Glass-Mold Defective Reduction in Plastic Lenses Manufacturing Process Using Six Sigma Approach

2010 ◽  
Vol 156-157 ◽  
pp. 1598-1602 ◽  
Author(s):  
Napassavong Rojanarowan ◽  
Teeraporn Senprom
Keyword(s):  
Six Sigma ◽  
Manufacturing Process ◽  
Production Cost ◽  
Glass Mold ◽  
Statistical Tools ◽  
Sigma Level ◽  
Six Sigma Methodology ◽  
Six Sigma Approach

This research aims to demonstrate Six Sigma methodology to reduce defective rate. A case of glass-mold defective reduction in plastic lenses manufacturing was studied. After applying systematic DMAIC steps and statistical tools suggested by Six Sigma approach, it was observed that the defective rate due to scratched molds was decreased from 2,512 ppm to 826 ppm, and the sigma level was improved from 4.31 to 4.65. In addition, the improvement could save the production cost up to 75,000 USD annually.

Measure and Analyze the Problems of Concrete Mixture Production via Six Sigma DMAIC Tools: Central Concrete Mix Plant as a Case Study

2012 ◽  
Vol 622-623 ◽  
pp. 472-477
Author(s):  
Ali A. Karakhan ◽  
Angham E. Alsaffar
Keyword(s):  
Six Sigma ◽  
Business Strategy ◽  
Concrete Mixture ◽  
Statistical Tools ◽  
Sigma Level ◽  
Defect Rate ◽  
Concrete Production ◽  
Concrete Mix ◽  
Six Sigma Methodology

The aims of this study are to measure the defect rate and analyze the problems of production of ready concrete mixture plant by using Six Sigma methodology which is a business strategy for operations improvement depending basically on the application of its sub-methodology DMAIC improvement cycle and the basic statistical tools where the process sigma level of concrete production in the case study was 2.41 σ.

Measure and Analyze the Problems of Concrete Mixture Production via Six Sigma DMAIC Tools: Central Concrete Mix Plant as a Case Study

2013 ◽  
Vol 313-314 ◽  
pp. 771-776
Author(s):  
Ali A. Karakhan ◽  
Angham E. Alsaffar
Keyword(s):  
Six Sigma ◽  
Business Strategy ◽  
Concrete Mixture ◽  
Statistical Tools ◽  
Sigma Level ◽  
Defect Rate ◽  
Concrete Production ◽  
Concrete Mix ◽  
Six Sigma Methodology

The aims of this study are to measure the defect rate and analyze the problems of production of ready concrete mixture plant by using Six Sigma methodology which is a business strategy for operations improvement depending basically on the application of its sub-methodology DMAIC improvement cycle and the basic statistical tools where the process sigma level of concrete production in the case study was 2.41 σ.

Credit card account opening excellence using six sigma methodology

2016 ◽  
Vol 7 (3) ◽  
pp. 294-323 ◽  
Author(s):  
Samsul Islam
Keyword(s):  
Process Improvement ◽  
Six Sigma ◽  
Credit Card ◽  
Current Knowledge ◽  
Case Study Methodology ◽  
Content Type ◽  
Study Results ◽  
Six Sigma Methodology ◽  
Six Sigma Approach ◽  
Opening Process

Purpose This study aims to expand the current knowledge of the Six Sigma approach in a period of time when there is little direct evidence of the need to improve the credit card account opening process. This is an important but neglected area of focus in the Six Sigma literature. This study explores the extent to which process improvement practices are extended to the credit card department. Design/methodology/approach A case study methodology is adopted in this study to facilitate an exploration of the implemented Six Sigma approach in the credit card department of a leading commercial bank. The process improvement tool used is the define, measure, analyze, improve and control (DMAIC) cycle. Findings The study’s results confirm that the Six Sigma approach improves the quality of the credit card account opening process. So, the Six Sigma approach can account for a reduced number of keying-in errors, resulting in better data accuracy and improved customer satisfaction. Research limitations/implications The authors, in an attempt to render the study results more feasible for data collection, have chosen to focus on the process of the new accounts unit of the credit card department. Therefore, the authors have not taken into account the other units (e.g. transaction processing) of the same department. Practical implications The results of this study will be useful in persuading bank management to evaluate and implement the Six Sigma approach. Hence, this research will assist bank managers with replies to questions, such as: “What impact will Six Sigma have on process-centric improvement, such as the new accounts opening process of a credit card department?” Originality/value Within the literature on the Six Sigma practice, there is little research that focuses on the implementation of this particular toolset especially for credit card departments. This indicates a gap in the field. A new contribution to bridging that gap comes from the analysis of the results for the Six Sigma concept, which addresses the new accounts opening process.

