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All Journal Construction and Material Journal Jurnal Pengabdian Kepada Masyarakat Abdi Putra Jurnal Maritim Polimarin INCOME: Indonesian Journal of Community Service and Engagement SOROT: Jurnal Pengabdian Kepada Masyarakat
Purwanto
Politeknik Maritim Negeri Indonesia
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Indentifikasi Limbah Besi dan Pemanfaatannya Untuk Pembuatan Perahu Lambung Datar Arif Rakhman Suharso; Purwanto; Dhesi Wulansari; Noviarianto; Rifki Arya Wiguna
Jurnal Pengabdian Kepada Masyarakat Abdi Putra Vol 2 No 1 (2022): Januari 2022
Publisher : Universitas Nusa Putra & Persatuan Insinyur Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (905.851 KB) | DOI: 10.52005/abdiputra.v1i3.105

Abstract

Bidang usaha produktif yang dipilih dalam kegiatan pengabdian ini adalah bidang usaha pengolahan besi bekas untuk diidentifikasi sebagai bahan pembuatan kapal lambung datar. Selain dapat diandalkan untuk membangun kekuatan maritim Indonesia, Kapal Pelat Datar ini juga memiliki daya saing kuat dan biaya produksinya jauh lebih murah jika dibandingkan dengan kapal-kapal berbahan baku kayu maupun fiber. Kegiatan yang dilakukan oleh mitra usaha salah satunya adalah pemotongan plat kapal dan di tempat usaha juga terdapat perahu dengan lambung datar sehungga mendorong kami untuk melakukan identifikasi plat kapal. Permasalahan lain yang dihadapi mitra adalah minimnya pengetahuan mengenai pengolahan besi scrap tersebut menjadi material sesuai pesanan yang diinginkan dari industry. Permasalahan lainya yang juga dihadapi adalah kurangnya pengetahuan mengenai identifikasi plat besi sehingga proses identifikasi tidak sesuai yang menyebabkan kesalahan dalam penafsiran harga.. Kegiatan Pengabdian ini dilaksanakan di tempat usaha kecil limbah besi di desa gedanganak Ungaran Timur. Pengolahan besi bekas sangat potensial karena banyak industri baja yang menggunakan bahan skrap sebagai bahan dasarnya, baik pada industri mesin maupun industri logam. Besi bekasan penggunaan skrap karena bahan ini mudah didapat, memiliki nilai komparatif yang tinggi, memiliki komposisi kimia yang masih sangat memungkinkan untuk diolah lebih lanjut, serta dapat mengurangi permasalahan yang berkaitan dengan limbah logam.
Analisis Persepsi Mahasiswa Terhadap Pelaksanaan Pembelajaran Dalam Jaringan (Daring) Mata Kuliah Praktik Fisika Terapan Purwanto Purwanto; Arif Rakhman Suharso; Susanto
Jurnal Maritim Polimarin Vol. 8 No. 1 (2022)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.103 KB) | DOI: 10.52492/jmp.v8i1.52

Abstract

Vocational campuses are campuses where most of the learning is carried out through practice with the aim that students have more skills and competencies when working in industry. However, in the COVID-19 pandemic situation, all learning must be carried out online, both theoretical and practical courses. The purpose of this study was to determine the level of feasibility and success of the online learning of applied physics practicum courses at the Politeknik Maritim Negeri Indonesia through analysis of student perceptions with the provision that the perception index is positive if it has a percentage of >40%. The method used in this research is descriptive quantitative. The object of this research is students who take practical applied physics courses from the Nautika study program. The number of students who filled out the questionnaire was determined by using a purposive random sampling technique. The data was obtained through a googleform questionnaire and shared via whatsapp messages. The results of the study showed that the student perception index got a positive value with a feasibility percentage of 87% for the component of teaching and learning activities, 98% for the component of lecturer competence and 88% for the component of facilities and infrastructure.
Peningkatan Pengetahuan Masyarakat Tentang Pengelolaan dan Pemilahan Sampah di Kelurahan Karangjati Kecamatan Bargas Kabupaten Semarang Fitri Suprapti; Erwin Sutantyo; Ari Ani Dyah Setyoningrum; Evi Sirait; Purwanto
Jurnal Pengabdian Kepada Masyarakat Abdi Putra Vol 3 No 2 (2023): Mei 2023
Publisher : Universitas Nusa Putra & Persatuan Insinyur Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52005/abdiputra.v3i2.205

Abstract

This article discusses the management of household waste disposal and segregation in Karangjati Village, Bergas District, Semarang Regency. The background of this activity is that most of the people in this village work as factory workers, and they still have limitations in terms of waste management. Through Community Service this time it is hoped to be able to provide solutions to the problems faced by residents in Karangjati Village. The method for implementing this activity consists of (1) preparation, (2) implementation, and (3) evaluation with participants. The activity begins with the delivery of material with lectures, discussions, questions and answers about waste management and demonstrations about handling household waste such as food scraps and leaves for composting. The results of this community service activity show that the participants who took part in the activity from the beginning to the end of the activity have succeeded in increasing their understanding of waste management. This is indicated by the seriousness of the activity participants when doing waste sorting and composting practices.
OPTIMALISASI SIFAT MEKANIK SERAT ALAM DARI SERBUK KAYU ULIN MELALUI TEKNIK PENGERINGAN SEBAGAI PENGUAT MATERIAL BIOKOMPOSIT ANJUNGAN KAPAL Purwanto Purwanto; Erwin Sutantyo; Heri Kiswanto; Khoirotun Nafillah; Rifki Arya Wiguna; Arif Rakhman Suharso
Construction and Material Journal Vol. 5 No. 2 (2023): Construction and Material Journal Vol. 5 No. 2 Juli 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v5i2.5699

