Intelligent Machining of Abrasive Jet on Carbon Fiber and Glass Fiber Polymeric Composites Using Modified Nozzle

2021 ◽  
pp. 225-244
Author(s):  
M. Balasubramanian ◽  
S. Madhu ◽  
C. Hemadri
Keyword(s):  
Carbon Fiber ◽  
Glass Fiber ◽  
Polymeric Composites ◽  
Intelligent Machining

Challenges in abrasive jet machining of fiber-reinforced polymeric composites – a review

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
S. Madhu ◽  
M. Balasubramanian
Keyword(s):  
Surface Roughness ◽  
Carbon Fiber ◽  
Glass Fiber ◽  
Polymeric Composites ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Content Type ◽  
Abrasive Jet Machining ◽  
Reinforced Polymer ◽  
Wide Acceptance

Purpose The purpose of this study is for solving many issues in production that includes processing of complex-shaped profile, machining of high-strength materials, good surface finish with high-level precision and minimization of waste. Among the various advanced machining processes, abrasive jet machining (AJM) is one of the non-traditional machining techniques used for various applications such as polishing, deburring and hole making. Hence, an overview of the investigations done on carbon fiber-reinforced polymer (CFRP) and glass fiber-reinforced polymer (GRFP) composites becomes important. Design/methodology/approach Discussion on various approaches to AJM, the effect of process parameters on the glass fiber and carbon fiber polymeric composites are presented. Kerf characteristics, surface roughness and various nozzle design were also discussed. Findings It was observed that abrasive jet pressure, stand-off distance, traverse rate, abrasive size, nozzle diameter, angle of attack are the significant process parameters which affect the machining time, material removal rate, top kerf, bottom kerf and kerf angle. When the particle size is maximum, the increased kinetic energy of the particle improves the penetration depth on the CFRP surface. As the abrasive jet pressure is increased, the cutting process is enabled without severe jet deflection which in turn minimizes the waviness pattern, resulting in a decrease of the surface roughness. Research limitations/implications The review is limited to glass fiber and carbon fiber polymeric composites. Practical implications In many applications, the use of composite has gained wide acceptance. Hence, machining of the composite need for the study also has gained wide acceptance. Social implications The usage of composites reduces the usage of very costly materials of high density. The cost of the material also comes down. Originality/value This paper is a comprehensive review of machining composite with abrasive jet. The paper covers in detail about machining of only GFRP and CFRP composites with various nozzle designs, unlike many studies which has focused widely on general AJM of various materials.

scholarly journals Application of Glass Fiber and Carbon Fiber-Reinforced Thermoplastics in Face Guards

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 18
Author(s):  
Takahiro Wada ◽  
Hiroshi Churei ◽  
Mako Yokose ◽  
Naohiko Iwasaki ◽  
Hidekazu Takahashi ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Glass Fiber ◽  
Impact Testing ◽  
Fiber Reinforced ◽  
Shock Absorption ◽  
Glass Fiber Reinforced ◽  
Field Of Vision ◽  
Commercial Glass ◽  
Carbon Fiber Reinforced ◽  
Reinforced Thermoplastics

Face guards (FGs) are protectors that allow for the rapid and safe return of athletes who are to play after sustaining traumatic facial injuries and orbital fractures. Current FGs require significant thickness to achieve sufficient shock absorption abilities. However, their weight and thickness render the FGs uncomfortable and reduce the field of vision of the athlete, thus hindering their performance. Therefore, thin and lightweight FGs are required. We fabricated FGs using commercial glass fiber-reinforced thermoplastic (GFRTP) and carbon fiber-reinforced thermoplastic (CFRTP) resins to achieve these requirements and investigated their shock absorption abilities through impact testing. The results showed that an FG composed of CFRTP is thinner and lighter than a conventional FG and has sufficient shock absorption ability. The fabrication method of an FG comprising CFRTP is similar to the conventional method. FGs composed of commercial FRTPs exhibit adequate shock absorption abilities and are thinner and lower in weight as compared to conventional FGs.

Effect of Heat Sinks on Visco-Elastic & Mechanical Properties of EPDM Based Ablative Composites

2010 ◽  
Vol 442 ◽  
pp. 52-58
Author(s):  
M.A. Bashir ◽  
H. Ahmad ◽  
R. Ahmed ◽  
R.A. Alvi ◽  
Mohammad Bilal Khan
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Glass Fiber ◽  
Heat Sinks ◽  
Elastic Behavior ◽  
Fiber Glass ◽  
Adverse Conditions ◽  
Reinforcing Fillers ◽  
Heat Shielding ◽  
Reinforcing Filler

Ablative composites are heat shielding, protective materials that are being used in aerospace industry to protect inner hardware and sensitive devices. The aero dynamic vehicles have to face high stresses, ultra high temperature and adverse conditions of air friction. It is required to develop the materials with light weight and high modulus. EPDM, being heat and ozone attack resistant is the best candidate for the preparation of ablative composites by introducing different heat sinks such as silica, glass fiber, carbon fiber, asbestos, carbon and their combinations have been studied in this work. The prepared materials were tested and it was found that visco elastic behavior of the composites affected by the addition of reinforcing filler (carbon, silica), semi-reinforcing filler (carbon fiber, glass fiber) and non-reinforcing filler (asbestos powder). Mechanical properties tested at different rates, revealed the improvement in tensile strength and % elongation in case of reinforcing and semi-reinforcing fillers but showed adverse effect in case of non-reinforcing fillers. Rheological investigations of these novel composites shows that moony viscosity of the materials containing glass fiber, carbon fiber, silica decreases in the order glass fiber > carbon fiber > silica.

scholarly journals PENGARUH PERKUATAN PELAT CFRP TERHADAP PERILAKU TULANGAN TARIK STRUKTUR BALOK BETON BERTULANG

2015 ◽  
Vol 11 (1) ◽  
pp. 23
Author(s):  
Elfania Bastian ◽  
Rendy Thamrin ◽  
Jafril Tanjung
Keyword(s):  
Carbon Fiber ◽  
Glass Fiber ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Carbon Fiber Reinforced

Dalam studi ini dilakukan analisis numerik tentang pengaruh perkuatan dengan pelat CFRP (Carbon Fiber Reinforced Polymer) terhadap tegangan tulangan tarik. Tegangan pada tulangan tarik ditinjau pada daerah sekitar perletakan balok sederhana dengan dua tumpuan. Untuk maksud tersebut serangkaian model numerik dipersiapkan dengan jenis tulangan yang berbeda. Dimana panjang penyaluran tambahan divariasikan 100mm dan 250mm. Tulangan yang digunakan adalah tulangan baja dan GFRP (Glass Fiber Reinforced Polymer). Hasil analisis menjelaskan bahwa perkuatan dengan pelat CFRP dapat meningkatkan kapasitas balok dimana tegangan yang diterima oleh tulangan tarik menurun. Disamping itu tulangan tarik GFRP juga terbukti efektif meningkatkan daktilitas balok beton bertulang.

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