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All Journal Jurnal Teknologi dan Riset Terapan (JATRA) Majalah Ilmiah Gema Maritim ADMA: Jurnal Pengabdian dan Pemberdayaan Masyarakat IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) IRA Jurnal Pengabdian Kepada Masyarakat Tematik
Hermana, Rifki
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Aerospace Engineering Automotive Engineering Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Nursing Social Sciences Other

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Pendampingan Pelaksanaan Pembelajaran Berbasis Proyek (Teaching Factory) Di SMK N 1 Alian Kebumen Mukhtar, Agus; Hermana, Rifki; Burhanudin, Aan; Ma’mun, Hisyam
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 1 No 3 (2023): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v1i3.86

Abstract

Project-based learning is active learning that can encourage students to think more critically and creatively. The project-based learning process at SMK N 1 Alian Kebumen has been implemented by involving class X, XI and XII students to directly participate in teaching factory workshops to handle consumers. Students' filling out the tracer study form has experienced a significant increase of 100% after the mentoring process and the number of partner industries carrying out teaching industry activities has also increased by 100%.
PKM OPTIMALISASI LAHAN PEKARANGAN SEBAGAI LUMBUNG HIDUP PASCA COVID 19 DI RT. 08 RW. X KELURAHAN KEMBANGARUM KECAMATAN SEMARANG BARAT, KOTA SEMARANG Hermana, Rifki; Budirahardjo, Slamet; Wibowo, Setyoningsih
TEMATIK Vol. 2 No. 1 (2022): Januari
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/tmt.v2i1.4201

Abstract

Sebagian besar warga RT. 08 RW. X Kelurahan Kembangarum Kecamatan Semarang Barat Kota Semarang bermata pencaharian diluar rumah, mayoritas warga bekerja sebagai karyawan swasta dan pekerja buruh. Saat kondisi wilayah Semarang diberlakukannya PPKM (Pemberlakuan Pembatasan Kegiatan Masyarakat). Terutama di wilayah Semarang Barat termasuk zona merah, untuk mencegah semakin luasnya penyebaran maka wilayah tersebut di isolasi sehingga kondisi menjadi perhatian penuh bagi kelurahan setempat. Warga dihimbau untuk tidak banyak melakukan aktifitas diluar rumah. Dengan adanya pembatasan kegiatan diluar rumah maka kebutuhan pokokpun sangat terbatas pula untuk dapat terpenuhi. Hasil diskusi dengan warga, menemukan solusi kegiatan apa yang perlu dilakukan agar pada saat diberlakukannya PPKM warga tidak hanya berdiam diri dirumah. Solusi yang dihasilkan adalah PPKM versi warga RT. 08 yaitu Pengen Panen Kita Menanam. Kami tim pengabdian masyarakat melakukan pendampingan pemanfaatan lahan pekarangan sebagai solusi lumbung pangan bagi keluarga dengan bertanam sayuran, selain sayuran kami juga membudidayakan jahe merah, mengingat manfaat jahe merah yang sangat bagus bagi kesehatan sebagai penangkal covid-19 dan sebagai penguat imun dan karena harga jahe merah yang sangat mahal dan tidak terjangkau warga. Adapun edukasinya adalah menciptakan inovasi pemanfaatan lahan pekarangan di rumah masing-masing dengan sistem Vertikal Garden dan budidaya jahe merah menggunakan polybag/karung. Optimalisasi ini difokuskan pada edukasi tentang vertical garden, sehingga warga yang hanya mempunyai lahan sempit masih bisa menciptakan lumbung hidup sendiri dirumah. Edukasi meliputi pemilihan jenis tanaman yang akan ditanam dengan memperhatikan kebutuhan sinar matahari dan umur panen yang pendek. Kesimpulan warga semakin paham bahwa dengan pengoptimalkan lahan pekarangan dengan system vertical garden sangat menghemat lahan dengan hasil memuaskan. Warga sangat senang dengan hasilnya karena dapat memenuhi kebutuhan pangan sehari-hari. Selain bisa panen dilahan pekarangan sendiri, hasilnya juga organic, menyehatkan dan bergizi. Dengan berbudidaya jahe merah warga dapat menyediakan rempah secara mandiri untuk menjaga stamina dan sebagai penangkal covid-19. Pemahaman tentang pengoptimalah lahan pekarangan dan berbudidaya jahe merah, warga menjadi sadar bahwa lahan sempit bukan menjadi halangan warga untuk betah beraktifitas dirumah. Slogan PPKM (Pengen Panen Kita Menanam) bagi warga sangatlah tepat sekali.  Kata kunci: vertical garden, budidaya, jahe merah
Perancangan dan Analisis Performa 3D Printer Cartesian Setyoadi, Yuris; Hermana, Rifki; Hakim, Rahman; Riyadi, Achmad Didi; Widiastuti, Hanifah
Jurnal Teknologi dan Riset Terapan (JATRA) Vol. 5 No. 2 (2023): Jurnal Teknologi dan Riset Terapan (JATRA) - December 2023
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v5i2.5057

