scholarly journals RANCANG BANGUN KONSTRUKSI BODI PADA AUTOMATIC WELDING CARRIER MACHINE

2021 ◽  
Vol 2 (Mei) ◽  
pp. 1-9
Author(s):  
Andah Lugas Dhinata ◽  
Ahmad Ali Imron ◽  
Budi Harijanto

Manually system welding process still widely used and have a deficiency in it. Which work is accident often occur in it, the unstable arc of fire and quality of welding product still depends on the welder ability. The purpose of this study is to design a portable robotic welding tool equipped MIG(Metal Inert Gas) welding tool to support automation in the welding process. Mobility and work range of tools is supported by light and strong material and designed with relatively small dimensions and equipped leg robotics which is useful to adding work range of the tool in every single welding process. This study using experimentally and simulations methods in body construction and empirical calculation to know relevantly the result and simulation process. And the data obtained after calculating with imposition 98 N, pressure stress on the body is 3334 Pa, which is smaller than the Modulus of Elasticity Aluminum alloy type 5052, moreover, materials used are capable and safe. The riveted joint of the extensions of the body has fracture resistance 2,8 kN and used efficiency of 70% moreover this kind of extensions are efficient to apply on Automatic Welding Carrier Machine’s body.

2013 ◽  
Vol 756-759 ◽  
pp. 237-240
Author(s):  
Lei Liu ◽  
Huai Chu Dai ◽  
Ju Guang Lin

3G welding gun is a new kind of welding guns which uses servo motor as the driving device. And it is of modularity, simplicity, robustness and high performance and has obvious advantages compared with traditional welding guns. This paper exploited robot payload check program to make comparison of the differences between OBARA welding guns and 3G welding guns. The results verified the advantages of 3G welding guns. A case study to the application of 3G welding guns to the body side was conducted, and Delmia, a 3D platform for robotic simulation and OLP, was used to create the robot welding programs. Finally, the timing chart of welding process by means of 3G welding guns was analyzed.


Food Industry ◽  
2020 ◽  
Vol 5 (2) ◽  
pp. 71-78
Author(s):  
Ekaterina Minnikhanova ◽  
Nataliya Zavorokhina ◽  
Anna Gilina

Abstract The inclusion of polysaccharide thickeners in the recipes of sweet dishes increases the functional reserves of the body, contributes to the preservation of health and the prevention of diseases. The purpose of the research is to study the sensory characteristics of polysaccharides of various nature when combined with food acids, to develop a recipe for a basic mixture of low-calorie meals for public catering. The authors analyzed citric, lactic and succinic acids in combinations with polysaccharides of various nature. Organoleptic tests were evaluated by a touch panel. The organization of the tasting analysis corresponded to GOST ISO 6658-2016; the consistency was determined according to GOST 31986-2012, GOST ISO 11036-2017, GOST ISO 8588-2011. The optimal organoleptic combinations of the presented food acids and complex additives of sweeteners (CDP) were identified, which included aspartame, sodium saccharinate, Sucralose, sweetness coefficient – 340: the mixture with citric acid had a long pleasant aftertaste without foreign tastes and the best taste characteristics. Using the “A-not A” method, we found that the sample with the addition of CDP is identical to the sucrose solution. In the second part of the study, polysaccharides were added to model samples of acids with complex sweeteners; the best sensory characteristics were obtained by model samples consisting of a mixture of low-esterified Apple pectin with lactic acid and KDP. The technology of obtaining a stable elastic jelly using low-esterified Apple pectin has been developed, since the complex mixture of sweeteners and food acids does not have a dehydrating effect. Developed a dry mix recipe that can serve as a basic development, low-calorie sweet products for catering and has a variance of use of lactic and succinic acids, depending on the flavor characteristics of the raw materials used and its corrective ability.


2019 ◽  
Vol 3 (2) ◽  
pp. 111-118
Author(s):  
Bahtiar Wilantara ◽  
Raharjo Raharjo

This study aims to develop an analog compression tester measuring instrument into a digital compression tester as a measurement tool that can provide effectiveness and efficiency to users.                     This research is a research and development or R&D. This research was conducted in several steps, namely: problem identification, information gathering, product design, product manufacture, expert validation, product revision, testing, final production. The development of analog compression tester was first validated by material experts, media experts, and 15 students, and 5 students for field trials. The subjects of this study were vocational students at Taman Karya Madya Teknik Kebumen. Data collection techniques used in this study using instruments in the form of a questionnaire. The data analysis technique of this research is descriptive qualitative and quantitative descriptive percentage.                 The results of the development of digital compression tester designs are: 1) the tools and materials used are electric drill, grinding, cutter, goggles, gloves, masks, ruler, acetaminine welding, screwdriver, scissors, digital dial pressure gauge, hose, spark plugs, clamps , and nepel, 2) the manufacturing process that starts from the cutting process, the hole drilling process, the welding process and the process of connecting between components, 3) the workings of digital compression tester design that is reading the pressure or compression of the machine displayed on the monitor digitally using dial pressure digital gauge, 4) the test results obtained from the validation results from: a) material experts at 89% or Eligible; b) media experts at 85% or reasonable; c) response of field trial students in terms of ease of use and reading of 90% or feasible. Thus, the conclusion that the digital compression tester measuring instrument declared feasible to use for measurement.


