Kompakt laminat kompozit malzemenin tungsten karbür takımlarla delinmesinde delaminasyon faktörünün değerlendirilmesi

Öz

Delaminasyon faktörü, kompakt laminat kompozit malzemelerin (KLK) delinmesinde oluşan yüzey hasarlarının değerlendirilmesi için önemli bir parametredir. Bu çalışmada, ön delik delinmiş KLK malzemenin yeni (T1) ve aşınmış tungsten karbür parmak freze takımlarla (T2) delinmesinde delik çıkış bölgelerinde oluşan delaminasyonlar incelenmiş ve kontrol faktörlerinin delaminasyon faktörü üzerindeki etkileri araştırılmıştır. KLK iş parçaları üç farklı kesme hızı (178, 250 ve 350 m/dk), üç farklı ilerleme miktarı (0.07, 0.111 ve 0.156 mm/dev) ve iki farklı delme tipi (doğrusal delik delme ve kademeli delik delme) ile CNC tezgâhında delinmişlerdir. Taguchi Metodu kullanılarak L18 (21x32) ortogonal diziye göre deneysel çalışma gerçekleştirilmiş ve kontrol faktörlerinin optimum seviyeleri belirlenmiştir. Ayrıca, delaminasyon faktörü üzerinde delme parametrelerinin etkilerini gösteren matematiksel modeller geliştirilmiştir. T1 takımlarla delmede delaminasyon faktörü ortalaması 1.036 olarak hesaplanmış iken T2 takımlarla delmede delaminasyon faktörü ortalaması 1.473 bulunmuştur. Kontrol faktörlerinin delaminasyon faktörü üzerindeki etkilerini belirlemek için varyans analizi (ANOVA) uygulanmıştır. T1 takımlarla delmede delaminasyon faktörü üzerinde en etkili parametreler sırasıyla kesme hızı (%65.30), delme tipi (%11.63) ve ilerleme miktarı (%8.16) olmuş iken kullanılmış T2 takımlarla delmede bu sıralama ilerleme miktarı (%58.79), delme tipi (%18.38) ve kesme hızı (%3.43) şeklinde olmuştur. Sonuç olarak; KLK malzemeyi aşınmış takımlarla delmede maksimum deforme olmuş çap daha büyük çıkmıştır.

Anahtar Kelimeler

• Kompakt laminat kompozit,Delik delme,Delaminasyon faktörü,Düz parmak freze takım,Taguchi metodu

Evaluation of the delamination factor for drilling of compact laminate composite material with tungsten carbide tools

Abstract

Delamination factor is an important parameter for evaluating the surface damage in the drilling of compact laminate composites (CLC). In this study, delamination occurred in the hole exit region was studied and the effects of control factors on delamination factor were investigated in the drilling of pre-drilled CLC materials with new (T1) and worn (T2) tungsten carbide flat end mill cutting tools. CLC workpieces are drilled on CNC machine at three different cutting speed (178, 250 and 350 m/min), three different feed rate (0.07, 0.111 and 0.156 mm/rev) and two different drilling type (linear drilling and peck drilling). An experimental study has been performed according to L18 (21x32) orthogonal array using Taguchi method and the optimum levels of control factors are determined. In addition, predictive equations were developed showing the effects of drilling parameters on delamination factor. Delamination factor calculated with an average of 1.036 in drilling T1 tools while delamination factor was measured with an average of 1.473 in drilling T2 tools. Analysis of variance (ANOVA) was applied to determine the effects of control factor on the delamination factor. The most influential parameters on delamination factor in drilling with T1 tools has been the cutting speed (65.30%), type of drilling (11.63%) and feed rate (8.16%) when the cutting speed (58.79%), drilling type (18.38%) and feed rate (3.43%) has been the most influential parameters on delamination factor in drilling with T2 tools, respectively. As a result; higher maximum deformed diameter was obtained in the drilling CLC material with worn tools.

