Vol. 1 No. 2 (2014)

SUMMARY. Basori, in his paper, analyzed the tensile strength of Bj 44 construction steel in the SMAW welding process with variations in welding current. This research aims to know the effect of current strength on tensile strength of Bj 44 construction steel in the SMAW welding process using a single V seam with E6013 electrode at DC+ polarity with currents of 100 A, 110 A, 120 A, and 130 A. Wulandari and Sriadi, in their paper, analyzed the effect of blade angle on fan performance in an axial low-speed wind tunnel. This research aims to examine the effect of blade angle on the performance of a low-speed wind tunnel axial fan using computational methods. Kholil, et al., in their paper, analyzed the effect of injecting misted water into the combustion chamber through the inlet to reduce the symptoms of knocking or detonation as well as symptoms that occur in the engine when water injection is carried out. Basori and Rudianto, in their paper, analyzed the frame construction of a pump testing tool using the CATIA V5 program. The purpose of this research is to determine the level of feasibility of the framework of the pump testing tool. Syaripuddin, et al., in their paper, analyzed the effect of the type of weld seam on the tensile strength of low alloy steel (ASTM A36) using SMAW welding. The purpose of this research was to determine the effect of the type of weld on the tensile strength of ASTM A36 Steel plate in SMAW welding using Single V and U seams with E7018 electrodes with a diameter of 3.2 mm at DC + polarity with currents of 100 A, 110 A, 120 A, and 130 A. Dwiyati and Kholil, in their paper, made briquettes using water hyacinth as raw materials and HDPE plastic waste which has a high calorific value. Apart from being alternative energy, this briquette is later expected to be an environmental solution for water hyacinth, a nuisance plant, and the problem of plastic waste that is difficult to biodegrade in nature. Rumendi and Hermawan, in their paper, analyzed the surface hardening and microstructure of AISI 1045 steel through the nitriding process using urea media. Nitridation aims to harden the steel surface to improve chemical and mechanical properties. Syaefudin, in his paper, designed a simple hydraulic-driven backhoe excavator.