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:
Cranes are designed for lifting, moving heavy loads in factories, workshops or in ports, they require a high level of safety and reliability. Therefore, ensuring durability is not enough for the calculations and design of the crane. This paper solves the optimal design problem of double girder overhead crane based on reliability. A crane model shall be built in double girder structure, closed rectangular box shape cross section, the rail trolley shall be considered to be a portable load in which a pendulum type load is suspended. We have built the oscillating differential equations, the force equation, the moment equation, and the deflated equation, from there, determined the maximum forces and moments placing on the beam. We used strength conditions to determine the cross-sectional area of the girders. The factors of safety fs = 1.5, fs = 2.0, and fs = 2.5 produces the result of As = 8156.52 mm2, As = 9410.94 mm2, and As = 10516.14 mm2 respectively. Then we used mathematical statistics to determine the cross-sectional area according to the reliability, the result is As = 8362.08 mm2 corresponding to the factor of safety fs = 1.58. The achieved results show that when calculated under durable conditions, the factor of safety is often selected based on the experience of the designer. Therefore, it is not possible to calculate the risks occurring during the long operation time of the crane, causing economic and human costs. In this study, we have overcome the disadvantages to ensure the reliability of the crane structure with the optimal size
Using the CR-39 detector the fission-track registration technique was employed for determination of the uranium (U) concentration for 10 tooth samples found at Karbala city in Iraq. Each sample was 1.5 mm thick and 0.5 g in weight. Measurement of the uranium concentration in the samples was made by employing the CR-39 track detector to follow fission tracks caused by bombarding uranium with thermal neutrons from the 241Am-Be source that has a flux of 5 ×103 n cm-2 s-1. Calculations of the concentration levels were made through comparison with standard samples. The outcomes demonstrated that the minimum uranium value is 0.038 ppm and the maximum uranium value is 0.078 ppm
