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All Journal TEKNIK IPTEK The Journal of Engineering Rekayasa Mesin Jurnal Rekayasa Mesin Jurnal Kesehatan Vokasional Jurnal Teknik Mesin Indonesia Infotekmesin Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Mekanik Terapan KESANS : International Journal of Health and Science Jurnal Material Teknologi Proses: Warta Kemajuan Bidang Material Teknik Teknologi Proses Jurnal Pengabdian Vokasi
Benidiktus Tulung Prayoga
Departemen Teknik Mesin Sekolah Vokasi Universitas Gadjah Mada, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health

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Perancangan Checking Fixture Sebagai Alat Inspeksi Komponen Underwing Tank Enclosure Pada Pesawat Fixed-Wing Kusuma, Samuel Surya; Hendaryanto, Ignatius Aris; Prayoga, Benidiktus Tulung; Winarno, Agustinus
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.884

Abstract

The underwing tank enclosure is a component of fixed-wing aircraft that was originally manufactured by a Spanish aerospace company, so all the tools and references were not available to the Indonesian aerospace company, one of which is the inspection process tool. This study aims to design a checking fixture to meet requirements and support the production process of the underwing tank enclosure component, ensuring efficient and compliant inspection processes for the Indonesian aerospace company. The research utilized CAD software to design the checking fixture and CAE software to analyze the structural strength of the main fixture frame using the Finite Element Method (FEM). The results include a checking fixture design employing checking pins to validate the dimensional contours of the underwing tank enclosure against specified geometric specifications. Structural strength analysis revealed a maximum Von Mises stress of 1,1119 MPa, a maximum deformation of 0,0074696 mm, and a minimum safety factor of 211,34, while the checking plate deformation analysis shows that the longitudinal checking plate component only experiences a maximum deformation of 0,0010525 mm, confirming that the main structural frame of the checking fixture and checking plate components are safe for use. Keywords: Design, Checking fixture, Inspection, FEM.
Perancangan Chassis Rail Transfer Trolley dengan Kapasitas 970 kg Pramudita Januarki; Widia Setiawan; Benidiktus Tulung Prayoga; Agustinus Winarno
Jurnal Mekanik Terapan Vol 6 No 1 (2025): April 2025
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v6i1.6843

Abstract

Perubahan tata letak material secara manual dengan bantuan peralatan transpotasi rail tranfer traolley dalam industri manufaktur menciptakan pengurangan biaya produksi. Hal ini terjadi pada salah satu industri manufaktur di mana muncul kebutuhan kelancaran proses suplai komponen menuju robot welding station baru. Komponen yang harus disuplai bermassa sekitar 970 kg dengan dimensi berkisar 3440 mm × 955 mm × 180 mm. Jarak asal komponen menuju station hanya sekitar 18 m. Massa yang berat menjadi penghambat jika ditangani tenaga manusia sehingga  perlu dilakukan perancangan alat rail transfer trolley. Penelitian terdahulu sudah melakukan perhitungan elemen mesin rail transfer trolley namun belum ada yang mengkaji sasisnya secara mendalam. Peneletian ini merancang chassis rail transfer trolley dengan analisis perbandingan variasi bentuk penampang material SS400 menggunakan finite element analysis. Dengan berbagai bentuk penampang profil seperti hannel, I-section dan hollow rectangular. Analisis yang dilakukan bertujuan untuk mengetahui faktor keamanan dan penampang chassis yang paling kuat. Hasil penelitian menunjukkan ketiga variasi penampang chassis memenuhi safety factor minimum 4. Chassis berpenampang I-section memiliki nilai von mises stress terendah yaitu 24,61 MPa dengan nilai safety factor tertinggi yaitu 9,96. Data yang diperoleh dapat digunakan sebagai referensi dalam menentukan material untuk chassis rail transfer trolley.
Evaluasi Efisensi Riser Untuk Bentuk Riser Samping yang Berbeda Menggunakan Metode Simulasi Casting Bahari, Galuh; Tulung Prayoga, Benidiktus
Infotekmesin Vol 14 No 2 (2023): Infotekmesin: Juli, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i2.1930

