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Journal : Journal of Engineering and Applied Technology

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.
Design and Simulation of Carbon Steel-based Band Saw Frame Wibowo, Heri; Sutopo; Marwanto, Arif; Ahsanul Fakhr, Ardani; Riskiyanto, Aldy
Journal of Engineering and Applied Technology Vol. 6 No. 01 (2025): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v6i01.78951

Abstract

Frame design is an important factor in ensuring optimal performance of the band saw machine due to the dynamic loads that occur during the cutting process. This study discusses the design and simulation of a band saw machine with a focus on the analysis of the strength and stability of the machine frame using carbon steel with varying thicknesses, namely 1 mm, 2 mm, and 3 mm. Simulations were performed using finite element analysis (FEA)-based software to evaluate the stress, deformation, and safety factors of each variation of steel thickness. The simulation results show that material thickness has a significant effect on the frame's ability to withstand loads. Carbon steel with a thickness of 3 mm has the best structural performance in terms of stiffness and resistance to deformation, while steel with a thickness of 1 mm shows greater deformation at the same load. Thus, choosing the right thickness is very important to ensure the efficiency and durability of the band saw machine in industrial applications.
Co-Authors -, Hidayat . Sulastri Achmad Arifin Agung W. Ahmad Sidiq Ahsanul Fakhr, Ardani 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 Ani Retno Prijanti Anna Rozaliyani Antonius H. Pudjiadi Apri Budianto, Apri Ardani, Yanuar Ardhias Mahendra P. Aria Kekalih Ariyanto Ariyanto Arleni Bustami Aryono Hendarto Asysyifa, Nisrina 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 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 Fakhri, Ardani Ahsanul Fattah, Kemas Muhammad Abdul Ferry Sandra Findra Setianingrum Fredy Surahmanto Gantini, Ria Syafitri Evi Gede Wirya Kusuma Duarsa Gusti Khatimah, Nurul Hamdani Nurbahri Hayati, Taureni Hidayat - Hidayat, Entus Hikmat, Ujang Saeful Hutabarat, Hernayati I Wayan Agus Hariyanto Ida Parwati Ilman, M.Noer Indah Setiawati Irfan Wahyudi Iris Rengganis Irwansyah Irwansyah Joedo Prihartono Julian Jusman, Sri Widia Azraki Katarina, Matilda Khatimah, Nurul Gusti Kusmardi Kusmardi Kusmarinah Bramono Kwarta, Cytyta Putri Lesmana, Aditya Candra Liem, Isabella Kurna Liem, Isabella Kurnia Lio, Tiara Mayang Pratiwi Lisnawati Rachmadi M. Rafi Marcellus Simadibrata Marcellus Simadibrata Marcelly Widya Wardana Masyur, Muhtaruddin Mawardi, Prasetya Melani Anggraini Mohamad Sadikin Muhamad Hasan Sebyar Muhammad Fedryansyah, Muhammad Muhammad Noer Ilman Mujiyono Mujiyono Mujiyono Mujiyono Mulyadi M. Djer Murdani Abdullah Murni, Indah K. Najib Advani Neng T. Kartinah Novi H Nugraha, Ardi Maulana Nur Azizah Nur Irawati Nuraeni, Hanny Siti Nurbahri, Hamdani Nuri Dyah Indrasari Nurrahmah, Sheila Nurwati, R. Nunung Parhusip, Santi Sumihar Rumondang Piprim B. Yanuarso, Piprim B. Ponco Birowo Pradipta, Saraswati Primadhani, Suci Widya Primariadewi Rustamadji Priyo Tri Iswanto Putera, Raka Hilmi Syah Putri Damayanti Putri, Rizky Clarinta Rachim, Hadiyanto Abdul Raharja, Putu Angga Risky Rahmat Efendi Rani Wardani Hakim Ratnawati, Mamik Reza Y. Purwoko Ricardo, William Rio Yuri Aldino Ririn Probowati, Ririn Riski Amanda, Clara Riskiyanto, Aldy Risty Yasmin Bonita Riswan Dwi Djatmiko Rona Kartika Rozaliyan, Anna Rubiana Sukardi, Rubiana Sarwono, Sugeng J. Savitri, Monika Septiasari, Yeti setianingrum, suci Sidiq , Ahmad Soleha, Winna Sresta Azahra Suhendro Suhendro Sukamto Koesnoe Sulastri Sulastri Supanto, Muhammad Supriatna, Novianti Supriono , Untung Susanti, Dasmi Susanti, Dhama S. Susatyo, Jeffry Adijaya SUTOPO Suyatna, Fransiscus Dhyanagiri Syari, Lucky Novita Tahapary, Dicky L 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