Modeling of cutting forces in helical milling of unidirectional CFRP considering carbon fiber fracture

2021 ◽  
Vol 68 ◽  
pp. 1495-1508
Author(s):  
Shun Zhang ◽  
Feng Jiao ◽  
Xue Wang ◽  
Ying Niu
Keyword(s):  
Carbon Fiber ◽  
Cutting Forces ◽  
Helical Milling ◽  
Fiber Fracture

Fracture analysis of a single polyacrylonitrile-based carbon fiber in rigid-fixing and flexible-fixing chopping processes

2016 ◽  
Vol 87 (12) ◽  
pp. 1435-1444 ◽  
Author(s):  
Longsheng Lu ◽  
Zhaorui Hou ◽  
Feixiang Zhang ◽  
Yingxi Xie ◽  
Yong Tang
Keyword(s):  
Carbon Fiber ◽  
Cutting Forces ◽  
Failure Surface ◽  
Fracture Analysis ◽  
Fiber Fracture ◽  
Short Carbon Fiber ◽  
Bending Effect ◽  
Short Carbon ◽  
Bending Angles

Chopping is an efficient way to produce short carbon fiber (CF). Generally, there are two types of fixing constraints available in the chopping process: rigid-fixing and flexible-fixing. Simplified experiments were performed using glass and rubber as the fixing constraints in cutting a single polyacrylonitrile-based CF to reveal the influence of the fixing constraints in CF chopping. The cutting forces and the bending angles with different fixing constraints were analyzed. Furthermore, the failure surface of the CF was observed. Due to an additional bending effect in the flexible-fixing cutting, the failure surface of the CF was rough, and the cutting-off force was approximately 5% of the force in rigid-fixing cutting. Therefore, flexible-fixing cutting is a suitable way to decrease the cutting-off force in CF chopping. Moreover, it was concluded that the fiber fracture in rigid-fixing cutting is caused by compression, whereas in flexible-fixing cutting, it results from bending. We hope our work is beneficial to the design of the chopping procedure for short CF.

Experimental Investigation of the Machinability of Polycarbonate Reinforced With Multiwalled Carbon Nanotubes

2005 ◽  
Vol 128 (2) ◽  
pp. 465-473 ◽  
Author(s):  
J. Samuel ◽  
R. E. DeVor ◽  
S. G. Kapoor ◽  
K. J. Hsia
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Multiwalled Carbon Nanotubes ◽  
Cutting Forces ◽  
Fiber Composite ◽  
Chip Morphology ◽  
Surface Characteristics ◽  
Carbon Fiber Composite ◽  
Multiwalled Carbon ◽  
Machined Surface

The machinability of a polycarbonate nanocomposite containing multiwalled carbon nanotubes is investigated and contrasted with its base polymer and with a conventional carbon fiber composite. The material microstructures are characterized using transmission electron and scanning electron microscopy methods. Micro-endmilling experiments are conducted on the three materials. Chip morphology, machined surface characteristics, and the nature of the cutting forces are employed as machinability measures for comparative purposes. Polycarbonate chips are seen to transition from being discontinuous to continuous as the feed-per-tooth (FPT) increases, while, at all FPT values the nanocomposite is seen to form comparatively thicker continuous chips. The nanocomposite and the carbon fiber composite are seen to have the lowest and the highest magnitudes, respectively, for both the surface roughness and cutting forces. Shearing along the nanotube-polymer interface and better thermal conductivity are speculated to be the mechanisms responsible for the observations seen in the nanocomposite.

scholarly journals Modelling of cutting forces and researching calibration method in helical milling

2017 ◽  
Vol 94 (5-8) ◽  
pp. 2949-2960 ◽  
Author(s):  
S. Shang ◽  
X. D. Qin ◽  
J. H. Li ◽  
S. P. Li ◽  
H. Li ◽  
...  
Keyword(s):  
Cutting Forces ◽  
Calibration Method ◽  
Helical Milling

Approach to the Study of Workpiece Damage in Drilling of Carbon Fiber Composites by Using Thermography IR

2012 ◽  
Vol 498 ◽  
pp. 43-48 ◽  
Author(s):  
M. San Juan ◽  
O. Martín ◽  
Francisco Santos Martin ◽  
P. de Tiedra ◽  
A. Sánchez
Keyword(s):  
Carbon Fiber ◽  
Optical Microscopy ◽  
Process Parameters ◽  
Cutting Forces ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
Ir Thermography ◽  
First Results ◽  
Aeronautical Industry ◽  
Study Methodology

The present work shows the first results of the study methodology of the process parameters applied to drilling of composites reinforced with carbon fiber (CFRP) used in the aeronautical industry. The analysis uses both cutting forces and temperatures achieved in the cutting process, although it has focused on the application of IR thermography to the study of the hole. The study of the defects that can be found on the workpiece, associated with these processes (delamination), is approached by using both optical microscopy and SEM.

Hole Making Process of Carbon Fiber Reinforced Polymer (CFRP) Using End Mill Cutting Tool

2012 ◽  
Vol 576 ◽  
pp. 64-67 ◽  
Author(s):  
Erween Abdul Rahim ◽  
Z. Mohid ◽  
K.C. Mat ◽  
M.F.M. Jamil ◽  
R. Koyasu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Fiber Reinforced Polymer ◽  
Helical Milling ◽  
Carbon Fiber Reinforced Polymer ◽  
Depth Of Cut ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Carbon Fiber Reinforced

This paper presents an alternative way of producing a hole by using a helical milling concept on a carbon fiber reinforced polymer (CFRP). Delamination is a major problem associated with making a hole by drilling on the CFRP. This study focused on helical milling technique using a vertical machining center in order to produce a hole. Various levels of cutting parameter such as cutting speed, feed rate and depth of cut have been chosen to observe the effect of trust force, delamination and surface roughness. The result will be used to determine on which cutting parameters give the best hole quality that will achieved by this new approached.

Investigation on Processing Technology in Machining CFRP Large Size Hole

2014 ◽  
Vol 800-801 ◽  
pp. 48-52
Author(s):  
Ying Ying Wei ◽  
Chang Ying Wang ◽  
Qing Long An ◽  
Ming Chen
Keyword(s):  
Carbon Fiber ◽  
Cutting Forces ◽  
Cutting Parameters ◽  
Processing Technology ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Large Size ◽  
Fiber Reinforced Plastics ◽  
Optimal Cutting Parameters ◽  
Hole Machining

Lots of hole machining in CFRP(carbon fiber reinforced plastics) are conducted in the astronautic fields, especially a large size hole machining. The purpose of this article is to investigate the optimal cutting parameters and allowance distribution in CFRP 18/32inch hole machining by thoroughly considering the cutting forces and burr length. All tests were run without coolant using different drills, expanding drills and reamers. The damage generated and the cutting forces produced in CFRP composites cutting were observed. Therefore, the optimal allowance distribution in CFRP large size hole machining was obtained, providing compound tools design with theoretical direction.

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