scholarly journals ANALYSIS TOOL OVERHANG IN THE MACHINE CNC ET-242 ON SURFACE ROUGHNESS WITH VARIATION OF FEEDING

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Febi Rahmadianto ◽  
Dadang Hermawan
Keyword(s):  
Surface Roughness ◽  
Data Analysis ◽  
Analysis Tool ◽  
Workpiece Surface ◽  
Independent Variables ◽  
Good Surface ◽  
Cylindrical Workpiece ◽  
Good Surface Roughness

Lathe is a process to get the shape of the cylindrical workpiece by rotating the workpiece on the spindle and moving the chisel towards the workpiece. To be able to screw the workpiece of the chisel should hang and extend from the turret. The length of the hanging chisel is called the tool overhang (Zelinski, 2005: 1). There is no definite hint of setting the tool overhang and only adjusted between the position of the turret and workpiece. In order to achieve a good surface roughness, usually the overhang tool is arranged to a minimum.In this study the independent variables used are the tool overhang 14 mm, 21 mm, 28 mm, 35mm and feeding 0.15 mm rotation-1, 0.25 mm rotation -1, 0.35 mm. rotation -1. The measured dependent variable is the surface roughness of the workpiece.From the results of testing and data analysis can be concluded that the tool overhang effect on the roughness of the workpiece surface results of the process of lathe in various variations of feeding (feeding). The longer the tool overhang and the greater the feeding motion will result in greater surface roughness. The lowest surface roughness was obtained from a 14 mm long overhang tool and feeding 0.15 mm rotation-1.Keywords :  Machine CNC ET-242, Surface Roughness, Feeding Variation.

scholarly journals IMPLEMENTASI PROGRAM RENCANA PEMBANGUNAN JANGKA MENENGAH DAERAH (RPJMD) KABUPATEN KUTAI BARAT TAHUN 2011 - 2015

2019 ◽  
Vol 6 (2) ◽  
pp. 93
Author(s):  
Frans Christiyanto
Keyword(s):  
Data Analysis ◽  
Organizational Structure ◽  
Program Implementation ◽  
Quantitative Research ◽  
Qualitative Data ◽  
Survey Methods ◽  
Coefficient Of Determination ◽  
Survey Method ◽  
Analysis Tool ◽  
Independent Variables

The purpose of this paper is to analyze the effect of variable communication, resources, disposition and organizational structure for program implementation RPJMD West Kutai 2011-2015, either partially or simultaneously. Type of this research is quantitative research. The analysis tool used is multiple linear regression. In this study using survey methods explanation (explanatory survey method) is a survey that explains the variables under study and further analyze the influence between variables accompanied by hypothesis testing. This research was conducted by collecting qualitative data, which will then be presented in the form of numbers (quantified) to be tested in accordance with the design verification of data analysis. The results showed the coefficient of determination (R2) of 0.421. There is significant influence between independent variables namely communication, resources, disposition and organizational structure for program implementation RPJMD West Kutai 2011-2015.Keyword: Implementation RPJMD, Communication, Resources

scholarly journals Pengaruh Persepsi Konsumen, Labelisasi Halal dan Citra Merek Terhadap Keputusan Pembelian Produk Herbal Skincare SR12

2021 ◽  
Vol 5 (2) ◽  
pp. 263-273
Author(s):  
Ade Lia ◽  
Ibdalsyah Ibdalsyah ◽  
Hilman Hakiem
Keyword(s):  
Data Analysis ◽  
Research Method ◽  
Brand Image ◽  
Consumer Perceptions ◽  
Consumer Perception ◽  
Purchase Decision ◽  
Analysis Tool ◽  
Purchasing Decisions ◽  
Independent Variables ◽  
Data Analysis Tool

This study aims to determine the effect of consumer perceptions, halal labeling and brand image on purchasing decisions, while the independent variables are consumer perceptions, halal labeling and brand image. The data in this study were collected through questionnaires distributed to consumers who had purchased and used SR12 herbal skincare products in Bogor. The research method used is quantitative. The population in this study were consumers of SR12 herbal skincare products. With the data collected amounted to 100 respondents. The data analysis tool used in this study used multiple linear regression. The results of this study indicate that the variables of consumer perception, halal labeling and brand image have a positive and significant effect on purchasing decisions for sr12 herbal skincare products. Keywords: Consumer Perception, Halal Labeling, Brand Image and Purchase Decision

scholarly journals Surface Roughness Models and Their Experimental Validation in Micro Milling of 6061-T6 Al Alloy by Response Surface Methodology

