Claim Missing Document
Check
Articles

Found 12 Documents
Search

PEMBINAAN MASYARAKAT DESA PLALANGAN PONOROGO DALAM PENGOLAHAN LIMBAH PETERNAKAN UNTUK MEWUJUDKAN LINGKUNGAN BERSIH Kuntang Winangun; Munaji Munaji; Bambang Wahrudin; Nanang Suffiadi Akhmad
JURNAL ABDIMAS DOSMA (JAD) Vol. 5 No. 1 (2026): JANUARI
Publisher : IKATAN ALUMNI DOSEN MAGANG KEMENRISTEKDIKTI TAHUN ANGKATAN 2017

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This community service program aims to increase the capacity of the Plalangan Village community, Jenangan District, Ponorogo Regency, to process livestock waste into useful products, specifically organic fertilizer. The main problems faced by partners are the low understanding and skills of waste management, as well as poor environmental sanitation due to the accumulation of livestock manure. The implementation method is carried out through a participatory approach in the form of socialization, technical training, and ongoing mentoring. The results show a significant increase in community knowledge and skills, as evidenced by the implementation of waste processing into solid and liquid organic fertilizer by the PemudaMu Farm partner group. This program also encourages environmental awareness and new economic opportunities based on the utilization of livestock waste. Thus, this community service activity contributes to improving community welfare while supporting sustainable development in the livestock sector.
The effect of heat input on defect formation, macrostructure, microstructure and hardness in AA 1100 aluminum weld joints using the GMAW process Rizki Dwi Ardika; Ilham Sulthoni; Munaji Munaji; Yoyok Winardi; Muizuddin Azka
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.8632

Abstract

AA 1100 aluminum is widely used in industrial applications due to its low density and good corrosion resistance; however, welding defects such as porosity and changes in mechanical properties often occur during Gas Metal Arc Welding (GMAW). One of the most influential parameters on weld quality is the welding current. This study analyzes the effect of welding current variations on the physical and mechanical properties of AA 1100 GMAW welded joints using ER 5356 filler wire. Welding was carried out at currents of 100 A, 130 A, and 160 A using argon shielding gas. The welded joints were evaluated by visual inspection, macrostructure observation, microstructure analysis, and Vickers microhardness testing. The test results showed that increasing the welding current resulted in wider weld beads, increased porosity and spatter defects, as well as coarser grain structures in the heat-affected zone (HAZ) and weld metal. The lowest porosity and spatter occurred at 100 A, while the highest porosity and spatter occurred at 160 A. This was due to excessive heat input and hydrogen trapping. Microstructural analysis revealed the presence of FeAl₃ intermetallic phases dispersed within the aluminum matrix. The highest hardness value was found in the weld metal region at 100 A, which was caused by the finer grain size and the strengthening effect of Mg from the ER 5356 filler. Overall, this study confirmed that the welding current significantly affects the defect formation, microstructural evolution, and hardness distribution of GMAW AA 1100 weld joints.