scholarly journals PEMANFAATAN KICK FOOT SENSOR UNTUK MEKANISME BUKA TUTUP BAGASI KENDARAAN

Otopro ◽  
2021 ◽  
pp. 8-14
Author(s):  
Ian Hardianto Siahaan ◽  
Andreas Sastro Wibowo
Keyword(s):  
Input Data ◽  
Motion Sensor ◽  
Test Results ◽  
Second Stage ◽  
Free Body Diagram ◽  
Important Target ◽  
Back Door ◽  
Target Set ◽  
Free Body ◽  
Opening And Closing

Along with its development, car manufacturers are increasingly improving safety and security features in each of their products. Currently, this element of safety and security has become an important target in the development of the existence of various features that exist in a vehicle. In this study, the power back door feature is implemented by using the kick foot sensor as input data to open and close the trunk of the vehicle through the actuator. This feature uses a foot sensor so you don't have to press any buttons, just point your foot under the rear bumper and the sensor will automatically read and open the trunk door. This feature is very helpful for passengers who want to put their luggage in the trunk but have both hands to carry items such as bags or plastic shopping bags. There are several stages carried out in this research. In the first stage, the specification of the required actuator motor, including force and torque, is carried out by analyzing the free body diagram to be able to open and close the trunk. In the second stage, the trunk door is tested when the condition is open and close. From the test results, the average time to open the trunk is 11.79 seconds, while the average time to close the trunk is 11.56 seconds. The time obtained is faster than the initial design target set, which is 15 seconds both when opening and closing the trunk. While the sensitivity of the motion sensor can range from 20 mm to 400 mm when the foot is directly under the sensor.

scholarly journals Proses Pembuatan Hidrolisat Protein Ikan Rucah

2012 ◽  
Vol 13 (3) ◽  
pp. 256
Author(s):  
Dyah Koesoemawardani ◽  
Fibra Nurainy ◽  
Sri Hidayati
Keyword(s):  
Soluble Protein ◽  
Emulsion Stability ◽  
Enzyme Concentration ◽  
Test Results ◽  
Fish Protein ◽  
Protein Hydrolyzate ◽  
Second Stage ◽  
Trash Fish ◽  
Two Stages ◽  
Fish Protein Hydrolysates

This study aimed to find optimum manufacturing trash fish protein hydrolyzate using the commercial papainenzyme. It is known that fish protein hydrolysates have good functional properties, so it is more widely utilized,especially for food. The study was conducted in two stages, the first stage was to make trash fish protein hydrolyzatetreated with enzyme concentration of 3%, 5%, 7% (w/w), and pH 5; 5.5; 6; 6.5; 7, whereas second stage was to maketrash fish protein hydrolyzate with same from the first stage and so the best treatment followed by treatment ofhalf-hour long incubation and one hour. Parameters observed were soluble protein, foamability, fat binding capacityand emulsion stability. The treatment was repeated three times and the first phase of data analysis using advancedtesting LSD and the second stage using the T test. Results show that the best soluble protein to produce a trashfish protein hydrolyzate enzyme was at a concentration of 5% and pH = 6.5 that was equal to 19.71%. In half an hourincubation produce higher soluble protein values and foamability that were equal to 24.97% and 9.63%, while thebinding capacity of fat in one hour incubation produces a higher value that was equal to 5.03%. Meanwhile, emulsionstability did not differ significantly at both incubation time.

scholarly journals Study on Suitability and Behaviour of Ferrocement in Folded Plates

2021 ◽  
Vol 9 (VI) ◽  
pp. 3540-3546
Author(s):  
Mr. V. Karthick
Keyword(s):  
Stainless Steel ◽  
Compressive Strength ◽  
Cross Section ◽  
Test Results ◽  
Logical Investigation ◽  
Second Stage ◽  
Concrete Application ◽  
Extended Range ◽  
Properties Of Materials ◽  
Low Consumption

Ferro concrete is one of the developments arising material an alternative for the traditional RCC in numerous viewpoints. Ferro concrete is the fate of the minimal expense houses and precast houses. Folded plates are answer for the more extended range rooftops in prudent and aesthetical manner. This project consolidates the upsides of both Ferro concrete and collapsed plate. The box type Ferro concrete collapsed plates of size 0.6 m x 1.80 m x 0.15 m are casted by thinking about various diaries and RCC collapsed plates in thought while fixing dimensions. In first period of trial various properties of materials utilized for projecting are tried and compressive strength of the mortar utilized is tried, the test is done at 1:2 of concrete: sand proportion and 0.35 water concrete ratio. In second stage the example is casted with Stainless Steel cross section of 2 mm opening is utilized and 2 layers on front and posteriors of 6mm width 150m divided skeleton steel is laid. The projected examples is tried for 28 days strength in stacking outline and the outcomes are contrasted and logical investigation Using ANSYS for load versus redirection and reasonableness of Ferro concrete application in collapsed plates are studies. The test results are shown acceptable outcomes, at last with low consumption and low self-weight Ferro concrete constructions are acceptable substitute for RCC.