Abstract

As the solidification reaches the hot spot area, no molten metal remains and shrinkage is formed. To anticipate the shrinkage, a riser is added to the casting system. An optimal riser design would produce free shrinkage components. One of the factors that affect riser efficiency is the riser shape. This study aims to find the most efficient side riser shape by using simulation software. The riser shape of tubes, tubes with a half sphere on top, hemispheres, conical tubes, tubes with an oval cross-section, and cubes are used in this experiment, with the volume of all risers kept constant. The most efficient shape of the riser is the tube. The tube riser produces a larger modulus. The tube riser generated directional solidification. The same pattern can be seen in the niyama criteria and solidification temperature, where the tube riser has a more continuous pattern compared to other riser shapes.
EVALUATION OF GEOMETRIC ERROR OF CUSTOMIZED CNC MILLING MACHINE TOOLS ACCORDING TO ISO 10791-7 Prayoga, Benidiktus Tulung; Hendaryanto, Ignatius Aris; Winarno, Agustinus
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1878

Abstract

Due to open technology, there exists an abundance of inexpensive information accessible for study. One such piece of information pertains to customization or do-it-yourself (DIY) CNC milling machines. However, customized milling machines often suffer from several limitations, including a lack of component dimension accuracy, inappropriate interaction between components, low rigidity, and control system problems, all of which can impact the cutting performance and accuracy of the workpieces. This study aimed to measure the extent of these impacts on the accuracy of the workpieces. The errors in customized CNC milling machines were identified using a ball-bar system and cutting tests conducted according to ISO standards. The results of this study concluded that improvements must be made to the interaction between machine components to reduce geometric errors to levels acceptable according to standards. This customized CNC milling shows promise for machining workpieces with an accuracy of ± 0.2 mm.
Aplikasi Alat Bantu Mesin Bubut untuk Pengerjaan Spinning Ridwan, Mohd; Darmanto, Seno; Prayoga, Benidiktus Tulung; Hadi, Syamsul
Jurnal Pengabdian Vokasi Vol 4, No 1 (2025): Juni 2025
Publisher : Sekolah Vokasi Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpv.2025.31114

Abstract

The potential, opportunities, and advantages of Banaran Village, Cepogo District, Boyolali should serve as capital and driving force in driving a people's economy based on local wisdom and national orientation. In addition to promoting the metal carving industry sector, other potentials and advantages of Banaran Village, Cepogo, Boyolali include highland agriculture, historical heritage, arts and culture, natural scenery, reservoirs/reservoirs, and service potential. The solutions implemented in this activity are principally based on the potential and constraints faced by partners, especially Tumang Village, Banaran, Cepogo District, Boyolali. The relatively large and labor-intensive potential of small and medium industries in Tumang will be encouraged to open themselves to the potential of the accompanying economy in addition to the main sector, namely copper carving products and the like, by implementing lathe-based spinning machines covering education, arts and culture, tourism, agriculture, and other superior economic products. In addition, these potentials, opportunities, and advantages will be encouraged with good management and governance patterns so that community movements can also stimulate the economic movements of the surrounding community
The Effect of Build Orientation on Liquid Absorption and Wear of 3D-Printed Denture Materials Ikhlas, Muhammad; Cahyono, Sukmaji Indro; Prayoga, Benidiktus Tulung; Dharmastiti, Rini; Arifvianto, Budi; Mahardika, Muslim
IPTEK The Journal of Engineering Vol. 11 No. 1 (2025)
Publisher : Pusat Publikasi Ilmiah, Institut Teknologi Sepuluh Nopember.