Abstract

3D printer technology offers the capability to print 3D objects with nearly perfect accuracy, making it a crucial tool in the industry for rapid prototyping. This study employs an experimental approach to design a Cartesian 3D Printer with a printing area of X-axis 150 mm, Y-axis 150 mm, and Z-axis 200 mm, and subsequently compares the printing accuracy with the Anycubic Mega Zero 3D printer, which has a printing area of X-axis 220 mm, Y-axis 220 mm, and Z-axis 250 mm. Both machines underwent testing by printing block specimens 10 times each. The printing results revealed several specimens that did not meet the specified tolerance limits. In the Cartesian 3D Printer, three dimensional measurements exceeded tolerance levels in specimens 7 and 8, specifically in length, width, and height dimensions. Meanwhile, in the Anycubic Mega Zero 3D Printer, five measurements exceeded tolerance limits in specimens 6, 8, and 9, with one width dimension and two length and height dimensions. From these findings, it can be concluded that the Cartesian 3D Printer demonstrates higher accuracy compared to the Anycubic Mega Zero 3D Printer.
Pengabdian PKM Program Perbaikan dan Edukasi Penggunaan Peralatan Audio Bagi Panti Asuhan Fachrudin Semarang Hadi Kunaryo, Bambang; Rahmawan, Afeef Kurnia; Winasis, Ganjar; Hermana, Rifki
IRA Jurnal Pengabdian Kepada Masyarakat (IRAJPKM) Vol 3 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajpkm.v3i2.275

Abstract

Audio equipment is an essential facility in educational institutions, including at Fachrudin Orphanage in Semarang, where it supports daily activities such as worship, learning, guidance, and social events. However, improper installation and operation have led to suboptimal audio output and equipment damage, such as a horn speaker failure caused by overpowering and incorrect cable connections. This Community Service Program (PKM) aimed to repair damaged audio equipment, improve installation, and educate users on proper operation. The methods included field surveys, damage identification, repair of equipment and wiring, and user training. The results showed that correcting the installation and providing technical education significantly improved sound quality and helped prevent further damage.
Analisis Kekuatan Hasil Printer 3D Dengan Filamen Acrylonitrile Butadiene Styrene (ABS) Berdasarkan Variasi Suhu Nosel dan Jenis Isian Ma'mun, Hisyam; Supriyanto, Joko; Khusnun Naufal, Gostsa; Burhanudin, Aan; Hermana, Rifki
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.247

Abstract

Technological advancements, including 3D printing, enable the creation of prototypes from digital designs using 3D printers. A popular method is Fused Deposition Modeling (FDM) with thermoplastic materials such as Acrylonitrile Butadiene Styrene (ABS), valued for its quality and affordability. In 3D printing, nozzle temperature and infill type influence the mechanical properties of printed objects. This study aims to determine the tensile strength of ABS with variations in nozzle temperature and infill type. Tensile test results show that a 230°C nozzle temperature produces higher yield strength for most infill types compared to 240°C. The 240°C setting tends to increase maximum tensile strength for grid and concentric infills, but not for gyroid and lines. The concentric infill type exhibited the highest elongation at both temperatures, indicating greater ductility compared to other infill types. These findings are expected to serve as a reference for optimizing printing parameters.
KAJI EKSPRIMENTAL PEMBANDINGAN KETELITIAN MESIN CNC MILLING DENGAN KONTROL SMC DAN MESIN CNC MILLING DENGAN KONTROL ESP32 WIFI Hermana, Rifki; Setyoadi, Yuris; Fahrur Aza , Muhammad
Majalah Ilmiah Gema Maritim Vol 24 No 2 (2022): Gema Maritim Vol 24 No 2 tahun 2022 tanggal 30 September 2022
Publisher : Politeknik Bumi Akpelni

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (555.937 KB) | DOI: 10.37612/gema-maritim.v24i2.299

Abstract

Computerized Numerical Control (CNC) is one of the developments of automatically operated machining technology that can support the need for the demand for a product that has a complex shape, high accuracy and can work on objects that cannot be done with conventional machinery. CNC Milling in the industry still has an expensive price, both the price of the hardware and software used to operate the CNC Milling machine. Therefore, CNC milling machines are only used in large industries while the middle and lower industries still use CNC milling machines. This makes medium-sized industries less competitive with large industries in production results, both in terms of speed efficiency and accuracy. then research was carried out in the form of CNC design and design that uses an ESP32 wifi-based Offline Controller as an application that supports the CNC machine work process. This research is an experiential review of comparing the accuracy of CNC milling machines with SMC controllers and CNC milling machines with ESP 32 wifi controllers. From the results of the tests carried out as many as 10 times the milling machining process using CNC with SMC control obtained three values that exceeded the tolerance limit, namely one each on the dimensions of length, width and height or depth. While the results of the milling process using a CNC milling machine with ESP32 wifi control obtained six values that exceeded the tolerance limit, namely two each on the dimensions of length, width and height or depth. So it can be concluded that CNC with SMC control is more accurate because the percentage of failures is less compared to CNC with ESP32 wifi control
Desain Logika Fuzzy untuk Penilaian Kualitas Air Sumur Berdasarkan Parameter Salinitas, pH, dan Kekeruhan Burhanuddin, Aan; Mukhtar, Agus; Hermana, Rifki; Amirudin, Muhammad; Malik, Muchamad; Androva , Althesa; Ma’mun , Hisyam; Fadillah , Mohammad; Prihantono , Ezze Zhain Zhiqqi; Ma'mum, Subkhan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.333