Keywords

• Compact laminate composite,Drilling,Delamination factor,Flat end mill tool,Taguchi method

References

1. Şahin Y. İmal Usulleri. Ankara, Türkiye, Gazi Kitabevi, 2003.
2. Davim JP, Reis P. “Drilling carbon fiber reinforced plastics manufactured by autoclave-experimental and statistical study”. Materials & Design, 24(5), 315-324, 2003.
3. Kılıçkap E. "CETP Kompozitlerin delinmesinde oluşan deformasyona delme parametrelerinin etkisinin incelenmesi". 2. Ulusal Tasarım İmalat ve Analiz Kongresi, Balıkesir, Türkiye, 11-12 Kasım 2010.
4. Koboević N, Jurjevic M, Koboević Ž, "Influence of cutting parameters on thrust force, drilling torque and delamination during drilling of carbon fibre reinforced composites". Tehnicki Vjesnik, 19(2), 391-398, 2012.
5. Valarmathi TN, Palanikumar K, Sekar S. “Parametric analysis on delamination in drilling of wood composite panels”. Indian Journal of Science and Technology, 6(4), 4347-4356, 2013.
6. Colt-Stoica M, Anania D, Mohora C, Stoica D. “Defects in composite material caused by drilling in manufacturing process”. Journal of Manufacturing and Industrial Engineering, 11(1-2), 27-29, 2011.
7. Herbert MA, Shetty D, Shetty R, Shivamurthy B. “Effect of process parameters on delamination, thrust force and torque in drilling of carbon fiber epoxy composite”. Research Journal of Recent Sciences, 2(8), 47-51, 2013.
8. Sardińas RQ, Reis P, Davim JP. “Multi-Objective optimization of cutting parameters for drilling laminate composite materials by using genetic algorithms”. Composites Science and Technology, 66(15), 3083-3088, 2006.

9. Jindal A, Singla VK. “Experimental investigation of process parameters in drilling operation using different software technique”. An International Journal of Engineering Sciences, 1, 135-154, 2011.
10. Ramesh B, Elayaperumal A, Balaji DA, Rakesh N. “Optimization of ovality on drilling glass fiber reinforced plastic composites with coated tungsten carbide tool”. International Journal of Innovative Research in Science, Engineering and Technology, 2(7), 2801-2809, 2013.
11. Madhavan S, Narayanan TL, Anant KA, Sathappan. “Influence of thrust, torque responsible for delamination in drilling of glass fabric-epoxy/rigid polyurethane foam sandwich hybrid composite”. AMAE International Journal on Manufacturing and Material Science, 1(1), 16-20, 2011.
12. Bayraktar Ş, Turgut Y. “Elyaf takviyeli polimer kompozit malzemelerin delinmesi üzerine bir araştirma”. 3. Ulusal Talaşlı İmalat Sempozyumu, Ankara, Türkiye, 04-05 Ekim 2012.
13. Durao LM, Magalhaes AG, Marque AT, Tavares JMRS. “Damage assessment of drilled hybrid composite laminates”. 13th European Conference on Composite Materials, Stockholm, Sweden, 2-5 June 2008.
14. Arul S, Vijayaraghavan L, Malhotra SK, Krishnamurthy R. “The effect of vibratory drilling on hole quality in polymeric composites”. International Journal of Machine Tools and Manufacture, 46(3-4), 252-259, 2006.
15. Davim JP, Reis P, António CC. "Drilling fiber reinforced plastics (FRPs) manufactured by hand lay-up: Influence of matrix (Viapal VUP 9731 and ATLAC 382- 05)". Journal of Materials Processing Technology, 155-156, 1828-1833, 2004.
16. ASD Laminat. "Compact Laminat Teknik Değerler". http://www.asdlaminat.com/dosya/tds/compactlaminat-teknik-degerler-tr.pdf (01.06.2015).
17. Royce AYR. "Industrial Routing". https://drive.google.com/a/comu.edu.tr/file/d/0B9ho0dpYVTFONG9hdzJYelVNNlE/view (01.06.2015).
18. Montgomery DC. Taguchi’s Contributions to Experimental Design and Quality Engineering, Design and Analysis of Experiment. 3rd ed. Canada, USA, John Wiley and Sons, 1991.
19. Roy RK. A Primer on the Taguchi Method. Competitive Manufacturing Series. 1st ed. New York, USA, Van Nostrand Reinhold, 1990.