Modelling of Manufacturing Processes by FEA-Method for the Production of Natural Fiber-Reinforced Plastics

2007 ◽  
Author(s):  
Christian Doersch ◽  
Joerg Muessig ◽  
Dieter H. Mueller
Keyword(s):  
Natural Fiber ◽  
Cost Effective ◽  
Textile Material ◽  
Market Demand ◽  
Fiber Reinforced ◽  
Element Analysis ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastics ◽  
Reinforced Plastic ◽  
Plastic Components

In recent years a growing demand for natural fiber-reinforced plastic components and structures has been observed. One important area of application is transportation, particularly in the automotive industry. Due to market demand, innovative process technologies for fast, cost-effective and quality-driven manufacture of natural fiber-reinforced plastic components is required. This paper will focus on the development of technologies for automised manufacturing of NFRP-components with resin infusion processes. At present NFRP-components are manufactured automatically but without flexibility concerning the deviations of material properties or part geometries. This lack of control in manufacturing results in long cycle times, low process control and high costs. The Bremen Institute for Engineering Design (BIK) is developing and improving machine and process technologies for automised textile handling. The handling system has to meet the requirements of large, limp textile material. The authors have mutually developed methods for the simplified simulation of textiles. The simulation supports the evaluation of textiles and handling devices concerning the ability for better control in manufacturing. To meet these requirements, a simulation of the textile material with the “Finite Element Analysis” method supports the part and process design by reducing developing time and costs. For this purpose, the authors showed a simplified model with a reduced set of material data which is required for the FEA-model.

Systematische Bewertung von FKV-Fertigungstechnologien*/Systematic evaluation of FRP manufacturing technologies - Technology evaluation by the example of large-scale series production of fiber-reinforced plastic (FRP) components

2016 ◽  
Vol 106 (03) ◽  
pp. 125-130
Author(s):  
D. Hofbauer ◽  
J. Greitemann ◽  
M. Grammer ◽  
J. Kaufmann ◽  
G. Prof. Reinhart
Keyword(s):  
Mass Production ◽  
High Performance ◽  
Large Scale ◽  
Systematic Evaluation ◽  
Series Production ◽  
Fiber Reinforced ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Plastic Components ◽  
Manufacturing Technologies

Hochleistungswerkstoffe wurden bisher nur für Spezialanwendungen eingesetzt, da hohe Materialkosten und eine geringe Reife der Fertigungstechnologien die Anwendung in der Großserie erschwert haben. Um die grundlegende Eignung der Technologien unter Beachtung der Produktanforderungen zu ermitteln, präsentiert dieser Fachbeitrag eine Methodik für die systematische Bewertung, die am Beispiel der Großserienfertigung von Bauteilen aus Faser-Kunststoff-Verbundwerkstoffen (FKV) erläutert wird.   The use of high-performance materials has so far been limited to special applications for reasons of high material costs and low maturity of manufacturing technologies. These facts avoided their use in mass production in the past. This paper presents a method for systematically evaluating technologies to determine their fundamental suitability for mass production. It is exemplified by large-scale series production of fiber-reinforced plastic components.

Study on Acoustic Emission Detection Technology of Fiber Reinforced Plastic Pressure Vessel

2020 ◽  
Author(s):  
Daoxiang Wei ◽  
Yuqing Yang ◽  
Jun Si ◽  
Xiang Wen
Keyword(s):  
Acoustic Emission ◽  
Pressure Vessel ◽  
Pressure Vessels ◽  
Fiber Reinforced ◽  
Fiber Reinforced Plastic ◽  
Glass Fiber Composites ◽  
Reinforced Plastics ◽  
Detection Technology ◽  
Reinforced Plastic ◽  
Emission Detection

Abstract Fiber reinforced plastics are used in pressure vessel manufacturing because of their high strength and corrosion resistance.Defects may occur in the manufacture and use of the pressure vessel. To ensure safe operation of the pressure vessel, it is necessary to conduct periodic safety assessment of the pressure vessel put into operation. It is difficult to evaluate the safety status of fiber-reinforced plastic pressure vessels by conventional nondestructive testing.Acoustic emission detection technology is a dynamic detection method, which has obvious advantages for the performance and fracture process of fiber reinforced plastic materials. ASME section V or ASTM section on acoustic emission detection of FRP pressure vessels, in which the localization of defects is mainly based on acoustic emission instruments. Due to the anisotropy of FRP material, the instrument can only give the area of the defect, and then use other non-destructive testing methods supplementary detection, so the author proposes a regional positioning method, which can locate defects more accurately. In this paper, acoustic emission detection method and lead breaking method were used to simulate the deficiency, and acoustic velocity attenuation and variation of fiber reinforced plastics were studied, and confirmative tests were carried out to obtain the positioning accuracy of the deficiency in different areas.In order to achieve the acoustic emission (AE) response behavior of stretching damage of glass fiber composites with fiber pre-broken and weak bonding, stretching tests and real-time AE monitoring of glass fiber composites were conducted.Experimental results showed that damage model such as matrix cracking and fiber fracture and bending could be occurred in the process of damage and failure. The composition and content of signal frequency of AE is also different because of difference of preset defect.