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Jie Yi ◽  
Li Jiao ◽  
Xibin Wang ◽  
Junfeng Xiang ◽  
Meixia Yuan ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Response Surface ◽  
Removal Rate ◽  
Micro Milling ◽  
Al Alloy ◽  
Machined Surface ◽  
Contour Map ◽  
Good Surface ◽  
Micro Features ◽  
Good Surface Roughness

Due to the widespread use of high-accuracy miniature and micro features or components, it is required to predict the machined surface performance of the micro milling processes. In this paper, a new predictive model of the surface roughness is established by response surface method (RSM) according to the micro milling experiment of 6061-T6 aluminum alloy which is carried out based on the central composite circumscribed (CCC) design. Then the model is used to analyze the effects of parameters on the surface roughness, and it can be concluded that the surface roughness increases with the increasing of the feed rate and the decreasing of the spindle speed. At last, based on the model the contour map of the surface roughness and material removal rate is established for optimizing the process parameters to improve the cutting efficiency with good surface roughness. The prediction results from the model have good agreement with the experimental results.

Surface Roughness in High Feed Turning with Wiper Insert

2008 ◽  
Vol 375-376 ◽  
pp. 406-410 ◽  
Author(s):  
Zhan Qiang Liu ◽  
Peng Zhang ◽  
Peng Guo ◽  
Xing Ai
Keyword(s):  
Surface Roughness ◽  
Feed Rate ◽  
Machined Surface ◽  
Good Surface ◽  
Corner Radius ◽  
Number Of Factors ◽  
Machined Surface Roughness ◽  
High Feed ◽  
Good Surface Roughness ◽  
Coated Carbide

Surface roughness in a turning operation is affected by a great number of factors. Two of the most important factors are feed rate and the size of the corner radius. Surface roughness can be roughly determined to increase with the square of the feed rate and decrease with increased size of the corner radius. However, wiper insert geometries changed this relationship with the capability to generate good surface roughness at relatively higher feeds by transferring small part of the round insert edges into the straight cutting edges of the pointed insert. The principle of how wiper inserts behave different from conventional inserts as to the effects on the surface roughness is explored in this paper. Experimental study of the surface roughness produced in the turning of hardened mild steels using coated carbide tools with both conventional and wiper inserts is conducted. The test results prove the effectiveness of the wiper inserts in providing excellent surface roughness. The results also suggest that the use of the wiper insert is an effective way that significantly increases cutting efficiency without changing the machined surface roughness in high feed turning operations.

Polishing Experiment Study of the Elastic Coated Abrasives

2014 ◽  
Vol 941-944 ◽  
pp. 1981-1984
Author(s):  
Gui Lian Wang ◽  
Hai Bo Zhou ◽  
Shu Li Guo ◽  
De Chen Huang ◽  
Ren Bao Jiao ◽  
...  
Keyword(s):  
Surface Roughness ◽  
High Efficiency ◽  
Future Research ◽  
Workpiece Material ◽  
Good Surface ◽  
Aisi 1045 Steel ◽  
Good Surface Roughness ◽  
1045 Steel ◽  
Polishing Efficiency ◽  
Coated Abrasives

A kind of elastic coated abrasives used for polishing large mould surface, such as automobile panel mould, is investigated in this research. Many polishing experiments were finished by using elastic coated abrasives in order to study the effects of grit and workpiece material on surface roughness and machining efficiency. It is concluded that surface roughness is minimum and polishing efficiency is the highest when using 120# abrasives at the same condition, surface roughness is the lowest and polishing efficiency is the highest for AISI 1045 steel in three materials. The difficulty of material removal is different if the textures prior to polishing are different in workpiece surface. Surface texture prior to polishing has effects on surface roughness and polishing efficiency. The research results provide foundation for process planning to achieve good surface roughness and high efficiency in the future research.

