Variation management of key control characteristics in multistage machining processes considering quality-cost equilibrium

2021 ◽  
Vol 59 ◽  
pp. 441-452
Author(s):  
Kun Wang ◽  
Yaxiang Yin ◽  
Shichang Du ◽  
Lifeng Xi
Keyword(s):  
Machining Processes ◽  
Quality Cost ◽  
Variation Management

CASE STUDY OF A QUALITY COST MODEL IN A SMALL BUSINESS

2016 ◽  
Vol 7 (2) ◽  
pp. 1-24
Author(s):  
Neto Jose Alves da Silva ◽  
◽  
Giacaglia Giorgio Eugenio Oscare ◽  
Keyword(s):  
Small Business ◽  
Cost Model ◽  
Quality Cost

Parameters optimization of advanced machining processes using TLBO algorithm

2011 ◽  
Author(s):  
Rao R V ◽  
◽  
Kalyankar V D ◽  
Keyword(s):  
Parameters Optimization ◽  
Machining Processes ◽  
Tlbo Algorithm ◽  
Advanced Machining

ANALISIS BIAYA KUALITAS DAN PRODUKTIVITAS PADA MAHASISIWA UNIVERSITAS ISLAM 45

2018 ◽  
Vol 9 (2) ◽  
pp. 234-257
Author(s):  
Anisa Putri
Keyword(s):  
Secondary Data ◽  
Total Quality ◽  
Quality Cost ◽  
Productivity Costs ◽  
School Year ◽  
Quality Costs ◽  
Qualitative Descriptive ◽  
The Cost ◽  
New Student ◽  
Academic Year

The aim to be achieved in this study is to analyze the quality and productivity costs of case studies at the Islamic University of 45 Bekasi. The research method used in this study is a qualitative descriptive method. The location of the study was conducted at the Islamic University of 45 Bekasi. The data used is secondary data from the financial statements of Islamic University of 45 Bekasi in the academic year 2013/2014. Methods of data collection using interviews and observation. The highest quality cost discussion results are prevention costs at the cost of seminars and training for lecturers as much as Rp. 450,561,400, -. The lowest quality cost is the assessment fee at the cost of lecturer accreditation of Rp. 1,925,000, -. The percentage of quality costs is 2.1% smaller than the fairness of the total quality costs of 2.5%. The realization of the output of new student admissions was obtained in the 2013/2014 school year as many as 1,339 people. Total students 6,364 people. The study period is more than 4 years and has not graduated as many as 992 people. Failure costs as much as 16% of total students. Realization of financial output was achieved in the amount of Rp. 39,384,232,556, - ​​Input Rp. 35,606,307,800, - used to obtain output. Company productivity is efficient because output is greater than input. Company productivity is effective because the company achieves financial goals by obtaining a surplus of Rp. 3,777,924,756, - The conclusion that can be drawn is that quality costs are able to obtain output in the form of income exceeding its input value so that productivity is efficient and effective and surplus.

Review of Quality Cost Management in Service Industry

2019 ◽  
Vol 19 (3) ◽  
pp. 29-49
Author(s):  
Juhyeok Jang
Keyword(s):  
Service Industry ◽  
Cost Management ◽  
Quality Cost

Studying The Effect of a New Mixed Cutting Fluid on Surface Roughness

2020 ◽  
Vol 38 (11A) ◽  
pp. 1593-1601
Author(s):  
Mohammed H. Shaker ◽  
Salah K. Jawad ◽  
Maan A. Tawfiq
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Cutting Parameters ◽  
Machining Process ◽  
Cutting Fluid ◽  
Depth Of Cut ◽  
Cutting Fluids ◽  
Machining Processes ◽  
Dry Cutting ◽  
Cutting Speeds

This research studied the influence of cutting fluids and cutting parameters on the surface roughness for stainless steel worked by turning machine in dry and wet cutting cases. The work was done with different cutting speeds, and feed rates with a fixed depth of cutting. During the machining process, heat was generated and effects of higher surface roughness of work material. In this study, the effects of some cutting fluids, and dry cutting on surface roughness have been examined in turning of AISI316 stainless steel material. Sodium Lauryl Ether Sulfate (SLES) instead of other soluble oils has been used and compared to dry machining processes. Experiments have been performed at four cutting speeds (60, 95, 155, 240) m/min, feed rates (0.065, 0.08, 0.096, 0.114) mm/rev. and constant depth of cut (0.5) mm. The amount of decrease in Ra after the used suggested mixture arrived at (0.21µm), while Ra exceeded (1µm) in case of soluble oils This means the suggested mixture gave the best results of lubricating properties than other cases.

