Technology Reports of Kansai University (ISSN: 04532198) is a monthly peer-reviewed and open-access international Journal. It was first built in 1959 and officially in 1975 till now by kansai university, japan. The journal covers all sort of engineering topic, mathematics and physics. Technology Reports of Kansai University (TRKU) was closed access journal until 2017. After that TRKU became open access journal. TRKU is a scopus indexed journal and directly run by faculty of engineering, kansai university.
Technology Reports of Kansai University (ISSN: 04532198) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are
in the following fields but not limited to:
Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery
Interventional Pulmonology
The alkaline-chloride solution based pretreatment process is an attempt to get cellulose from sago pulp fiber. The two stages of pretreatment carried out were 500 mesh sago fiber soaking in 15% ammonium hydroxide solution and hydrolysis in 4% chloric acid at a temperature of 95oC. During the pretreatment process, lignin and hemicellulose compounds were released with a percentage of 35% and 74% respectively. The pretreatment stage physically causes discoloration of sago pulp fiber. The acquisition of sago pulp fiber cellulose was strengthened by the appearance of typical peaks on IR absorption at wave number 1429.4 cm-1, 1322.4 cm-1, 1157.3 cm-1, 1110 cm-1, and 897 cm-1. The results of Scanning Electron Microscopy show that the cellulose obtained has a porous, rough and fibrous surface with irregular length and irregular fiber location. In addition, cellulose has a single phase with a crystal size of 15 nm
This paper reveals the different characteristics of stress distribution in center wing box, which is a primary structure of airplanes, using rivet joint and adhesive joint. The wing box model developed by Indonesian Aircraft Industry was simulated by commercial finite element analysis software. Bending load transferred from another set of wing structures was imposed on the model. The characteristics of Von Mises stress, maximum principal stress, and maximum shear stress distributions were investigated in the simulation. Those stress distributions in the wing box with different sets of joint between skin and stiffener, which are the rivet and the adhesion, were then compared under identical bending load conditions. The simulation results showed there is almost no stress concentration in the wing box skins in case of the adhesive joint is used. Furthermore, utilization of the adhesive joint decreases Von Mises stress values in the top skin up to 18%, bottom skin up to 34%, Z-type stiffeners up to 27%, and T-type stiffener up to 19% which can significantly reduce potential damage and failure of the wing box structures. This result shows the superiority of the adhesive to rivet joint in the subsystem component level, which can be a guideline in designing airplane joints and finding their appropriate adhesive materials