scholarly journals Pengaruh Kecepatan dan Kedalaman Potong pada Proses Pembubutan Konvensional Terhadap Kekasaran Permukaan Lubang

2018 ◽  
Vol 3 (2) ◽  
pp. 82-86
Author(s):  
Bambang Siswanto ◽  
Sunyoto Sunyoto
Keyword(s):  
Surface Roughness ◽  
Descriptive Analysis ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cylinder Block ◽  
Depth Of Cut ◽  
Cast Aluminum ◽  
Turning Process ◽  
Workpiece Surface ◽  
Independent Variables

There are several factors that affect the roughness of the workpiece surface when doing turning process on the lathe, especially the use of cutting parameters. This study aims to determine the effect of cutting speed and depth of cut parameters on the roughness of cylinder block hole surface. This research is an experimental research using two independent variables, which are cutting speed and depth of cut. The dependent variable is surface roughness of cylinder block’s hole. The research was done by making cast aluminum specimens and then turning a hole in the specimen with varied cutting speed and depth of cut. The surface roughness was then tested using Surfcorder SE 300. The obtained data were analyzed using descriptive analysis. Results show that there is an effect of cutting speed on the surface roughness of cylinder block, with the best result (smallest roughness value) was obtained from the use of cutting speed of 125 m / min. There is also an effect of depth of cut on the surface roughness of the cylinder block, with the best result given from the use of a 0.2 mm depth of cut.Ada beberapa faktor yang mempengaruhi tingkat kekasaran permukaan benda kerja pada proses pembubutan. Penelitian ini bertujuan untuk mengetahui pengaruh parameter kecepatan potong dan kedalaman potong terhadap kekasaran permukaan pada pembubutan lubang blok silinder mesin pemotong rumput. Penelitian ini merupakan penelitian eksperimen dengan variabel bebas kecepatan potong dan kedalaman potong, dan variabel terikat kekasaran permukaan lubang. Penelitian dilakukan dengan pembuatan spesimen dengan proses pengecoran aluminium kemudian spesimen dibubut lubang dengan diberi variasi kecepatan potong dan variasi kedalaman potong. Hasil pembubutan dilakukan uji kekasaran menggunakan Surfcorder SE 300. Data yang diperoleh kemudian dianalisis dengan analisis deskriptif. Hasil penelitian menunjukkan bahwa ada pengaruh kecepatan potong terhadap hasil kekasaran permukaan blok silinder mesin pemotong rumput, hasil  paling baik dengan nilai kekasaran paling kecil diperoleh dari kecepatan potong 125 m/menit. Ada pengaruh kedalaman potong terhadap hasil kekasaran permukaan blok silinder mesin pemotong rumput, hasil paling baik dengan nilai kekasaran paling kecil diperoleh dari kedalaman potong 0,2 mm.

scholarly journals ANALISIS PENGARUH KEPUASAN, KUALITAS, DAN EXPERIENTIAL MARKETING TERHADAP WORD OF MOUTH APLIKASI WHATSAPP PADA MAHASISWA FEB UMT

2019 ◽  
Vol 6 (2) ◽  
Author(s):  
Hendi Eka Sumarga
Keyword(s):  
Data Analysis ◽  
Word Of Mouth ◽  
Sampling Technique ◽  
Positive Influence ◽  
Analysis Tool ◽  
Experiential Marketing ◽  
Probability Sampling ◽  
Know How ◽  
Independent Variables ◽  
Positive Effect

This study aims to analyze the effects of satisfaction, quality, andexperiential marketing on the creation of word of mouth in theapplication WhatsApp. This study uses three independent variables ofsatisfaction, quality, and experiential marketing with one dependentvariable ie word of mouth. The use of variables in this study is expectedto know how the process occurs and what are the factors driving thecreation of word of mouth in WhatsApp application. The sample of thisresearch is user of WhatsApp application from student of Faculty ofEconomics and Business of University of Muhammadiyah Tangerang.Samples were taken with non probability sampling technique. Dataanalysis of 160 respondents was done using Structural EquationModeling (SEM) as an analysis tool using LISREL 8.8 software. Based onthe results of data analysis, shows that: experiential marketing variableshave a positive influence and the greatest influence on word of mouthWhatsApp applications, satisfaction variable has a positive influence onword of mouth WhatsApp applications. The quality variable has theleast positive effect on word of mouth WhatsApp applications.