Analisis Evaluasi Kinerja Vendor Berdasarkan Penetapan Kriteria Vendor Performance Indicator (VPI) Menggunakan Metode Analytical Hierarchy Process (AHP) Pada PT. XYZ

2019 ◽  
Vol 2 (2) ◽  
pp. 113
Author(s):  
Nadya Uci Pramita ◽  
Adhitomo Wirawan
Keyword(s):  
Performance Evaluation ◽  
Carbon Steel ◽  
Analytical Hierarchy Process ◽  
Pressure Vessel ◽  
Performance Indicator ◽  
Evaluation Process ◽  
Raw Material ◽  
Quality Cost ◽  
Questionnaire Method ◽  
Hierarchy Process

The purpose of this study is to analyze the process of performance evaluation of vendors especially in the vendor that provides a raw material for pressure vessel plate made of carbon steel. As for the evaluation process undertaken by PT. XYZ through performance indicators (KPI) where an evaluation that applied a focus on quality and delivery. In this study, researchers used the designation criteria vendor performance indicator (VPI) where the criteria used consist of quality, cost, delivery, flexibility and responsiveness (QCDFR). The methods used in the analysis process that is Analytical Hierarchy Process (AHP). Data collecting directionally by questionnaire method among 3 respondents on the procurement department that know the performance of the vendors over the years. The result showed that PT. RE has the best performance among the four vendors, as known PT.SS, PT. ST, PT. CH and PT. UN within value 0.540; The vendor with lowest performance owned by PT.CH within value 0.034.Keyword : Analytical Hierarchy Process (AHP), vendor performance indicator (vpi), plate pressure vessel, vendor performance evaluation Penelitian ini bertujuan untuk menganalisis proses evaluasi kinerja vendor khususnya pada vendor yang mensupplai bahan baku plate pressure vessel berbahan carbon steel. Adapun proses evaluasi yang dilakukan oleh PT. XYZ melalui key performance indicator (KPI) dimana evaluasi yang diterapkan hanya berfokus pada quality dan delivery. Dalam studi ini, peneliti menggunakan penetapan kriteria Vendor Performance Indicator (VPI) dimana kriteria yang digunakan yaitu quality, cost, delivery, flexibility dan responsiveness (QCDFR). Metode yang digunakan dalam proses analisis yaitu Analytical Hierarchy Process (AHP). Pengambilan data menggunakan kuisioner terhadap 3 informan pada departemen procurement yang dianggap mengetahui kinerja vendor selama ini. Adapun hasil penelitian menunjukkan bahwa PT. RE memiliki kinerja yang terbaik diantara keempat vendor yaitu PT. SS, PT. ST, PT. CH serta PT. UN dengan nilai bobot sebesar 0.540 sedangkan vendor dengan kinerja terendah dimiliki oleh PT. CH dengan nilai bobot sebesar 0.034.Kata kunci : Analytical Hierarchy Process (AHP), vendor performance indicator (VPI), plate pressure vessel, evaluasi kinerja vendor.

Analysis of Material Behaviour at High Strain Rates for Modeling Machining Processes

2001 ◽  
Vol 4 (3-4) ◽  
pp. 499-509 ◽  
Author(s):  
Paolo Bariani ◽  
Guido Berti ◽  
Stefano Corazza
Keyword(s):  
High Strain ◽  
Strain Rates ◽  
Material Behaviour ◽  
High Strain Rates ◽  
Machining Processes

Water Recycling: Review and Background

1982 ◽  
Vol 14 (9-11) ◽  
pp. 1385-1392
Author(s):  
K D Linstedt
Keyword(s):  
Water Quality ◽  
Water Resource ◽  
Water Reuse ◽  
Public Acceptance ◽  
Institutional Constraints ◽  
Water Recycling ◽  
Quality Cost ◽  
The World ◽  
Resource Situation

A review is provided of the world water resource situation. Water reuse is discussed as a means of augmenting conventional supplies, with types of potential reuse applications identified. Considerations of water quality, cost, public acceptance, and institutional constraints are discussed for their impact on decisions regarding implementation of water reuse.

A state-of-art review on chatter and geometric errors in thin-wall machining processes

2021 ◽  
Vol 68 ◽  
pp. 454-480
Author(s):  
Ge Wu ◽  
Guangxian Li ◽  
Wencheng Pan ◽  
Izamshah Raja ◽  
Xu Wang ◽  
...  
Keyword(s):  
Thin Wall ◽  
Geometric Errors ◽  
Machining Processes ◽  
State Of Art

scholarly journals Temperature monitoring in the subsurface during single lip deep hole drilling

2020 ◽  
Vol 87 (12) ◽  
pp. 757-767
Author(s):  
Robert Wegert ◽  
Vinzenz Guski ◽  
Hans-Christian Möhring ◽  
Siegfried Schmauder
Keyword(s):  
Cutting Parameters ◽  
Drill Hole ◽  
Machining Process ◽  
Hole Drilling ◽  
Drilling Process ◽  
Deep Hole ◽  
Machining Processes ◽  
Deep Hole Drilling ◽  
Feed Force ◽  
Cutting Zone

AbstractThe surface quality and the subsurface properties such as hardness, residual stresses and grain size of a drill hole are dependent on the cutting parameters of the single lip deep hole drilling process and therefore on the thermomechanical as-is state in the cutting zone and in the contact zone between the guide pads and the drill hole surface. In this contribution, the main objectives are the in-process measurement of the thermal as-is state in the subsurface of a drilling hole by means of thermocouples as well as the feed force and drilling torque evaluation. FE simulation results to verify the investigations and to predict the thermomechanical conditions in the cutting zone are presented as well. The work is part of an interdisciplinary research project in the framework of the priority program “Surface Conditioning in Machining Processes” (SPP 2086) of the German Research Foundation (DFG).This contribution provides an overview of the effects of cutting parameters, cooling lubrication and including wear on the thermal conditions in the subsurface and mechanical loads during this machining process. At first, a test set up for the in-process temperature measurement will be presented with the execution as well as the analysis of the resulting temperature, feed force and drilling torque during drilling a 42CrMo4 steel. Furthermore, the results of process simulations and the validation of this applied FE approach with measured quantities are presented.

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