Process parametric optimization in drilling of CFRP composites using GRA method

Barik, Tarakeswar; Jena, Sourav; Gahir, Shivraj; Pal, Kamal; Pattnaik, Sanat Kumar

doi:10.1016/j.matpr.2020.04.220

Cited by 15 publications

(4 citation statements)

References 28 publications

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“…Barik et al also found that axial thrust was the most effective feature in predicting the delamination factor. 54 The burr structures observed in Figure 10 indicate delamination-based burr formation. Delamination burrs occur when different layers of the composite material separate during the drilling process.…”

Section: Delamination and Burr Formationmentioning

confidence: 96%

Reducing delamination risk with response surface methodology-supported drilling analysis for Nomex® aramid fiber composites

Yarar

2023

Journal of Composite Materials

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This article presents a comprehensive experimental investigation into the drilling behavior of Nomex®, a type of aramid fiber. The study specifically examines the impact of various cutting parameters and drill bit types on drilling outcomes. While Nomex® offers many advantages, difficult chip evacuation during drilling of aramid fiber composites can lead to surface defects and delamination. The research aims to explore how drilling parameters—such as spindle speed, feed rate—and four distinct drill bit types affect drilling performance. The analysis encompasses factors such as thrust force, torque, and surface roughness, studied under different drilling conditions and with various drill bit types. Moreover, the research assesses peeling and push-out delamination factors to gain insights into drill bit and coating characteristics. An examination of burr and chipping further enhances the comprehension of drilling performance. To determine the most effective drilling conditions, the study employs multi-response optimization. The optimal drilling performance is achieved with a combination of a 0.1 mm/rev feed rate, 1402.82 r/min spindle speed, and HSS-TiN drill type. This configuration successfully integrates responses, resulting in a composite desirability value of 0.95.

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Section: Delamination and Burr Formationmentioning

confidence: 96%

Reducing delamination risk with response surface methodology-supported drilling analysis for Nomex® aramid fiber composites

Yarar

2023

Journal of Composite Materials

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“…Literatürde FML'nin delinebilirliğini değerlendirmek üzere Ekici vd. CARALL kompozitin delinmesinde delaminasyon oluşumunu farklı hesaplama yaklaşımlarını kullanarak incelemişlerdir [13]. Ekici vd.…”

Section: Introductionunclassified

Elyaf Metal Tabakalı (FML) Kompozitlerin Delinmesinde Ortalama İtme Kuvveti ve Delaminasyon Faktörü Üzerinde İşleme Parametrelerinin Etkilerinin Değerlendirilmesi ve ARAS Yöntemiyle Çok Kriterli Optimizasyonu

Motorcu,

Ekici,

Uzun

2024

İstatistik Ve Uygulamalı Bilimler Dergisi

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Bu çalışmada bir Elyaf Metal Laminat (FML) türü olan Karbon Elyaf Takviyeli Alüminyum Laminat (CARALL) kompozitin delinmesinde işleme parametrelerinin ortalama itme kuvveti ve delaminasyon faktörü üzerine etkileri araştırılmış ve çok kriterli olarak optimize edilmiştir. İşlenebilirlik deneyleri Taguchi Metodu L18 (12x23) ortogonal diziye göre gerçekleştirilmiştir. İşlenebilirlik deneyleri kontrol faktörleri olarak seçilen kesici takım geometrisi, kesme hızı ve ilerleme miktarı işleme parametrelerinin farklı seviyelerinde kuru olarak yapılmıştır. Bu çalışmanın iki temel motivasyonu bulunmaktadır: birincisi ortalama itme kuvveti ve delaminasyon faktörü üzerinde kontrol faktörlerinin etkilerini ayrı ayrı belirlemek ikincisi ise aynı anda minimum ortalama itme kuvveti ve delaminasyon faktörünü sağlayan optimum işleme parametreleri seviyelerini çok kriterli optimizasyon yöntemi ile belirlemektir. İşleme parametrelerinin çok kriterli optimizasyonu ARAS tekniği ile gerçekleştirilmiştir. ARAS tekniği için ağırlıklandırılmış karar matrislerinin hesaplanmasında kullanılan ağırlıklar Entropi Metodu ile belirlenmiştir. Gerçekleştirilen çok kriterli optimizasyon sonucunda CARALL’ın delinmesinde aynı zamanda minimum ortalama itme kuvveti ve delaminasyon faktörü değerlerinin elde edilmesinde işleme parametrelerinin etki sırası takım geometrisi (%87.60), ilerleme miktarı (%8.39) ve kesme hızı (%0.28) şeklinde olmuştur. Minimum ortalama itme kuvveti ve delaminasyon faktörü değerlerinin elde edilmesi için işleme parametrelerinin optimum seviyeleri standart geometrili takım, 100 m/dak kesme hızı ve 0.06 mm/dev ilerleme miktarı olarak belirlenmiştir.

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“…The delamination factor has always been considered the most vital among the defects that occurred as it directly influences the bearing strength of the joint [8]. It is categorized as pull-out and push-out delamination that occurred at the hole entry and hole exit respectively where weak inter-laminar force resistance exists [9].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the input parameters setting for least hole defects while drilling CFRP laminates by multi-objective optimization on the basis of ratio analysis (MOORA) method

Barik

Parida

Pal

2023

J. Phys.: Conf. Ser.

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Carbon fiber reinforced plastic laminates have been kept under the category of hard-to-machine materials despite having some unmatchable properties like high strength, stiffness, corrosion resistance, etc. The heterogeneous nature of the material makes the essential secondary machining process a challenging task to perform. Drilling is always considered the effective way to drill holes necessary for the assembling purpose in structure building. Though, drilling the CFRP laminates critically affected by the abrasiveness of the reinforcing fibers eventually produces various defects. In this particular experimental analysis, a decision-making model associated with the Multi-objective optimization of ratio analysis (MOORA) method has been used in selecting the best possible parameter setting for minimizing defects. The results suggested that this method is found to be effective in solving the real-world problem of selecting the optimized parameter setting in drilling CFRPs. The best possible combination of low point angle, high speed, and low feed rate produces the least drilled hole defects.

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Process parametric optimization in drilling of CFRP composites using GRA method

Cited by 15 publications

References 28 publications

Reducing delamination risk with response surface methodology-supported drilling analysis for Nomex® aramid fiber composites

Reducing delamination risk with response surface methodology-supported drilling analysis for Nomex® aramid fiber composites

Elyaf Metal Tabakalı (FML) Kompozitlerin Delinmesinde Ortalama İtme Kuvveti ve Delaminasyon Faktörü Üzerinde İşleme Parametrelerinin Etkilerinin Değerlendirilmesi ve ARAS Yöntemiyle Çok Kriterli Optimizasyonu

Optimizing the input parameters setting for least hole defects while drilling CFRP laminates by multi-objective optimization on the basis of ratio analysis (MOORA) method

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