Modern methods of the quality improvement and their application in managing of changes in a company

2018 ◽  
Vol 4 (10) ◽  
pp. 64-72
Author(s):  
Pavol Gejdos
Keyword(s):  
Quality Improvement ◽  
Six Sigma ◽  
Business Processes ◽  
Relevant Information ◽  
Correct Choice ◽  
Sigma Level ◽  
Continuous Quality ◽  
Modern Methods ◽  
Six Sigma Methodology ◽  
A Company

This article deals about the application of the Six Sigma methodology by using modern methods in various stages of the DMAIC improvement model. The change management of business processes in terms of quality is determined by the correct choice of methods and tools for reducing discrepancies and non-productive costs. The evaluation of selected processes of furniture production through defects per million opportunities, efficiency, capability and sigma level before the change and after the change in the quality process provides relevant information for ensuring continuous quality improvement. Implementation of assessing changes in the process is a source of information for continuous improvement of process performance. Keywords: Processes, quality improvement, Six Sigma, DMAIC, changes in processes.

A DMAIC Six Sigma approach to quality improvement in the anodising stage of the amplifier production process

2018 ◽  
Vol 35 (9) ◽  
pp. 1868-1880 ◽  
Author(s):  
Pallavi Sharma ◽  
Suresh Chander Malik ◽  
Anshu Gupta ◽  
P.C. Jha
Keyword(s):  
Quality Improvement ◽  
Production Process ◽  
Six Sigma ◽  
Shop Floor ◽  
Manufacturing Firm ◽  
Content Type ◽  
Root Cause ◽  
Six Sigma Methodology ◽  
Six Sigma Approach ◽  
Current Reality

Purpose The purpose of this paper is to study the anodising process of a portable amplifier production process to identify and eliminate the sources of variations, in order to improve the process productivity. Design/methodology/approach The study employs the define-measure-analyse-improve-control (DMAIC) Six Sigma methodology. Within the DMAIC framework various tools of quality management such as SIPOC analysis, cause and effect diagram, current reality tree, etc., are used in different stages. Findings High rejection rate was found to be the main problem leading to lower productivity of the process. Four types of defects were identified as main cause of rejections in the baseline process. Pareto analysis resulted in detection of the top defects, which were then analysed in details to find the root cause of the problem. Further study resulted in finding improvement measures that were discussed with the management before implementation. The process is sampled again to check the improvements, and control measures were established. Practical implications The study provides a framework for implementation of DMAIC Six Sigma methodology for a manufacturing firm. The results presented are based on the data collected from the shop floor. Results and findings of the study were implemented for quality improvement of the process. Originality/value The study is based on an original research conducted with the objective of quality improvement in the anodising process of the production process. Besides presenting an approach to DMAIC Six Sigma methodology, an application of the current reality tree tool for root cause analysis is presented, a tool used limitedly in the Six Sigma studies. The tool finds its uniqueness in its ability to address problems relating multiple factors than isolated factors.

scholarly journals Improving Energy Conservation Using Six Sigma Methodology at Faculty of Computer and Mathematical Sciences (FSKM), Universiti Teknologi Mara (UiTM), Shah Alam

2014 ◽  
Vol 2 (2) ◽  
pp. 52-68 ◽  
Author(s):  
Nur Hidayah binti Mohd Razali ◽  
Wan Mohamad Asyraf Bin Wan Afthanorhan
Keyword(s):  
Energy Consumption ◽  
Energy Conservation ◽  
Six Sigma ◽  
Electrical Energy ◽  
Electrical Energy Consumption ◽  
Pareto Chart ◽  
Mathematical Sciences ◽  
Six Sigma Methodology ◽  
Electrical Consumption ◽  
Six Sigma Approach

Electrical consumption is increasing rapidly in Malaysia due to the sustenance of a modern economy way of living. Recently, the Vice Chancellor of University Technology MARA, Tan Sri Dato’ Professor Ir Dr Sahol Hamid Abu Bakar has shown a great deal of concern regarding the high electrical energy consumption in UiTM’s main campus in Shah Alam. This study seeks to evaluate the factors that contribute to high electrical energy consumption in the Faculty of Computer and Mathematical Sciences (FSKM), UiTM using the Six Sigma methodology and to compare electrical energy consumptions before and after the EC (Energy Conservation) initiative campaign. Many companies worldwide continue to achieve improvements in business performance using the Six Sigma approach. The electrical consumption from January 2011 until December 2013 was analyzed using five stages of Six Sigma which is Define, Measure, Analyze, Improve and Control (DMAIC). The total electrical consumption for 2011 was 1, 648, 791 kwH (RM 514,422.79) and 1, 657, 808 kwH (RM 517, 236.10) in 2012 which is an increase of 0.5% (RM 2813.31 or 9017 kwH). From the results obtained, Pareto chart shows that air-conditioner (57%) is the major factor that contributes to high consumption of electricity, followed by lightings (22%), sockets (16%) and others (5%). The electrical consumption was almost doubled when the new semester begun. After the campaign, there was a reduction of 2% in electrical consumption. This study has successfully implemented Six Sigma methodology which involves a systematic DMAIC process to evaluate electrical consumption in FSKM.

