scholarly journals Optimization of Laser Transmission Joining Process Parameters on Joint Strength of PET and 316 L Stainless Steel Joint Using Response Surface Methodology

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Shashi Prakash Dwivedi ◽  
Satpal Sharma
Keyword(s):  
Stainless Steel ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Process Parameters ◽  
Laser Power ◽  
Joint Strength ◽  
Steel Joint ◽  
316 L Stainless Steel ◽  
Develop Mathematical Model ◽  
Joining Process

The objective of the present work is to study the effects of laser power, joining speed, and stand-off distance on the joint strength of PET and 316 L stainless steel joint. The process parameters were optimized using response methodology for achieving good joint strength. The central composite design (CCD) has been utilized to plan the experiments and response surface methodology (RSM) is employed to develop mathematical model between laser transmission joining parameters and desired response (joint strength). From the ANOVA (analysis of variance), it was concluded that laser power is contributing more and it is followed by joining speed and stand-off distance. In the range of process parameters, the result shows that laser power increases and joint strength increases. Whereas joining speed increases, joint strength increases. The joint strength increases with the increase of the stand-off distance until it reaches the center value; the joint strength then starts to decrease with the increase of stand-off distance beyond the center limit. Optimum values of laser power, joining speed, and stand-off distance were found to be 18 watt, 100 mm/min, and 2 mm to get the maximum joint strength (predicted: 88.48 MPa). There was approximately 3.37% error in the experimental and modeled results of joint strength.

Modelling and multi-response optimization of wire electric discharge machining parameters using response surface methodology and grey–fuzzy algorithm

2015 ◽  
Vol 231 (10) ◽  
pp. 1760-1774 ◽  
Author(s):  
Bikash Choudhuri ◽  
Ruma Sen ◽  
Subrata Kumar Ghosh ◽  
Subhash Chandra Saha
Keyword(s):  
Stainless Steel ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Process Parameters ◽  
Electric Discharge ◽  
Machining Parameters ◽  
Electric Discharge Machining ◽  
Wire Electric Discharge Machining ◽  
Grey Relational ◽  
Stainless Steel 316

Wire electric discharge machining is a non-conventional machining wherein the quality and cost of machining are influenced by the process parameters. This investigation focuses on finding the optimal level of process parameters, which is for better surface finish, material removal rate and lower wire consumption for machining stainless steel-316 using the grey–fuzzy algorithm. Grey relational technique is applied to find the grey coefficient of each performance, and fuzzy evaluates the multiple performance characteristics index according to the grey relational coefficient of each response. Response surface methodology and the analysis of variance were used for modelling and analysis of responses to predict and find the influence of machining parameters and their proportion of contribution on the individual and overall responses. The measured values from confirmation experiments were compared with the predicted values, which indicate that the proposed models can be effectively used to predict the responses in the wire electrical discharge machining of AISI stainless steel-316. It is found that servo gap set voltage is the most influential factor for this particular steel followed by pulse off time, pulse on time and wire feed rate.

Laser Machining of Die Steel (EN-31): An Experimental Approach to Optimise Process Parameters using Response Surface Methodology

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
A. R. Patel ◽  
S. N. Bhavsar
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Process Parameters ◽  
Laser Power ◽  
Cutting Speed ◽  
Gas Pressure ◽  
Confirmatory Test ◽  
Taper Angle ◽  
Die Steel ◽  
En 31

Experiments were performed based on response surface methodology (RSM) to investigate the process parameters effect on the features of hole geometry. Cutting speed (of 500-1000 mm/min), laser power (of 2000-4000 W), frequency (of 800-2000 Hz), duty cycle (of 75-95%), and gas pressure (of 0.05-0.15 bar) were considered as variable parameters. Deviation in the dimension of entrance and exit holes, heat affected zone (HAZ) on the upper & lower edge, and roughness were the output to analyse the cutting quality of 14 mm thick normal and heat-treated (HT) EN-31 die steel using 4 kW CO2 laser. For untreated plate, minimum taper angle was achieved with low cutting speed, higher laser power, and gas pressure. Higher cutting speed, low laser power, and higher gas pressure result in the minimum HAZ. For the HT plate, the mid-range of parameters results in the minimum taper angle and HAZ. An optimised model was developed, and the confirmatory test gives roughness up to 0.27 microns and it shows good agreement with the mathematical model. At the cross-section of holes, striation pattern, resolidified layer, and corner qualities were visually inspected. Surface damage near the cutting edge was observed using scanning electron microscopy.

