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All Journal TEKNIK Rekayasa Mesin International Journal of Active Learning Mekanika: Majalah Ilmiah Mekanika SEMAR Abdi Masya
Bambang Kusharjanta
Jurusan Teknik Mesin Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Engineering Environmental Science Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences Other

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Increasing Competency 4C using The G-Suite Application for Education Legowo, Budi; Kusharjanta, Bambang; Sutomo, Artono Dwijo; Mulyadi, Mulyadi; Wahyuningsih, Daru
International Journal of Active Learning Vol 4, No 2 (2019): October 2019
Publisher : International Journal of Active Learning

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (312.178 KB) | DOI: 10.15294/ijal.v4i2.21073

Abstract

4C competencies (Communication, Collaboration, Critical Thinking and Problem Solving, Creativity and Innovation) is the learning achievement needed at this time. Learning in the Industrial Revolution 4.0 era provides an opportunity to increase 4C competencies without space and time limits, by utilizing information and communication technology. This study aims to use the G-Suite for Education as a substitution of learning models and or strategies to improve 4C competence in the Wawasan Pedagogi Course in the Physics Study Program of Mathematics and Natural Science Faculty of Sebelas Maret University. The research mechanism includes two strand cycles, namely learning with a student-centered learning (SCL) approach as follows: 1). Classical and 2). Online using G-Suite for Education. Reflections from the two research cycles show students could  follow both classical (face-to-face) and online learning strategies, in the delivery of material and or assessment of learning outcomes.
Pengaruh Kandungan Dan Ukuran Serbuk Genteng Sokka Terhadap Ketahanan Bakar Komposit Geopolimer Diharjo, Kuncoro; Kusharjanta, Bambang; P Tarigan, Roy Aries; Andhika, Albert Raga
Jurnal Rekayasa Mesin Vol 4, No 1 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.784 KB)

Abstract

The objective of this research is to investigate the effect of particle content and grain size of Sokka roof tile powder on the burning endurance of the composite of Sokka roof tile powder - ripoxy R-802.The materials used were a Sokka roof tile powder (SGS), ripoxy R-802 resin, MEKPO catalyst and P-EX promotor. The Sokka roof tile powder was generated from the rejected Sokka roof tile which was crushed into powder. The powder was sieved to result in three size variances, which were mesh 80 retained in mesh 100 (177μm-149μm), mesh 150 retained in mesh 200 (99μm-74μm), and breaking away from mesh 200 (≤74μm). Prior to getting mixed with the resin, SGS was heated in an oven for 45 minutes in the temperature of 105oC. Afterwards, the powder was mixed with ripoxy R-802 resin for 3 minutes. The variances of SGS content were determined to be 10%, 20%, 30% and 40% composition. Making composite was conducted by press mould. Fixed composites was given post curing treatment in the temperatures of 80oC for 120 minutes. The burning testing on the composite was conducted on the basis of the standard of ASTM D-635. The indicator of burning endurance was determined by the data of time of burning (TOB) and rate of burning (ROB). The TOB resulted from the time of ignition and the ROB resulted from the time of fire propagation time in the composite. The results of this research are as follows: (1) the addition of SGS can improve the burning endurance of the composite of SGS-ripoxy R-802 as indicated by the increase in the TOB but the decrease of ROB due to the addition of the content of SGS; (2) the small size of the particle of SGS can increase the burning endurance of the composite of SGS-ripoxy R-802 as signified by the increase in the TOB but the decrease in the ROB due to the small size of the particle of SGS which breaks away from mesh 200 (≤74μm).
WORKSHOP DIGITAL MARKETING UNTUK SANTRI PONDOK PESANTREN WIRAUSAHA Triyono; Raharjo, Wijang Wisnu; Diharjo, Kuncoro; Ariawan, Dody; Raharjo, Wahyu Purwo; Kusharjanta, Bambang; Nugroho, Arif Setyo
Abdi Masya Vol 5 No 2
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/abdimasya.v5i2.380

