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All Journal Semesta Teknika Angkasa: Jurnal Ilmiah Bidang Teknologi KACANEGARA Jurnal Pengabdian pada Masyarakat Jurnal Pengabdian Dharma Laksana Jurnal Rekayasa Lingkungan Community Development Journal: Jurnal Pengabdian Masyarakat Vortex Jurnal Peradaban Masyarakat (JPM) Mestaka: Jurnal Pengabdian Kepada Masyarakat Kapuas Hikamatzu Journal of Multidisciplinary Research
Dedet Hermawan Setiabudi, Dedet Hermawan
Sekolah Tinggi Teknologi Adisutjipto Yogyakarta
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Analysis of the influence of groove welds of oxy-acetylene welding joints on tensile strength and microstructure on steel ST 37 Nugroho, Fajar; Muga, Yohanes Fernando Leo; Setiabudi, Dedet Hermawan; Sudarmanto, Sudarmanto
Vortex Vol 5, No 1 (2024)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v5i1.1955

Abstract

In this study, the authors conducted a study on the analysis of the effect of oxy-acetylene welding joints on tensile strength and microstructure in the HAZ and weld metal areas on st 37 steel plates. The results of this study indicate that the average value of the highest tensile strength value is at V groove weld with the average strength of the welded joint is 4.796 kgf/mm2. While the lowest tensile stress is on the I groove weld of 4.674 kgf/mm2. Meanwhile, from the microstructure test, it can be seen that in the HAZ area each groove. Microstructure in the HAZ area shows that the double V groove  weld types are fine ferrite, coarse pearlite and martensite. In type V groove  weld the structures formed are ferrite, coarse pearlite and martensite. In type I groove  weld the structures formed are ferrite, grain boundary ferrite and fine pearlite. Whereas in the weld metal area, and the results of the microstructure test of the weld area on the V seam, it shows a dense microstructure arrangement, the arrangement is identical to pearlite (dark color) so that the specimen is harder.
Pengolahan bioarang sebagai pengganti biogas dengan proses roasting pengolahan Kopi Arabica untuk mendukung ketahanan energi Santoso, Djarot Wahju; Sudarmanto, Sudarmanto; Husaini, Munawar; Mardwianta, Benedictus; Setiabudi, Dedet Hermawan; Subarjo, Abdul Haris
Vortex Vol 5, No 1 (2024)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v5i1.2011

Abstract

Pengolahan limbah biochar menjadi briket untuk dijadikan biogas dalam rangka mendukung proses pemanggangan pengolahan kopi arabika merupakan salah satu inovasi energi alternatif untuk mendukung ketahanan energi. Penelitian bertujuan untuk mengetahui pengaruh komposisi briket dengan campuran limbah kulit kopi dan debu kayu terhadap nilai kalor, kadar air, kadar abu, dan uji densitas. Metode yang digunakan adalah eksperimental. Pada komposisi II nilai densitasnya paling tinggi karena jumlah serbuk gergaji paling banyak. karena dengan perlakuan gaya tekan manual maka partikel arang akan mengalami kompresi sesuai dengan gaya tekan yang diberikan. Hasil penelitian komposisi I menghasilkan nilai kalor sebesar 5922 kal/gr, komposisi II menghasilkan nilai kalor sebesar 6072 kal/gr. Hasil pengujian kadar abu SNI 01-6235-2000 tentang briket arang, kadar abu yang diperbolehkan tidak melebihi 8%. Kadar abu yang dihasilkan pada komposisi I sesuai dengan standar yang ditentukan.
Peningkatan pengetahuan etika beserta standar operasional prosedur dalam bisnis dan strategi pemasaran UMKM Setiabudi, Dedet Hermawan; Subarjo, Abdul Haris
KACANEGARA Jurnal Pengabdian pada Masyarakat Vol 5, No 1 (2022): Januari
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/kacanegara.v5i1.1020

Abstract

This community service activity is a collaboration between academics and MSME entrepreneurs. The purpose of the activity is for MSME entrepreneurs, alumni of the Adisutjipto Aerospace Technology Institute to gain knowledge about ethics and codes of conduct, especially in terms of doing business. Besides discussing ethics and code of ethics, it also discusses standard operating procedures in managing business. It is hoped that the discussion of standard operating procedures can improve the quality of MSME products produced and can increase sales. The next discussion is about marketing strategies either through opening outlets/stores or by using social media and the internet. This community service activity uses a webinar because of the world situation due to the covid 19 health disaster. To find out the response of the webinar participants at the end of the activity, questions are asked with a questionnaire, from the results of the questionnaire with the question whether the activity is interesting there are 92% of participants answering interesting activities, 4% not interesting, 2% answered normal and 2% did not answer. participants in community service activities were also given questions about the answers of the speakers to questions from 94% of participants answered that the speakers gave good answers and 6% of participants answered that the speakers did not give good answers. In addition, a SWOT analysis was also carried out on partners in community service activities to obtain an overview of partners' strengths, weaknesses, opportunities and challenges.
Peningkatan Pengetahuan Manfaat HKI bagi UMKM Produk Pertanian di Banguntapan Kabupaten Bantul Kusumawardani, Mawar; Subarjo, Abdul Haris; Setiabudi, Dedet Hermawan; Ahmadi, Nurfi; Nugroho, Fajar; Santoso, Prasidananto Nur; Santoso, Djarot Wahju
Mestaka: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 6 (2025): Desember 2025
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/mestaka.v4i6.780

Abstract

Micro, Small, and Medium Enterprises (MSMEs) entrepreneurs still focus on trading and forget the potential side of intellectual property rights, this is due to ignorance, ego, or closed nature of business actors about new ideas and entrepreneurs feel quickly satisfied with their achievements. In product marketing communications, one of the functions of intellectual property rights is as a means for cultivating a positive image in the minds of consumers, so this needs to be understood by business actors, because the benefits of intellectual property rights for products are one of the important points so that MSME agricultural products are always remembered by the public or consumers who have tried the product for a period of time and have added value from the product. In this community service activity, a presentation was carried out, and to measure quantitatively the increase in knowledge, a pretest and posttest were conducted. The results of the increase in knowledge were an increase of 39% from the posttest results for community service participants.
Co-Authors abdul haris subarjo, abdul haris agustina setyaningrum, agustina Bambang Sudibya, Bambang Benedictus Mardwianta, Benedictus Djarot Wahju Santoso Dwi Aries Himawanto Eli Kumolosari FAJAR NUGROHO Freddy Kurniawan Hamdani, Taufik Husaini, Munawar Kusumawardani, Mawar Lasmadi, Lasmadi Mardiana Irawati Masduqi, Edi Muga, Yohanes Fernando Leo Muhrom Khudhori, Muhrom Nurcahyani Dewi Retnowati Nurfi Ahmadi, Nurfi Okto Dinaryanto Pinandhita, Lazuardy Rahendra Prihandoko, Diananto Santoso, Prasidananto Nur Sri Mulyani Sudarmanto Sudarmanto, Sudarmanto Sukamta Sukamta Teguh Wibowo Triwibowo, Nur Ahmad Warniningsih, Warniningsih