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All Journal Jurnal Penelitian Saintek INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni EKSAKTA: Journal of Sciences and Data Analysis SPEKTRUM INDUSTRI International Conference on Engineering and Technology Development (ICETD) Medical Journal of Indonesia Rekayasa Mesin Journal Industrial Servicess The Indonesian Biomedical Journal Molecular and Cellular Biomedical Sciences (MCBS) JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Seminar Nasional Teknologi Informasi Komunikasi dan Industri Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Respirologi Indonesia Jurnal Ilmu dan Teknologi Kesehatan Pharmaceutical Journal of Indonesia Majalah Patologi Indonesia Social, Humanities, and Educational Studies (SHEs): Conference Series Jurnal Ilmiah Teknik Industri Kumawula: Jurnal Pengabdian Kepada Masyarakat Health Information : Jurnal Penelitian jurnal Teknik Industri - Unisi Jurnal Rekayasa Industri (JRI) Indonesian Journal of Global Health research BioEksakta : Jurnal Ilmiah Biologi Unsoed REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Hubungan Tingkat Pengetahuan Petugas Pengelola Obat dengan Tingkat Ketersediaan Obat Di Puskesmas Kota Malang JOURNAL LA MEDIHEALTICO Journal of Engineering and Applied Technology Narra J Jurnal Perak Malahayati : Pengabdian Kepada Masyarakat Jurnal Rekayasa, Teknologi, dan Sains Jurnal Ilmiah Kesehatan (JIKA) The Indonesian Journal of Gastroenterology, Hepatology and Digestive Endoscopy Indonesian Journal of Applied and Industrial Sciences (ESA) Jurnal Pustaka Dianmas Jurnal Bakti Masyarakat Manajemen Jurnal Penelitian dan Pengabdian Kepada Masyarakat (JPPM) Proceedings Book of International Conference and Exhibition on The Indonesian Medical Education and Research Institute Jurnal Polimesin Jurnal Akuntansi Pajak dan Manajemen Folia Medica Indonesiana Journal of Applied Mechanical Engineering Innovation
Heri Wibowo
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Journal : journal of engineering and applied technology

 1 
Effect of cooling distance on DC-LSND treatment on weld defects and weld fractures of A-36 steel Heri Wibowo; Muhammad Noer Ilman; Priyo Tri Iswanto
Journal of Engineering and Applied Technology Vol 1, No 1 (2020): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v1i1.34597

Abstract

Control of weld defects and weld fractures in the welding construction should be done to provide the quality assurance of the welding products and to provide a positive assessment of construction to meet technical and economic requirements. The objective of this study is to investigate the effect of the cooling distance on DC-LSND (dynamic controlled low stress no distortion) treatment on weld defects and weld fractures to obtain the best characteristic of the treatment. In this research, DC-LSND treatment was performed by cooling the both sides near weld line applied in welding process. The cooling media used cryogenic liquid nitrogen sprayed by nozzle. The nozzle was placed at a various distance behind the weld torch. Weld defect was investigated by radiograph test. Tensile strength was tested by servo pulser machine and weld fracture was examined by macro structure and SEM. Results showed that the DC-LSND treatment with a cooling nozzle that is too close to the weld torch has the potential to cause weld imperfections. Porosity and initial welding defect lead to the decrease in the tensile strength of the weld metal and the brittle fracture based on the fracture shape. SEM fractography shows that DC-LSND treatment tends to increase the number of inclusions that have an effect on increasing hardness.
A Analysis of Tempering Treatment after Hardening on S45C steel Bogie Pin Materials in relation to Mechanical Strength Wibowo, Heri; Marwanto, Arif; Kusdiyarto, Prihatno; Prasetio, Mukhamad Andri
Journal of Engineering and Applied Technology Vol. 6 No. 02 (2025): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v6i02.90400