Abstract

Yayasan Usaha Umat Karanganyar (YUUK) adalah yayasan sosial dan pendidikan informal yang berlokasi di dusun Jongkang, Tasikmadu, Karanganyar. Yayasan ini mempunyai unit pendidikan informal yang diberi nama Pondok Pesantren Wirausaha. Pondok Pesantren ini hanya menampung 8 santri yang diutamakan dari keluarga tidak mampu dan putus sekolah. Materi kewirausahaan di Pondok Pesantren ini adalah desain grafis dan sablon kaos. Santri-santri dididik keterampilan tersebut dan tinggal di asrama selama 1 tahun tanpa dipungut biaya (gratis). Seperti namanya, santri di Pondok Wirausaha ini belajar teori dan praktek agar mampu mandiri berwirausaha dengan mengimplementasikan konsep teaching factory. Hasil pembelajaran praktek berupa kaos, MMT dan produk-produk sablon belum bisa terpasarkan dengan baik karena pemasarannya masih menggunakan cara-cara biasa. Untuk itu, santri pada Pondok Pesantren Wirausaha ini perlu dikenalkan pemasaran digital (digital marketing) melalui kegiatan workshop 5 hari dengan langkah-langkah sebagai berikut: (1) memberi pengertian konsep digital marketing, (2) memberi materi digital marketing dengan nara sumber yang berpengalaman dalam digial marketing, (3) pendampingan dalam pembuatan akun dan memasarkan produk melalui akun tersebut, (4) penetapan target capaian pemasaran 3 bulan dan evaluasi. Hasil workshop mampu meningkatkan sustainability (keberlangsungan) Pondok Pesantren karena dengan implementasi digital marketing, santri-santri bisa menjual hasil karya sablonnya ke ruang digital tanpa batas sehingga meningkatkan potensi penjualan yang lebih besar dan keuntungan finansial yang lebih besar. Dengan keuntungan finansial ini, Pondok Pesantren Wirausaha Yayasan Usaha Umat Karanganyar bisa tetap gratis dan bisa meningkatkan kapasitas santrinya sehingga semakin banyak pemuda-pemuda putus sekolah dan dari keluarga tidak mampu bisa menimba ilmu keterampilan dan kewirausahaan.
Improving Solvolysis Rate Via Under Glass-Transition Temperatures Quenching Followed by Roll Bending of Carbon Fiber Reinforced Polymer Composite Sukanto, Heru; Kusharjanta, Bambang; Kaavessina, Mujtahid
TEKNIK Vol 45, No 3 (2024): December 2024
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v45i3.59296

Abstract

Reusing carbon fiber once it has been used as reinforcement in composite structures involves a complex recycling technique. This recycling process requires a strategy to ensure the recycled carbon fiber meets technical standards. Among various recycling processes, the solvolysis technique yields carbon fiber with high purity. However, solvolysis is also the most time-consuming method. This study proposes using quenching and roll-bending pretreatments, which increase the contact surface area between the composite and the solvent solution for expediting the solvolysis process of carbon fiber reinforced polymer (CFRP) composite. Quenching was performed by heating the composite to 75°C, 100°C, and 125°C before immersing it in water at room temperature. Roll bending was designed based on the principle of three-point bending and aimed to induce a strain in the composite that exceeds the strain of the epoxy resin. Quenching at 75°C, followed by roll bending, resulted in a 21% increase in the surface area of the composite. This increased area improved the solvolysis efficiency of CFRP composites by up to 21% after four days of immersion in a mixture of acetone and acetic acid.
DEVELOPMENT OF A SPACE-EFFICIENT AND LIGHTWEIGHT STUDY TABLE FOR ISLAMIC BOARDING SCHOOL STUDENTS Raharjo, Wijang Wisnu; Diharjo, Kuncoro; Ariawan, Dody; Raharjo, Wahyu Purwo; Kusharjanta, Bambang; Triyono
Abdi Masya Vol 6 No 2
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/abdimasya.v6i2.571

Abstract

This study presents the design, fabrication, and evaluation of a space-efficient, lightweight, and foldable study table intended to enhance learning conditions in Islamic boarding school (pesantren) environments. The table was designed using Computer-Aided Design (CAD) software with a focus on ergonomic principles, particularly a recommended working height of 70 cm to support proper posture. The final product features a durable steel tube frame, a plywood tabletop, and a collapsible leg mechanism, enabling compact storage in limited dormitory spaces. The fabrication process included precision cutting, Shielded Metal Arc Welding (SMAW), and the application of rust-resistant enamel paint, resulting in a total weight of approximately 6.5 kg with a load capacity of 40 kg.To evaluate its effectiveness, five students participated in comparative study sessions using both the old and the new table under controlled conditions. Concentration duration, used as the primary performance indicator, increased from an average of 264 seconds with the old table to 359 seconds with the new one—an improvement of 95 seconds or 36.43%. This enhancement is attributed to improved ergonomic posture, structural stability, and positive psychological effects stemming from user involvement and aesthetic design. The foldable design also allows better space utilization in multifunctional boarding school rooms. Overall, the table demonstrates significant functional and educational benefits and offers a scalable, low-cost solution for learning environments in resource-constrained settings. Future improvements may include using lighter materials and integrating storage or seating features to further improve user experience and usability.
Effect of Adding Al2O3 on the Macrostructure of Friction Stir Welding Polypropylene Sheet Clara, Dinda; Miksik, Frantisek; Kusharjanta, Bambang; Triyono, Triyono; Putri, Aniddya Salsabila Kurnia
Mekanika: Majalah Ilmiah Mekanika Vol 22, No 1 (2023): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v22i1.63026