2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Ferawati Ferawati ◽  
Siti Amiyakun

ABSTRAK Stress adalah suatu kondisi dimana tubuh terganggu karena tekanan psikologis. Stress dikaitkan bukan karena penyakit fisik lebih mengenai kejiwaan. Karena pengaruh stress tersebut maka penyakit fisik bisa muncul akibat lemahnya dan rendahnya daya tahan tubuh. Studi tentang kesehatan jiwa, telah menunjukkan terapi music sangat efektif dalam meredakan kegelisahan dan stress, mendorong perasaan rileks serta meredakan depresi. Tujuan dari penelitian ini adalah mengetahui pengaruh terapi music terhadap tingkat stress mahasiswa sebelum dan sesudah diberikan terapi musik.Penelitian ini merupakan penelitian Quasi Experiment dengan menggunakan rancangan one group pretest-posttest design. Sampel penelitian ini adalah 47 responden. Data dikumpulkan dengan mengisi kuesioner DASS. Pengolahan data dengan uji Wilcoxon Match Pairs Test. Hasil dari penelitian yaitu sebelum dilakukan pemberian terapi music didapatkan 7 mahasiswa atau (16,67%) mengalami stress berat. Setelah diberikan intervensi terapi music diketahui 7 orang mahasiswa (16,67%) mengalami penurunan tingkat stress. Kesimpulannya ada pengaruh pemberian terapi music terhadap tingkat stress pada mahasiswa Program Studi Ilmu Keperawatan Sekolah Tinggi Ilmu Kesehatan Insan Cendekia Husada Bojonegoro ( (0,000) dan nilai Z hitung – 6,557 sedangkan Z table 1,96 (Z hitung Z table) berarti Ho ditolak sehingga Ha diterima). Kata Kunci: Terapi Musik, Tingkat Stress. ABSTRACT Stress is a condition where the body is disrupted due to psychological pressure. Stress is associated not due to physical illness is more about the mental. Because of the influence of the stress then physical illness can arise due to the weakness and lack of endurance. The study of mental health, music therapy has shown very effective in relieving anxiety and stress, encourage relaxation and relieve feelings of depression. The purpose of this study was to determine the effect of music therapy on the stress level of students before and after therapy is given musik.Penelitian a Quasi Experiment study using a design one group pretest-posttest design. The sample was 47 respondents. Data were collected by filling out questionnaires DASS. Data processing by Wilcoxon Match Pairs Test. Results of the research that prior to giving music therapy students or obtained 7 (16.67%) experienced severe stress. After being given music In therapy interventions known 7 students (16.67%) decreased level of stress. In conclusion there is the effect of music therapy on the level of stress in students of Nursing Science College of Health Sciences Insan Scholar (0,000) and the Z count - 6.557 while the Z table  Husada Bojonegoro 1.96 (Z count Z table) means Ho is rejected so Ha is received). Key words: Music Therapy, Stress Levels.


2020 ◽  
Vol 86 ◽  
pp. 285-304
Author(s):  
Emilie Vannier

This paper concerns the architecture of formal burials from the La Tène period in north-western Gaul and southern Britain. The research focuses on the shape and dimensions of sepulchral pits containing inhumed or burnt human remains, on the different materials used for the internal elements, and the external constructions and structures covering, framing, or marking the burials. The study of these data exposes the preferred choices in the funerary architecture of Gallic and British communities during the last five centuries bc. The results reveal different regional funerary groups within three main cross-Channel zones according to the architectural elements of the graves and the main treatments of the body. The distinct characteristics of these groups highlight their common features and relationships with neighbouring areas of the Continental and Atlantic zones.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Erfan Dashtimoghadam ◽  
Farahnaz Fahimipour ◽  
Andrew N. Keith ◽  
Foad Vashahi ◽  
Pavel Popryadukhin ◽  
...  

AbstractCurrent materials used in biomedical devices do not match tissue’s mechanical properties and leach various chemicals into the body. These deficiencies pose significant health risks that are further exacerbated by invasive implantation procedures. Herein, we leverage the brush-like polymer architecture to design and administer minimally invasive injectable elastomers that cure in vivo into leachable-free implants with mechanical properties matching the surrounding tissue. This strategy allows tuning curing time from minutes to hours, which empowers a broad range of biomedical applications from rapid wound sealing to time-intensive reconstructive surgery. These injectable elastomers support in vitro cell proliferation, while also demonstrating in vivo implant integrity with a mild inflammatory response and minimal fibrotic encapsulation.