Abstract

S45C steel is a medium carbon steel used for railway bogie pins due to its high strength. However, this steel does not meet the minimum hardness standard for bogie pin products, requiring further processing. The specific objectives of this study are: a) to investigate the effect of tempering temperature variations on the mechanical properties of S45C steel, and b) to determine the optimal tempering temperature and time recommended for heat treatment of S45C steel. The research method applied was an experiment with hardening treatment at a temperature of 910°C for 20 minutes, followed by tempering treatment at temperatures of 175°C, 225°C, and 275°C for 20 minutes of air cooling. The testing process carried out included tensile strength testing, hardness testing, and microstructure testing. The results of this study showed that the test specimen with tempering treatment at a temperature of 175℃ was the best among the other test specimens because it was more suitable for industrial needs. This test specimen had a maximum stress value of 948.6 MPa, a maximum strain value of 7.76%, a Vickers hardness value of 358.06 VHN, and a microstructure consisting of ferrite and martensite phases, making the tempering process at a temperature of 175℃ almost close to the standards set by the company.
Co-Authors -, Hidayat . Sulastri Achmad Arifin Aditya Candra Lesmana Agung W. Ahmad Sidiq Akmala, Vaza Aldho Jaya P. Aldino, Rio Yuri Aldyth Gunanto P. Alghifari, Fajar Alida Roswita Harahap Amanatin, Elsa Lutmilarita Andari, Ni Nyoman Destri Andrian Riyadi Anggono, Rendi F. Anggraini, Meilani Anggraini, Melani Anggraini, Melani Ani Retno Prijanti Anna Rozaliyani Antonius H. Pudjiadi Ardani Ahsanul Fakhri Ardani, Yanuar Ardhias Mahendra P. Ardi Maulana Nugraha Aria Kekalih Ariyanto Ariyanto Arleni Bustami Aryono Hendarto Asysyifa, Nisrina Badranaya, Muhammad Imawan Bambang Heru Budianto Bima Lantip B. Clarinta Putri, Rizky Damayanti, Triya Dante Saksono Harbuwono Desi Yunita Dewi Sukmawati Dian R. Sawitri, Dian R. Dicky Levenus Tahapary Didik Nurhadiyanto Dilawar, Ismail Dimyati, Arzaq Guruh Dinda Zulwi Amalia Tifani E. Mudjaddid A. Siswanto Deddy N.W.Achadiono Hamzah Shatri Edy Purnomo Em Yunir, Em Emy Khikmawati Ernawati Evy Yunihastuti Fadhillah, Muhamad Rizqy Fattah, Kemas Muhammad Abdul Ferry Sandra Fredy Surahmanto Gantini, Ria Syafitri Evi Garda Kharisma Sidanta Gede Wirya Kusuma Duarsa Gusti Khatimah, Nurul Hadiyanto Abdul Rachim Hamdani Nurbahri Hanif Nur Hidayat Hayati, Taureni Hidayat - Hidayat, Entus Hikmat, Ujang Saeful Hutabarat, Hernayati I Wayan Agus Hariyanto Ida Parwati Ilman, M.Noer Indah Setiawati Indrasari, Nuri Dyah Irfan Wahyudi Iris Rengganis Irwansyah Irwansyah Joedo Prihartono Julian Katarina, Matilda Kemas Muhammat Abdul Fatah Khatimah, Nurul Gusti Kuncoro Adi, Rahmad Kusmardi Kusmarinah Bramono Kwarta, Cytyta Putri Liem, Isabella Kurna Liem, Isabella Kurnia Lisnawati Rachmadi M. Rafi Marcellus Simadibrata K Marcelly Widya Wardana Masyur, Muhtaruddin Mawardi, Prasetya Melani Anggraini Mohamad Sadikin Muhamad Hasan Sebyar Muhammad Fedryansyah, Muhammad Muhammad Luthfi Muhammad Noer Ilman Mujiyono Mujiyono Mujiyono Mujiyono Mulyadi M. Djer Mulyani, Ayu Murdani Abdullah Murni, Indah K. Najib Advani Neng T. Kartinah Novi H Nur Azizah Nur Irawati Nuraeni, Hanny Siti Nurbahri, Hamdani Nurrahmah, Sheila Nurwati, R. Nunung Parhusip, Santi Sumihar Rumondang Piprim B. Yanuarso, Piprim B. Ponco Birowo Pradipta, Saraswati Prasetio, Mukhamad Andri Prihatno Kusdiyarto Primadhani, Suci Widya Primariadewi Rustamadji Priyo Tri Iswanto Putera, Raka Hilmi Syah Putri Damayanti Putri, Rizky Clarinta Raharja, Putu Angga Risky Rani Wardani Hakim Ratnawati, Mamik Reza Y. Purwoko Ricardo, William Rike Kurniawan Rio Yuri Aldino Ririn Probowati, Ririn Riski Amanda, Clara Risty Yasmin Bonita Riswan Dwi Djatmiko Rona Kartika Rozaliyan, Anna Rubiana Sukardi, Rubiana Sarwono, Sugeng J. Savitri, Monika Setianingrum, Findra setianingrum, suci Sidiq , Ahmad Soleha, Winna Sresta Azahra Sri Widia A.Jusman Sri Yamtinah Suhendro Suhendro Sukamto Koesnoe Sukoarno, Sukarno Sulastri Sulastri Supanto, Muhammad Supriatna, Novianti Supriono , Untung Susanti, Dasmi Susanti, Dhama S. Susatyo, Jeffry Adijaya Suyatna, Fransiscus Dhyanagiri Syari, Lucky Novita Tiara Mayang Pratiwi Lio Tjhin Wiguna Triana, Novi Utomo, Yoga Wahyu Wahyu Gunawan Wahyu, Fransiska Wahyurini, Dyahati Wawaimuli Arozal Widodo Apriliyanto Wijaya, Rheza Paleva Windy Keumala Budianti Wresti Indriatmi B. Makes Yonita, Ariska Yusra Yusra