Experimental and numerical investigation on multi-pass laser cutting of natural fibre composite

Tamrin, Khairul Fikri; Moghadasi, Kaveh; Sheikh, Nadeem Ahmed

doi:10.1007/s00170-020-05121-3

Cited by 26 publications

(20 citation statements)

References 24 publications

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“…This results in the increase of temperature gradient, generating relatively higher thermal stress level after each subsequent pass. 35 However, there is no residual stress in the middle section which corresponds to the actual size of kerf width as evident in Figure 11. This is because elastic moduli (E 1 and E 2 ) have been significantly affected by temperature rise (equation (7)), leading to the loss of strength.…”

Section: Nodementioning

confidence: 90%

Multi-pass laser cutting of carbon/Kevlar hybrid composite: Prediction of thermal stress, heat-affected zone, and kerf width by thermo-mechanical modeling

Moghadasi

Tamrin

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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Numerical modeling offers considerable promise to reduce costs associated with trial-and-error process in the manufacturing industry. In laser cutting of fiber-reinforced composites, the developed thermal stress in the cut region has considerable inﬂuence on the application of the machined composite and the end product quality. Nevertheless, measurement of the thermal stress is quite challenging in practice. Here, an uncoupled thermo-mechanical finite element model is developed to accurately predict formation of heat-affected zone, kerf width, thermal field, and thermal residual stress of an anisotropic carbon/Kevlar fiber reinforced composite during multi-pass laser cutting process. A novel approach of element deletion incorporating temperature-dependent Hashin failure criteria and VUMAT subroutine is proposed. The study is carried out using Abaqus interlinked with Fortran compiler to define laser Gaussian beam (DFLUX subroutine) and material removal (VUMAT subroutine) for determining the temperature gradient and cut characteristics, respectively. The numerical results agree well with the experimental scanning electron micrographs of heat-affected zone and kerf width. In addition, residual temperature after subsequent pass results in greater temperature distribution and heat accumulation. It has also been established that the strength of composite gradually decays with the increase of temperature due to stiffness (elastic moduli) degradation in the area of the cutting zone, accelerating damage initiation in both fibers and matrix.

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Section: Nodementioning

confidence: 90%

Multi-pass laser cutting of carbon/Kevlar hybrid composite: Prediction of thermal stress, heat-affected zone, and kerf width by thermo-mechanical modeling

Moghadasi

Tamrin

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…Tamrin et al [ 34 ] examined the influence of P L and CS on performance measures such as MRR, and KW for PC. As a result, CS varied inversely with the work part thickness, and directly with the MRR.…”

Section: Quality Characteristics Of Laser Cutting Edgementioning

confidence: 99%

State-Of-The-Art and Trends in CO2 Laser Cutting of Polymeric Materials—A Review

et al. 2020

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Carbon dioxide (CO2) laser cutting finds one of its most relevant applications in the processing of a wide variety of polymeric materials like thermoplastics and thermosetting plastics. Different types of polymeric materials like polypropylene (PP), polymethyl methacrylate (PMMA), low- and high-density polyethylene (LDPE, HDPE), are processed by laser for different household as well as commercial products in the industry. The reason is their easy availability and economical aspect in the market. The problems associated with laser cutting include heat-affected zone (HAZ) generated on the cut surface, kerf width (KW), surface roughness (SR), dross formation, and striations formation. Furthermore, other related problems include taper cutting for deep parts and high-power consumption. The primary purpose of this work is a comprehensive literature review in CO2 laser cutting of polymeric materials. The influence of parametric variation on the cut quality is also explained. Cut quality in terms of KW, SR, HAZ, dross formation, and striations formation is analyzed by optimizing cutting variables like laser power (PL), cutting speed (CS), assist gas pressure (Pg), pulse frequency, nozzle type and its diameter, and stand-off distance (SOD). The effects of the laser cutting on the properties of different thermoplastics/thermosetting materials are also reported. However, this topic requires further studies on exploring the range of polymeric materials, and their optimal parameters selection to improve the cut quality. Therefore, the research gaps and future research directions are also highlighted in the context of CO2 laser cutting for polymeric materials.

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“…184,185 Tamrin et al. 186 conducted experimental and numerical investigation on multipass laser cutting of cotton fiber laminate. The optimum levels of all input parameters were found out by analysis of variance along with Taguchi design.…”

Section: Processing Of Nfrcsmentioning

confidence: 99%

Challenges on machining characteristics of natural fiber-reinforced composites – A review

Raj

Dhas

Jesuthanam

2020

Journal of Reinforced Plastics and Composites

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The emerging “green” economy is based on energy efficiency, renewable food stocks in polymeric products, industrial processes that reduce carbon emissions, and recyclable materials. Natural fiber is a type of renewable source and a new generation of reinforcements and integrators for polymer-based materials. Because of its advantages over synthetic fibers, the use of natural fibers as reinforcements in composite materials has become important in recent years. To meet certain design criteria, natural fiber-reinforced composites impose certain secondary operations during assembly. Limited literature is available only in connection with the processing of natural fiber-reinforced composites. This paper analyzes a comprehensive review of the natural fiber-reinforced composite processing literature along with the challenges during processing.

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Experimental and numerical investigation on multi-pass laser cutting of natural fibre composite

Cited by 26 publications

References 24 publications

Multi-pass laser cutting of carbon/Kevlar hybrid composite: Prediction of thermal stress, heat-affected zone, and kerf width by thermo-mechanical modeling

Multi-pass laser cutting of carbon/Kevlar hybrid composite: Prediction of thermal stress, heat-affected zone, and kerf width by thermo-mechanical modeling

State-Of-The-Art and Trends in CO2 Laser Cutting of Polymeric Materials—A Review

Challenges on machining characteristics of natural fiber-reinforced composites – A review

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