stepper motor to move the axis axis. Mach3 software was chosen because it has an easy configuration because there is an auto tuning feature in determining the precision of each axis and is easy to operate, and easy to get on the internet, so that with this CNC plasma cutting machine it can help a workshop in doing sheetmetal work efficiently and accurately which in the end can save material, time and cost of work