Abstract

This study develops an integrated fuzzy-logic-based assessment system to evaluate well water quality using pH, salinity (via TDS conversion), and turbidity. The research aims to develop an adaptive system capable of handling uncertainties in water quality parameters in real-time monitoring across Semarang's coastal areas. The methodology incorporates sensor performance validation, fuzzy input processing, rule-based inference, and defuzzification implemented through MATLAB R2021a. Experimental results demonstrate exceptional metrological performance, with sensor linearity achieving determination coefficients (R²) of 0.9995 for pH, 0.9998 for salinity, 0.9996 for temperature, and 0.9993 for turbidity. Statistical validation confirmed measurement precision, with root-mean-square errors (RMSEs) of 0.018 pH units, 0.023 ppt salinity, 0.14°C temperature, and 0.027 NTU turbidity. Field implementation across 6 sub-districts revealed that 83.3% of samples complied with pH quality standards, 60% met turbidity thresholds, while 33.3% of samples in Genuksari exhibited seawater intrusion indicators with salinity levels exceeding 0.5 ppt. The study conclusively demonstrates that the developed fuzzy logic system provides accurate, consistent water quality evaluation and presents a viable framework for smart water monitoring infrastructure in coastal urban environments, particularly for detecting saline intrusion and maintaining water security.
Transformasi UMKM Desa Doplang melalui Koperasi Digital, Produk Wellness, IoT Smart Watering, dan Branding Wisata Novita, Mega; Senowarsito, Senowarsito; Hermana, Rifki; Sutomo, Sutomo
ADMA : Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol. 6 No. 2 (2025): ADMA: Jurnal Pengabdian dan Pemberdayaan Mayarakat: In-Progress
Publisher : LPPM Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/adma.v6i2.5726

Abstract

Desa Doplang di Kabupaten Semarang memiliki potensi besar pada komoditas bunga sedap malam, namun pemanfaatannya selama ini terbatas pada produk hias dengan nilai ekonomi rendah. UMKM setempat menghadapi kendala inovasi produk, akses pasar, dan kelembagaan ekonomi yang lemah. Program pengabdian multi-tahun sebelumnya (2023–2024) telah menghasilkan pelatihan dasar dan diversifikasi produk awal, tetapi aspek keberlanjutan kelembagaan, penerapan teknologi hemat sumber daya, dan strategi branding desa wisata belum terwujud optimal. Artikel ini bertujuan mendeskripsikan transformasi UMKM Desa Doplang pada tahun 2025 sebagai puncak program pemberdayaan melalui penguatan koperasi digital, pengembangan produk wellness, dan inovasi IoT smart watering. Kegiatan dilaksanakan dengan pendekatan partisipatif melibatkan UMKM, PKK, Karang Taruna, Pokdarwis, dan BumDes, melalui tahapan sosialisasi, pelatihan, penerapan teknologi, pendampingan, dan evaluasi. Hasil kegiatan menunjukkan terbentuknya koperasi digital SIRATIH dengan anggota awal pelaku UMKM desa sebagai wadah distribusi dan transaksi kolektif, peluncuran tiga produk wellness baru (lilin aromaterapi, body butter, dan lulur) yang memperluas portofolio UMKM, serta implementasi prototipe IoT smart watering yang mampu mengurangi penggunaan air hingga sekitar 20% pada lahan uji coba. Selain itu, booklet promosi wisata Jendela Doplang diterbitkan untuk memperkuat citra desa sebagai destinasi wisata berbasis wellness. Program ini membuktikan bahwa integrasi kelembagaan digital, inovasi produk, dan penerapan teknologi tepat guna mampu memperkuat daya saing UMKM sekaligus mendorong keberlanjutan ekonomi lokal. Implikasi lebih luas dari program ini adalah perlunya dukungan lintas sektor untuk mempercepat sertifikasi produk dan replikasi model ke desa lain yang memiliki potensi serupa.
Co-Authors Aan Burhanudin Agus Mukhtar Amirudin, Muhammad Androva , Althesa Burhanuddin, Aan Fadillah , Mohammad Fahrur Aza , Muhammad Gostsa Khusnun Naufal, Gostsa Hadi Kunaryo, Bambang Hanifah Widiastuti Joko Supriyanto Ma'mum, Subkhan Ma'mun, Hisyam Ma’mun , Hisyam Ma’mun, Hisyam Mega Novita Muchamad Malik Prihantono , Ezze Zhain Zhiqqi Rahman Hakim Rahmawan, Afeef Kurnia Riyadi, Achmad Didi Setyoningsih Wibowo Slamet Budirahardjo Sutomo Sutomo Winasis, Ganjar Yuris Setyoadi