Article
Engineering, Chemical
Jalumedi Babu, Anjaiah Madarapu, Lijo Paul, A. N. Khaleel Ahmed, J. Paulo Davim
Summary: This study aims to address the challenges of high-speed machining in glass-fiber-reinforced composites and obtains the optimal drilling parameters combination through the Grey Entropy Fuzzy method.
Article
Engineering, Manufacturing
Liming Shu, Shihao Li, Zhenglong Fang, Toru Kizaki, Katsuyo Kimura, Giichi Arai, Koichi Arai, Naohiko Sugita
Summary: The study altered the drilling approach for CFRP from crushing/compression fracture to shear cutting to suppress thermomechanical loads, achieving a significant improvement in performance. The dedicated drill bit outperformed the conventional drill bit in terms of thrust force, temperature elevation, burr, and exit-delamination, highlighting the effectiveness of the new design approach.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Liying Fan, Dazhong Wang
Summary: This study aims to inhibit delamination of Al/Ti laminated materials and improve chip fracture ability by changing the second point angle of the double cone drill. Experimental results show that the double cone drill can reduce drilling force, resulting in less delamination damage and easier chip breakage.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Engineering, Manufacturing
Fu-ji Wang, Meng Zhao, Rao Fu, Xin Liu, Shen Qiu, Jian-bo Yan, Bo-yu Zhang
Summary: This paper proposes a replaceable drill bit with compound step and sawtooth structures for drilling CFRP to reduce damages as well as cost. Experimental results indicate that this type of drill bit outperforms the ordinary one in drilling performance and cost.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Chemistry, Physical
Jiali Yu, Tao Chen, Yiming Zhao
Summary: In this paper, drilling parameter analysis was carried out for prefabricated laminated composites using finite element simulation analysis and experimental research. The influence of different processing parameters on the processing axial force was qualitatively compared. The inhibition rule of variable parameter drilling on the damage propagation of initial laminated drilling was explored, which further improves the drilling connection quality of composite panels with laminated materials.
Article
Engineering, Civil
Mehdi Ganjiani, Majid Safarabadi, Nabi Mehri-Khansari, Hossein Oruji
Summary: This study examines the effect of mode II delamination and corresponding interlaminar crack propagation in multilayered glass/polyester composites during the drilling process, using numerical and experimental approaches. Results show that more than 95% of crack propagation can be attributed to mode II.
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2021)
Article
Polymer Science
Usama A. Khashaba, Mohamed S. Abd-Elwahed, Mohamed A. Eltaher, Ismail Najjar, Ammar Melaibari, Khaled I. Ahmed
Summary: This study investigates the effects of drilling factors on the thermal-mechanical properties and delamination of glass fiber reinforced polymer (GFRP) experimentally. The results demonstrate significant relationships between drilling factors and responses, with feed having a greater impact on thrust force compared to speed. All machining parameters significantly affect the measured temperature, with laminate thickness making the largest contribution.
Article
Environmental Sciences
Mohamad Amin Daneshfar, Mehdi Ardjmand
Summary: The study identified the criteria with the highest and lowest impact on choosing the appropriate location for drilling cuttings disposal. It also proposed five different classes of landfills based on effective criteria. The study determined suitable land in Khark Island and Lavan Island for drilling waste disposal.
Article
Engineering, Marine
Mengke Wang, Wenbo He, Minqi Wang, Jine Cao, Pinlu Cao
Summary: Air reverse circulation drilling is a promising method for ice drilling due to its high mechanical penetration rate and lack of pollution. The structure of the drill bit and the presence of ice core have significant impacts on the effect of air reverse circulation.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Manufacturing
S. Samsudeensadham, V Krishnaraj
Summary: Carbon fiber reinforced plastic/Ti-6Al-4V stacks are commonly used in aircraft structures due to their high strength-to-weight ratio. This experimental study investigated the use of a grooved drill tool to reduce damage and improve drilling efficiency. The results showed that the grooved drill tool significantly decreased delamination and burr formation compared to the standard tool.
MATERIALS AND MANUFACTURING PROCESSES
(2022)
Article
Engineering, Mechanical
Xinyi Qiu, Pengnan Li, Changping Li, Qiulin Niu, Shujian Li, Tae Jo Ko, Lingyan Tang
Summary: This study investigates the variation patterns of tool wear and the causes of drill failure in CFRP drilling through drilling experiments and the comparison of evaluation indexes, and concludes that the reverse edge compound drill is suitable for drilling CFRP.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Mahmoud M. A. Nassar, Khalid I. Alzebdeh, Mahmoud M. M. Alsafy, Sujan Piya
Summary: This study analyzes the ability to machine a bio-composite material made of polypropylene reinforced with date palm fibers and focuses on the impact of drilling on material delamination. The results indicate that drill bit diameter has a significant influence on delamination, three times greater than feed rate.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Article
Automation & Control Systems
Chunhao Wang, Pengnan Li, Shujian Li, Xinyi Qiu, Qiulin Niu, Changping Li, Tae Jo Ko
Summary: This study found that longitudinal-torsional ultrasonic vibration assisted drilling can effectively reduce the mean thrust force and defects in CFRP machining, resulting in better hole wall morphology and lower comprehensive damage factor.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
ZiQiang Zhang, Feng Jiao, YuanXiao Li, Ying Niu, JingLin Tong
Summary: This paper investigates the machining performance of longitudinal-torsional ultrasonic-assisted core drilling in carbon fiber-reinforced plastics. The results show that this method significantly reduces cutting force, suppresses delamination, and improves hole quality.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Characterization & Testing
Neslihan Ozsoy, Secil Eksi, Murat Ozsoy
Summary: Delamination, the major problem in drilling composite materials, can be minimized by optimizing cutting parameters. The delamination behavior of a glass/carbon/aramid fiber reinforced hybrid composite during drilling was investigated. Experimentation and statistical analysis were conducted to determine the optimal cutting parameters. The results showed that low cutting velocity and feed rate under dry conditions can reduce thrust force and minimize delamination.
