Multi‐response optimization of CFRP laser milling process based on response surface methodology

Genna, Silvio; Tagliaferri, Flaviana; Papa, Ilaria; Leone, Claudio; Palumbo, Biagio

doi:10.1002/pen.24560

Cited by 26 publications

(18 citation statements)

References 25 publications

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“…Consequently, the process optimisation should take into account all these parameters at the same time. In order to optimise the process conditions, the Master Response Optimisation (MRO) procedure, proposed by Kros and Mastrangelo in [40] and successfully applied in [41,42] , was adopted. MRO method adopts the equations obtained by RSM and finds combinations of input variables (i.e.…”

Section: Process Optimisationmentioning

confidence: 99%

Experimental investigation and optimisation of laser direct part marking of Inconel 718

Leone

Bassoli

Genna

et al. 2018

Optics and Lasers in Engineering

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Many industries need product identification; laser marking is suitable to produce any kind of symbol, data matrix or bar code on parts. Consequently, the most important requirement for marking acceptance is, doubtless, the mark readability. The present study deals on the effect of process parameters on the laser marking of Inconel 718, with the aim to find a relation between the process parameters and mark characteristics in term of both mark geometry and readability. To this aim, laser markings, under different process conditions, were performed on Inconel 718 sheets, adopting a 30 W Q-switched Yb:YAG laser. The mark geometry was acquired by a 3D surface profiling system. Optical microscopy and SEM analysis were also performed on groove sections. In order to evaluate the readability of the marks, Weber contrast was calculated and adopted. The mark characteristics have been investigated by mean of statistical methodology (ANalysis of VAriance and Response Surface Method) and related to the process parameters. Furthermore, Master Response Optimisation methodology was adopted to individuate the optimal process conditions. It was found that mark geometry and the Weber contrast are mainly affected by the average power and the energy input per mark-length. Moreover, operative conditions allowing for maximum readability, yet without excessive increase in burr height, were also determined.

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Section: Process Optimisationmentioning

confidence: 99%

Experimental investigation and optimisation of laser direct part marking of Inconel 718

Leone

Bassoli

Genna

et al. 2018

Optics and Lasers in Engineering

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“…Whereas interactions, unobserved in Plackett and Burman’s experimental methods and Box–Behnken has less coverage than in the case of CCD [ 28 , 29 ]. Therefore, CCD has been widely used in the fields of engineering and science [ 29 , 30 , 31 , 32 , 33 , 34 ]. The CCD consists of three main parts and of 2 k + 2 k + m runs.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Optimum Process Parameters Fabricated by Direct Laser Interference Patterning Based on Central Composite Design

et al. 2020

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In this study, we report on the optimization of the direct laser interference patterning process by applying the design of experiments approach. The periodic line-like microstructures of a 8.50 µm spatial period were fabricated by a two-beam interference setup with nanosecond laser pulses, varying laser fluence, pulse overlap, and hatch distance. Central composite design with three factors and five levels was implemented to optimize the required number of experiments. The experimental and numerical results show the impact of various structuring process parameters on surface uniformity. The responses measured are the structure height, height error, and waviness of the pattern. An analysis of the microstructures on the patterned surface was conducted by confocal microscopy and scanning electron microscopy. A 3D-characterization method based on morphological filtering, which allows a holistic view of the surface properties, was applied, and a new qualification scheme for surface microstructures was introduced. Empirical models were also developed and validated for establishing relationships between process parameters and performance criteria. Multi-objective optimization was performed to achieve a minimal value of structure height errors and waviness.

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“…[3,4], due to its good strength to weight ratio, ease of fabrication of complex shapes, low cost, ease of recycling, etc. [5]. Two different types of plastics, such as thermoplastics and thermosets, are extensively used to create industrial products.…”

Section: Introductionmentioning

confidence: 99%

Parametric Studies on Transmission Laser Welding of Acrylics

Rudrapati¹

2020

Acrylate Polymers for Advanced Applications

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Due to limitations of injection molding of polymer/plastic materials, complex plastic parts are often assembled from two or more injection-molded components. Joining of polymers can be achieved by chemical-based technologies and thermal methods such as welding. Welding technique is one of the important manufacturing routes that can be used to refine product design and reduce production cost. Plastic welding processes typically involve heating the joining faces to induce localized melting and subsequently applying pressure to cause molecular diffusion at the molten interface, which produces a solid weld upon cooling. The need for an effective welding process that is fast, accurate, and with no relative part movement has fueled the development of laser-transmission welding (LTW) technology. LTW is an innovative joining process for acrylate materials. The quality of weld highly depends on correct selection of process parameters in LTW. The systematic study and analysis are required to conduct LTE process economically and efficiently. In the present chapter, current prospects of applications of acrylates and joining of them using LTW has been analyzed. The main emphasis has been given to analyze the variations of quality performance characteristics with varying input welding factors and concluding remarks has been drawn from present work. From this study, it is observed that acrylics are future innovative industrial materials, which need to be joined to create complex features on them. Welding of acrylics using LTW to achieve better and more economical weld performance is still under continuous research by scientists/industrialists.

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Multi‐response optimization of CFRP laser milling process based on response surface methodology

Cited by 26 publications

References 25 publications

Experimental investigation and optimisation of laser direct part marking of Inconel 718

Experimental investigation and optimisation of laser direct part marking of Inconel 718

Prediction of Optimum Process Parameters Fabricated by Direct Laser Interference Patterning Based on Central Composite Design

Parametric Studies on Transmission Laser Welding of Acrylics

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