Delamination assessment of punched holes on laminated composite panels based on the profile measurement technique

Abdullah, Aldrin; Zain, M. S. M.; Samad, Z.

doi:10.1007/s00170-017-0545-1

Cited by 9 publications

(3 citation statements)

References 33 publications

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“…This may be due to the dominating push down delamination instead of peel-up delamination, which may inversely occurred in the case of ARHSS drill. 25 Eventually, the delamination factor gradually decreases when feed increases. 5(a) that AE RMS with time for AR HSS drill is non-linear.…”

Section: Effect Of Tool Conditioning On Delamination Factormentioning

confidence: 99%

Evaluation of delamination in drilling of SiC_p/sisal fiber reinforced epoxy composites by the analysis of acoustic emission and cutting force: Influence of tool condition

Kamaraj

Prakash

Kumar

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The presence of SiC particulate in the newly developed SiCp/sisal fiber/epoxy composites on drilling, influence the wear in the drill bit. This article presents the experimental investigations of the effect of tool condition on delamination during drilling of composite by the time, frequency domain, and discrete wavelet packet transformation (DWPT) of acoustic emission and cutting force measured in process. It may further be helpful for determining and assessing the root cause of the induced delamination damage. The drill bits are made of high-speed steel (HSS), the condition is categorized into three different types namely as received, cryogenically treated (−80°C for 24 h), and cryogenically treated and tempered (−80°C for 24 h and 200°C for 2 h). Study of the frequency domain reveals that the dominant frequency of the acoustic emission (AE) signals falls between 100 and 300 kHz. The AE-specific energies of the decomposed signals are calculated based on DWPT analysis. It is noted from the AE specific energy that shearing occurs during drilling process. The cryogenically treated and tempered HSS drill contributes significantly to the reduction in delamination compared to other tools employed in this investigation.

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Section: Effect Of Tool Conditioning On Delamination Factormentioning

confidence: 99%

Evaluation of delamination in drilling of SiC_p/sisal fiber reinforced epoxy composites by the analysis of acoustic emission and cutting force: Influence of tool condition

Kamaraj

Prakash

Kumar

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…They reported that delamination is critical to ensuring that the assembled composite panels are strongly attached to the produced hole. Abdullah et al [28] have investigated information about delamination assessment of punched holes on laminated composite panels based on the profile measurement technique. Main goal of their research was to quantify damage of delamination around the holes created using the punching device.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of Punching the MWCNTs Doped Composite Plates by Using Different Cutting Profiles

2021

Teh. vjesn.

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In this study, glass fiber reinforced composite layers which are with and without additives of 0.1 wt.% multi walled carbon nanotubes (MWCNTs) of epoxy were manufactured by vacuum infusion method. Unlike the conventional methods, punching was used in processing and drilling of these materials. The 62 -64 HRC hard punches made of 1.3343 material with specially designed 90°, 30°, 15°, V, C profiles were used for punching of composites. Additionally, made of 1.2379 material with 62 -64 HRC hardness, the mold with 0.05, 0.01 and 0.16 mm clearance values was used. Fujifilm prescale and chatillon load cell were used for force measurement that showed the pressure applied by punches with different cutting profiles. Hole diameter, delamination and burring were analyzed by 3d laser scanner. In test values with mold's 0.05 mm clearance, no burr was observed. The cutting surface of MWCNTs doped composite materials was found to be cleaner and material strength was higher.

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“…Farklı profilli zımbalar kullanılarak delinen kompozit malzemelerin delik etrafındaki delaminasyon hasarını ölçmek için odak değişimi tekniğine dayalı Alicona makinasını kullanmışlardır. Delaminasyonun, kompozit panelin yapısal bütünlüğünü etkileyebilecek yapısal bir hasar ölçüsü olduğunu vurgulamışlardır [14]. Bu çalışmada literatürden farklı olarak nanopartikül katkılı ve katkısız malzemelere üç farklı kesme boşluğu bulunan kalıpta kaplamasız ve Tin kaplı zımbalar kullanılarak delikler delinmiş, delik delme sürecinde kesme kuvveti değişimi incelenmiştir.…”

Section: Introductionunclassified

ÇCKNT Katkılı ve Katkısız CETP Kompozit Malzemelerin TIN Kaplamalı Zımba İle Delinmesinde Kesme Kuvveti Değişiminin İncelenmesi

Ceritbinmez¹

2021

acperpro

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Endüstride başta otomotiv ve beyaz eşya sektörlerinde yaygın olarak kullanılan özdeş ve imalat sayısı yüksek olan metal, plastik ve kompozit malzemelerin delinmesinde saç metal kalıpları tercih edilmektedir. Gelişen teknoloji, artan üretim kapasitesi ve rekabet koşulları imalatçıları daha az maliyetle daha fazla üretim yapmaya ve üretim proseslerini iyileştirmeye teşvik etmektedir. Bu çalışmada ÇCKNT katkılı ve katkısız CETP kompozit malzemelere 0.025 mm, 0.10 mm, 0.15 mm kesme boşluğu bulunan kalıplarda kaplamasız ve TiN kaplamalı zımbalar ile delik delinerek kesme kuvveti değişimi incelenmiştir. Yapılan çalışma neticesinde TiN kaplamalı zımba kullanılarak yapılan delme işlemlerinde ihtiyaç duyulan ortalama kesme kuvveti’nin kaplamasız SBZ zımba kullanımına göre katkılı ve saf kompozitlerde sırası ile % 10.10 ve % 4.50 oranında azaldığı tespit edilmiştir. Ayrıca kalıp üzerinde bulunan kesme boşluğunun azalması ile kesme kuvveti ihtiyacının arttığı ölçülmüştür.

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Delamination assessment of punched holes on laminated composite panels based on the profile measurement technique

Cited by 9 publications

References 33 publications

Evaluation of delamination in drilling of SiC_p/sisal fiber reinforced epoxy composites by the analysis of acoustic emission and cutting force: Influence of tool condition

Evaluation of delamination in drilling of SiC_p/sisal fiber reinforced epoxy composites by the analysis of acoustic emission and cutting force: Influence of tool condition

An Investigation of Punching the MWCNTs Doped Composite Plates by Using Different Cutting Profiles

ÇCKNT Katkılı ve Katkısız CETP Kompozit Malzemelerin TIN Kaplamalı Zımba İle Delinmesinde Kesme Kuvveti Değişiminin İncelenmesi

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Delamination assessment of punched holes on laminated composite panels based on the profile measurement technique

Cited by 9 publications

References 33 publications

Evaluation of delamination in drilling of SiCp/sisal fiber reinforced epoxy composites by the analysis of acoustic emission and cutting force: Influence of tool condition

Evaluation of delamination in drilling of SiCp/sisal fiber reinforced epoxy composites by the analysis of acoustic emission and cutting force: Influence of tool condition

An Investigation of Punching the MWCNTs Doped Composite Plates by Using Different Cutting Profiles

ÇCKNT Katkılı ve Katkısız CETP Kompozit Malzemelerin TIN Kaplamalı Zımba İle Delinmesinde Kesme Kuvveti Değişiminin İncelenmesi

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Evaluation of delamination in drilling of SiC_p/sisal fiber reinforced epoxy composites by the analysis of acoustic emission and cutting force: Influence of tool condition

Evaluation of delamination in drilling of SiC_p/sisal fiber reinforced epoxy composites by the analysis of acoustic emission and cutting force: Influence of tool condition