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Optimization of CNC cutting parameters using design of experiment(DOE) and desirability function

Journal of Forestry Research 2018年第5期29卷 1423-1434页

作者： Ender Hazir Emine Seda Erdinler Kücük Hüseyin Koc Department of Forest Industrial Engineering Faculty of ForestryIstanbul University

In this study,2~5 （five factors at two-level factorial design） design of experiment was applied to investigate a set of optimal machining parameters to achieve a minimum surface roughness value for Abies nordmanniana.Wood specimens were prepared using different values of spindle speed,feed rate,depth of cut,tool radius,and cutting directions.Average surface roughness （R_z） values were applied using a stylus.The objectives were to：（1）obtain the effective variables of wood surface roughness;（2） analyze which of these factors had an impact on variability in the CNC machining process;（3） evaluate the optimal cutting values within the range of different cutting levels of machining parameters.The results indicate that the design of experiment（DOE） based on the desirability function approach determined the optimal machining parameters successfully,leading to minimum R_a compared to the observed value.Minimum surface roughness values of tangential and radial cutting directions were 3.58 and 3.21 μm,respectively.

关键词： Wood surface roughness Optimization CNC desirability function Pareto analysis

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A NEW desirability function BASED METHOD FOR MULTI-RESPONSE ROBUST PARAMETER DESIGN

A NEW DESIRABILITY FUNCTION BASED METHOD FOR MULTI-RESPONSE ...

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International Technology and Innovation Conference 2006

作者： ZONG Zhiyu HE Zhen KONG Xiangfen Industrial Engineering Department Tianjin University Tianjin 300072 China

＜正＞Parameter design is an effective way to improve product or process quality, and desirability function method is the most popular approach for multi-response parameter design optimization, however, the variations due to the noise factors and the fluctuation of the design parameters are ignored in this approach. Therefore a real robust solution can not be obtained using this method. Thus a new desirability function method is presented. The proposed method combines variances of the responses and the influence of the variations of the design parameters. The implementation and effectiveness of the proposed method are illustrated by an example from the literature, and the sensitivity of the response to the changes of controllable factors was analyzed to check if the solution is robust to the fluctuation of the design parameters. The result shows, compared with traditional desirability function approach, the variances obtained by the new desirability function based method are reduced, and the responses are more robust to the variations of the design parameters. As a result, the proposed method can yield better results than traditional desirability function approach.

关键词： desirability function multi-response robustness design parameter noise factor.

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A NEW desirability function BASED METHOD FOR MULTI-RESPONSE ROBUST PARAMETER DESIGN

A NEW DESIRABILITY FUNCTION BASED METHOD FOR MULTI-RESPONSE ...

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2006年中国机械工程学会年会暨中国工程院机械与运载工...

作者： ZONG Zhiyu, HE Zhen, KONG Xiangfen Industrial Engineering Department, Tianjin University, Tianjin 300072,China

Parameter design is an effective way to improve product or process quality, and desirability function method is the most popular approach for multi-response parameter design optimization, however, the

关键词： desirability function multi-response robustness design parameter noise factor.

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Relationship between Quality Loss function and desirability function

Relationship between Quality Loss Function and Desirability ...

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2011 2nd International Conference on Management Science and Engineering(MSE 2011)

作者： Cheng-Hsiung Chen 1 a Ful-Chiang Wu 1 b Ruei-Lung Lai 1 c and Chi-Hao Yeh 2 d 1 Department of Management and Information Technology Vanung University Chung-Li Taiwan 2 Department of Ind.Eng.and Manage. National Taipei University of Technology Taipei Taiwan Department of Management and Information Technology Vanung University Department of Ind.Eng.and Manage. National Taipei University of Technology

The quality loss function proposed by Taguchi establishes a financial measure of the user dissatisfaction with a product’s performance as it deviates from a target value in robust design.The desirabil

关键词： Quality loss function robust design desirability function double-exponential desirability function

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Fly Ash and Slag as Partial Replacement of Cement for the Synthesis of Low Carbon Cementitious Materials

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Journal of Renewable Materials 2023年第5期11卷 2491-2511页

作者： Yafei Hu Keqing Li Lujing Zheng Bin Han School of Civil and Resource Engineering University of Science and Technology BeijingBeijing100083China Key Laboratory of Ministry of Education of China for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing100083China Mining College Guizhou UniversityGuiyang550025China

Tailings known as solid waste are generated by the mining industry.The development of tailings as wet shotcrete aggregates has significant economic and environmental benefits.The fine particle size of the tailings results in a large consumption of traditional cement as a cementitious material and insignificant improvement in strength.Therefore,a composite cementitious system of cement and solid waste resources(fly ash and slag powder)is explored for this study.In this paper,the response surface methodology(RSM)is used to optimize the experimental design and a multivariate nonlinear response model with cement,fly ash and slag powder contents as variables are constructed,which can investigate the effect of the composite cementitious system on the strength of tailing wet shotcrete(TWSC).In addition,the information entropy(IE)is introduced and combined with the RSM to evaluate the composite cementitious system.Finally,the desirability function(DF)combined with RSM is used to optimize the composite cementitious system.The results show that the response model constructed in this paper has R^(2)=0.96 and P-value<0.01(the test result of the model is P-value<0.01),which indicates that the model has high reliability.The higher the content of slag powder and cement in the composite cementitious system,the higher the strength and comprehensive score of the TWSC.There is a critical value of fly ash content,which makes the maximum cementation of the composite cementing system.The optimal mix proportion of the composite cementitious system is obtained based on RSM-DF,which leads to the strength of TWSC at different curing time to achieve the expected index.

