Identification of tensile strength properties of abaca fiber by weakest-linkage approach-statistic property of fiber diameter

10th International Conference Numerical Analysis in Engineering

数学;工业技术

Suardi^1 ; Homma, H.^2 ; Abubakar^1

Graduate School Departement of Mechanical Engineering, Universitas Sumatera Utara, Indonesia^1

Department of Mechanical Engineering, Universitas Sumatera Utara, Indonesia^2

关键词: Diameter Measurement;    Ecological materials;    Engineering materials;    Life Cycle Assessment (LCA);    Reinforcement fibers;    Statistical approach;    Tensile strength properties;    Weakest-link theory;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/308/1/012037/pdf
DOI  :  10.1088/1757-899X/308/1/012037

学科分类：工业工程学

来源: IOP

【 摘 要 】

Fiber reinforced plastics or metals (FRPor FRM) are usually ecological materials, because their specific strength defined as the strengthperunit mass is much larger than metal, and weight ofmachines and structuresfor transport made ofFRP can be significantly reduced so that the consumption of fossil fuel scan be saved to result in tremendous reduction of CO2emissions. However, when we consider life cycle assessment (LCA) of synthetic fibers like carbon fiber and glass fiber, we can recognize much CO2 emission in production of these fibers. Therefore, more ecological reinforcement fibers must be developed. For this end, we should utilization cellulose fibers derived from plant tissue structure as an alternative fibers for synthetic fibers, which are considered as carbon neutral materials, and natural degraded material. This study selectsabaca fiber, which is a natural fiber and is abundant in Indonesia, but its usagehas not been optimized for engineering material. The purpose of this study is to identify the mechanical strength of a single abaca fiber by statistical approach. First, weakest link theory and Weibull theory are used to discuss experimental data. 90 specimens of almost identical geometry and biological aspects are tested under tension. These data are analyzed by Weibull theory or other statistical theory. Final target is to look into optimal method to reduce scatter ratio, ratio of standard deviation to mean value, of less than 0.1, which is the level of metallic materials. If we can reduce scatter ration to such level, we can design machines and structures using abaca fiber in the same way as carbon fibers or glass fibers. Summary of Diameter Measurement the all mean value is 0.1 and standardeviasi. The t-Test showed that mean value of each part is estimated as sampling from group with the same mean value, at confidence level of 99%.