Author(s):  
Jean-Philippe Mathieu ◽  
Jean-Franc¸ois Rit ◽  
Je`roˆme Ferrari ◽  
David Hersant

Most safety related valves in EDF’s nuclear plant must prove their ability to sustain thermal shocks of approximately 240K amplitude. This paper evaluates the simulation of a globe valve tested for thermal shocks. Since the physical test campaign showed inadequate internal sealing, the simulation focuses on the residual deformation of the hard alloy, planar seat, welded on successive body designs. This deformation is the result of the thermal loadings first induced by the welding process, then by fluid flow inside the valve. A chain of 3D simulations successively computes: a welding temperature transient in the body, the resulting strain hardening — especially in the seat vicinity —; temperature transients in the flow and the valve parts, and the resulting strains in the body causing a bump deformation of the seat surface. This end result agrees with measurements on the tested valve specimen. We show that inaccurate results are obtained on simpler assumptions, such as no welding, and we give insights on the dominant effect of the first hot, cold, hot transient over other profiles. Finally, the agreement we obtain on deformation predictions is toned down by an unsatisfactory sealing prediction, as well as the complexity and duration of the simulation chain compared with physical testing.


2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Oleg Riabov

This article deals with the US Cold War cinematographic construction of the Soviet enemy. The researcher focuses on the means of dehumanising the communist enemy, external and internal, by equating it to a machine. The author applies Nick Haslam’s dual model of dehumanization (2006), according to which dehumanization is visible in two main forms: animalistic, by associating members of the out-group with animals, and mechanistic, by associating them with a soulless machine. The materials used consist of US films from the “Long Fifties”, in which Hollywood, equating the enemy to machines, developed three plots: the robotic existence of individuals in a totalitarian society; the transformation of Americans into zombies by communists by means of Soviet science; and the body snatching of Americans by an alien mind, an allegory of a future communist occupation of the USA. The article demonstrates that dehumanization was implemented by directly labeling the representatives of the communist world as robots and by attributing to them a lack of emotions, consciousness, will, individuality, initiative, warmth, love, friendship, creative abilities, and even the ability to smile. Such an image of the enemy implied a moral exclusion, treating them as an inanimate object unworthy of empathy, including in the event of their destruction. The author points out that the use of mechanistic dehumanization was very effective. Essentialization of the differences between “us” and “them” occurred: the symbolic border between them is presented as a boundary between living and nonliving. The image of mortal danger was created: the “Red Machine” is strong and merciless, it cannot be moved to pity, and so it is permissible to destroy it. This image contributed to the legitimation of power: the political opponents of the authorities are represented as internal enemies who are anxious to turn Americans into obedient executors of someone else’s will and to deprive them of humanity. At the same time, the machine also has weaknesses, and it is possible to defeat it: since it is devoid of human creativity, it is clearly inferior to the free human spirit embodied in America.


2020 ◽  
Author(s):  
Erfan Dashtimoghadam ◽  
Farahnaz Fahimipour ◽  
Andrew Keith ◽  
Foad Vashahi ◽  
Pavel Popryadukhin ◽  
...  

Abstract Current materials used in biomedical devices do not match tissue’s mechanical properties and leach various chemicals into the body. These deficiencies pose significant health risks that are further exacerbated by invasive implantation procedures. Herein, we leverage the brush-like polymer architecture to design and administer minimally invasive injectable elastomers that cure in vivo into leachable-free implants with mechanical properties matching the surrounding tissue. This strategy allows tuning curing time from minutes to hours, which empowers a broad range of biomedical applications from rapid wound sealing to time-intensive reconstructive surgery. These injectable elastomers support in vitro cell proliferation, while also demonstrating in vivo implant integrity with a mild inflammatory response and minimal fibrotic encapsulation.


2021 ◽  
Author(s):  
Yanfeng Gao ◽  
Jianhua Xiao ◽  
Genliang Xiong ◽  
Hua Zhang

Abstract It is essential to sense the deviation of weld seam real-timely in robotic welding process. However, welding process always accompanied with high temperature, strong arc light and background noises, which significantly affects the application of sensors. In this study, a novel acoustic sensor was developed. This sensor consists of two microphones. Based on the sound signals collected by these two microphones, the deviation of weld seam was detected. The frequency response of the developed acoustic sensor was studied through simulation method firstly, and then the sensing performance of it was analyzed with experiments. The experimental results show that the developed acoustic sensor has a linear property for the deviation detection of V-groove weld seam. This research provides a novel method for weld seam tracking.


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