Dynamics of Mechanical Systems and the Generalized Free-Body Diagram—Part I: General Formulation

2008 ◽  
Vol 75 (6) ◽  
Author(s):  
József Kövecses
Keyword(s):  
Configuration Space ◽  
Dynamic Equilibrium ◽  
Mechanical Systems ◽  
Constrained Systems ◽  
Dynamic Equations ◽  
Analytical Mechanics ◽  
Constrained Motion ◽  
Equilibrium Equations ◽  
Free Body Diagram ◽  
Free Body

In this paper, we generalize the idea of the free-body diagram for analytical mechanics for representations of mechanical systems in configuration space. The configuration space is characterized locally by an Euclidean tangent space. A key element in this work relies on the relaxation of constraint conditions. A new set of steps is proposed to treat constrained systems. According to this, the analysis should be broken down to two levels: (1) the specification of a transformation via the relaxation of the constraints; this defines a subspace, the space of constrained motion; and (2) specification of conditions on the motion in the space of constrained motion. The formulation and analysis associated with the first step can be seen as the generalization of the idea of the free-body diagram. This formulation is worked out in detail in this paper. The complement of the space of constrained motion is the space of admissible motion. The parametrization of this second subspace is generally the task of the analyst. If the two subspaces are orthogonal then useful decoupling can be achieved in the dynamics formulation. Conditions are developed for this orthogonality. Based on this, the dynamic equations are developed for constrained and admissible motions. These are the dynamic equilibrium equations associated with the generalized free-body diagram. They are valid for a broad range of constrained systems, which can include, for example, bilaterally constrained systems, redundantly constrained systems, unilaterally constrained systems, and nonideal constraint realization.

Response of Concrete Filled Carbon Sheet Tube Column under Axial and Lateral Loads

2015 ◽  
Vol 764-765 ◽  
pp. 1109-1113 ◽  
Author(s):  
Kyung Hoon Lee ◽  
Hee Cheul Kim ◽  
Jae Hong Kim ◽  
Young Hak Lee
Keyword(s):  
Experimental Tests ◽  
Fiber Reinforced Polymer ◽  
Analytical Models ◽  
Experimental Program ◽  
Test Results ◽  
Lateral Loads ◽  
Strain Characteristic ◽  
Second Stage ◽  
Reinforced Polymer ◽  
Carbon Sheet

Experimental tests have been conducted to investigate the performance of Concrete Filled Carbon Fiber Reinforced Polymer Sheet Tube (CFCST) columns. The main variables of this experimental program were the number and wrapping angles of CFRP sheets. In the first stage, stress versus strain characteristic of CFCST specimens was investigated by uni-axial tests. In the second stage, six full-scaled CFCST columns subjected to quasi-static lateral loading, as well as constant axial compression, were tested. The test results showed that the response of CFCST was seriously influenced by these two variables. This test results could be utilized for establishing the analytical models.

Mechanix: A natural sketch interface tool for teaching truss analysis and free-body diagrams

2014 ◽  
Vol 28 (2) ◽  
pp. 169-192 ◽  
Author(s):  
Olufunmilola Atilola ◽  
Stephanie Valentine ◽  
Hong-Hoe Kim ◽  
David Turner ◽  
Erin McTigue ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Engineering Students ◽  
Online Courses ◽  
Teaching Method ◽  
Tutoring Systems ◽  
Online Systems ◽  
Constructive Feedback ◽  
Domain Specific ◽  
Free Body Diagram ◽  
Free Body

AbstractMassive open online courses, online tutoring systems, and other computer homework systems are rapidly changing engineering education by providing increased student feedback and capitalizing upon online systems' scalability. While online homework systems provide great benefits, a growing concern among engineering educators is that students are losing both the critical art of sketching and the ability to take a real system and reduce it to an accurate but simplified free-body diagram (FBD). For example, some online systems allow the drag and drop of forces onto FBDs, but they do not allow the user to sketch the FBDs, which is a vital part of the learning process. In this paper, we discuss Mechanix, a sketch recognition tool that provides an efficient means for engineering students to learn how to draw truss FBDs and solve truss problems. The system allows students to sketch FBDs into a tablet computer or by using a mouse and a standard computer monitor. Using artificial intelligence, Mechanix can determine not only the component shapes and features of the diagram but also the relationships between those shapes and features. Because Mechanix is domain specific, it can use those relationships to determine not only whether a student's work is correct but also why it is incorrect. Mechanix is then able to provide immediate, constructive feedback to students without providing final answers. Within this manuscript, we document the inner workings of Mechanix, including the artificial intelligence behind the scenes, and present studies of the effects on student learning. The evaluations have shown that Mechanix is as effective as paper-and-pencil-based homework for teaching method of joints truss analysis; focus groups with students who used the program have revealed that they believe Mechanix enhances their learning and that they are highly engaged while using it.