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

Abstract

Up till now, denture has been widely used for resolving dental problems, especially those due to attrition. The attrition of tooth enamel could lead to wear and lowering the functions of normal teeth. So far, denture is made conventionally by using heat curing method in a mold. However, the complex geometries of teeth and oral cavity has led to the use of the more advanced techniques, such as additive manufacturing. In this research, the denture material fabricated by using digital light processing (DLP) additive manufacturing was studied in term of their liquid absorption capability and wear behavior. The specimen was printed with three build orientations, namely 0°/180°, 90°/90°, and 45°/135°. These are the degree between printing direction against sliding direction. An immersion and wear test were carried out in artificial saliva liquid. The result showed the lowest weight gain and dimensional change in the specimens printed with 90°/90° and 45°/135°. Meanwhile, the specimens prepared with build orientation of 0°/180° or printed with layer parallel to sliding direction demonstrated the smallest value of wear factor, indicating a better wear resistance compared to the others. A visual examination of the worn surface indicated delamination, abrasion and cracking as the possible wear mechanisms of the printed denture materials.
Safety Maturity Level Improvement Program At PT XYZ A Mineral (Nickel) Mining Company In Central Sulawesi Reza, Faisal; Cahyono, Rochim Bakti; Prayoga, Benidiktus Tulung; Arrofiq, Muhammad
Jurnal KESANS : Kesehatan dan Sains Vol 5 No 7 (2026): KESANS: International Journal of Health and Science
Publisher : Rifa'Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/kesans.v5i7.627

Abstract

Introduction: The nickel mining industry has high operational risks, thus requiring a mature safety management system. Objective: This study aims to analyze the Safety Maturity Level (SML) in nickel mineral mining operations at PT XYZ based on the parameters in the Decree of the Director General of Mineral and Coal No. 10.K/MB.01/DJB.T/2023. This evaluation is important to identify standard deviations and formulate a program for continuous improvement of safety culture. Methods: This study uses a qualitative and quantitative research design (mixed methods) by assessing four main indicators: worker participation, unit leader responsibility, accident statistical analysis, and risk control efforts. The research instruments include an assessment rubric according to ESDM regulations, in-depth interviews, field observations, and Focus Group Discussions (FGD). Results and Discussion: PT XYZ achieved a total safety performance score of 0.65 out of 1.00, placing the company at the "Reactive" level. Safety is still regarded as an administrative formality rather than an internalized work culture. Conclusion: To advance toward the "Proactive" level, strategic programs are proposed, including optimization of the "SLAMET" digital application, Management Walk Thru, and Advanced Data Analytics for accident investigation
Co-Authors A.A. Ketut Agung Cahyawan W Aditya Bayu Pratama Agustinus Winarno Agustinus Winarno Aji, Angga Prasetio Albertus Deny Heri Setyawan Apriawan Nur Huda Aprilia Erryani Arfan Fadilah Ariani Pradhita Putri Bahari, Galuh Budi Arifvianto Budi Basuki Cahya Sutowo Cahyono, Rochim Bakti Dian Permata Sari Fadilah, Arfan faisal Reza Felixtianus Eko Wismo Winarto Fendy Rokhmanto Galih Senopati Galuh Bahari Handoko, Handoko Heribertus Dedy Kusuma Yulianto Ignatius Aris Hendaryanto Ika Kartika Isworo Djati Julita Hendrartini Kusuma, Samuel Surya Lasiyah, Sus Made Subekti Dwijaya Malau Daniel Panghihutan Margareta Rinastiti Mohd Ridwan Muhammad Arrofiq Muhammad Ikhlas Muslim Mahardika Pramudita Januarki Prihadianto, Braam Delfian Radhian Krisnaputra Rini Dharmastiti Seno Darmanto Sugiyanto Sugiyanto Sukidjo . Sukmaji Indro Cahyono, Sukmaji Indro Suyitno Suyitno Syamsul Hadi Widia Setiawan Winarno, Agustinus Yosephus Ardean Kurnianto Prayitno