scholarly journals Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 2083
Author(s):  
Ken-Chuan Cheng ◽  
Chien-Yao Huang ◽  
Jung-Chou Hung ◽  
A-Cheng Wang ◽  
Yan-Cherng Lin
Keyword(s):  
Surface Roughness ◽  
Electrical Discharge Machining ◽  
Sine Wave ◽  
Optical Systems ◽  
Lens Array ◽  
Glass Molding ◽  
Good Surface ◽  
Good Surface Roughness ◽  
Micro Lens Array

The micro lens array (MLA) has played an important role in optical systems for the past few years, and the precision of pressing dies has dominated the quality of MLAs in glass molding. Few studies have covered the transcription effects on surface roughness of pressing dies for this technology. Therefore, this research utilized pressing dies to produce a sine-wave lens array on glass molding, to transform the Gauss-distributed spotlight into a uniform straight one and then characterize the transcription effects of these lenses. Pressing dies with a sine-wave shape were firstly cut by wire electrical discharge machining (WEDM), and then ultrasonic polishing using diamond abrasives was applied to finish the sine-wave surface with an original roughness of 0.2 μm Ra. Next, the sine-wave lens arrays were pressed by glass molding at the appropriate pressure and temperature, before evaluating the transcription effects of transforming the Gauss-distributed spotlight into a uniform straight one. The result showed that the sine-wave lens array stuck easily to the pressing die and then ruptured during glass molding due to the poor surface roughness of pressing tool. However, the diamond abrasive with appropriate sizes could establish good surface roughness on pressing dies via ultrasonic polishing, and the pressing die with a low surface roughness of 0.08 μm Ra was able to successfully perform MLA in the glass molding. However, only pressing dies with a surface roughness smaller than 0.023 μm Ra could produce precision glass lenses to transform the Gauss-distributed spotlight into a uniform straight one.

Research on Cutting Cast Super Alloy K24 with Milling and Abrasive Water Jet Methods

2011 ◽  
Vol 697-698 ◽  
pp. 157-160
Author(s):  
Yi Wan ◽  
Zhan Qiang Liu ◽  
Hong Tao Zhu ◽  
Xing Ai
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
High Efficiency ◽  
Abrasive Waterjet ◽  
Abrasive Water Jet ◽  
Good Surface ◽  
Low Efficiency ◽  
Good Surface Roughness ◽  
Super Alloy ◽  
Tool Cost

A difficult-to-machining material, cast supper alloy K24 has been cut with two different methods, milling and abrasive waterjet (AWJ). It is shown that milling is characterized by high tool cost, low efficiency, and good surface roughness while abrasive waterjet brings high efficiency and worse surface quality. The results have proven that the combination use of AWJ and milling is an efficient way in cutting K24.

scholarly journals Surface Modifications and Their Effects on Titanium Dental Implants

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
A. Jemat ◽  
M. J. Ghazali ◽  
M. Razali ◽  
Y. Otsuka
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Dental Implants ◽  
Pure Titanium ◽  
Titanium Implant ◽  
Implant Surface ◽  
Coating Application ◽  
Good Surface ◽  
Dental Implant Surface ◽  
Good Surface Roughness

This review covers several basic methodologies of surface treatment and their effects on titanium (Ti) implants. The importance of each treatment and its effects will be discussed in detail in order to compare their effectiveness in promoting osseointegration. Published literature for the last 18 years was selected with the use of keywords like titanium dental implant, surface roughness, coating, and osseointegration. Significant surface roughness played an important role in providing effective surface for bone implant contact, cell proliferation, and removal torque, despite having good mechanical properties. Overall, published studies indicated that an acid etched surface-modified and a coating application on commercial pure titanium implant was most preferable in producing the good surface roughness. Thus, a combination of a good surface roughness and mechanical properties of titanium could lead to successful dental implants.

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