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All Journal Rekayasa Mesin Media Mesin: Majalah Teknik Mesin Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Jurnal Teknik Mesin Indonesia Madani : Indonesian Journal of Civil Society Applied Research and Smart Technology (ARSTech) JTTM: Jurnal Terapan Teknik Mesin Jurnal Pengabdian Masyarakat Indonesia Abdi Masya Mechanical Engineering for Society and Industry Automotive Experiences Creative Research in Engineering (CERIE) Jurnal Suara Pengabdian 45 Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri Prosiding University Research Colloquium Jurnal Keilmuan dan Keislaman
Tri Widodo Besar Riyadi
Universitas Muhammadiyah Surakarta
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Studi Pengaruh Perlakuan Panas terhadap Struktur Mikro dan Sifat Mekanis Baja SKD-11 yang Digunakan pada Komponenstud Pin Winder Aji, Rizki Bimo; Riyadi, Tri Widodo Besar; Purboputro, Pramuko Ilmu
Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri 2024: Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Industri pembuatan benang, garmen dan tekstil di indonesia banyak menggunakan mesin-mesin pemintal benang buatan luar negeri. Sehingga bila ada kerusakan harus mendatangkankomponen-komponen mesin dari negara asal pembuat dan membutuhkan waktu yang lama dalam pengadaan barang serta menanggung biaya yang tinggi pula. Oleh karena itu industri dalam negeri membutuhkan ketersedian komponen tersebut, agar dalam proses perbaikan dan perawatan dapat dilakukan dengan cepat dan menekan biaya produksi. Pada penelitian ini dilakukan karakterisasi material baja SKD-11 melalui proses perlakuan panas dengan cara normalizing dan tempering. Dalam penelitian ini dilaksanakan dengan cara memanaskan material hingga temperatur austenit 1000⁰C dengan waktu penahanan 2 jam dan didinginkan di udara terbuka. Kemudian dilakukan tempering dengan variasi temperatur 200⁰C, 300⁰C, 500⁰C, 550⁰C, 600⁰C dengan waktu penahanan 1 jam. Kemudian dilakukan pengujian kekerasan, impak (ketangguhan), dan struktur mikro. Hasil dari pengujian menunjukkan nilai kekerasan tertinggi ada pada sampel baja SKD 11 dengan proses anneling yaitu sebesar 75,4 HRC dan terendah ada pada sampel baja SKD 11 dengan variasi temperatur tempering 550⁰C sebesar 50 HRC, serta baja SKD 11 yang tidak mengalami proses perlakuan panas sebesar 36,19 HRC. Pada uji impact nilai ketangguhan stud pin original sebesar 1,76 J/mm2, nilai ketangguhan tertinggi pada sampel material baja SKD 11 tanpa melalui proses perlakuan panas yaitu sebesar 0,14 J/mm2dan nilai ketangguhan terendah ada pada sampel material baja SKD 11 dengan variasi temperatur tempering 550⁰C sebesar 0,05 J/mm2. Berdasarkan studi lapangan bahwa stud pin patah karena gaya impact, maka baja SKD 11 tidak bisa menggantikan stud pin original.
The Effect of Reactant Compositions on The Microstructure of Ceramic Materials Formed by Combustion Synthesis Riza, Ramzul Irham; Riyadi, Tri Widodo Besar; Wijianto, W
Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri 2024: Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri
Publisher : Universitas Muhammadiyah Surakarta

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Ceramics have been attractive as advance materials for high temperature applications due to their advantages such as high modulus, high hardness, high melting temperature, and high corrosion resistance. Of a broad range of ceramics, titanium carbide and aluminide have developed into one of the most interesting ceramics since they have high strength and good wear resistance at elevated ceramic materials. Producing TiC-Al2O3 from economical material (TiO2) is less expensive than that from their elemental powders. The combustion synthesis (CS) process offers significant advantages to fabricate TiC-Al2O3 since it produces high exothermic reaction and takes a short processing time. The objective of this study was to explore the combustion synthesis of TiC-Al2O3 and investigate the effect of reactant compositions on the combustion process and microstructure of synthesized products. The combustion synthesis was carried out in a combustion chamber with an atmospheric condition. The ignition technique to initiate the CS was performed using an arc flame. The microstructure and mechanical properties of synthesized products were observed. The result of this research would benefit for producing a high performance ceramic material obtained from economical material with an efficient process.
ELEKTROPLATING Ni/Cu PADA BAJA KARBON Riyadi, Tri Widodo Besar
Prosiding University Research Colloquium Proceeding of The 8th University Research Colloquium 2018: Bidang Teknik dan Rekayasa & Bidang Tekni
Publisher : Konsorsium Lembaga Penelitian dan Pengabdian kepada Masyarakat Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

