Modelling thermal effects in machining of carbon fiber reinforced polymer composites

Santiuste, Carlos; Díaz-Álvarez, José; Soldani, X.; Miguélez, H.

doi:10.1177/0731684413515956

Cited by 36 publications

(25 citation statements)

References 28 publications

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“…The authors explored the ability of numerical modeling based on finite elements for the simulation of temperature enhancement during cutting. The previously mentioned model of orthogonal cutting was modified in order to account for thermal effects [53]. The model is used for the prediction of intralaminar damage, delamination and thermal damage in terms of the temperature level beneath the machined surface.…”

Section: Thermal Effectsmentioning

confidence: 99%

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4. Numerical modeling of LFRP machining

Miguélez¹,

Feito²,

Santiuste³

et al. 2015

Machinability of Fibre-Reinforced Plastics

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This chapter presents some considerations for modeling long fiber reinforced polymer (LFRP) composites machining. The composite components are usually made to the desired product's final size. However, some machining operations are required to achieve dimensional tolerance and assembly requirements. LFRP composites are considered difficult to cut due to the presence of hard fibers, being especially vulnerable to machining-induced damage. Numerical modeling of machining can help in analyzing the process; however, it is a relatively new approach to the study of composite cutting. In this chapter, main contributions dealing with LFRP modeling of cutting are summarized. Recent contributions by authors in this field are included, giving the reader information on the development of numerical models that cover mechanical and thermal aspects of different cutting processes. IntroductionLong fiber reinforced polymer (LFRP) composites have been extensively used in structural components. Their attractive properties -fatigue and corrosion resistance combined with light weight, high specific stiffness and strength -made this family of materials suitable for a wide range of applications in aeronautical, automotive, marine and sporting industries.The problems associated with precision and efficiency in cutting LFRP composites have become important issues in the manufacturing field. Although the components are usually made to the final size of the desired product, machining processes (mainly trimming, milling and drilling) are needed to achieve dimensional tolerance and assembly requirements. LFRP composites are considered difficult to cut materials due to the presence of hard fibers, being especially vulnerable to damage, mainly delamination, fiber pull-out and matrix thermal degradation [1].Machining-induced damage has significant importance in industrial applications; for instance, poor hole quality in composite drilling accounts for an estimated 60 % of all parts rejection. The workpiece's surface integrity is critical for the subsequent assembly stage and, of course, during the service life of the component. In fact, recent calls for international projects deal with this unsolved problem: drilling holes in high responsibility composite components, hole quality improvement, non-destructive inspection techniques and other aspects showing the importance of high value machining operations previous to final assembly of the components.

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Section: Thermal Effectsmentioning

confidence: 99%

“…This behavior is quite different from that observed in metal cutting with large amounts of plastic work conBrought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 6/3/15 3:25 PM Tab. 4.6: Thermal properties of composite [53].…”

Section: Thermal Effectsmentioning

confidence: 99%

4. Numerical modeling of LFRP machining

Miguélez¹,

Feito²,

Santiuste³

et al. 2015

Machinability of Fibre-Reinforced Plastics

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“…The use of wedge elements (prismatic element with triangular section) minimizes the dependence of the results with mesh orientation. A mesh sensibility analysis was carried out in previous work by the authors [19,20]). Therefore, it was set a minimum element size around the cutting zone equal to 7 lm showing reasonably accuracy and computational cost.…”

Section: Elastic Properties Ultimate Stressmentioning

confidence: 99%

“…Two different models were developed: 2D for isotropic behaviour and 3D allowing the simulation of different orientations of the osteons. In the second model recent results obtained by the authors in composite cutting were considered, such as the influence of fibre orientation on chip morphology [19] and the prediction of temperature distribution [20]. Interesting conclusions were obtained, finding a strong influence of the anisotropy in chip morphology and temperature.…”

Section: Introductionmentioning

confidence: 99%

The influence of anisotropy in numerical modeling of orthogonal cutting of cortical bone

Santiuste

Rodríguez-Millán

Giner

et al. 2014

Composite Structures

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Cutting operations in bone are involved in surgical treatments in orthopaedics and traumatology.The importance of guaranteeing the absence of damage in the living workpiece is equivalent in this case to ensuring surface quality. The knowledge in this field is really far from the expertise in industrial cutting of mechanical components. Modeling of bone cutting is a challenge strongly dependent on the accurate modeling of mechanical behaviour of the bone. This paper focuses on modeling of orthogonal cutting of cortical bone. The intrinsic anisotropic nature of the cortical bone that makes it comparable to a compos-ite material is taken into account. The influence of anisotropy is analysed comparing this behaviour with an isotropic approach. It is shown that both chip morphology and temperature are affected by the anisot-ropy of the cortical bone that acts as a workpiece.

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“…However, a still important problem of fiber-optic pyrometers yet to solve is the difficulty of measuring low temperature values with both high accuracy and a moderate speed. This disadvantage limits their use when temperature measurement of polymer composites [ 12 ] or low-emissivity metals is required [ 13 ]. These materials are machined using lower speeds which generate lower radiation, thus reducing the temperature of the process.…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Pyrometer with Optically Powered Switch for Temperature Measurements

Vázquez

Pérez-Prieto

López-Cardona

et al. 2018

Sensors

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We report the experimental results on a new infrared fiber-optic pyrometer for very localized and high-speed temperature measurements ranging from 170 to 530 °C using low-noise photodetectors and high-gain transimpedance amplifiers with a single gain mode in the whole temperature range. We also report a shutter based on an optical fiber switch which is optically powered to provide a reference signal in an optical fiber pyrometer measuring from 200 to 550 °C. The tests show the potential of remotely powering via optical means a 300 mW power-hungry optical switch at a distance of 100 m, avoiding any electromagnetic interference close to the measuring point.

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Modelling thermal effects in machining of carbon fiber reinforced polymer composites

Cited by 36 publications

References 28 publications

4. Numerical modeling of LFRP machining

4. Numerical modeling of LFRP machining

The influence of anisotropy in numerical modeling of orthogonal cutting of cortical bone

Fiber-Optic Pyrometer with Optically Powered Switch for Temperature Measurements

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