In this study, Aluminium 1100-H12 with 1 mm thick was welded using pin-less friction stir spot welding (PFSSW) and then tested via tensional shear test to determine the tensile shear load (TSL) characteristics of its ...
In this study, Aluminium 1100-H12 with 1 mm thick was welded using pin-less friction stir spot welding (PFSSW) and then tested via tensional shear test to determine the tensile shear load (TSL) characteristics of its welds. The results obtained revealed that the tensile shear load of the welds was influenced by the parameter variations among revolving speed, depth of tool, and residence time. The clout of 1400 rpm revolving speed showed good properties with the highest value of TSL about 53 MPa at a depth of tool of 0.4 mm and at 9s of residence time. The middle value of TSL was confirmed at about 35 MPa through 990 rpm of revolving speed, 0.3 mm depth of tool, and 5s of residence time. Furthermore, the lowest property of TSL was found at 775 rpm of revolving speed, at 0.2 mm depth of tool, and at 9s of residence time. The results showed the influence of the depth of the tool has significant clout on the tensile shear load, especially at 0.4 mm for each set of revolving speed and residence time. Each set of dwell time to the variation of parameters has no significant clout on the tensile shear load. Good tensile shear loads can be achieved in the range of 45-53 MPa at a depth of tool of 0.4 mm and a revolving speed of 1400 rpm, where the best is 53 MPa at a residence time of 9 seconds.
The correct calculation of formation enthalpy is one of the enablers of ab-initio computational materials *** several classes of systems(***)standard density functional theory produces incorrect *** we propose the“co...
详细信息
The correct calculation of formation enthalpy is one of the enablers of ab-initio computational materials *** several classes of systems(***)standard density functional theory produces incorrect *** we propose the“coordination corrected enthalpies”method(CCE),based on the number of nearest neighbor cation–anion bonds,and also capable of correcting relative stability of *** uses calculations employing the Perdew,Burke and Ernzerhof(PBE),local density approximation(LDA)and strongly constrained and appropriately normed(SCAN)exchange correlation functionals,in conjunction with a quasiharmonic Debye model to treat zero-point vibrational and thermal *** benchmark,performed on binary and ternary oxides(halides),shows very accurate room temperature results for all functionals,with the smallest mean absolute error of 27(24)meV/atom obtained with *** zero-point vibrational and thermal contributions to the formation enthalpies are small and with different signs—largely canceling each other.
The aim the study was to analyze the effect of temperature storage of garlic seeds including weight loss, sprouting and damage during the storage period. The samples of Garlic seeds are local varieties, cv. Lumbu Hija...
详细信息
It is well known that the parts of Indonesia are considered as moderate to high seismicity zones. The Indonesian Standard for seismic design has been developed based on linear analysis which is the most common approac...
It is well known that the parts of Indonesia are considered as moderate to high seismicity zones. The Indonesian Standard for seismic design has been developed based on linear analysis which is the most common approach in seismic analysis. This study presents an evaluation of a low-rise reinforced concrete building using non-linear analysis. The main purpose of this study is to investigate the actual safety level of a concrete building seismically designed according to the Indonesian Standard. The results showed that the building satisfies the intended objectives of the seismic design both in terms of global and local response.
This paper presents a method for pose estimation of off-road vehicles moving over uneven terrain. It determines the contact points between the wheels and the terrain, assuming rigid contacts between an arbitrary numbe...
详细信息
Traditionally, any new development in soft robotics has to come first through many trial-and-error experiments. Many researchers tried to develop analytical models either to study certain phenomena in an already exist...
详细信息
The 3D double layer Ω-type FETs with ferroelectric HfZrO 2 gate served for one-transistor (1T) architecture is demonstrated and studied for memory reliability. The high endurance is presented more than 10 6 cycles ...
ISBN:
(数字)9781728131993
ISBN:
(纸本)9781728132006
The 3D double layer Ω-type FETs with ferroelectric HfZrO 2 gate served for one-transistor (1T) architecture is demonstrated and studied for memory reliability. The high endurance is presented more than 10 6 cycles P/E with 4V. Multi-domain model integrated with TCAD is proposed by adding a coupling coefficient for the polarization gradient term of the free energy, and calculating for nanosheet GAA-FETs. The polarization orientation is assigned randomly by Gaussian distribution into individual domain for multi-dimensional 3D device simulation. The data retention is degraded due to depolarization field occurrence at the corner by modeling results. The feasible structure paves the candidate for emerging memory applications.
Kemiri sunan (Reutalis trisperma (blanco) airy shaw) is a plant that has the potential to be developed as a biodiesel feedstock in Indonesia because its fruit seeds have several advantages compared to jatropha and pal...
Kemiri sunan (Reutalis trisperma (blanco) airy shaw) is a plant that has the potential to be developed as a biodiesel feedstock in Indonesia because its fruit seeds have several advantages compared to jatropha and palm oil, including its oil content and productivity. The biodiesel production process consists of three stages, namely, esterification, transesterification, and purification. The process requires strong mixing to obtain sufficient contact between the vegetable oil and the catalyst or alcohol, especially at the beginning of the reaction. It is carried out manually in the reaction process through mechanical mixing (stirring) and heating in the transesterification process. Furthermore, biodiesel production process is greatly influenced by the accuracy of concentration and type of catalyst. This study aims to identify the optimal method for the process of biodiesel production from kemiri sunan oil. The research was conducted with a one-stage transesterification to determine the biodiesel yield and quality. The results showed that several biodiesel parameters satisfied the Indonesian National Standard (SNI) for biodiesel (SNI number 7182:2015). However, the kinematic viscosity of biodiesel was still higher than the standard.
This paper discusses the stability of an equilibrium point of an ordinary differential equation (ODE) arising from a feed-forward position control for a musculoskeletal system. The studied system has a link, a joint a...
详细信息
暂无评论