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Abstract

Nikel-tembaga (Ni/Cu) merupakan kandidat bahan lapisan logam yang potensial untuk aplikasi di bidang pipa penukar panas, bejana tekan, instalasi kapal laut, pelindung oksidasi barang elektronik, dan bahan komponen magnet karena mempunyai sifat yang tahan korosi, sifat magnetik yang unik, kekuatan tarik dan keuletan yang cukup tinggi. Pelapisan logam dengan teknik elektroplating cukup menarik karena proses yang murah dan sederhana. Penelitian ini bertujuan untuk mengetahui pengaruh tegangan listrik pada pelapisan Ni/Cu terhadap ketebalan lapisan, kekerasan, dan ketahanan aus permukaan produk. Penelitian dilakukan dengan menggunakan baja karbon ST-40 sebagai logam induk, larutan nikel dan larutan Cu. Proses elektroplating Ni dilakukan dengan tegangan konstan 2.3 volt dan waktu celup konstan 30 menit. Proses elektroplating Cu dilakukan dengan variasi tegangan 1.3, 1.8, 2.3, 2.8, dan 3.3 Volt dengan waktu celup konstan 30 menit. Karakterisasi ketebalan lapisan dilakukan dengan optical microscope, pengujian kekerasan dilakukan dengan alat mikro Vickers, dan pengujian keausan menggunakan alat uji keausan type ogoshi testing machine. Hasil pengukuran permukaan menunjukan bahwa dengan kenaikan tegangan listrik dari 1.3 Volt sampai 3.3 Volt menyebabkan kenaikan ketebalan lapisan Cu dari 28.7 ?m sampai 36.4 ?m, kenaikan kekerasan lapisan Cu dari 125.13 HV sampai 137.03 HV, kenaikan penurunan dari 7.62 x 10-6 mm2/kg sampai 2.26 x 10-6 mm2/kg.
Sosialisasi Pengolahan Limbah Organik Rumah Tangga Melalui Budidaya Magot di Desa Pandeyan, Kecamatan Grogol, Kabupaten Sukoharjo Tri Atmoko, Nugroho; Suryono, Edy; Besar Riyadi, Tri Widodo; Teofilus Riyadi, Natanael; Awan, Sang Alang; Wicaksono, Bagas; Yuniarta, Fajar; Bagus Nugroho, Taufik; Putra Tegar Permata, Septian
Jurnal Suara Pengabdian 45 Vol. 2 No. 3 (2023): September: Jurnal Suara Pengabdian 45
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/pengabdian45.v2i3.1059

Abstract

Organic waste is an environmental problem, especially in the villages of Pandeyan, Grogol, Sukoharjo, so there is a need to solve this problem through direct community activities. One solution is the socialization activity on organic waste processing through magot cultivation in Pandeyan village. With this socialization, it is hoped that the community will gain further understanding regarding magot cultivation as an effort to process household organic waste to make it more useful. The socialization activity was conducted at the Pandeyan village office on August 30, 2023. To measure the success of socializing organic waste processing through magot cultivation, an evaluation was carried out using a questionnaire method distributed to participants. From the questionnaire results, it was found that 88.9% of the total participants understood magot cultivation. Meanwhile, if you look at the potential of organic waste in each household participating in this socialization, it is possible to process it through magot cultivation. However, there is still a need for assistance and further understanding regarding magot cultivation because there is still a stigma that maggots have a maggot-like shape and are not suitable for cultivation.
ANALISIS PERUBAHAN BENTUK CHASIS TERHADAP BEBAN SEBAGAI DASAR PERANCANGAN MESIN BENDING HIDRAULIC Makinun, Makinun; Anggono, Agus Dwi; Riyadi, Tri Widodo Besar
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1841

Abstract

In the world of the automotive industry there are still several problems that must be resolved, such as what happened in one of the workshops, there was a shortage of tools to repair bent truck frames because of the accident. One of the tools needed to repair the frame is the bending tool, with this the planning process for making the tool has a problem with the ability of the hydraulic tool to be used to repair the frame of the Mitsubishi Center 125. With the simulation method using SolidWorks software, it can be seen that the force load on the frame of the Mitsubishi center 125 will then obtain data that can be analyzed using the finite element method. In the simulation, try to use a force load of 1 ton.f to 20 ton.f at two points, namely the center and side, then can be seen that the displacement of the object that occurs. The results of the simulation are increasing the force load, the degree of change in shape is increasing along with the damage to the object and the highest change of 500 mm so it requires the ability of hydraulic tools that have a compressive capacity of more than 20 tons.
Peningkatan Kapasitas Produksi Bata Merah Melalui Penggunaan Mesin Cetak Bata Merah Model Extruder Sahidin, Dwi; Tri Atmoko, Nugroho; Purwaningsih, Septi; Riyadi, Tri Widodo Besar; Margono, Margono; Ayuningtyas, Early Yanuar; Yuliana, Refly
Madani : Indonesian Journal of Civil Society Vol. 8 No. 1 (2026): Madani : Februari 2026
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/vbgmf126