Modeling and Optimization of Mask Assisted Laser Transmission Micro Joining Process

2014 ◽  
Vol 620 ◽  
pp. 10-16
Author(s):  
Zhen Guan Zhao ◽  
Hui Xia Liu ◽  
Ye Cai ◽  
Yan Wei Wu ◽  
Xiao Wang
Keyword(s):  
Mathematical Model ◽  
Response Surface Methodology ◽  
Experimental Design ◽  
Process Parameters ◽  
Joint Strength ◽  
Slit Width ◽  
Joint Width ◽  
The Mathematical Model ◽  
The Relationship ◽  
Joining Process

This article uses semiconductor laser for mask assisted laser transmission micro joining PET and PET with clear weld absorbents, the mask slit width is 0.3mm, using CCD to plan experimental design. The mathematical model of joining process parameters with joint strength and joint width was established using response surface methodology. Experimental verification was also done. The actual joint width was compared to mask slit width and the process parameters were optimized. The results show that the mathematical model can response the relationship between process parameters and joining quality, the mask can effectively control the joint width, reasonable process parameters can obtain high-precision, high-intensity joining quality.

Optimization of Laser Transmission Joint between PET and Titanium Using Response Surface Methodology

2010 ◽  
Vol 154-155 ◽  
pp. 1119-1124
Author(s):  
Xin Hua Song ◽  
Xiao Wang ◽  
Pin Li ◽  
Zhen Kai Xu ◽  
Kai Wang ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Mathematical Models ◽  
Response Surface ◽  
Process Parameters ◽  
Near Infrared ◽  
Dissimilar Materials ◽  
Main Effect ◽  
Encapsulation Process ◽  
Joining Process ◽  
Pet Films

Laser transmission joint between biocompatible, dissimilar materials have the potential for application in biomedical and their encapsulation process. This paper is devoted to laser transmission joint between 0.1mm thick PET films and 0.1mm thick Titanium using near-infrared diode lasers. Response surface methodology (RSM) is used to develop mathematical models between the joining process parameters. The developed mathematical models are tested for adequacy using analysis-of-variance (ANOVA) method. In addition, the main effect of each parameter and the interaction effects with other process parameters are analyzed. Finally, the experimental results agree with those predicted indicate that the developed mathematical models can predict the responses adequately.

Optimization of Laser Transmission Joining Process Parameters for Thermoplastic Using Response Surface Methodology

2011 ◽  
Vol 48 (7) ◽  
pp. 071408
Author(s):  
姜敏凤 Jiang Minfeng ◽  
许贞凯 Xu Zhenkai ◽  
刘会霞 Liu Huixia ◽  
李品 Li Pin ◽  
宋新华 Song Xinhua ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Process Parameters ◽  
Joining Process

Optimization of Laser Transmission Joining Process between Different Thermoplastics using Response Surface Methodology

2011 ◽  
Vol 291-294 ◽  
pp. 1433-1439 ◽  
Author(s):  
Zhen Kai Xu ◽  
Kai Wang ◽  
Min Feng Jiang ◽  
Yang Hu ◽  
Cheng Zhang ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Process Parameters ◽  
Laser Power ◽  
Scanning Speed ◽  
Optical Microscope ◽  
Main Process ◽  
Pet Film ◽  
Joint Quality ◽  
Clamping Pressure

In order to determine the optimum joint conditions, four key process parameters affecting the joint quality of laser transmission joint of 1mm thick PET film and PC film，namely，laser power, scanning speed, clamping pressure and scanning number are optimized by response surface methodology in this paper. The interaction effect of main process parameters on joint quality is researched. The samples are tested using a multi-axis microtester in order to determine joint strength. The morphology of the joining area is observed with an optical microscope. Design Expert analysis indicates that the best laser power, scanning speed, clamping pressure and scanning number on joint quality were 35.7W, 5.0mm/s, 0.75MPa, 3, respectively. Finally, the experimental results are consistent with the predicted, which illustrates that the developed mathematical models can predict the responses adequately.

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