New Method to Assist Discrimination of Liver Diseases by Spherical SOM with Mahalanobis Distance

2012 ◽  
Vol 16 (1) ◽  
pp. 55-61 ◽  
Author(s):  
Norie Kanzaki ◽  
◽  
Akihiro Kanagawa ◽  
Keyword(s):  
Acute Hepatitis ◽  
Mahalanobis Distance ◽  
Blood Test ◽  
Input Data ◽  
Distance Measure ◽  
Medical Data ◽  
Data Conversion ◽  
Test Results ◽  
Automated Diagnosis ◽  
Test Items

Spherical SOM, an improved version of a kind of neutral network SOM, has successfully been applied to data analysis in a variety of fields achieving effective results. However, distance measure of commercial spherical SOM is limited to the Euclidean distance and it is not suitable enough to the analysis of biased data such as blood test results. The Mahalanobis distance is said to be effective for the analysis of such medical data. Therefore it is expected that better results should be obtained if spherical SOM with Mahalanobis distance is applied to the analysis of medical data. In this paper, we take blood test items as multi-dimensional vectors and convert the input data into Mahalanobis distance with the aim of developing an automated diagnosis system by spherical SOM with Mahalanobis distance as pseudo input data. Conversion of the input data into Mahalanobis distance ensures correct evaluations of the biased data of blood test results at the same time allowing automated diagnosis based on doctors’ intuitions and experiences. We have grouped subjects of diagnosis whose features were not well discriminated by conventional Mahalanobis distance and have administered detailed discrimination by the group and obtained better discrimination rates. While in the conventional studies TP rates for the following five categories, no liverrelated problem, hepatoma (liver cancer), acute hepatitis, chronic hepatitis and liver cirrhosis, were 100%, 70%, 100%, 80% and 60% respectively, they were 96%, 80%, 71%, 86% and 91% respectively with the proposed method. Significant results were obtained overall except for acute hepatitis.

A New Support Structure in Waverider Force Measurement

2013 ◽  
Vol 318 ◽  
pp. 96-99
Author(s):  
Xue Jun Zhao ◽  
Xiao Guo Guo ◽  
Chang Zhao
Keyword(s):  
Wind Tunnel ◽  
Force Measurement ◽  
Test Results ◽  
Force Measurements ◽  
Support Structure ◽  
Inlet Flow ◽  
Hypersonic Wind Tunnel ◽  
Vehicle Aerodynamics ◽  
Set Up ◽  
Opening And Closing

In this paper a new support structure was given to solve the problem met in the force measurement with engine jet. The force measurements of waverider were undertaken in the hypersonic wind tunnel. The test condition was at Ma=6, angle of attack α=-6°-6°, at which we researched the effects on the vehicle aerodynamics of inlet cowl opening and closing, support system, engine jet, and pressure ratios. To decrease the effects of strut on the jet flow-field, we took sharp belly strut to support the model in the wind tunnel. The belly strut could support the waverider model, force measurement balance, and it could make the inlet flow set up, and provide the high pressure jet. The test results showed that the belly sharp strut had little effects on the flowfield and could inject the inlet flow, and could provide very high quality jet.

Freeze-Thawing Damage Model of New-to-Old Concrete with Different Rough Interfaces

2013 ◽  
Vol 405-408 ◽  
pp. 2707-2714 ◽  
Author(s):  
Cheng Yi ◽  
Su Ling Lai ◽  
Hong Guang Zhu ◽  
Shi Hong Yan ◽  
Jian Xia Liu ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Rough Surface ◽  
Smooth Surface ◽  
Substrate Surface ◽  
Damage Model ◽  
Test Results ◽  
Two Stage ◽  
Second Stage ◽  
Rough Substrate ◽  
Substrate Surfaces

New-to-old concrete freeze-thawing durability affects the safety and normal service of structure. In this paper, the freeze-thawing resistance of new-to-old concrete with different rough substrate surfaces was studied. The roughness of substrate surface was characterized by fractal dimension. Test results show that freeze-thawing damage of new-to-old concrete has two stage changes: first stage, freeze-thawing damage increases rapidly, mainly caused by the damage of interface; second stage, freeze-thawing damage increases slower, mainly reflects damage of substrate and overlay. Compared with smooth surface, rough surface can significantly improve freeze-thawing resistance of new-to-old concrete. In a certain range, with the increase of fractal dimension, the freeze-thawing resistance improves. When the fractal dimension is beyond the range, the freeze-thawing resistance impairs while the fractal dimension increases. A freeze-thawing damage model applied to new-to-old concrete is proposed, and a good correlation is found between the model and experimental results.

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