An Empirical Approach for Prediction of Natural Fiber Reinforced Polypropylene Composite Properties

2014 ◽  
Vol 534 ◽  
pp. 69-73
Author(s):  
Ritu Gupta ◽  
Norrozila Sulaiman ◽  
Mohammed Dalour Hossain Beg ◽  
Arun Gupta
Keyword(s):  
Coupling Agent ◽  
Natural Fiber ◽  
Linear Regression Analysis ◽  
Fiber Reinforced ◽  
Scientific Software ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Non Linear ◽  
Linear Regressions ◽  
Composite Properties

In this paper, empirical models are proposed using multiple non linear regressions technique to predict the influence on the Youngs modulus and the tensile strength of the natural fiber reinforced plastic composites (NFRPC). Maleic Anhydride grafted polypropylene (MAPP) has been a proven coupling agent (CA) used to improve the interfacial bonding between the fibers and the plastics material. It is important to include the factor of coupling agent, when making predictions the properties of the composites through the models. For the development of the model, data was collected from various research journals presented in literature. Non linear regression analysis was performed to obtain the empirical model using polymath scientific software. The results were found to be within the acceptable range.

Micro-Drilling of CFRP Plates Using a High-Speed Spindle

2012 ◽  
Vol 523-524 ◽  
pp. 1035-1040 ◽  
Author(s):  
Keiji Ogawa ◽  
Heisaburo Nakagawa ◽  
Toshiki Hirogaki ◽  
Eiichi Aoyama
Keyword(s):  
Cutting Forces ◽  
High Speed ◽  
Fiber Reinforced ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastics ◽  
Cfrp Plate ◽  
Glass Fiber Reinforced ◽  
Reinforced Plastic ◽  
Micro Drilling ◽  
Fiber Reinforced Plastics

Fundamental characteristics in the micro drilling of carbon fiber reinforced plastic (CFRP) plates are investigated in the present paper. When micro drilling with a high-speed spindle, cutting forces during drilling, such as thrust force and torque, were measured by high resolution dynamometers and drill temperature was monitored by thermography. Comparing the experimental results of CFRP with that of drilling glass fiber-reinforced plastics (GFRP) revealed some unique tendencies. The cutting forces and drill temperature increased drastically. Moreover, drill wear rapidly accelerated. The tool life of CFRP plate drilling is much shorter than that of other plates.

Development of PCD Milling Tool for Carbon-Fiber-Reinforced Plastics

2014 ◽  
Vol 1017 ◽  
pp. 411-414
Author(s):  
Takayuki Kitajima ◽  
Jumpei Kusuyama ◽  
Akinori Yui ◽  
Katsuji Fujii ◽  
Yosuke Itoh
Keyword(s):  
Carbon Fiber ◽  
Carbon Fibers ◽  
Polycrystalline Diamond ◽  
Fiber Reinforced ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastics ◽  
Reinforced Plastic ◽  
Milling Tool ◽  
Fiber Reinforced Plastics ◽  
Carbon Fiber Reinforced

Interest in carbon-fiber-reinforced plastic (CFRP) has been growing for the last several years. CFRP, a composite material made of carbon fibers and resins, has high mechanical characteristics and is well known as a difficult-to-cut material. During the process of drilling or cutting of CFRP, tool wear and delamination occur frequently. In this study, the authors developed a milling tool for CFRP using polycrystalline diamond, and the cutting performance of the developed tool was investigated.

Analysis of rubber pressure molding technique to fabricate fiber reinforced plastic components

2007 ◽  
Vol 28 (5) ◽  
pp. 637-649 ◽  
Author(s):  
Kamal K. Kar ◽  
S. D. Sharma ◽  
Prashant Kumar ◽  
J Ramkumar ◽  
Rao K. Appaji ◽  
...  
Keyword(s):  
Fiber Reinforced ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Plastic Components

Natural Fiber Reinforced Plastic Foams from Plant Oil-Based Resins

2008 ◽  
Vol 47-50 ◽  
pp. 149-152 ◽  
Author(s):  
Min Zhi Rong ◽  
Su Ping Wu ◽  
Ming Qiu Zhang
Keyword(s):  
Natural Fiber ◽  
Sisal Fiber ◽  
Fiber Reinforced ◽  
Plant Oil ◽  
Soil Burial ◽  
Plastic Foams ◽  
Fiber Reinforced Plastic ◽  
Reinforced Plastic ◽  
Compressive Performance ◽  
Sisal Fibers

In this work, a simple but effective approach was reported for preparing natural fiber reinforced plastic foams based on plant oil with excellent compressive performance and biodegradability. Firstly, epoxidized soybean oil (ESO) was converted into its acrylate ester AESO, which can be free-radically copolymerized with reactive diluents like styrene to give thermosetting resins and their foam plastics. Then the bio-foam composites were produced using short sisal fiber as the reinforcement. Effects of fiber loading, length and surface treatment on properties of the foam composites were investigated. It was found that exposure of the fibers to gas cells of the foam reduced the effectiveness of interfacial effect, which is different from conventional bulk composites. As a result, reinforcing ability of sisal fibers became a function of fiber length, loading, etc. Furthermore, the plastic foams based on plant oil resin were proved to be biodegradable in soil burial or in the presence of fungi.

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