Abstract

 This Community Service Program aims to enhance the production capacity of red bricks at UMKM Putra Mandiri, located in Mulyadadi Village, Cipari District, Cilacap Regency, through the implementation of a red brick extruder machine. The partner’s main issue was the manual production process, which limited production capacity and resulted in inconsistent brick quality. The program activities included field observations, partner discussions, training sessions, and mentoring on machine operation and maintenance. The results showed that using the extruder machine significantly increased production capacity from 100 pcs/hour to 750 pcs/hour, indicating a 750% improvement compared to manual methods. Furthermore, the  produced bricks demonstrated better uniformity, density, and strength, while reducing production time and labor intensity. The adoption of this appropriate technology not only improved productivity and competitiveness but also strengthened the partner’s independence in business operations. The implication of this activity is that technological transfer through community service programs can provide sustainable impacts on local economic development by promoting innovation, efficiency, and self-reliance among small enterprises. 
Ballistic performance of a composite armor reinforced by alumina balls with various matrix materials: A numerical study Agustinus Andrie Prasetyo; Aditya Praba Wijaya; Desi Gustiani; Akida Mulyaningtyas; Tri Widodo Besar Riyadi
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.13314

Abstract

This study observed the ballistic performance of the composite armor reinforced by an alumina ball with various matrix materials. The investigation was conducted numerically to establish an effective design of the composite armor for protection against a 7.62 mm bullet impacting at 800 m/s speed. Al 5083, Ti-6Al-4V, Weldox 700E, and Q235 steel, along with ceramic balls acting as reinforcement, make up the composite. The simulation was set in a 3D model and performed using Abaqus finite element software. The outputs of the simulation present the residual velocity, the depth of penetration, the optimized weight-to-penetration depth ratio, and the deformation pattern. The results indicated that the composite armor with ceramic ball reinforcement produced the optimum design using a matrix of Ti-6Al-4V. The matrix with a higher Young modulus has a higher velocity decrease. The matrix with a higher plastic equivalent strength has a higher resistance to the projectile deformation, marked by mushrooming during its penetration. On the contrary, the matrix with a lower plastic equivalent strength forms a ductile hole. This work guides to determination of the optimal design of composite armor containing ceramic balls as reinforcement, considering the different matrix materials.
Co-Authors Aditya Praba Wijaya Agung Setyo Darmawan Agung Supriyanto, Agung Agus Dwi Anggono Agus Jamaldi Agustinus Andrie Prasetyo Aji, Lastono Aji, Rizki Bimo Akhmad Arif Wahyudi Akida Mulyaningtyas Al-Mu’tashim, Mas'ud Fajar Alfian Safaat Amarulloh Amarulloh Aris Aryanto Aris Aryanto Atmoko, Nugroho Tri Aulia, Safira Riyand Awan, Sang Alang Ayuningtyas, Early Yanuar Bagas Wicaksono Bagas Wicaksono, Bagas Bagus Nugroho, Taufik Bagus Radiant Utomo Bambang Waluyo Febriantoko BIbit Sugito Binyamin, B Budi Hastomo Budi Hastomo, Budi Burhanudin Burhanudin David Setiadhi David Setiadhi Deni Andriyansyah Denis Marchant Desi Gustiani Dwi Sahidin Fadillah, Tri Difa' Fajar Yuniarta Fatuloh , Sopyan Sahid Haikal Hanifah, Panji Ardian Estu HERMAWAN Irfan Isdhianto Jamaldi, Agus Makinun, Makinun Margono Margono Masyrukan, M Mohamad Fatchul Nafis Muhammad, Rouf Mulyaningtyas, Akida Nafis, Mohamad Fatchul Natanael Teofilus Riyadi Nurfaiz, Muhammad Daim Patna Partono Pramuko Ilmu Purboputro Prasetya, Hardika Pratama, Divanda Putra Putra Tegar Permata, Septian Riza, Ramzul Irham S, Waluyo Adi Safaat, Alfian Safi'i, Muhamad Sang Alang Awan Saputra, Willy Arya Savidaprima, Albert Yunatan Septi Purwaningsih, Septi Septian Putra Tegar Permata Suryono, Edy Taufik Bagus Nugroho Teofilus Riyadi, Natanael Veriawan, Ipung Wahyudi, Akhmad Arif Waluyo Adi S Wicaksono, Muh. Tsaqila Wicaksono, Naufal Latif Wigo Ardi Winarko Wijianto, W Xiaomeng Zhu Yuke Hary Laksono Yuliana, Refly Yuniarta, Fajar Zahra, Dita Aulia Az Zarkhasy, Mafthukh Rifqi