scholarly journals A Computational Approach for Prediction of the Damage Evolution and Mechanical Characteristics of Random Fiber Composites

2014 ◽  
Vol 7 (18) ◽  
pp. 3842-3851
Author(s):  
Mohamed Daia Dine Boudiaf ◽  
Kamel Necib
Keyword(s):  
Damage Evolution ◽  
Mechanical Characteristics ◽  
Fiber Composites ◽  
Computational Approach

Microscale damage evolution and stress redistribution in Ti–SiC fiber composites

2003 ◽  
Vol 51 (14) ◽  
pp. 4239-4250 ◽  
Author(s):  
Jay C. Hanan ◽  
Ersan Üstündag ◽  
Irene J. Beyerlein ◽  
Geoffrey A. Swift ◽  
Jonathan D. Almer ◽  
...  
Keyword(s):  
Damage Evolution ◽  
Fiber Composites ◽  
Stress Redistribution ◽  
Sic Fiber

Computational Approach of the Cortical Bone Mechanical Behavior Based on an Elastic Viscoplastic Damageable Constitutive Model

2020 ◽  
Vol 12 (07) ◽  
pp. 2050081
Author(s):  
Tesnim Kraiem ◽  
Abdelwahed Barkaoui ◽  
Tarek Merzouki ◽  
Moez Chafra
Keyword(s):  
Mechanical Behavior ◽  
Bone Quality ◽  
Damage Evolution ◽  
Sensitivity Study ◽  
Computational Approach ◽  
Material Behavior ◽  
The Finite Element Method ◽  
Non Invasive ◽  
Applied Loading ◽  
Good Agreement

Bone mechanical behavior varies according to the mechanical loading to which it is subjected, and its response effectiveness mainly depends on its quality. Thus, measuring the indicators controlling the bone quality is required to assess its strength. Indeed, the Finite Element Method (FEM) provides a non-invasive tool to interpret bone quality. Therefore, this work coupled the FEM with a micromechanical law, aiming to provide an exhaustive description of the human bone mechanical behavior. Anisotropy, viscoplasticity and damage were introduced in the material behavior law and the damage evolution was plotted based on the applied loading. Then a sensitivity study was conducted to evaluate the effects of viscoplasticity and damage parameters on bone behavior. The obtained numerical results were in a good agreement with the previously reported experimental data and allowed to distinguish key parameters from non-significant ones. This new computational model provided a better understanding of the main parameters affecting bone behavior.

Thermal and mechanical characteristics of polyurethane/curaua fiber composites

2008 ◽  
Vol 95 (1) ◽  
pp. 181-185 ◽  
Author(s):  
Cheila G. Mothé ◽  
Carla R. de Araujo ◽  
Shui H. Wang
Keyword(s):  
Mechanical Characteristics ◽  
Fiber Composites ◽  
Curauá Fiber

The Study on the Mechanical Properties of Poly(lactic acid)/Straw Fiber Composites

2012 ◽  
Vol 200 ◽  
pp. 312-315
Author(s):  
Ping Zhang ◽  
Bing Tao Wang ◽  
De Gao ◽  
Li Hua Wen
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Mechanical Characteristics ◽  
Raw Materials ◽  
Fiber Composites ◽  
Poly Lactic Acid ◽  
Corn Straw ◽  
Renewable Raw Materials ◽  
Pre Treatment ◽  
The Impact

The paper describes the production and the mechanical characteristics of composites made completely from renewable raw materials, the corn straw fiber and the biodegradable plastic, poly(lactic acid). The effect of straw fiber content on the mechanical properties of the composites was studied and the optimum mass fraction was 15%. To enhance the mechanical properties of the composites, two different methods were tested. Maleic anhydride as the compatilizer was introduced into the composites but the changes of the mechanical properties were small. While the other method, pre-treatment for straw fiber before blending, the mechanical properties increased obviously. The tensile strength and the impact strength were 35.6 MPa and 1.67 kJ/m2, respectively.

scholarly journals Mechanical Behavior of Coir Fiber Reinforced Epoxy Composites with Variable Fiber Lengths

2019 ◽  
Vol 8 (10) ◽  
pp. 3006-3011
Keyword(s):  
Mechanical Properties ◽  
Fiber Length ◽  
Mechanical Characteristics ◽  
Natural Fibers ◽  
Fiber Composites ◽  
Industrial Applications ◽  
Coir Fiber ◽  
Reinforced Composites ◽  
Element Analysis ◽  
Fiber Treatment

Most studies on the application of natural fibers as reinforcement in polymer composites are growing as a result of the changes in characteristics that fibers can provide for the product. This can be achieved by manufacturing of composites using Hand Layup process. The 2% NaOH fiber treatment was performed to improve fiber-matrix interfaces making spathefibre-reinforced composites better mechanical characteristics. Filler loadings as 5% by volume of coir fiber are selected as reinforcement in composites. The varying lengths of fiber chosen as 5mm, 10mm & 15mm and resin-hardner ratio are maintained as 10:0.8. A total 3 numbers of plates with volume as 300 х 300 х 4 mm3 were produced and specimens as per the various ASTM standard were tested to determine the ultimate various Mechanical properties for different configuration. The strength of epoxy resin / coir fiber composites was noticed at a maximum 15 mm (15.27 N / mm2 ) fiber length. The maximum impact strength of the charpy was also 15 mm fiber length (9.87 kJ / m2 ).The Experimental results were validated using a numerical method technique in FEA software. The obtained results by experimentation and Finite Element Analysis are very much closer to each other. The results show good mechanical properties and hint us as a replacement for conventional materials in industrial applications.

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