关键词： Tailings wet shotcrete composite cementitious system desirability function mix proportion optimization

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Early Rehabilitation After Craniosynostosis Surgery

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Computers, Materials & Continua 2022年第8期72卷 3899-3912页

作者： Dan Wang Lanzheng Bian Xiaoyan Hao Yiming Liu Jinyue Xia Jing Hu Department of Neurosurgery Children’s Hospital of Nanjing Medical UniversityNanjing210008China Department of Surgery Children’s Hospital of Nanjing Medical UniversityNanjing210008China Quality Management Office Children’s Hospital of Nanjing Medical UniversityNanjing210008China International Business Machines Corporation(IBM) NY10504USA Department of Rehabilitation Medicine Children’s Hospital of Nanjing Medical UniversityNanjing210008China

Craniosynostosis is a common congenital craniofacial deformity caused by premature ossification and closure of one or more cranial sutures.Craniosynostosis will not only affect the normal development of the skull,but also may cause a variety of complications,damage the nervous system,and cause long-term effects on the development of physical and mental health.Therefore,it is particularly important to provide new ideas for clinical treatment by studying the rehabilitation methods of craniosynostosis,and to improve the cure rate.To this end,this paper studies the early rehabilitation methods after craniosynostosis surgery and designs a comprehensive early rehabilitation process and corresponding comprehensive early rehabilitation measures after surgery.The comparative data also shows that after comprehensive early rehabilitation nursing measures,the duration of the postoperative swelling of sick children was reduced and the degree was significantly reduced,which alleviated the discomfort of sick children;and the time of sick children spent in ICU treatment and monitoring was reduced,and the separation time between sick children and their parents was shorten,is of great significance to the postoperative rehabilitation of craniosynostosis.In addition,the total cost of hospitalization was reduced accordingly,which greatly increased the satisfaction of patients.

关键词： Craniosynostosis early rehabilitation desirability function

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Preparation of ferric oxide-aluminium oxide carbon nanofiber nanocomposites for ultrasound-assisted dispersive magnetic solid phase extraction of 17-beta estradiol in wastewater

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Emerging Contaminants 2020年第1期6卷 162-171页

作者： Malesela William Lekota Anele Mpupa K.Mogolodi Dimpe Philiswa N.Nomngongo Department of Chemical Sciences(Former Applied Chemistry) University of JohannesburgDoornfontein CampusP.O.Box 17011Johannesburg2028South Africa DSI/Mintek Nanotechnology Innovation Centre-Water Node University of JohannesburgDoornfontein2028South Africa DSI/NRF SARChI Chair:Nanotechnology for Water University of JohannesburgDoornfontein2028South Africa

In this work,Fe3O4-Al2O3@CNFs nanocomposite was synthesised and used as a nanosorbent in the ultrasound-assisted dispersive magnetic solid phase extraction(UA-DMSPE)of 17-beta estradiol(E2)in wastewater samples.The quantification of E2 was achieved using high performance liquid chromatography coupled with diode array detector(HPLC-DAD).Various parameters affecting the efficiency of this sample preparation technique were optimised to achieve excellent sensitivity and high recoveries of E2.Response surface methodology was utilised for optimisation of these parameters.Using the optimised conditions,the linear dynamic range was achieved in the range of 0.1e1000 mgL^-1and the correlation coefficient was found to be 0.9981.The preconcentration factor,enrichment factor,limit of detection(LOD)and limit of quantification(LOQ)were 67,169,0.025 mgL^-1and 0.083 mg L1,respectively.The relative standard deviation(%RSD)for the intraday(n?10)and interday(n?5 working days)were 1.8%and 3.3%,respectively.The developed UA-DMSPE/HPLC-DAD method was applied for the preconcentration and determination of E2 in wastewater samples.The obtained results indicated that E2 was present in the wastewater samples.

关键词： Carbon nanofibers Ultrasound-assisted dispersive magnetic solid phase extraction 17 beta-estradiol Response surface methodology desirability function

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Effects of roller burnishing process parameters on surface roughness of A356/5%SiC composite using response surface methodology

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Advances in Manufacturing 2014年第4期2卷 303-317页

作者： Shashi Prakash Dwivedi Satpal Sharma Raghvendra Kumar Mishra Gautam Buddha University Greater NoidaGautam Budh NagarU.P.201310India

In this study, a simple roller burnishing tool was made to operate burnishing processes on A356/5%SIC metal matrix composite fabricated by electromagnetic stir casting under different parameters. The effects of burnishing speed, burnishing force and number of burnishing passes on the surface roughness and tribological properties were measured. Scanning electron microscopy （SEM） graphs of the machined surface with PCD （insert-10） tool and roller burnished surface with tungsten carbide （WC） roller were taken into consider- ation to observe the surface finish of metal matrix composites. The mechanical properties （tensile strength, hardness, duc- tility） of A356/5%SIC metal matrix composites were studied for both unburnished samples and burnished samples. The results revealed that the roller burnished samples of A356/ 5%SIC led to the improvement in tensile strength, hardness and ductility. In order to find out the effects of roller bur- nishing process parameters on the surface roughness of A356/ 5%SIC metal matrix composite, response surface methodol- ogy （RSM）（Box-Behnken design） was used and a prediction model was developed relevant to average surface roughness using experimental data. In the range of process parameters, the result shows that roller burnishing speed increases, and surface roughness decreases, but on the other hand roller burnishing force and number of passes increase, and surface roughness increases. Optimum values of burnishing speed （1.5 m/s）, burnishing force （50 N） and number of passes （2） during roller burnishing of A356/5%SIC metal matrix com- posite to minimize the surface roughness （predicted 1.232 μm） have been found out. There was only 5.03% error in the experimental and modeled results of surface roughness.

关键词： Burnishing speed Burnishing force Response surface methodology （RSM） Box-Behnkendesign desirability function

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