An examination of changing patterns in Lean Six Sigma research

2019 ◽  
Vol 27 (7) ◽  
pp. 23-25
Keyword(s):  
Six Sigma ◽  
Keyword Search ◽  
Fixed Time ◽  
Lean Six Sigma ◽  
Integrated System ◽  
Content Type ◽  
Time Period ◽  
Changing Patterns ◽  
Six Sigma Methodology ◽  
Six Sigma Approach

Purpose The purpose of this study was to examine patterns in the research contributions from individuals in the field to detect whether they reflect the evolution of academic discussion concerning integration of Lean and Six Sigma methodology over a fixed time period. Design/methodology/approach Data was gathered from a keyword search of articles in the SCOBUS data base to determine the most frequent contributors in the areas of Lean, Six Sigma and Lean Six Sigma research. Searches were carried out over five-yearly intervals from 2000 to 2015 and the twenty-one top contributors in each time period were identified. Findings The findings show that research contributions have moved away from looking at the single methodologies of Lean and Six Sigma and towards research based on the integrated Lean Six Sigma approach. The analysis also suggested that researchers may be publishing papers using different methodologies in response to different challenges in selecting the most appropriate tools to meet the needs of the specific issues they are addressing rather than advocating a particular approach. Practical implications For organizations to optimize performance a flexible approach would be beneficial with consideration being given to the specific issue and the correct tools and methodology selected from an integrated system or from Lean or Six Sigma systems alone. Originality/value This paper has originality in its’ consideration of the patterns of research contributions over a fixed time period as a reflection of the shift in debate from exclusive Lean or Six Sigma approaches to a more integrated Lean Six Sigma system.

Pengendalian Kualitas Dengan Menggunakan Pendekatan Lean Six Sigma di PT. XYZ

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Khawarita Siregar ◽  
Khalida Syahputri ◽  
Rahmi M Sari ◽  
Farida Putri
Keyword(s):  
Six Sigma ◽  
Lead Time ◽  
Lean Six Sigma ◽  
Production Data ◽  
Lead Times ◽  
Total Production ◽  
Manufacturing Companies ◽  
Sigma Level ◽  
Market Product ◽  
Six Sigma Approach

Persaingan yang sangat kuat diantara perusahaan yang semakin ketat terhadap produk yang sejenis di dalam hal menghasilkan suatu produk pasar nasional maupun internasional untuk pemasaran produk. Berdasarkan data yang didapatkan dari pengamatan pendahuluan yang dilakukan di PT. XYZ bahwa untuk setiap periode produk yang dihasilkan adalah diantara 2.500-4.000 unit produk. Salah satunya berdasarkan data produksi produk berupa sprocket gear sebagai objek penelitian, didapatkan data produksi pada bulan Maret 2016 sebanyak 3.050 unit dengan jumlah kecacatan mencapai sebesar 15% dari jumlah produksi sekitar 458 unit produk cacat. Penerapan metode lean six sigma dengan mengurangi lead time dan cacat pada produk pada proses produksi. Hasil dengan menggunakan distribusi normal yang terdapat pada batas kontrol dan mempunyai nilai ARL= 200 dan UCL = 12,78, namun tingkat sigma perusahaan dalam produksi produk sprocket gear diperoleh nilai sigma sebesar 3. Hal ini bahwa setiap 1.000.000 kali produksi menunjukkan kemungkinan mengakibatkan kecacatan diantara 70.675,1055 ~ 70.675. Hal tersebut memperlihatkan bahwa tingkat sigma perusahaan masih berada jauh dibawah rata rata karena tingkat sigma dalam persaingan yang terjadi secara global diantara perusahaan manufaktur sejenis, yaitu 4,0-4,5 Sigma.   Very strong competition among companies that are increasingly strict on similar products in terms of producing a national and international market product for product marketing. Based on data obtained from preliminary observations conducted at PT. XYZ that for each period the product produced is between 2,500-4,000 units of product. One of them is based on product production data in the form of gear sprocket as the object of research, obtained production data in March 2016 as many as 3,050 units with a number of disabilities reaching 15% of the total production of about 458 units of defective products. Application of lean six sigma methods by reducing lead times and defects in products in the production process. The results using the normal distribution found at the control boundary and have ARL = 200 and UCL = 12.78, but the sigma level of the company in the production of gear sprocket products is obtained by sigma value of 3. This is that every 1,000,000 times the production shows the possibility disability between 70,675,1055 ~ 70,675. This shows that the company's sigma level is still far below the average because the sigma level in competition that occurs globally among similar manufacturing companies, namely 4.0-4.5 Sigma. Keyword: Quality Control, Lean Six Sigma Approach.

Sign in / Sign up

Export Citation Format

Share Document