Abstract

In this study, an experimental investigation had been carried out to determine the effect of alumina (Al2O3) addition in joining Polypropylene. Polypropylene is a thermoplastic material used mostly as a non-metallic material. One of the joining methods that can be applied in Polypropylene is Friction Stir Welding (FSW). The use of Al2O3 as a filler was to modify the Polypropylene matrix's properties to improve the joint's quality. The Al2O3 powder with 99.9% purity was inserted along the Polypropylene plates in the groove. This research analyzed the role of adding Al2O3 and tool rotation speed concerning the joint's quality. The experiment was performed under different values of tool speed rotation (204 rpm, 356 rpm, 620 rpm, and 1140 rpm) and the presence or absence of the addition of alumina powder. Then, the joint's quality was visually observed by optical macroscopy at the top and cross-section view. From macroscopic observations, adding alumina could make the visual of the joint look better and result in minimum defects than the joint without alumina addition. Instead, the increasing tool speed rotation helped the distribution of alumina during the welding process.
Peningkatan Potensi Wisata dengan Pemasangan Outdoor Fitness sebagai Upaya Peningkatan Kesehatan Masyarakat di Desa Karangasem Kab. Sukoharjo Raharjo, Wijang Wisnu; Diharjo, Kuncoro; Ariawan, Dody; Raharjo, Wahyu Purwo; Kusharjanta, Bambang; Ubaidillah, U
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 12, No 1 (2023): Mei
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v12i1.45314

Abstract

Jumlah usia muda yang tinggi perlu diberikan pembinaan fisik dan mental agar menjadi sumber daya manusia yang berkualitas di masa mendatang. Warga berusia muda di desa yang sudah mendapat informasi secara mudah juga memerlukan sarana olah raga fitnes yang tidak jauh dari tempat tinggal mereka. Alat ini akan memberika kesempatan kepada para pemuda untuk membentuk kesegaran jasmaninya dan berinteraksi sosial. Konsep itu dituangkan dalam bentuka pengembangan taman dan alat fitness outdoor sebagai alat kesehatan/pembinaan fisik masyarakat. Alat fitness yang dipasang pada ruang terbuka dapat dimanfaatkan masyarakat untuk berolahraga dan berwisata di satu objek wisata yang sedang dikembangkan. Dengan adanya kegiatan ini diharapkan masyarakat secara tidak sadar mulai kembali bergerak secara fisik dan menyadari pentingnya berolahraga selain itu juga penyegaran jiwa melalui kegiatan wisata alam. Dengan naiknya minat berolahraga dan menekan tingkat kejenuhan diharapkan akan membentuk sumber daya manusia dengan kualitas fisik dan mental yang tinggi. Teknik Mesin, Fakultas Teknik, Universitas Sebelas Maret menghadirkan solusi dengan menyumbangkan alat out door fitness yang diharapkan dapat meningkatkan animo kehadiran masyarakat di area pariwisata Gunung Pegat. Alat yang dipasang berjenis self actuation dengan memanfaatkan beban badan sendiri. Alat ini melatih otot lengan dan perut karena kontraksi utama pada area tersebut. Setelah pemasangan alat tersebut, masyarakat antusias memanfaatkan alat – alat yang dipasang.Kata kunci :  Kesehatan; masyarakat;  olah raga;  out door; interaksi, sosial.
Co-Authors Albert Raga Andhika Arif Setyo Nugroho Artono Dwijo Sutomo Budi Legowo Clara, Dinda Daru Wahyuningsih Dody Ariawan Heru Sukanto Kuncoro Diharjo Miksik, Frantisek Mujtahid Kaavessina, Mujtahid Mulyadi Mulyadi Putri, Aniddya Salsabila Kurnia Roy Aries P Tarigan Triyono Triyono Triyono Ubaidillah, U Wahyu Purwo Raharjo Wijang Wisnu Raharjo