Abstract

Ironwood (eusideroxylon zwageri) is a type of wood that has great potential for industrial development. Currently, forest exploitation activities and the wood industry produce 30%-60% solid wood waste and have not been utilized optimally. One way to use it is to make composite materials. The purpose of this study was to determine the most optimal drying technique of ironwood powder, to provide information on the morphology, content and functional groups as well as the mechanical strength of the biocomposite with a volume fraction ratio. The ironwood powder samples in this study were characterized using the SEM-EDX, FTIR, and Vickers hardness tests. The results of the SEM test obtained information that the morphology of all samples had similarities, namely the surface was rough and the measured diameter of the sample ranged from 50-100 µm. While the EDX test obtained information that all samples had high carbon and oxygen content. The FTIR test results showed that ironwood powder had a cellulose content as evidenced by the absorption peaks and chemical bonds that were the same as pure cellulose. The results of the mechanical test on the biocomposite showed that sample C had the highest average HV value of 13.3 N/m2, while sample E had an average HV value of 12.26 N/m2 below the HV value of sample E. Meanwhile, sample A obtained the lowest hardness value with an average HV 5.93 N/m2.
Pengenalan Autonomous-Vessel untuk Siswa SMA 14 Semarang Melalui Kegiatan Webinar Heri Kiswanto; Ario Hendartono; Sri Tutie Rahayu; Purwanto Purwanto; Evie Sirait; Dhesi Wulan Sari; Prijo Harsono; Widar Bayu Wantoro
SOROT : Jurnal Pengabdian Kepada Masyarakat Vol 2 No 2 (2023): Juli
Publisher : Fakultas Teknik dan Ilmu Komputer (FASTIKOM) UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/sorot.v2i2.5188

Abstract

Pengenalan teknologi otonom (autonomous technology) telah membawa dampak besar dalam berbagai bidang, termasuk industri perkapalan. Dalam hal ini, kegiatan pengabdian masyarakat ini bertujuan untuk menyelenggarakan kegiatan edukasi tentang konsep dan manfaat kapal otonom kepada siswa-siswa SMA 14 Semarang. Kegiatan ini dilakukan dalam bentuk webinar yang menghadirkan tenaga ahli seperti dosen dan atau praktisi di bidang kapal otonom (autonomous vessel) otonom sebagai pembicara. Peserta diberikan kesempatan untuk memperoleh pemahaman yang lebih baik tentang teknologi otonom (autonomous technology) dan mengajukan pertanyaan terkait topik ini. Hasil dari kegiatan ini diharapkan dapat mempersiapkan siswa untuk menghadapi masa depan yang semakin terhubung dengan teknologi.
Edukasi Pengelolaan Sampah Non Organik Dengan Metode 3R (Reduce, Reuse, Recycle) Bagi Masyarakat Dusun Ngobo Purwanto Purwanto; Ari Ani Dyah Setyoningrum; Evi Sirait; Kirtyana Nindita; Hero Budi Santoso; Alimatussa’diyah Alimatussa’diyah
INCOME: Indonesian Journal of Community Service and Engagement Vol 3 No 2 (2024)
Publisher : EDUPEDIA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56855/income.v3i2.1007

Abstract

Garbage is a severe problem for the community. The waste management that has yet to be carried out optimally is very evident in the community, especially in Ngobo Hamlet, Wringinputih, which is located in Burgas District, Semarang Regency. Residents need to understand waste management thoroughly. It is necessary to educate the community about non-organic waste management with the 3R method (Reduce, reuse, recycle). The purpose of this service activity is for the community to be able to learn about waste problems and the adverse effects of waste, know about the waste selection process, and be able to reduce, reuse, and recycle non-organic waste. The stages in this activity include a literature review, obtaining activity permits coordinated with the cadres of residents of Ngobo Hamlet, planning needs, counseling on waste sorting and handling with the 3R method, and utilizing business opportunities with their potential. This community service program is able to increase community understanding about handling non-organic waste with the 3R method.The reduction method is to reduce the use of excessive materials and energy. Meanwhile, reuse by reusing existing items. While recycling is recycling used goods. In the recycling method, the community is given examples of how to recycle used goods into new goods that have economic value. One example of recycled goods is used gallons, which are recycled into flower vases and trash cans. The changes after this service activity are expected to change community behavior in handling non-organic waste for the better.
Co-Authors Alimatussa’diyah Alimatussa’diyah Arif Rakhman Suharso Ario Hendartono Dhesi Wulan Sari Erwin Sutantyo Evi Sirait Evie Sirait Fitri Suprapti Heri Kiswanto Hero Budi Santoso Khoirotun Nafillah Kirtyana Nindita Noviarianto, Noviarianto Prijo Harsono Rifki Arya Wiguna Setyoningrum, Ari Ani Dyah Sri Tutie Rahayu Susanto Susanto Widar Bayu Wantoro