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Study on Optimization of Laser Drilling Parameters with Response Surface Methodology

Author: TanBo
Tutor: WangHaiLin
School: Huazhong University of Science and Technology
Course: Physical Electronics
Keywords: Laser drilling Technological parameters Response Surface Methodology (RSM)
CLC: TN249
Type: Master's thesis
Year: 2011
Downloads: 88
Quote: 0
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Abstract


Laser processing is an industrial-process method of high efficiency, which is widely used on drilling, cutting, welding and so on. Due to the individuality of the laser, the outcome of the same lasers under the same conditions may be different. Therefore, the conclusion of deduction of the theory is unpredictable to the experiment, namely, the parameters used by such a laser is unstable. The purpose of the dissertation is trying to find a method that is of universality can be suitable to every laser to generate optimal parameters.Firstly, based on the theory, combining with the principle of laser drilling and mechanism of interaction between laser and material, investigating several models of references, the dissertation formulates the deviation of thermal transmission in the material processed by laser. A physical model of material removal is gained finally.Next from the practical circumstance of laser instrument, the dissertation lays emphasis on introducing one of the designs of experiment (DOE), response surface methodology (RSM). Dealing with the data of experiment designed beforehand by using such a method, analyzing the effect of influencing factors (such as pulse duration and repetition rate), and the dissertation gives some simulated figures about results. Hence, the optimal parameters that the laser instrument can generate on drilling can be found from the figures.The article discusses mechanism of interaction between laser and material theoretically, analyzing the data of experiment designed by such method from practical laser instrument. Most importantly, it can point out the optimal parameters of laser instrument generate on drilling. Researching results give some references on mechanism research of laser drilling and promoting the quality and efficiency in laser drilling. And such a method is applying feasible reference on laser engineering in future, especially on laser processing technology.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Laser technology, the maser > Laser applications
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